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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.961 by mlosch, Mon Feb 25 20:59:01 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 add a flag writePickupAtEnd (default=true) to be able to suppress
8  o moved ptracer ctrl index 17 -> 32    writing a pickup at the last timestep
9    o pkg/profiles:
10      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
11      (for "less than 32 characters name" compiler requirement)
12    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
13      conditions that have a different sampling frequency than S/T/U/V obcs
14    o pkg/diagnostics (stats-diags):
15      - fix global Min/Max in case 1 processor get only empty tiles
16    o genmake2: replace (4 times)
17         make genmake_tc_1.o >> genmake_warnings 2>&1
18      with
19         COMM="$CC $CFLAGS -c genmake_tc_1.c"
20         echo $COMM >> genmake_warnings
21         $COMM >> genmake_warnings 2>&1
22      to make genmake2 always see the value of CC as specified in the optfile.
23    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
24      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
25      - modify verification advect_cs test to test SOM-advection on CS-grid.
26    o pkg/ctrl:
27      - Rewrite of ctrl_map_ini_ecco.F,
28        introducing a generic routine (ctrl_map_ini_gen.F).
29      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
30    
31    checkpoint59n
32    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
33      number in dedicate array "hdiag":
34      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
35        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
36      - many small changes (integer format) for large number of diagnostics
37      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
38        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
39    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
40      usingSphericalGrid, this allows to define the rotated grid coordinates
41      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
42      geographical coordinates according to the inverse of the rotation defined
43      by the Euler angles, so that Coriolis parameter and online-interpolation by
44      exf works with the geographical coordinates on XC/YC/XG/YG.
45      Naturally, this feature does not work with all packages, so some
46      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
47      profiles), because there the coordinates are assumed to be regular
48      spherical grid coordinates.
49    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
50      - introduce isopycnal diffusion coefficient control.
51    o tools/adjoint_options:
52      - additional control vector components.
53    o pkg/mnc: have mnc create marginally meaning full coordinate variables
54      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
55    o pkg/mypackage:
56      - add example of read/write pickup for state-var ;
57      - add entry points to the main code for state-vars diags & write-pickup.
58    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
59      transitions for useExfYearlyFields
60      - add new subroutine that determines the file to read from for
61        use*YearlyFields = .TRUE. and .FALSE.
62      - add a verification experiment to global_with_exf that tests
63        useExfYearlyFields with USE_EXF_INTERPOLATION defined
64    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
65      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
66      subroutines (which could be generated from a template, because they are
67      almost identical), for now they are included in obcs_prescribe_read.F for
68      simplicity
69    o pkg/exf:
70      - add a little more diagnostic to exf_interp_read (in analogy to
71        mds_read_field, can be turned off with debugLevel < debugLevA=1)
72      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
73        ugly but fast by unrolling short inner loops, inserting a unroll=8
74        directive in routine lagran, and splitting a loop and making do while the
75        outermost loop (the latter requires the intoduction of index arrays)
76    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
77    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
78      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
79    o verification/seaice_obcs: updated for restart test and latest options
80    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
81      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
82      for now this is only available for the C-grid code and also within
83      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
84    
85    checkpoint59m
86    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
87      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
88    o gad_som : fix flux output (& diagnostics) to have same units as other  
89      advection scheme fluxes (was previously multiplied by deltaT).  
90    o added verification/seaice_obcs both to test seaice open boundaries
91      and to provide an example matlab scrpt for generating them
92    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
93    o pkg/salt_plume: clean up salt_plume_frac.F to
94      remove redundancy in PlumeMethod 1 and 4
95    o pkg/kpp: added saltplume diagnostics
96    o pkg/obcs and pkg/seaice:
97      - do not set uice and vice to zero when OB*icefile are unspecified
98      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
99      - moved seaice tracer obcs after call to seaice_growth
100    o pkg/salt_plume: added various options for salt plume depth
101      criterion and for vertical distribution of the salt
102    
103    checkpoint59l
104    o pkg/ptracers: new version of ptracers pickup:
105      read meta file and write only fields which are needed to restart.
106      ( same logic as main pickup file ; also using pickupStrictlyMatch )
107    o pkg/seaice:
108      - add timescale for melting due to warm mixed layer as a means of
109        setting SEAICE_availHeatFrac more conveniently
110      - add a CPP-flag/runtime parameter check for flooding algorithm
111      - reformulated availHeat in seaice_growth.F to be independent of AREA
112    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
113      unit changes
114    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
115    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
116      SX vector computer.
117    o pkg/seaice:
118      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
119        seaice forcing fields can now be read only through pkg/exf
120      - removed some unused halos
121    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
122    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
123      or U/VICE from U/VWIND before computing U/VSTRESS
124    
125    checkpoint59k
126    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
127      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
128    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
129      all experiments pass when compile with un-initialised var. checking option.
130    o added pkg/salt_plume
131    o script to test restart (for now, in MITgcm_contrib/jmc_script)
132    o pkg/seaice: new read/write pickup version.
133      read meta file and write only fields which are needed to restart.
134      ( same logic as main pickup file ; also using pickupStrictlyMatch )
135    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
136    o lab_sea.hb87: modify the domain & update output.hb87.txt :
137      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
138      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
139      process. Fixed here by closing the domain at the Northern boundary.
140    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
141    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
142      a set of consecutive levels in/from a 3-D array.
143    o pkg/ptracers:
144      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
145      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
146    
147    checkpoint59j
148    o in pkgs: dic, obcs, offline, rbcs:
149      standard way to compute coeff. for time interpolation between 2 time reccords
150      which retains full precision (& make results less dependent on compiler).
151      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
152    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
153      packages instead of reading ice cover and wind speed separately
154    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
155     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
156      to allow to compile customized code before the update)
157    o cleaning-up:
158      - fix CPP instruction syntax in pkg/obcs
159      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
160        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
161      - fix some threads issue in IO parts.
