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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.965 by jmc, Sun Mar 2 23:38:43 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 dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
8  o moved ptracer ctrl index 17 -> 32  o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
9      move a few statemens out the main loop into separate loops
10    o pkg/shelfice:
11      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
12        (kg/m^2/s), does not break tests, because in verification/isomip,
13        rhoConstFresh=rhoConst (by accident)
14      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
15      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
16        new file model/src/seawater.F, so that they are available for all pkgs.
17      - convert potential temperature into in-situ temperature. This changes the
18        isomip tests => update tests
19    o add a flag writePickupAtEnd (default=true) to be able to suppress
20      writing a pickup at the last timestep
21    o pkg/profiles:
22      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
23      (for "less than 32 characters name" compiler requirement)
24    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
25      conditions that have a different sampling frequency than S/T/U/V obcs
26    o pkg/diagnostics (stats-diags):
27      - fix global Min/Max in case 1 processor get only empty tiles
28    o genmake2: replace (4 times)
29         make genmake_tc_1.o >> genmake_warnings 2>&1
30      with
31         COMM="$CC $CFLAGS -c genmake_tc_1.c"
32         echo $COMM >> genmake_warnings
33         $COMM >> genmake_warnings 2>&1
34      to make genmake2 always see the value of CC as specified in the optfile.
35    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
36      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
37      - modify verification advect_cs test to test SOM-advection on CS-grid.
38    o pkg/ctrl:
39      - Rewrite of ctrl_map_ini_ecco.F,
40        introducing a generic routine (ctrl_map_ini_gen.F).
41      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
42    
43    checkpoint59n
44    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
45      number in dedicate array "hdiag":
46      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
47        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
48      - many small changes (integer format) for large number of diagnostics
49      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
50        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
51    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
52      usingSphericalGrid, this allows to define the rotated grid coordinates
53      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
54      geographical coordinates according to the inverse of the rotation defined
55      by the Euler angles, so that Coriolis parameter and online-interpolation by
56      exf works with the geographical coordinates on XC/YC/XG/YG.
57      Naturally, this feature does not work with all packages, so some
58      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
59      profiles), because there the coordinates are assumed to be regular
60      spherical grid coordinates.
61    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
62      - introduce isopycnal diffusion coefficient control.
63    o tools/adjoint_options:
64      - additional control vector components.
65    o pkg/mnc: have mnc create marginally meaning full coordinate variables
66      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
67    o pkg/mypackage:
68      - add example of read/write pickup for state-var ;
69      - add entry points to the main code for state-vars diags & write-pickup.
70    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
71      transitions for useExfYearlyFields
72      - add new subroutine that determines the file to read from for
73        use*YearlyFields = .TRUE. and .FALSE.
74      - add a verification experiment to global_with_exf that tests
75        useExfYearlyFields with USE_EXF_INTERPOLATION defined
76    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
77      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
78      subroutines (which could be generated from a template, because they are
79      almost identical), for now they are included in obcs_prescribe_read.F for
80      simplicity
81    o pkg/exf:
82      - add a little more diagnostic to exf_interp_read (in analogy to
83        mds_read_field, can be turned off with debugLevel < debugLevA=1)
84      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
85        ugly but fast by unrolling short inner loops, inserting a unroll=8
86        directive in routine lagran, and splitting a loop and making do while the
87        outermost loop (the latter requires the intoduction of index arrays)
88    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
89    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
90      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
91    o verification/seaice_obcs: updated for restart test and latest options
92    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
93      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
94      for now this is only available for the C-grid code and also within
95      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
96    
97    checkpoint59m
98    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
99      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
100    o gad_som : fix flux output (& diagnostics) to have same units as other  
101      advection scheme fluxes (was previously multiplied by deltaT).  
102    o added verification/seaice_obcs both to test seaice open boundaries
103      and to provide an example matlab scrpt for generating them
104    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
105    o pkg/salt_plume: clean up salt_plume_frac.F to
106      remove redundancy in PlumeMethod 1 and 4
107    o pkg/kpp: added saltplume diagnostics
108    o pkg/obcs and pkg/seaice:
109      - do not set uice and vice to zero when OB*icefile are unspecified
110      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
111      - moved seaice tracer obcs after call to seaice_growth
112    o pkg/salt_plume: added various options for salt plume depth
113      criterion and for vertical distribution of the salt
114    
115    checkpoint59l
116    o pkg/ptracers: new version of ptracers pickup:
117      read meta file and write only fields which are needed to restart.
118      ( same logic as main pickup file ; also using pickupStrictlyMatch )
119    o pkg/seaice:
120      - add timescale for melting due to warm mixed layer as a means of
121        setting SEAICE_availHeatFrac more conveniently
122      - add a CPP-flag/runtime parameter check for flooding algorithm
123      - reformulated availHeat in seaice_growth.F to be independent of AREA
124    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
125      unit changes
126    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
127    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
128      SX vector computer.
129    o pkg/seaice:
130      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
131        seaice forcing fields can now be read only through pkg/exf
132      - removed some unused halos
133    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
134    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
135      or U/VICE from U/VWIND before computing U/VSTRESS
136    
137    checkpoint59k
138    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
139      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
140    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
141      all experiments pass when compile with un-initialised var. checking option.
142    o added pkg/salt_plume
143    o script to test restart (for now, in MITgcm_contrib/jmc_script)
144    o pkg/seaice: new read/write pickup version.
145      read meta file and write only fields which are needed to restart.
146      ( same logic as main pickup file ; also using pickupStrictlyMatch )
147    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
148    o lab_sea.hb87: modify the domain & update output.hb87.txt :
149      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
150      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
151      process. Fixed here by closing the domain at the Northern boundary.
152    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
153    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
154      a set of consecutive levels in/from a 3-D array.
155    o pkg/ptracers:
156      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
157      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
158    
159    checkpoint59j
160    o in pkgs: dic, obcs, offline, rbcs:
161      standard way to compute coeff. for time interpolation between 2 time reccords
162      which retains full precision (& make results less dependent on compiler).
163      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
164    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
165      packages instead of reading ice cover and wind speed separately
166    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
167     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
168      to allow to compile customized code before the update)
169    o cleaning-up:
170      - fix CPP instruction syntax in pkg/obcs
171      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
172        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
173      - fix some threads issue in IO parts.
174    o pkg/dic:
175      - add tons of "_d 0" (--> much better testreports !)
176       and then update outputs of tutorial_global_oce_biogeo
177    o pkg/mom_fluxform:
178      add a special version of momentum advection intended to conserve momentum
179      next to a bathymetry step or a coastline edge. (default = off = #undef)
180    o new read/write pickup version:
181      - for now, only implemented for main (mdsio) pickup file.
182      - write out only what is needed to restart; merge pickup_nh , pickup_ph
183        and main pickup together.
184      - read meta file; read only what is needed to restart; stop if a field
185        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
186        if it make sense (even if the restart is not perfect).
187      - if no meta file, assume that pickup to read corresponds exactly to
188        a pickup that would currently be written.
189      - read pickup written in the old format (until checkpoint59i) if it
190        recognizes an old meta file (no field-list).
191      - add a meta file in exp. which starts from a pickup: 2 cases:
192        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
193         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
194        b) a meta file describing the content of the associated pickup file
195         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
196    o pkg/mdsio & pkg/rw:
197      - new routine to read a meta file ; new set of routine to read
198        Multiple-fields file (with meta file).
199    o added open boundary conditions capability for seaice
200        HSNOW, HSALT, UICE, and VICE
201    
202    checkpoint59i
203    o adjoint:
204      * fix multiDimAdvection adjoint
205        (partial recomputation problem by TAF for fVerT(:,:,kDown)
206        and comlev1 size definition (maxpass vs. max. number of tracers)
207      * verification/global_ocean.90x45x15 adjoint now tests
208        NLFS and multiDimAdvection using DST3 (=30)
209      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
210    o pkg/kpp: add "_d 0" to real constant (if missing);
211      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
212      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
213    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
214      for internal parameters related to restart process (formerly from PARAMS.h)
215      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
216    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
217      as argument. (only atm2d & obcs write_pickup have not yet been updated)
218    o pkg/monitor:
219      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
220      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
221      - account for deep Atmosphere factor and density factor (anelastic)
222    o added open boundary conditions capability for seaice HEFF and AREA
223    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
224      thermodynamics
225      - requires a little reorganization, which affects the testreport results
226        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
227        so that now the conservative form is tested
228      - add a few comments
229    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
230    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
231    o add new diagnostics to seaice: advective, diffusive fluxes (only for
232      multidim-advection, for scheme 2 they are not filled) and transports,
233      thermodynamic growth rates
234    o change units of EmPmR (inside the code, + within coupling interface)
235      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
236      Affects results @ truncation level (cg2d match) and update output of
237       experiments: lab_sea(6), global_ocean.90x40x15(10),
238      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
239      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
240      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
241      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
242    
243    checkpoint59h
244    o pkg/exf:
245      - improve vectorization by moving if-statement out of loops in
246        exf_mapfields, exf_radiation
247      - exf_bulkformulae.F: introduce 2D fields and vectorize code
248    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
249    o testreport:
250      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
251        monitor & update offline_exf_seaice exp. output.
252      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
253    o pkg/seaice:
254      - bug fix in the evp solver: boundary conditions were affected be
255        masking of zMax/zMin (changes results)
256      - minor bug fix in boundary conditions in seaice_calc_strainrates
257        (changes results for no_slip)
258      - seaice_lsr.F: make interpolation of eta dependent on boundaries
259      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
260      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
261        stress formulation and no-slip boundary conditions
262    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
263      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
264    o pkg/seaice: a first HSALT time stepping equation has been checked in
265    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
266      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
267      without requiring DO-IF statements
268    o pkg/thsice:
269      use continuous power-law function for partition of energy between lateral
270      melting/freezing and thinning/thickening ; old code using step function
271      still available with #undef THSICE_FRACEN_POWERLAW
272      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
273    o testreport: change AD testing : check against results/output_adm.txt
274      using same scripts as for forward test.
275    
276    checkpoint59g
277    o adjoint testing: in preparation for changing testreport:
278      - output format: cost and grad written on separated lines
279      - ad output results in directory "results" (instead of "results_ad")
280    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
281    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
282    o pkg/ecco: allow user defined cost function contributions
283    o testreport:
284      Allow to choose (per experiment) the list of tested output variables
285       and the main variable (used to issue a pass/FAIL ) ;
286      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
287      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
288      Also modify printing of summary:
289       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
290       b) echo the list of tested variables in the individual summary.txt of
291          each experiment.
292    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
293      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
294      (but still depend on the tile decompostion of the domain).
295    o pkg/seaice: change a discretization detail to make the B-grid code
296      "more symmetric". This change is likely to remove all "ridges/leads" that
297      where quasi-aligned with the grid in B-grid solutions. It may also be
298      the solution to the stress coupling issues with the B-grid.
299    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
300      remove .cvsignore from input dir. (since testreport no longer run here).
301    o pkg/thsice:
302     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
303     - fix reshaping of sea-ice just after advection:
304       melt all the ice only if ice-volume is too small.
305     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
306       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
307     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
308    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
309      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
310    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
311      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
312      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
313      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
314      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
315      -> update output.txt
316    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
317     this affects truncation error: -> update output.txt of exp:
318      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
319      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
320    
321    checkpoint59f
322    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
323    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
324      a bounded range (in forward mode)
325    o pkg/ecco, ctrl, autodiff and mom_common:
326     internal parameter controls, completements of implementations
327    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
328    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
329      (not seem any difference in testing results).
330    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
331       at face corners.
332    o pkg/generic_advdiff:
333     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
334      loop range indices for computing vertical advection tendency
335      and do the calculation in the interior only (no overlap) ;
336      for now, only implemented for SOM advection (to save CPU time).
337     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
338    o exch2 adjoint
339      First set of changes:
340      - add exch2 hand-written adjoint templates
341      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
342        This will require cleanup in pkg/autodiff/*.F
343        (changed routines currently kept separate in verif. code/)
344      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
345        that used to hide exch2 or cubed-sphere specific code
346        (commented via 'cph-exch2')
347    o pkg/seaice
348      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
349    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
350       output of global_ocean.cs32x15.thsice .
351    
352    checkpoint59e
353    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
354      for B-grid vector (not yet tested) and C-grid vector (<- only used
355      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
356    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
357      (#ifdef ALLOW_SALT_PLUME)
358    o gather_2d/scatter_2d: removed halo regions
359    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
360      scheme and the corresponding test case (under front_relax dir). For now,
361      only available with Skew-flux form and not yet tested in realistic set-up.
362      adjoint: store directives updated, but gradient checks deteriorated,
363      so maybe GM/Redi adjoint is now broken.
364    o seaice adjoint
365      * add AREA, HEFF, HSNOW as control variable
366        (should not change lab_sea results)
367      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
368    o pkg/seaice:
369      * added computation of saltFlux in seaice_growth;
370        For time being, sea ice salinity is assumed constant
371        contribution of snow flooding to freshening of sea ice is neglected.
372        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
373        defaults to 0.0 in order to maintain backward compatibility.