162    o pkg/dic:
163      - add tons of "_d 0" (--> much better testreports !)
164       and then update outputs of tutorial_global_oce_biogeo
165    o pkg/mom_fluxform:
166      add a special version of momentum advection intended to conserve momentum
167      next to a bathymetry step or a coastline edge. (default = off = #undef)
168    o new read/write pickup version:
169      - for now, only implemented for main (mdsio) pickup file.
170      - write out only what is needed to restart; merge pickup_nh , pickup_ph
171        and main pickup together.
172      - read meta file; read only what is needed to restart; stop if a field
173        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
174        if it make sense (even if the restart is not perfect).
175      - if no meta file, assume that pickup to read corresponds exactly to
176        a pickup that would currently be written.
177      - read pickup written in the old format (until checkpoint59i) if it
178        recognizes an old meta file (no field-list).
179      - add a meta file in exp. which starts from a pickup: 2 cases:
180        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
181         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
182        b) a meta file describing the content of the associated pickup file
183         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
184    o pkg/mdsio & pkg/rw:
185      - new routine to read a meta file ; new set of routine to read
186        Multiple-fields file (with meta file).
187    o added open boundary conditions capability for seaice
188        HSNOW, HSALT, UICE, and VICE
189    
190    checkpoint59i
191    o adjoint:
192      * fix multiDimAdvection adjoint
193        (partial recomputation problem by TAF for fVerT(:,:,kDown)
194        and comlev1 size definition (maxpass vs. max. number of tracers)
195      * verification/global_ocean.90x45x15 adjoint now tests
196        NLFS and multiDimAdvection using DST3 (=30)
197      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
198    o pkg/kpp: add "_d 0" to real constant (if missing);
199      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
200      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
201    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
202      for internal parameters related to restart process (formerly from PARAMS.h)
203      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
204    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
205      as argument. (only atm2d & obcs write_pickup have not yet been updated)
206    o pkg/monitor:
207      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
208      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
209      - account for deep Atmosphere factor and density factor (anelastic)
210    o added open boundary conditions capability for seaice HEFF and AREA
211    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
212      thermodynamics
213      - requires a little reorganization, which affects the testreport results
214        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
215        so that now the conservative form is tested
216      - add a few comments
217    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
218    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
219    o add new diagnostics to seaice: advective, diffusive fluxes (only for
220      multidim-advection, for scheme 2 they are not filled) and transports,
221      thermodynamic growth rates
222    o change units of EmPmR (inside the code, + within coupling interface)
223      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
224      Affects results @ truncation level (cg2d match) and update output of
225       experiments: lab_sea(6), global_ocean.90x40x15(10),
226      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
227      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
228      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
229      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
230    
231    checkpoint59h
232    o pkg/exf:
233      - improve vectorization by moving if-statement out of loops in
234        exf_mapfields, exf_radiation
235      - exf_bulkformulae.F: introduce 2D fields and vectorize code
236    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
237    o testreport:
238      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
239        monitor & update offline_exf_seaice exp. output.
240      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
241    o pkg/seaice:
242      - bug fix in the evp solver: boundary conditions were affected be
243        masking of zMax/zMin (changes results)
244      - minor bug fix in boundary conditions in seaice_calc_strainrates
245        (changes results for no_slip)
246      - seaice_lsr.F: make interpolation of eta dependent on boundaries
247      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
248      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
249        stress formulation and no-slip boundary conditions
250    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
251      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
252    o pkg/seaice: a first HSALT time stepping equation has been checked in
253    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
254      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
255      without requiring DO-IF statements
256    o pkg/thsice:
257      use continuous power-law function for partition of energy between lateral
258      melting/freezing and thinning/thickening ; old code using step function
259      still available with #undef THSICE_FRACEN_POWERLAW
260      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
261    o testreport: change AD testing : check against results/output_adm.txt
262      using same scripts as for forward test.
263    
264    checkpoint59g
265    o adjoint testing: in preparation for changing testreport:
266      - output format: cost and grad written on separated lines
267      - ad output results in directory "results" (instead of "results_ad")
268    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
269    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
270    o pkg/ecco: allow user defined cost function contributions
271    o testreport:
272      Allow to choose (per experiment) the list of tested output variables
273       and the main variable (used to issue a pass/FAIL ) ;
274      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
275      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
276      Also modify printing of summary:
277       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
278       b) echo the list of tested variables in the individual summary.txt of
279          each experiment.
280    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
281      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
282      (but still depend on the tile decompostion of the domain).
283    o pkg/seaice: change a discretization detail to make the B-grid code
284      "more symmetric". This change is likely to remove all "ridges/leads" that
285      where quasi-aligned with the grid in B-grid solutions. It may also be
286      the solution to the stress coupling issues with the B-grid.
287    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
288      remove .cvsignore from input dir. (since testreport no longer run here).
289    o pkg/thsice:
290     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
291     - fix reshaping of sea-ice just after advection:
292       melt all the ice only if ice-volume is too small.
293     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
294       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
295     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
296    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
297      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
298    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
299      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
300      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
301      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
302      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
303      -> update output.txt
304    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
305     this affects truncation error: -> update output.txt of exp:
306      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
307      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
308    
309    checkpoint59f
310    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
311    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
312      a bounded range (in forward mode)
313    o pkg/ecco, ctrl, autodiff and mom_common:
314     internal parameter controls, completements of implementations
315    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
316    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
317      (not seem any difference in testing results).
318    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
319       at face corners.
320    o pkg/generic_advdiff:
321     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
322      loop range indices for computing vertical advection tendency
323      and do the calculation in the interior only (no overlap) ;
324      for now, only implemented for SOM advection (to save CPU time).