374        Typical values for SEAICE_salinity are 4 to 10 g/kg.
375      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
376      * added SEAICE_availHeatFrac, which specifies fraction of surface level
377        heat content used to melt or grow ice
378      * commented out cap of HICE: it helps keep ice thinner
379      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
380      * applied OBCS T/S mask to HEFFM sea ice mask
381    
382    checkpoint59d
383    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
384     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
385     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
386    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
387     and change default value of parameter "GM_Small_Number";
388     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
389       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
390       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
391    o pkg/ecco: cost function when applying pkg/smooth to controls
392    o pkg/ctrl: add forcingPrecond run time parameter
393    o pkg/seaice:
394     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
395     - fix bug in metric terms of u-equation in LSR solver (implicit part),
396       changes verification/lab_sea
397     - rearrange implicit part of u-equation in LSR solver to make it easier to
398       read, understand, and debug. This causes changes at the truncation level.
399     - fix (serious) bug in the boundary conditions (sign error in the implicit
400       part) of the LSR solver. Changes all LSR results.
401     - fixed problem with HSNOW initialization to avoid thick snow when AREA
402       is initilized with small values - does not change lab_sea results.
403     - added HsnowFile initialization capability
404    o pkg/smooth: addition to model/src and pkg/ctrl so allow
405     initialization of pkg/smooth and application to control vector
406    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
407    o dependencies: pkg/profiles requires pkg/cal
408    o pkg/profiles:
409     - added option ALLOW_PROFILES_GENERICGRID
410         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
411         that interpolation information (grid points and coefficients) is provided
412         within the netcdf input files.
413         -> sample matlab scripts can be found in MITgcm_contrib/gael
414         that allow you to prepare netcdf input files.
415     - also modified: cleaner include statements, cleaner error print statements,
416       cleaner stops when error, and more tests of the netcdf input files consistency.
417    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
418    o pkg/seaice:
419     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
420       requires a new routine: seaice_diagnostics_fill.F
421     - make sure that seaice does not move if not forced (pressure replacement
422       method, Hibler and Ip, 1995), changes results
423     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
424     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
425       It is turned off by default (=-1.), because it changes the results.
426     - make it possible to read AREA from a file, too.
427    
428    checkpoint59c
429    o add S/R and diagnostics for oceanic mixed-layer depth
430    o move GMRedi call after all vertical mixing schemes (including KPP)
431    o pkg/thsice:
432     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
433      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
434    o pkg/obcs:
435     - bug fix for balance code
436    o pkg/seaice:
437      - allow values of SEAICE_elasticParm > 1
438      - add new parameter SEAICE_evpTauRelax as an alternative
439        to SEAICE_elasticParm
440      - make lsr boundary conditions free slip (by default), changes result
441      - add code for no slip boundary conditions for lsr
442      - set minimum of zeta to zero (and not 4e8) (changes results)
443      - add a cap on AREA after advecting AREA if seaice_growth is not called
444    o change calculation of Visbeck K:
445      - no longer depend on tapering scheme; instead, compute slope (limited
446        by GM_maxSlope). this is equivalent to what was comuted before with
447        clipping or linear tappering.
448      - fix vertical averaging (wrong by 1/2 level)
449      - leave the old version (but will not be maintained) within
450        #ifdef OLD_VISBECK_CALC / #endif
451      - update output of exp. ideal_2D_oce
452    o change error catch in calc_r_star to improve vectorization
453    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
454      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
455    o adjoint:
456      Re-organized adjoint checkpointing according to Matt Mazloff
457      (but with modifs/completions/cleanups)
458      Storing is now bundled into large arrays to optimized I/O
459      (and second step in cleanup of the_main_loop)
460    
461    checkpoint59b
462    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
463      - export/import (between ocean & coupler) fields needed for ocean DIC.
464    o pkg/seaice:
465      - get rid of three more exchanges seaice_calc_viscosities (required
466        different loop boundaries in seaice_lsr and seaice_ocean_stress)
467      - bug fix in seaice_ocean_stress (update of lab_sea required)
468      - reduce loop boundaries to necessary minimum also in seaice_evp
469      - go back to the old way of computing deltaC/Z as the adjoint likes that
470        better
471    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
472      passive tracer to an Age Tracer) + update output.txt
473    o pkg/exf:
474      - implement A-grid / C-grid selection for wind-stress input files.
475      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
476      for now, in exf_bulk_largeyeager04.F only :
477      - change implementation for case where windspeed + 2. components wind-stress
478        are read-in. AND use rhoConstFresh to convert evap.
479    o pkg/seaice:
480      - use correct EXCH_UV for wind-forcing (on A-grid).
481      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
482        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
483    o pkg/exf:
484      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
485      EXF_INTERPOLATION:
486      - merge global_with_exf/code version of exf_interp_read.F
487        to the main code ;
488      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
489        reading the file ; Important: This options needs to be defined to recover
490        previous code.
491        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
492      - no longer loose real*8 precision along the way when using exf_iprec=64.
493    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
494      - change discretisation of evp-solver in order to avoid another exchange
495        (changes lab_sea) and clean up a little
496      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
497        help the adjoint (this also changes the results slightly)
498      - add a few "_d 0" where they had been missing in seaice_evp.F
499      - cleaning up: remove unused seaice_calc_rhs.F
500    o pkg/exf: some cleaning-up:
501      - change various "constants" into runtime parameters
502      - cleaned-up Large&Yeager04 routine which should eventually
503        replace exf_bulkformulae.F (changed names of S/R and CPP)
504        and merged various ALLOW_ATM_WIND options
505     only used with thsice pkg (in thsice_get_exf.F):
506      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
507        which are used when useStabilityFct_overIce=TRUE (= the default)
508      - change default values of ice & snow emissivity and scale downward LW
509        by ice & snow emissivity.
510    o pkg/thsice:
511     fix few little problems, in thsice_calc_thickn.F:
512      - growth vertically (and not laterally) if iceFrac == iceMaskMax
513      - melt only laterally if hIce < hThinIce (as the comments say)
514      and in thsice_extend.F:
515      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
516      - start to form ice as soon as the minimum ice-volume is reachable.
517     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
518      and cpl_aim+ocn
519    o pkg/kpp
520     - move computation of surface related input fields to KPP into a new
521       subroutine kpp_forcing_surf.F
522     - remove wrong (within bi,bj loops) EXCH calls.
523     - little cleaning (add argument myThid in last position, cvs header ...)
524     - for now, fix conservation problem by exchanging KPPviscAz (may not
525       be the best fix)
526    o pkg/seaice
527     - check for inconsistent evp parameter/cpp-flag combination
528     - remove leftover errIO flat for obsolete name list error handling
529    o OpenAD
530     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
531    
532    checkpoint59a
533    o pkg/seaice: some parameter clarifications and a little bit of clean up
534    o pkg/thsice: rename run-time parameters:
535       himin       -> hIceMin
536       himin0      -> hThinIce
537       hihig       -> hThickIce
538       i0          -> i0swFrac
539       transCoef   -> bMeltCoef
540       frac_energy -> fracMelting
541      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
542       with default values (for now) that do not change the results.
543      remove old version of thsice vars advection in pkg/seaice.