325     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
326    o exch2 adjoint
327      First set of changes:
328      - add exch2 hand-written adjoint templates
329      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
330        This will require cleanup in pkg/autodiff/*.F
331        (changed routines currently kept separate in verif. code/)
332      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
333        that used to hide exch2 or cubed-sphere specific code
334        (commented via 'cph-exch2')
335    o pkg/seaice
336      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
337    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
338       output of global_ocean.cs32x15.thsice .
339    
340    checkpoint59e
341    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
342      for B-grid vector (not yet tested) and C-grid vector (<- only used
343      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
344    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
345      (#ifdef ALLOW_SALT_PLUME)
346    o gather_2d/scatter_2d: removed halo regions
347    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
348      scheme and the corresponding test case (under front_relax dir). For now,
349      only available with Skew-flux form and not yet tested in realistic set-up.
350      adjoint: store directives updated, but gradient checks deteriorated,
351      so maybe GM/Redi adjoint is now broken.
352    o seaice adjoint
353      * add AREA, HEFF, HSNOW as control variable
354        (should not change lab_sea results)
355      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
356    o pkg/seaice:
357      * added computation of saltFlux in seaice_growth;
358        For time being, sea ice salinity is assumed constant
359        contribution of snow flooding to freshening of sea ice is neglected.
360        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
361        defaults to 0.0 in order to maintain backward compatibility.
362        Typical values for SEAICE_salinity are 4 to 10 g/kg.
363      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
364      * added SEAICE_availHeatFrac, which specifies fraction of surface level
365        heat content used to melt or grow ice
366      * commented out cap of HICE: it helps keep ice thinner
367      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
368      * applied OBCS T/S mask to HEFFM sea ice mask
369    
370    checkpoint59d
371    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
372     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
373     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
374    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
375     and change default value of parameter "GM_Small_Number";
376     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
377       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
378       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
379    o pkg/ecco: cost function when applying pkg/smooth to controls
380    o pkg/ctrl: add forcingPrecond run time parameter
381    o pkg/seaice:
382     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
383     - fix bug in metric terms of u-equation in LSR solver (implicit part),
384       changes verification/lab_sea
385     - rearrange implicit part of u-equation in LSR solver to make it easier to
386       read, understand, and debug. This causes changes at the truncation level.
387     - fix (serious) bug in the boundary conditions (sign error in the implicit
388       part) of the LSR solver. Changes all LSR results.
389     - fixed problem with HSNOW initialization to avoid thick snow when AREA
390       is initilized with small values - does not change lab_sea results.
391     - added HsnowFile initialization capability
392    o pkg/smooth: addition to model/src and pkg/ctrl so allow
393     initialization of pkg/smooth and application to control vector
394    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
395    o dependencies: pkg/profiles requires pkg/cal
396    o pkg/profiles:
397     - added option ALLOW_PROFILES_GENERICGRID
398         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
399         that interpolation information (grid points and coefficients) is provided
400         within the netcdf input files.
401         -> sample matlab scripts can be found in MITgcm_contrib/gael
402         that allow you to prepare netcdf input files.
403     - also modified: cleaner include statements, cleaner error print statements,
404       cleaner stops when error, and more tests of the netcdf input files consistency.
405    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
406    o pkg/seaice:
407     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
408       requires a new routine: seaice_diagnostics_fill.F
409     - make sure that seaice does not move if not forced (pressure replacement
410       method, Hibler and Ip, 1995), changes results
411     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
412     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
413       It is turned off by default (=-1.), because it changes the results.
414     - make it possible to read AREA from a file, too.
415    
416    checkpoint59c
417    o add S/R and diagnostics for oceanic mixed-layer depth
418    o move GMRedi call after all vertical mixing schemes (including KPP)
419    o pkg/thsice:
420     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
421      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
422    o pkg/obcs:
423     - bug fix for balance code
424    o pkg/seaice:
425      - allow values of SEAICE_elasticParm > 1
426      - add new parameter SEAICE_evpTauRelax as an alternative
427        to SEAICE_elasticParm
428      - make lsr boundary conditions free slip (by default), changes result
429      - add code for no slip boundary conditions for lsr
430      - set minimum of zeta to zero (and not 4e8) (changes results)
431      - add a cap on AREA after advecting AREA if seaice_growth is not called
432    o change calculation of Visbeck K:
433      - no longer depend on tapering scheme; instead, compute slope (limited
434        by GM_maxSlope). this is equivalent to what was comuted before with
435        clipping or linear tappering.
436      - fix vertical averaging (wrong by 1/2 level)
437      - leave the old version (but will not be maintained) within
438        #ifdef OLD_VISBECK_CALC / #endif
439      - update output of exp. ideal_2D_oce
440    o change error catch in calc_r_star to improve vectorization
441    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
442      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
443    o adjoint:
444      Re-organized adjoint checkpointing according to Matt Mazloff
445      (but with modifs/completions/cleanups)
446      Storing is now bundled into large arrays to optimized I/O
447      (and second step in cleanup of the_main_loop)
448    
449    checkpoint59b
450    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
451      - export/import (between ocean & coupler) fields needed for ocean DIC.
452    o pkg/seaice:
453      - get rid of three more exchanges seaice_calc_viscosities (required
454        different loop boundaries in seaice_lsr and seaice_ocean_stress)
455      - bug fix in seaice_ocean_stress (update of lab_sea required)
456      - reduce loop boundaries to necessary minimum also in seaice_evp
457      - go back to the old way of computing deltaC/Z as the adjoint likes that
458        better
459    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
460      passive tracer to an Age Tracer) + update output.txt
461    o pkg/exf:
462      - implement A-grid / C-grid selection for wind-stress input files.
463      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
464      for now, in exf_bulk_largeyeager04.F only :
465      - change implementation for case where windspeed + 2. components wind-stress
466        are read-in. AND use rhoConstFresh to convert evap.
467    o pkg/seaice:
468      - use correct EXCH_UV for wind-forcing (on A-grid).
469      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
470        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
471    o pkg/exf:
472      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
473      EXF_INTERPOLATION:
474      - merge global_with_exf/code version of exf_interp_read.F
475        to the main code ;
476      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
477        reading the file ; Important: This options needs to be defined to recover
478        previous code.
479        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
480      - no longer loose real*8 precision along the way when using exf_iprec=64.
481    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
482      - change discretisation of evp-solver in order to avoid another exchange
483        (changes lab_sea) and clean up a little
484      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
485        help the adjoint (this also changes the results slightly)
486      - add a few "_d 0" where they had been missing in seaice_evp.F
487      - cleaning up: remove unused seaice_calc_rhs.F
488    o pkg/exf: some cleaning-up:
489      - change various "constants" into runtime parameters
490      - cleaned-up Large&Yeager04 routine which should eventually
491        replace exf_bulkformulae.F (changed names of S/R and CPP)
492        and merged various ALLOW_ATM_WIND options
493     only used with thsice pkg (in thsice_get_exf.F):
494      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
495        which are used when useStabilityFct_overIce=TRUE (= the default)
496      - change default values of ice & snow emissivity and scale downward LW
497        by ice & snow emissivity.
498    o pkg/thsice:
499     fix few little problems, in thsice_calc_thickn.F:
500      - growth vertically (and not laterally) if iceFrac == iceMaskMax
501      - melt only laterally if hIce < hThinIce (as the comments say)
502      and in thsice_extend.F:
503      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
504      - start to form ice as soon as the minimum ice-volume is reachable.
505     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
506      and cpl_aim+ocn
507    o pkg/kpp
508     - move computation of surface related input fields to KPP into a new
509       subroutine kpp_forcing_surf.F
510     - remove wrong (within bi,bj loops) EXCH calls.
511     - little cleaning (add argument myThid in last position, cvs header ...)
512     - for now, fix conservation problem by exchanging KPPviscAz (may not
513       be the best fix)
514    o pkg/seaice
515     - check for inconsistent evp parameter/cpp-flag combination
516     - remove leftover errIO flat for obsolete name list error handling
517    o OpenAD
518     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
519    
520    checkpoint59a
521    o pkg/seaice: some parameter clarifications and a little bit of clean up
522    o pkg/thsice: rename run-time parameters:
523       himin       -> hIceMin
524       himin0      -> hThinIce
525       hihig       -> hThickIce
526       i0          -> i0swFrac
527       transCoef   -> bMeltCoef
528       frac_energy -> fracMelting
529      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
530       with default values (for now) that do not change the results.
531      remove old version of thsice vars advection in pkg/seaice.
532    o in FFIELDS.h:
533      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
534      - make pLoad & sIceLoad always available (but still only used if
535         ATMOSPHERIC_LOADING is #define).
536    o pkg/kpp: replaced _KPP_RL with _RL
537    o bug fixes for vertical diffusivity computations when both KPP and
538        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
539        are no longer updating the vertical diffusivity array
540        (passed as argument) but are (re-) setting those arrays.
541    o pkg/seaice: fix bug in evp solver, while doing that
542      - change (improve?) discretization of stress computations for both
543        cgrid-lsr and evp solver
544      - add a new routine to compute strain rates
545      - the above changes lab_sea results
546      - add no slip conditions for evp solver (off by default), lsr-version
547        may follow
548      - fix exchange for shear at Z-points (does not change lab_sea)
549      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
550        (to force the user to pick a time step since there is not "safe" way
551        of choosing it)
552      - add principal stress diagnostics
553      - rearrange fields for evp a little to avoid having to call a: too many
554        exchanges and b: exchanges for stress trensor components which we do
555        not have.
556      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
557        of evp, complete rewrite for lsr case (latter is does not yet work
558        in all cases)
559    o pkg/kpp: add code to have mixing in shelf ice caverns
560      - add myThid to all kpp routines (long overdue)
561    
562    checkpoint59
563    o pkg/exf:
564      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
565        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
566      - move exf header files from lower_case.h to UPPER_CASE.h ;
567        add missing cvs Header & Name
568      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
569      - add namelist param. selectStressGridPosition, exf_monFreq
570      - retire many _CLIM routines, and remove data.exf_clim
571        + params moved to data.exf
572        + climsst, climsss now handled by exf_set_gen, i.e.
573          climss?period=0 refers to constant field,
574          climss?period=-12 to monthly forcing
575      - split up namelists in data.exf
576    o pkg/seaice:
577      - remove seaice_exch and seaice_exch_uv
578      - remove superfluous exchange of theta
579      - add myThid to seaice_budget_ocean/ice
580      - add new interface for atmospheric wind forcing (C-grid only)
581        + new routine
582        + two new field (taux, tauy for stress over ice)
583        + removed one global field (DAIRN) for C-grid case only
584    o pkg/thsise
585      - 2nd set of modifs for thsice adjoint in conjunction with exf
586    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
587    
588    checkpoint58y_post
589    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
590      vertical diffusivity, similar to that in MOM4; turned on using
591      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
592      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
593    o Added capability for 3D specification of background vertical diffusion
594      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
595      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
596      "data" file that contains the 3D vertical diffusivity coefficients.
597    o ice dynamics (pkg/seaice) with thsice thermodynamics:
598      - add code within pkg thsice to advect & diffuse sea-ice fields
599      similar to (and will replace) what has been added in  seaice_advdiff.F,
600      but: - conserving Mass, Heat & Salt.
601           - better when using non-linear advection scheme (not yet fully tested)
602           - can also be used in atmospheric set-up (for now, only the diffusion).