544    o in FFIELDS.h:
545      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
546      - make pLoad & sIceLoad always available (but still only used if
547         ATMOSPHERIC_LOADING is #define).
548    o pkg/kpp: replaced _KPP_RL with _RL
549    o bug fixes for vertical diffusivity computations when both KPP and
550        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
551        are no longer updating the vertical diffusivity array
552        (passed as argument) but are (re-) setting those arrays.
553    o pkg/seaice: fix bug in evp solver, while doing that
554      - change (improve?) discretization of stress computations for both
555        cgrid-lsr and evp solver
556      - add a new routine to compute strain rates
557      - the above changes lab_sea results
558      - add no slip conditions for evp solver (off by default), lsr-version
559        may follow
560      - fix exchange for shear at Z-points (does not change lab_sea)
561      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
562        (to force the user to pick a time step since there is not "safe" way
563        of choosing it)
564      - add principal stress diagnostics
565      - rearrange fields for evp a little to avoid having to call a: too many
566        exchanges and b: exchanges for stress trensor components which we do
567        not have.
568      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
569        of evp, complete rewrite for lsr case (latter is does not yet work
570        in all cases)
571    o pkg/kpp: add code to have mixing in shelf ice caverns
572      - add myThid to all kpp routines (long overdue)
573    
574    checkpoint59
575    o pkg/exf:
576      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
577        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
578      - move exf header files from lower_case.h to UPPER_CASE.h ;
579        add missing cvs Header & Name
580      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
581      - add namelist param. selectStressGridPosition, exf_monFreq
582      - retire many _CLIM routines, and remove data.exf_clim
583        + params moved to data.exf
584        + climsst, climsss now handled by exf_set_gen, i.e.
585          climss?period=0 refers to constant field,
586          climss?period=-12 to monthly forcing
587      - split up namelists in data.exf
588    o pkg/seaice:
589      - remove seaice_exch and seaice_exch_uv
590      - remove superfluous exchange of theta
591      - add myThid to seaice_budget_ocean/ice
592      - add new interface for atmospheric wind forcing (C-grid only)
593        + new routine
594        + two new field (taux, tauy for stress over ice)
595        + removed one global field (DAIRN) for C-grid case only
596    o pkg/thsise
597      - 2nd set of modifs for thsice adjoint in conjunction with exf
598    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
599    
600    checkpoint58y_post
601    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
602      vertical diffusivity, similar to that in MOM4; turned on using
603      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
604      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
605    o Added capability for 3D specification of background vertical diffusion
606      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
607      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
608      "data" file that contains the 3D vertical diffusivity coefficients.
609    o ice dynamics (pkg/seaice) with thsice thermodynamics:
610      - add code within pkg thsice to advect & diffuse sea-ice fields
611      similar to (and will replace) what has been added in  seaice_advdiff.F,
612      but: - conserving Mass, Heat & Salt.
613           - better when using non-linear advection scheme (not yet fully tested)
614           - can also be used in atmospheric set-up (for now, only the diffusion).
615    
616    checkpoint58x_post
617    o IO option for global-file compact format:
618      - add options when generating topology (utils/exch2/matlab-topology-generator)
619      - add I/O capability (pkg/mdsio).
620      - adapt utils/matlab/rdmds.m to read this format.
621      for now long-line format not yet supported by pkg/mdsio (& exch2).
622    o shelfice: add a few diagnostics
623    
624    checkpoint58w_post
625    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
626      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
627      (and replace horiVertRatio in NH code).
628      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
629                         and tutorial_plume_on_slope (sensitive to truncation)
630    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
631      directly to drive seaice model (C-grid only)
632    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
633     - reintroduce computation of wind from stress,
634     - compute tau (in exf_bulkformulae.F) from windstress averaged to
635       mass points to avoid tau = 0
636     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
637    o rdmnc.m: make it work with "global" files created with gluemnc
638    o rdmnc.m : some improvements in dealing with singleton dimension
639      (tested on all testreport mnc output files).
640    o genmake2: disable pkg/profiles if netcdf test fails.
641    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
642    o move call to cal_readparms up to make calendar parameters/variable available
643      to all packages
644    
645    checkpoint58v_post
646    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
647      useDynP_inEos_Zc tested.
648    o pkg/exf: changes to properly interpolate/mask/scale initial fields
649    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
650      and portions thereof.  See read_cs.txt for description and examples.
651    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
652      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
653      following the great-circle arc between those 2 points.
654    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
655      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
656    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
657     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
658     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
659     - still needs work (not working with some options ; efficiency to improve)
660       and serious testing.
661     - use this scheme for temperature & salinity in 2 advection test exp.:
662       advect_xy & advect_xz, respectively.
663    
664    checkpoint58u_post
665    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
666    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
667    o testreport: add option "-skipdir" to skip some test.
668    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
669      momentum calculation.
670    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
671    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
672      remove checkpoint.F and the_correction_step.F (no longer used);
673      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
674    o add option (linFSConserveTr) to correct for tracer source/sink due to
675      Linear Free surface
676    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
677    o pkg/thsice: fix reading mnc-pickups
678    
679    checkpoint58t_post
680    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
681    o pkg/mdsio:
682     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
683       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
684       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
685     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
686     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
687       either MDS_READ_FIELD or MDS_WRITE_FIELD )
688     - new S/R (to replace MDSWRITEMETA), which allows to write more
689       informations (variable names, time ...) to meta files.
690     - modify rdmds.m to give back the meta file content.
691    o pkg/diagnostics: change vertical interpolation to be safer, and more
692       flexible (define p-levels to interpolate to in data.diagnostics);
693      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
694       diagnostic pointer.
695    o pkg/seaice: more cleaning up of seaice_growth, added many comments
696    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
697    o fix multi-category seaice:
698     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
699       SEAICE_MULTICATEGORY
700     - fix short wave heat flux
701    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
702       and allow to use EVP solver. Change forward lab_sea: test both EVP
703       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
704    o Initial check-in of lab_sea adjoint
705      (very similar to natl_box_adjoint/code_seaice)
706      * used C-grid and EVP solver
707      * used KPP, GM/Redi
708      * uses inAdExact=.TRUE.
709      * gradient checks fail for both ADM and TLM
710        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
711        f.d. gradients actually seem more problematic than ADM, TLM gradients;
712        issue is related to forward mismatch between g77 an ifort
713    o pkg/seaice: overhaul of thermodynamics
714     - growth.F and groatb.F are replaced by new routine seaice_growth.F
715     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
716     - move a few global fields out of SEAICE.h into seaice_growth.F and
717       make them 2D (FICE/QNETO/ ...)
718     - remove FO (it is the same as QNETO)
719     - introduce a few local fields to avoid modifying external fields such
720       as atemp, etc.