603    
604    checkpoint58x_post
605    o IO option for global-file compact format:
606      - add options when generating topology (utils/exch2/matlab-topology-generator)
607      - add I/O capability (pkg/mdsio).
608      - adapt utils/matlab/rdmds.m to read this format.
609      for now long-line format not yet supported by pkg/mdsio (& exch2).
610    o shelfice: add a few diagnostics
611    
612    checkpoint58w_post
613    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
614      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
615      (and replace horiVertRatio in NH code).
616      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
617                         and tutorial_plume_on_slope (sensitive to truncation)
618    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
619      directly to drive seaice model (C-grid only)
620    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
621     - reintroduce computation of wind from stress,
622     - compute tau (in exf_bulkformulae.F) from windstress averaged to
623       mass points to avoid tau = 0
624     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
625    o rdmnc.m: make it work with "global" files created with gluemnc
626    o rdmnc.m : some improvements in dealing with singleton dimension
627      (tested on all testreport mnc output files).
628    o genmake2: disable pkg/profiles if netcdf test fails.
629    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
630    o move call to cal_readparms up to make calendar parameters/variable available
631      to all packages
632    
633    checkpoint58v_post
634    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
635      useDynP_inEos_Zc tested.
636    o pkg/exf: changes to properly interpolate/mask/scale initial fields
637    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
638      and portions thereof.  See read_cs.txt for description and examples.
639    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
640      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
641      following the great-circle arc between those 2 points.
642    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
643      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
644    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
645     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
646     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
647     - still needs work (not working with some options ; efficiency to improve)
648       and serious testing.
649     - use this scheme for temperature & salinity in 2 advection test exp.:
650       advect_xy & advect_xz, respectively.
651    
652    checkpoint58u_post
653    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
654    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
655    o testreport: add option "-skipdir" to skip some test.
656    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
657      momentum calculation.
658    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
659    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
660      remove checkpoint.F and the_correction_step.F (no longer used);
661      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
662    o add option (linFSConserveTr) to correct for tracer source/sink due to
663      Linear Free surface
664    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
665    o pkg/thsice: fix reading mnc-pickups
666    
667    checkpoint58t_post
668    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
669    o pkg/mdsio:
670     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
671       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
672       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
673     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
674     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
675       either MDS_READ_FIELD or MDS_WRITE_FIELD )
676     - new S/R (to replace MDSWRITEMETA), which allows to write more
677       informations (variable names, time ...) to meta files.
678     - modify rdmds.m to give back the meta file content.
679    o pkg/diagnostics: change vertical interpolation to be safer, and more
680       flexible (define p-levels to interpolate to in data.diagnostics);
681      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
682       diagnostic pointer.
683    o pkg/seaice: more cleaning up of seaice_growth, added many comments
684    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
685    o fix multi-category seaice:
686     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
687       SEAICE_MULTICATEGORY
688     - fix short wave heat flux
689    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
690       and allow to use EVP solver. Change forward lab_sea: test both EVP
691       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
692    o Initial check-in of lab_sea adjoint
693      (very similar to natl_box_adjoint/code_seaice)
694      * used C-grid and EVP solver
695      * used KPP, GM/Redi
696      * uses inAdExact=.TRUE.
697      * gradient checks fail for both ADM and TLM
698        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
699        f.d. gradients actually seem more problematic than ADM, TLM gradients;
700        issue is related to forward mismatch between g77 an ifort
701    o pkg/seaice: overhaul of thermodynamics
702     - growth.F and groatb.F are replaced by new routine seaice_growth.F
703     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
704     - move a few global fields out of SEAICE.h into seaice_growth.F and
705       make them 2D (FICE/QNETO/ ...)
706     - remove FO (it is the same as QNETO)
707     - introduce a few local fields to avoid modifying external fields such
708       as atemp, etc.
709    
710    checkpoint58s_post
711    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
712      changed exf_set_gen.F so that
713        genperiod=0 means input file is one time-constant field and
714        genperiod=-12 means input file contains 12 monthly means
715    o CG2D: use pre-computed solver main-diagonal (stored in common block);
716      this affects truncation error ; generate new output file for exp. which
717      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
718        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
719        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
720        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
721        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
722        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
723    o start implementation of deep-atmosphere and anelastic formulation
724    o verification: remove 2nd copy of input files and use script "prepare_run"
725      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
726    o mom_common/vecinv/fluxform: fix a few initialisation isssues
727    o profiles: fix for multithreaded case
728    
729    o diagnostics: rename few diags:
730      s/'PRESSURE'/'RCENTER '/g
731      s/'TICE    '/'oceFreez'/g
732      s/'TAUX    '/'oceTAUX '/g
733      s/'TAUY    '/'oceTAUY '/g
734      s/'SWFLUX  '/'oceQsw  '/g
735      s/DIFx/DFxE/g
736      s/DIFy/DFyE/g
737      and add few ocean-forcing diagnostics:
738      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
739    o modifications to pkg/seaice/growth.F and budget.F, which change results of
740      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
741      as actual snow thickness.  It now refers everywhere to effective snow
742      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
743    
744    checkpoint58r_post
745    o modifications to pkg/seaice/growth.F, which change results of
746      lab_sea experiment: fixes pertain to melting snow over open water, to
747      masking EVAP under sea ice, and to using the correct AREA variable for
748      computations of EVAP, PRECIP, HSNOW, and GHEFF
749    o add ability to read bathy, salt, and theta using MNC (off by def)
750    o add flooding algorithm and advection of HSNOW for pkg/seaice;
751      both are turned off by default and do no change any results
752    o seaice advection with pkg/thsice: a step toward the use of non-linear
753      advection scheme, but #ifdef or commented out for now (requires more EXCH).