721    
722    checkpoint58s_post
723    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
724      changed exf_set_gen.F so that
725        genperiod=0 means input file is one time-constant field and
726        genperiod=-12 means input file contains 12 monthly means
727    o CG2D: use pre-computed solver main-diagonal (stored in common block);
728      this affects truncation error ; generate new output file for exp. which
729      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
730        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
731        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
732        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
733        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
734        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
735    o start implementation of deep-atmosphere and anelastic formulation
736    o verification: remove 2nd copy of input files and use script "prepare_run"
737      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
738    o mom_common/vecinv/fluxform: fix a few initialisation isssues
739    o profiles: fix for multithreaded case
740    
741    o diagnostics: rename few diags:
742      s/'PRESSURE'/'RCENTER '/g
743      s/'TICE    '/'oceFreez'/g
744      s/'TAUX    '/'oceTAUX '/g
745      s/'TAUY    '/'oceTAUY '/g
746      s/'SWFLUX  '/'oceQsw  '/g
747      s/DIFx/DFxE/g
748      s/DIFy/DFyE/g
749      and add few ocean-forcing diagnostics:
750      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
751    o modifications to pkg/seaice/growth.F and budget.F, which change results of
752      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
753      as actual snow thickness.  It now refers everywhere to effective snow
754      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
755    
756    checkpoint58r_post
757    o modifications to pkg/seaice/growth.F, which change results of
758      lab_sea experiment: fixes pertain to melting snow over open water, to
759      masking EVAP under sea ice, and to using the correct AREA variable for
760      computations of EVAP, PRECIP, HSNOW, and GHEFF
761    o add ability to read bathy, salt, and theta using MNC (off by def)
762    o add flooding algorithm and advection of HSNOW for pkg/seaice;
763      both are turned off by default and do no change any results
764    o seaice advection with pkg/thsice: a step toward the use of non-linear
765      advection scheme, but #ifdef or commented out for now (requires more EXCH).
766    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
767      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
768      in natl_box (affects results @ truncation level: update output.txt)
769    o multi-threading and IO:
770      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
771      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
772        (needed to work with SingleCpuIO): tested in all verif. exp.
773    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
774      affects the results (but none of the verification test uses this scheme).
775    o Adding some pkg/diagnostics capability to pkg/seaice
776      (will certainly be subject to changes)
777    o ctrl: adding new control variables:
778      lwflux, lwdown, evap, snowprecip, apressure, runoff
779    
780    checkpoint58q_post
781    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
782      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
783      high_res_cube configuration by 4% on Columbia.
784    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
785      add (in global_with_exf/code) a version of EXF_INTERP_READ without
786      dynamical allocation (seems to work in multi-threaded).
787    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
788      single CPU io) so that TAF does not have to see EESUPPORT.h
789    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
790    
791    checkpoint58p_post
792    o obcs: stop if obcs is used with useCDscheme = .true.
793    o shelfice:
794     - fix a sign error so that no slip at shelfice interface works
795     - remove stop for combination non-hydrostatic code and shelfice. That does
796       not mean, that the results are correct, but at least they are numerically
797       stable
798    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
799    o added adjoint exch routined for all exch*3d* routines
800      and updated flow directives
801    
802    checkpoint58o_post
803    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
804      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
805    o change controling S/R for writing pickup file (new S/R do_write_pickup)
806      and clean-up reading/writing of pickup files.
807    o fix local version of read/write pickup (NH part) in rotating_tank/code
808    o simplify EXCH interface:
809     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
810     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
811    o added the regrid package
812    o shelfice:
813     - add a simple boundary layer scheme to reduce noise
814     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
815    
816    checkpoint58n_post
817    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
818       local variable (not in common block).
819    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
820      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
821      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
822        to work with SingleCpuIO.
823    o add "_d 0" to real constant of pkg/cfc subroutines ;
824       update exp. cfc_exemple & tutorial_cfc_offline output files.
825    o multi-threading and IO:
826      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
827        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
828      - barrier before and after reading.
829      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
830      - avoid using MDS_WRITELOCAL for LAND pkg output.
831      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
832        common-block variables ; Allows multi-threading with master-thread IO.
833    o change default MAX_NO_THREADS from 32 to 4 ;
834      and stop cleanly when MAX_NO_THREADS is too small.
835    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
836    
837    checkpoint58m_post
838    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
839       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
840    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
841       keep global_ocean.90x40x15 (for AD testing) with former secondary test
842       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
843    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
844        add MITgcm_tutorials (= code + all the tutorials)
845    o ecco, option to compute cost for total ssh (mean+anom)
846    o consistent with addition of ptracer and ssh in pkg/profiles
847    o profiles: adding ptracer and ssh
848    o testreport: change multi-test output-file name
849      (from output.txt.{name} to output.{name}.txt)
850    o profiles: now ok for mutli-tiles case
851    o seaice: add 4 parameters for different advection schemes for area,
852      (effective) seaice thickness, enthalphy, and snow height. Their default
853      is the standard parameter SEAICEadvScheme
854    o calc_gw:
855     - add cosFacU in zonal viscous flux (harmonic.visc.).
856     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
857       of tutorial_plume_on_slope.
858    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
859    o calc_gw: true flux-form, account for horizontal grid spacing.
860      update rotating_tank results, but not plume_on_slope (affected at
861      truncation level, 11 digits).
862    
863    checkpoint58l_post
864    o calc_gw:
865     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
866     - remove side-drag for now (need to fix it); update plume_on_slope results.
867     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
868    o commit code to make SST/SSS weights spatially variable
869      (based on either variable in-situ or variable initial T/S weights)
870    o pkg/ecco:
871      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
872        now based on horizontally varying weights wthetaLev, wsaltLev
873      * cost_averagesflags now returns year indices in addition to day, month
874      * sflux balance is performed on annual basis
875        (sflxumm, sfluxmm2, bal_sfluxmm)
876      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
877        including separate counting and multipliers
878    o pkg/rbcs
879      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
880    
881    checkpoint58k_post
882    o testreport:
883     - always build in dir. "build" (if not there, mkdir build instead of building
884       & running in input)
885     - run in dir run (if it exists), in build otherwise.
886     - call prepare_run (if input/prepare_run exists)
887     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
888    o pkg/exf modifications to interpolation and rotation routines for more
889       reasonable treatment of North Pole singularity: for tracers North Pole
890       value is set to northernmost zonal-mean value, for zonal velocity it is
891       set to zero, and for meridional velocity it is set to northernmost value.
892    o pkg/exf/exf_check_range.F
893     - add tile index to diagnostics and move stop statement to the very
894       end of the routine.
895    o pkg/diagnostics: (diagnostics_main_init.F)
896      define title of isomorphic variables according to the current config.
897    o pkg/thsice with pkg/seaice dynamics:
898    - fix domain of computation (interior only, required for exf) and do exchanges
899    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
900    o towards a standard way of dealing with multi-threading in MONITOR
901      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
902    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
903       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
904    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
905    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
906    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
907       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
908    o tracer advection:
909     - clean-up and simplify calc_common_factors.F
910     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
911       advection subroutine (but still not used within DST advection S/R)
912    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
913    
914    checkpoint58j_post
915    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
916      from file (collects calls previously in FORWARD_STEP)
917    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
918    o adjoint store dir. adjusted accordingly
919    o genmake2
920      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
921    
922    checkpoint58i_post
923    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
924      on wind stress (SEAICEstressFactor defaults to 1.)
925    o Total number of Timers is finite (<=40): comment out 2 non-essential one
926      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
927    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
928      on CS-grid: no longer loosing mass.
929    o exf & curvilinear-grid: no longer modify longitude xC & xG.
930    o pkg/ggl90: fix sloppy output and fix a bug
931    o pkg/seaice: added SEAICEuseEVPpickup parameter
932      - Set to false in order to start EVP solver with
933        non-EVP pickup files when using SEAICEuseEVP
934      - fix sign error in diffusion in seaice_calc_rhs
935    
936    checkpoint58h_post
937    * Modifications for bottom topography control
938      o replace hFacC by _hFacC at various places
939      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
940      o add non-self-adjoint cg2d_nsa
941      o update autodiff support routines
942      o re-initialise hfac after ctrl_depth_ini
943      o works for 5x5 box, doesnt work for global_ocean.90x40x15
944    * Adding verification for 5x5 box (4-layer) bottom topography control
945    
946    checkpoint58g_post
947    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
948       used for mean seasonal cycle, mean diurnal cycle); add an example
949       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
950    o pkg/ggl90:
951      - add parameter (minimum surface kinetic energy)
952      - fix bug (avoiding division by zero)
953    o couple pkg/thsice to pkg/seaice:
954      - modify advection in seaice to accomodate new scalar fields to be advected
955      - only muliDimAdection scheme work with seaice/thsice
956      - mapping of thsice-variables to seaice-variables, back and forth
957      - does not break the verification experiments, but does not give the
958        desired results either
959    o pkg/seaice
960      - make (default) second order advection a bit less confusing?
961    
962    checkpoint58f_post
963    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
964      to pkg/seaice):
965      - new routines thsice_map_exf and thsice_get_exf provide the interface
966      - add an additional formal parameter to thsice_solve4temp
967    o pkg/exf:
968      - add new fields wspeed, snowprecip (to be able to couple to thsice)
969      - correct Stefan-Boltzmann constant
970      - new parameter for longwave surface emittance
971      - separate some stuff from exf_bulkformulae into new routines  
972        exf_radiation, exf_wind
973      - add new parameters and constants: longwave emissivity for ocean, ice
974        and snow, evaporation parameters over ice
975      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
976        either wind from stress or stress from wind
977    o pkg/thSIce:
978    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
979    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
980       and THSICE_CALC_THICKN
981    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
982    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
983      to make debugging easier.
984    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
985    o pkg/bulk_force:
986      - clean-up comments and parameters ;
987      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
988    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
989      generate new output for test-experiment: aim.5l_cs.thSI
990    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
991      testreport accordingly
992    
993    checkpoint58e_post
994    o SEAICE_CGRID adjoint done
995    o R_STAR adjoint implemented.
996      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
997      * need to sort out init. of h0facc, etc.
998    o Make pkg/profile fully independent of ecco,cost, etc. stuff
999      to be able to use it in pure forward.
1000    
1001    checkpoint58d_post
1002    o upgrade simple test-experiment to tutorial example:
1003     step.1: duplicate the experiment and (step.2) will remove the old copy.
1004      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1005      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1006      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1007      tutorial_global_oce_biogeo    <- copy of dic_example
1008      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1009      tutorial_plume_on_slope       <- copy of plume_on_slope
1010      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1011      tutorial_global_oce_optim     <- empty for now (David ?)
1012      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1013     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1014    o correct a sign problem in cost_scat.F
1015    o obcs and ptracers: fix boundary conditions for advections schemes
1016      with larger stencil
1017    o thsice adjoint: start
1018    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1019      completeness
1020    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1021      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1022    o ptracers adjoint:
1023      * avoid extensive recomputatations
1024      * fix missing re-init. of gptr (missed by TAF)
1025    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1026      me to turn off the excessive output to STDOUT that this package produces
1027    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1028      and add those terms in Vector-Invariant formulation.
1029    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1030      if the control period (xx_hfluxperiod etc) is 0
1031    o in profiles pkg, clean routines and fix details
1032    o in ecco pkg, reading ssh data:
1033      fix problem in case the model does not start at iter0=0
1034    o fix mnc-pickup/restart for ptracers
1035    o new package prifiles:
1036      code to compute profile-based cost by Gael Forget
1037      (modifs in ecco, ctrl, autodiff)
1038    o Benign bug fix in initialization (spotted by M. Mazloff) of
1039      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1040    
1041    checkpoint58c_post
1042    o adjoint: finish NLFS adjoint and provide reference output in
1043      verification/global_ocean.90x40x15/results_ad_nlfs
1044    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1045      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1046      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1047      with SEAICE_CGRID defined.
1048    o move calendarDumps from "data" to "data.cal" and clean-up the code
1049      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1050    o add useEXF & useCAL flags (for now, set in hard-coded way)
1051    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1052      (were missing in NH mode, and wrong in quasihydrostatic mode).
1053      waiting for Chris updated version of calc_gw to add those CALLs.
1054    o fix bug in quasihydrostatic S/R ;
1055      add a test for this option: global_ocean.90x40x15.qshyd
1056    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1057      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1058    o add on/off flag useOffLine for package OFFLINE
1059    o seaice:
1060      - modify advection so that it works also on the C-grid
1061      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1062        problem in multi-tile runs with C-grid
1063      - add flags for clipping ice velocities and/or masking solver forcing
1064      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1065        C-grid solver
1066      - added a few comments to seaice_diffusion.F
1067      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1068        are now exclusive)
1069      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1070        required re-ordering the code a little:
1071       + make DAIRN global variable (defined in SEAICE)
1072       + move computation of the viscosities eta and zeta into a new separate
1073         routine (because I need to recompute them in seaice_ocean_stress.F)
1074    
1075    checkpoint58b_post
1076    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1077      update output.txt of exp. aim.5l_cs.thSI
1078    o various mnc cleanups and improvements:
1079      + shrink lookup tables by factor of ~4
1080      + better error reporting when running out of lookup space
1081      + able to handle longer path/file names (up to 500 chars)
1082    o adjoint:
1083      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1084      - TBD: "hidden" mom_vecinv recomp. in dynamics
1085    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1086     (allow to differentiate between forcing components using new integer flags:
1087      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1088     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1089    o ecco
1090      - enable trend removal from SSH anomaly obs.