754    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
755      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
756      in natl_box (affects results @ truncation level: update output.txt)
757    o multi-threading and IO:
758      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
759      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
760        (needed to work with SingleCpuIO): tested in all verif. exp.
761    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
762      affects the results (but none of the verification test uses this scheme).
763    o Adding some pkg/diagnostics capability to pkg/seaice
764      (will certainly be subject to changes)
765    o ctrl: adding new control variables:
766      lwflux, lwdown, evap, snowprecip, apressure, runoff
767    
768    checkpoint58q_post
769    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
770      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
771      high_res_cube configuration by 4% on Columbia.
772    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
773      add (in global_with_exf/code) a version of EXF_INTERP_READ without
774      dynamical allocation (seems to work in multi-threaded).
775    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
776      single CPU io) so that TAF does not have to see EESUPPORT.h
777    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
778    
779    checkpoint58p_post
780    o obcs: stop if obcs is used with useCDscheme = .true.
781    o shelfice:
782     - fix a sign error so that no slip at shelfice interface works
783     - remove stop for combination non-hydrostatic code and shelfice. That does
784       not mean, that the results are correct, but at least they are numerically
785       stable
786    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
787    o added adjoint exch routined for all exch*3d* routines
788      and updated flow directives
789    
790    checkpoint58o_post
791    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
792      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
793    o change controling S/R for writing pickup file (new S/R do_write_pickup)
794      and clean-up reading/writing of pickup files.
795    o fix local version of read/write pickup (NH part) in rotating_tank/code
796    o simplify EXCH interface:
797     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
798     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
799    o added the regrid package
800    o shelfice:
801     - add a simple boundary layer scheme to reduce noise
802     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
803    
804    checkpoint58n_post
805    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
806       local variable (not in common block).
807    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
808      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
809      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
810        to work with SingleCpuIO.
811    o add "_d 0" to real constant of pkg/cfc subroutines ;
812       update exp. cfc_exemple & tutorial_cfc_offline output files.
813    o multi-threading and IO:
814      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
815        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
816      - barrier before and after reading.
817      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
818      - avoid using MDS_WRITELOCAL for LAND pkg output.
819      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
820        common-block variables ; Allows multi-threading with master-thread IO.
821    o change default MAX_NO_THREADS from 32 to 4 ;
822      and stop cleanly when MAX_NO_THREADS is too small.
823    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
824    
825    checkpoint58m_post
826    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
827       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
828    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
829       keep global_ocean.90x40x15 (for AD testing) with former secondary test
830       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
831    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
832        add MITgcm_tutorials (= code + all the tutorials)
833    o ecco, option to compute cost for total ssh (mean+anom)
834    o consistent with addition of ptracer and ssh in pkg/profiles
835    o profiles: adding ptracer and ssh
836    o testreport: change multi-test output-file name
837      (from output.txt.{name} to output.{name}.txt)
838    o profiles: now ok for mutli-tiles case
839    o seaice: add 4 parameters for different advection schemes for area,
840      (effective) seaice thickness, enthalphy, and snow height. Their default
841      is the standard parameter SEAICEadvScheme
842    o calc_gw:
843     - add cosFacU in zonal viscous flux (harmonic.visc.).
844     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
845       of tutorial_plume_on_slope.
846    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
847    o calc_gw: true flux-form, account for horizontal grid spacing.
848      update rotating_tank results, but not plume_on_slope (affected at
849      truncation level, 11 digits).
850    
851    checkpoint58l_post
852    o calc_gw:
853     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
854     - remove side-drag for now (need to fix it); update plume_on_slope results.
855     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
856    o commit code to make SST/SSS weights spatially variable
857      (based on either variable in-situ or variable initial T/S weights)
858    o pkg/ecco:
859      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
860        now based on horizontally varying weights wthetaLev, wsaltLev
861      * cost_averagesflags now returns year indices in addition to day, month
862      * sflux balance is performed on annual basis
863        (sflxumm, sfluxmm2, bal_sfluxmm)
864      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
865        including separate counting and multipliers
866    o pkg/rbcs
867      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
868    
869    checkpoint58k_post
870    o testreport:
871     - always build in dir. "build" (if not there, mkdir build instead of building
872       & running in input)
873     - run in dir run (if it exists), in build otherwise.
874     - call prepare_run (if input/prepare_run exists)
875     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
876    o pkg/exf modifications to interpolation and rotation routines for more
877       reasonable treatment of North Pole singularity: for tracers North Pole
878       value is set to northernmost zonal-mean value, for zonal velocity it is
879       set to zero, and for meridional velocity it is set to northernmost value.
880    o pkg/exf/exf_check_range.F
881     - add tile index to diagnostics and move stop statement to the very
882       end of the routine.
883    o pkg/diagnostics: (diagnostics_main_init.F)
884      define title of isomorphic variables according to the current config.
885    o pkg/thsice with pkg/seaice dynamics:
886    - fix domain of computation (interior only, required for exf) and do exchanges
887    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
888    o towards a standard way of dealing with multi-threading in MONITOR
889      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
890    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
891       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
892    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
893    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
894    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
895       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
896    o tracer advection:
897     - clean-up and simplify calc_common_factors.F
898     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
899       advection subroutine (but still not used within DST advection S/R)
900    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
901    
902    checkpoint58j_post
903    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
904      from file (collects calls previously in FORWARD_STEP)
905    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
906    o adjoint store dir. adjusted accordingly
907    o genmake2
908      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
909    
910    checkpoint58i_post
911    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
912      on wind stress (SEAICEstressFactor defaults to 1.)
913    o Total number of Timers is finite (<=40): comment out 2 non-essential one
914      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
915    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
916      on CS-grid: no longer loosing mass.
917    o exf & curvilinear-grid: no longer modify longitude xC & xG.