1091    o adjoint
1092      - a fix for PmEpR when #undef EXACT_CONSERV
1093      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1094      - try to fix "hidden" recomp. in forward_step for NLFS
1095        (NLFS seems broken sometimes after I checked it in)
1096    o seaice:
1097     - add c-grid version of the dynamic solver:
1098       + three new routines that are the c-grid substitute lsr, dynsolver
1099         and ostres
1100       + put a few fields that were local to dynsolver into global common
1101         blocks, so that I can move the computation of stresses etc into
1102         seaice_lsr (saves coding but may break the adjoint).
1103     - replace more hardwired parameters by runtime parameters
1104     - add ice masks that mask the rhs of the implicit solvers where there
1105       is no ice (commented out in seaice_dynsolver, because i am not sure
1106       if this works properly), eventually this should replace the clipping
1107       of ice velocities in seaice_dynsolver to +/-40cm/s.
1108    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1109      include it only where its needed
1110    o move balancing of fluxes before the call of external_forcing_surf
1111    o seaice:
1112      - correct units of turning angles (now they are really in degrees)
1113      - move computation of GWATX/Y out of main routine into dynsolver
1114      - initialize GWATX/Y in seaice_init
1115    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1116      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1117    o seaice: add runtime flags for turning angles (default to zero)
1118    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1119      and trend from exf forcing and ctrl control adjustments
1120    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1121      (since checkpoint57x_post)
1122    o change the default rotation period to 86164.s = the Earth rotation
1123    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1124      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1125    o seaice advection: add code for choosing between the default (2nd order
1126      central differences) and multiDim advection schemes provided by
1127      pkg/generic_advdiff
1128    o seaice:
1129      - removed all references to SEAICE_GRID.h fields from
1130        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1131        (cubed-sphere configuration will change a little)
1132      - grid computations in seaice_init are obsolete now.
1133      - cleaned up code a little so that is easier to read (hopefully).
1134      - added new (better?) discretizations of default advection and diffusion
1135        (turn on with SEAICEuseFluxForm)
1136      - replace 1 in 3d global fields by kSurface in growth.F
1137      
1138    checkpoint58a_post
1139    o seaice:
1140      - bug fix in advect.F
1141    o shelfice:
1142      - separate shelfice load anomaly from pload (breaks with time
1143        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1144        Its default is 0., but it may be computed more cleverly from (unknown)
1145        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1146        done offline. A good approximation of the pressure load anomaly is
1147        necessary to avoid large initial adjustment processes underneath
1148        deep-reaching shelfice.
1149      - small fix in ISOMIP shelfice_thermodynamics
1150      - add more sophisticated thermodynamics of Hellmer (1989), this is
1151        now the default
1152      - give a few constants more intuitive names
1153    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1154      if bulk formulae are used in long integration (especially EmPmR). Turn
1155      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1156      if balancePrintMean, the imbalance that is substracted is printed to
1157      STDOUT.
1158    o fix bug (typo) in obcs_apply_eta.F
1159    o add a new package shelfice which enables us to model the circulation
1160      underneath shelf-ice with draughts of hundreds of meters.
1161     - works
1162     - to do: + include improved thermodynamics
1163              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1164                instead of new field kTopC
1165              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1166                instead of new field R_shelfIce and new code in ini_depth.F
1167                and ini_mask_etc.F?
1168              + adjust vertical mixing schemes?
1169    o seaice pkg:
1170     - add a cpp-flag to include a simple formula for a salinity dependent
1171       freezing point of sea water at the surface
1172     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1173       meridional stresses are now different (and hopefully correct)
1174    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1175       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1176       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1177    o pkg/diagnostics: add options and parameters for regional-statistics
1178       diagnostics ; define regions by reading a region-mask from a file
1179       (might add other options later)
1180    o pkg/bulk_force:
1181     - add option and parameters to use AIM surface-flux formulae.
1182     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1183       others forcing fields (defined in PARM05, parameter file "data") are loaded
1184       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1185     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1186     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1187     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1188       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1189     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1190    
1191    checkpoint58
1192    o add "--embed-source" option to genmake2 which, when the supporting
1193      tools can be compiled (as determined by genmake2) will turn on the
1194      embed_files package which then embeds the entire MITgcm source code
1195      (*.[fFhc] + Makefile) used for the build within the executable
1196      - requested by CNH but off by default
1197      - adds a paltry <9MB to the mitgcmuv executable in most cases
1198      - only writes the output when useEMBEDSRC in eedata is true
1199    o clean up 3-dim. relaxation codes:
1200      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1201      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1202      * Thanks to Tom Haine for testing!
1203    
1204    checkpoint57z_post
1205    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1206      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1207    o fix the pickup behavior for obcs in combination with ptracers
1208    o fix a bug in ptracers_external_fields_load
1209    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1210      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1211    o transfered surface NH pressure to eta field (if exactConserv).
1212    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1213         and update lab_sea output.txt file.
1214    o completing 3-dim. relaxation code: additional term
1215         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1216      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1217      * At compile time, in "EXF_OPTIONS.h" set
1218          #define  ALLOW_CLIMTEMP_RELAXATION
1219          #define  ALLOW_CLIMSALT_RELAXATION
1220      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1221          tauThetaClimRelax3Dim = 15552000.0,
1222          tauSaltClimRelax3Dim  = 15552000.0,
1223      * 3 cases:
1224          1) Use a constant-in-time 3-dim. field
1225          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1226          3) Real-time relax. to time-evolving prescribed field
1227    o Adding Laplacian-type smoothness constraint on
1228      initial and boundary (forcing) controls (ic, bc)
1229      * enable at compile-time via
1230        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1231      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1232      * Absolute scale somewhat unclear so far
1233      * no area weighting was included since no other cost term does so far
1234    
1235    checkpoint57y_post
1236    First step for a NLFS adjoint
1237    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1238    o new init. routines for calc_r_star, calc_surf_dr
1239    o still need to deal with ini_masks_etc
1240    o testreport seemed happy
1241    checkpoint57y_pre
1242    
1243    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1244    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1245    o add new offset feature to offline pkg (plus minor cleanup)
1246    o cfc fixes for final year of integration
1247    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1248      be in GCHEM_OPTIONS).
1249    
1250    checkpoint57x_post
1251    o fix testreport Pb in multiple test experiment.
1252    o cleanup our namelist syntax in verification:
1253      - make it more F95 standards compliant (some work still needed)
1254      - allows the vast majority of our tests to work with gfortran
1255    o Non-Hydrostatic:
1256     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1257     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1258    o Allow to apply AB on T,S rather than on AB(gT,gS):
1259     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1260     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1261       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1262     - need a "clever" read_pickup to restart from the other AB formulation
1263    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1264    o remove some unused variables (reduces number of compiler warnings)
1265    o adjoint
1266      * Disable useVariableViscosity for adjoint for time being
1267        (there are a number of extensive recomputations)
1268      * Initialize certain variables needed for adjoint
1269    
1270    checkpoint57w_post
1271    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1272                 fix the singleCpuIO RS version of MDSWRITEFIELD
1273       and add a WARNING if using globalFiles=T with multi-processors.