918    o pkg/ggl90: fix sloppy output and fix a bug
919    o pkg/seaice: added SEAICEuseEVPpickup parameter
920      - Set to false in order to start EVP solver with
921        non-EVP pickup files when using SEAICEuseEVP
922      - fix sign error in diffusion in seaice_calc_rhs
923    
924    checkpoint58h_post
925    * Modifications for bottom topography control
926      o replace hFacC by _hFacC at various places
927      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
928      o add non-self-adjoint cg2d_nsa
929      o update autodiff support routines
930      o re-initialise hfac after ctrl_depth_ini
931      o works for 5x5 box, doesnt work for global_ocean.90x40x15
932    * Adding verification for 5x5 box (4-layer) bottom topography control
933    
934    checkpoint58g_post
935    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
936       used for mean seasonal cycle, mean diurnal cycle); add an example
937       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
938    o pkg/ggl90:
939      - add parameter (minimum surface kinetic energy)
940      - fix bug (avoiding division by zero)
941    o couple pkg/thsice to pkg/seaice:
942      - modify advection in seaice to accomodate new scalar fields to be advected
943      - only muliDimAdection scheme work with seaice/thsice
944      - mapping of thsice-variables to seaice-variables, back and forth
945      - does not break the verification experiments, but does not give the
946        desired results either
947    o pkg/seaice
948      - make (default) second order advection a bit less confusing?
949    
950    checkpoint58f_post
951    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
952      to pkg/seaice):
953      - new routines thsice_map_exf and thsice_get_exf provide the interface
954      - add an additional formal parameter to thsice_solve4temp
955    o pkg/exf:
956      - add new fields wspeed, snowprecip (to be able to couple to thsice)
957      - correct Stefan-Boltzmann constant
958      - new parameter for longwave surface emittance
959      - separate some stuff from exf_bulkformulae into new routines  
960        exf_radiation, exf_wind
961      - add new parameters and constants: longwave emissivity for ocean, ice
962        and snow, evaporation parameters over ice
963      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
964        either wind from stress or stress from wind
965    o pkg/thSIce:
966    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
967    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
968       and THSICE_CALC_THICKN
969    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
970    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
971      to make debugging easier.
972    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
973    o pkg/bulk_force:
974      - clean-up comments and parameters ;
975      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
976    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
977      generate new output for test-experiment: aim.5l_cs.thSI
978    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
979      testreport accordingly
980    
981    checkpoint58e_post
982    o SEAICE_CGRID adjoint done
983    o R_STAR adjoint implemented.
984      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
985      * need to sort out init. of h0facc, etc.
986    o Make pkg/profile fully independent of ecco,cost, etc. stuff
987      to be able to use it in pure forward.
988    
989    checkpoint58d_post
990    o upgrade simple test-experiment to tutorial example:
991     step.1: duplicate the experiment and (step.2) will remove the old copy.
992      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
993      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
994      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
995      tutorial_global_oce_biogeo    <- copy of dic_example
996      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
997      tutorial_plume_on_slope       <- copy of plume_on_slope
998      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
999      tutorial_global_oce_optim     <- empty for now (David ?)
1000      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1001     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1002    o correct a sign problem in cost_scat.F
1003    o obcs and ptracers: fix boundary conditions for advections schemes
1004      with larger stencil
1005    o thsice adjoint: start
1006    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1007      completeness
1008    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1009      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1010    o ptracers adjoint:
1011      * avoid extensive recomputatations
1012      * fix missing re-init. of gptr (missed by TAF)
1013    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1014      me to turn off the excessive output to STDOUT that this package produces
1015    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1016      and add those terms in Vector-Invariant formulation.
1017    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1018      if the control period (xx_hfluxperiod etc) is 0
1019    o in profiles pkg, clean routines and fix details
1020    o in ecco pkg, reading ssh data:
1021      fix problem in case the model does not start at iter0=0
1022    o fix mnc-pickup/restart for ptracers
1023    o new package prifiles:
1024      code to compute profile-based cost by Gael Forget
1025      (modifs in ecco, ctrl, autodiff)
1026    o Benign bug fix in initialization (spotted by M. Mazloff) of
1027      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1028    
1029    checkpoint58c_post
1030    o adjoint: finish NLFS adjoint and provide reference output in
1031      verification/global_ocean.90x40x15/results_ad_nlfs
1032    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1033      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1034      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1035      with SEAICE_CGRID defined.
1036    o move calendarDumps from "data" to "data.cal" and clean-up the code
1037      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1038    o add useEXF & useCAL flags (for now, set in hard-coded way)
1039    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1040      (were missing in NH mode, and wrong in quasihydrostatic mode).
1041      waiting for Chris updated version of calc_gw to add those CALLs.
1042    o fix bug in quasihydrostatic S/R ;
1043      add a test for this option: global_ocean.90x40x15.qshyd
1044    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1045      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1046    o add on/off flag useOffLine for package OFFLINE
1047    o seaice:
1048      - modify advection so that it works also on the C-grid
1049      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1050        problem in multi-tile runs with C-grid
1051      - add flags for clipping ice velocities and/or masking solver forcing
1052      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1053        C-grid solver
1054      - added a few comments to seaice_diffusion.F
1055      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1056        are now exclusive)
1057      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1058        required re-ordering the code a little:
1059       + make DAIRN global variable (defined in SEAICE)
1060       + move computation of the viscosities eta and zeta into a new separate
1061         routine (because I need to recompute them in seaice_ocean_stress.F)
1062    
1063    checkpoint58b_post
1064    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1065      update output.txt of exp. aim.5l_cs.thSI
1066    o various mnc cleanups and improvements:
1067      + shrink lookup tables by factor of ~4
1068      + better error reporting when running out of lookup space
1069      + able to handle longer path/file names (up to 500 chars)
1070    o adjoint:
1071      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1072      - TBD: "hidden" mom_vecinv recomp. in dynamics
1073    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1074     (allow to differentiate between forcing components using new integer flags:
1075      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1076     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1077    o ecco
1078      - enable trend removal from SSH anomaly obs.