1274    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1275      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1276    o tracer advection scheme:
1277      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1278       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1279       was not very convenient).
1280      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1281       (further tests needed for the implicit DST & Flux-Limiter schemes).
1282    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1283      and sRef for convenience, handy, when you want to initialize
1284      ptracers in a large domain with a constant non-zero value. Also,
1285      untangle ptracers_init.F a little.
1286    
1287    checkpoint57v_post
1288    o change dome exp. to use variable viscosity in side-drag terms.
1289    o remove all the files from the cfc_offline test since they are now
1290      incorporated into tutorial_cfc_offline which has been producing
1291      identical results for a few days of testing
1292    o add new parameter: sideDragFactor to enable half-slip-side BC
1293      and change side-drag S/R to use viscosity from mom_calc_visc
1294      (can switch back by setting sideDragFactor=0.); affects results at
1295      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1296       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1297    o vorticity & strain are now computed without masking, to account for
1298      no-slip-side BC in variable viscosity calculation ; mask is applied
1299      anyway later on, before computing advection/coriolis terms.
1300    o modify exp4 to test new obcs support for reading from external files
1301      and for passive tracers
1302    o fix behavior of ptracers_monitor when monitor output is written to a
1303      netcdf-file; still not independent of monitor.F (writes in the same
1304      file).
1305    o change default value of tRef (put a uniform, meaningful value for ocean
1306      & atmos) and initialize sRef (was missing, as Martin mentioned).
1307    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1308      to be proportional to enstrophy dissipation length.  Thus,
1309       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1310      This is now consistent with Smagorinsky and with the manual.
1311    
1312    checkpoint57u_post
1313    o OBCS and PTRACERS: add open boundary support for passive tracers
1314      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1315        OB-values from file; this is not different from the way theta and salinity
1316        are treated
1317      - however, Orlanski-radiation conditions are not supported, and the model
1318        will stop if you use pTracers and Orlanski at the same time.
1319      - beefed up the rountine obcs_external_fields_load: now only those open
1320        boundary values are overwritten with values from files for which there
1321        are really files, otherwise the OB-fields remain untouched. This makes
1322        it possible to use different OBs at different ends of the domain (as
1323        with EXF)
1324    o reduce number of exch calls in shap_filt (s2).
1325    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1326      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1327    
1328    checkpoint57t_post
1329    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1330    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1331      same truncation, independent of the face number: affects affects several
1332      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1333    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1334      note that biharmonic viscosity + no-slip was not tested in any experiment.
1335    o fix bug in non-linear free-surf side-drag ; generate new output for
1336      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1337    o make mnc honor the writeBinaryPrec flag for most kinds of output
1338    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1339    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1340      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1341    o add brackets in multi-terms sum to get same truncation, independent of
1342      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1343      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1344    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1345      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1346      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1347      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1348      Suggested values of viscosity parameters found in mom_calc_visc.
1349      Many new viscosity diagnostics available.
1350    
1351    checkpoint57s_post
1352    o Add clearing-house for viscosity calculations, mom_calc_visc and
1353      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1354      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1355      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1356      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1357      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1358      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1359      ViscAhStrain and viscAhTension are now retired.
1360    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1361    o In response to JMC's bug report, genmake2 now ignores any soft-links
1362      that it finds in the *current* directory when searching for files.
1363      Soft-links found in any other source directories will still work as
1364      they did before.
1365    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1366      a C routine to unlimit the stack size
1367    o mnc-ify pkg/aim snapshot vars
1368    o mnc-ify pkg/land as requested by Daniel
1369    o various changes to mnc including:
1370      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1371      - output can now be grouped so that all files within a group
1372          change the ITER portion of their names in lock-step together
1373      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1374          and works with both EXCH1 and EXCH2 (but needs more testing)
1375      - writing works for all verification test cases w/ g77 on Linux
1376    
1377    checkpoint57r_post
1378    o make MNC variable initialization happen earlier
1379    o add diagnostics for (almost) each term of the momentum Eq.
1380    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1381    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1382    o remove MINIMAL_TAVE_OUTPUT option ;
1383      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1384    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1385      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1386    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1387    o add time-dependent SST, SSS control
1388    o cost terms in ecco/ modularized (new cost_generic.F)
1389    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1390    o new infrastructure for seaice model vs. obs misfits in seaice/
1391      * driver from the_main_loop.F is seaice_cost_driver.F
1392      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1393      * gradient check in Exp. 6a of natl_box_adjoint/
1394    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1395      (see README file)
1396    
1397    checkpoint57q_post
1398    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1399    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1400      - bug was reported by Jean-Michel and Ian Fenty
1401    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1402      update exp. cpl_aim+ocn output.
1403    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1404      Needed for high-res. runs with large global files
1405      to be able to limit tapelev size
1406    o Changed some tests for adjoint:
1407      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1408      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1409      * global_ocean.90x40x15/ back to default 3-level checkpointing
1410    o Modifications to enable scripted COMMON to MODULE conversion
1411      * verification/OpenAD/code/ has necessary scripts and description;
1412      * converts, compiles and runs successfully;
1413    
1414    checkpoint57p_post
1415    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1416    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1417      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1418    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1419    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1420      (was already the case for dissipation with mom_vecinv,
1421       and also the case for grad.PhiHyd when staggered-timeStep)
1422      This will allow to put dissipation out-off the AB time-stepping.
1423     Unfortunately, affects truncation error. Update output of exp. that "fails"
1424      (cg2d matching number) and leave the others for later: front_relax(10),
1425      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1426      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1427    
1428    checkpoint57o_post
1429    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1430      (2) its ready to be documented during the 20050801 DocFest
1431    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1432      for ideal_2D_oce and lab_sea on linux_ia32_g77
1433    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1434      in global1x1_tot/code_seaice_adj to access indices 32, 33
1435      (worth another tag)
1436    
1437    checkpoint57n_post
1438    o adding precip control xx_precip 32
1439    o adding swflux control xx_swflux 33
1440    o Replacing 10 forcing penalty cost routines by 1 generic.
1441    o Implementing partitioning in time-mean and variable adjustment
1442      for atmos. state.
1443    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1444  o in natl_box_adjoint:  o in natl_box_adjoint:
1445    * updated: results_bulk/    * updated exp 1 to 10
1446    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1447    o updated global1x1/*_seaice_adj/
1448      to incorporate latest changes
1449    o enable useSingleCpuIO for mdsio vector routines
1450      (applies in particular to tapelev I/O)
1451    o removed inefficient K-loop in all active_file*control*.F
1452    
1453  checkpoint57m_post  checkpoint57m_post
1454  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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