1079    o adjoint
1080      - a fix for PmEpR when #undef EXACT_CONSERV
1081      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1082      - try to fix "hidden" recomp. in forward_step for NLFS
1083        (NLFS seems broken sometimes after I checked it in)
1084    o seaice:
1085     - add c-grid version of the dynamic solver:
1086       + three new routines that are the c-grid substitute lsr, dynsolver
1087         and ostres
1088       + put a few fields that were local to dynsolver into global common
1089         blocks, so that I can move the computation of stresses etc into
1090         seaice_lsr (saves coding but may break the adjoint).
1091     - replace more hardwired parameters by runtime parameters
1092     - add ice masks that mask the rhs of the implicit solvers where there
1093       is no ice (commented out in seaice_dynsolver, because i am not sure
1094       if this works properly), eventually this should replace the clipping
1095       of ice velocities in seaice_dynsolver to +/-40cm/s.
1096    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1097      include it only where its needed
1098    o move balancing of fluxes before the call of external_forcing_surf
1099    o seaice:
1100      - correct units of turning angles (now they are really in degrees)
1101      - move computation of GWATX/Y out of main routine into dynsolver
1102      - initialize GWATX/Y in seaice_init
1103    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1104      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1105    o seaice: add runtime flags for turning angles (default to zero)
1106    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1107      and trend from exf forcing and ctrl control adjustments
1108    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1109      (since checkpoint57x_post)
1110    o change the default rotation period to 86164.s = the Earth rotation
1111    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1112      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1113    o seaice advection: add code for choosing between the default (2nd order
1114      central differences) and multiDim advection schemes provided by
1115      pkg/generic_advdiff
1116    o seaice:
1117      - removed all references to SEAICE_GRID.h fields from
1118        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1119        (cubed-sphere configuration will change a little)
1120      - grid computations in seaice_init are obsolete now.
1121      - cleaned up code a little so that is easier to read (hopefully).
1122      - added new (better?) discretizations of default advection and diffusion
1123        (turn on with SEAICEuseFluxForm)
1124      - replace 1 in 3d global fields by kSurface in growth.F
1125      
1126    checkpoint58a_post
1127    o seaice:
1128      - bug fix in advect.F
1129    o shelfice:
1130      - separate shelfice load anomaly from pload (breaks with time
1131        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1132        Its default is 0., but it may be computed more cleverly from (unknown)
1133        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1134        done offline. A good approximation of the pressure load anomaly is
1135        necessary to avoid large initial adjustment processes underneath
1136        deep-reaching shelfice.
1137      - small fix in ISOMIP shelfice_thermodynamics
1138      - add more sophisticated thermodynamics of Hellmer (1989), this is
1139        now the default
1140      - give a few constants more intuitive names
1141    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1142      if bulk formulae are used in long integration (especially EmPmR). Turn
1143      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1144      if balancePrintMean, the imbalance that is substracted is printed to
1145      STDOUT.
1146    o fix bug (typo) in obcs_apply_eta.F
1147    o add a new package shelfice which enables us to model the circulation
1148      underneath shelf-ice with draughts of hundreds of meters.
1149     - works
1150     - to do: + include improved thermodynamics
1151              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1152                instead of new field kTopC
1153              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1154                instead of new field R_shelfIce and new code in ini_depth.F
1155                and ini_mask_etc.F?
1156              + adjust vertical mixing schemes?
1157    o seaice pkg:
1158     - add a cpp-flag to include a simple formula for a salinity dependent
1159       freezing point of sea water at the surface
1160     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1161       meridional stresses are now different (and hopefully correct)
1162    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1163       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1164       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1165    o pkg/diagnostics: add options and parameters for regional-statistics
1166       diagnostics ; define regions by reading a region-mask from a file
1167       (might add other options later)
1168    o pkg/bulk_force:
1169     - add option and parameters to use AIM surface-flux formulae.
1170     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1171       others forcing fields (defined in PARM05, parameter file "data") are loaded
1172       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1173     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1174     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1175     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1176       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1177     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1178    
1179    checkpoint58
1180    o add "--embed-source" option to genmake2 which, when the supporting
1181      tools can be compiled (as determined by genmake2) will turn on the
1182      embed_files package which then embeds the entire MITgcm source code
1183      (*.[fFhc] + Makefile) used for the build within the executable
1184      - requested by CNH but off by default
1185      - adds a paltry <9MB to the mitgcmuv executable in most cases
1186      - only writes the output when useEMBEDSRC in eedata is true
1187    o clean up 3-dim. relaxation codes:
1188      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1189      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1190      * Thanks to Tom Haine for testing!
1191    
1192    checkpoint57z_post
1193    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1194      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1195    o fix the pickup behavior for obcs in combination with ptracers
1196    o fix a bug in ptracers_external_fields_load
1197    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1198      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1199    o transfered surface NH pressure to eta field (if exactConserv).
1200    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1201         and update lab_sea output.txt file.
1202    o completing 3-dim. relaxation code: additional term
1203         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1204      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1205      * At compile time, in "EXF_OPTIONS.h" set
1206          #define  ALLOW_CLIMTEMP_RELAXATION
1207          #define  ALLOW_CLIMSALT_RELAXATION
1208      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1209          tauThetaClimRelax3Dim = 15552000.0,
1210          tauSaltClimRelax3Dim  = 15552000.0,
1211      * 3 cases:
1212          1) Use a constant-in-time 3-dim. field
1213          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1214          3) Real-time relax. to time-evolving prescribed field
1215    o Adding Laplacian-type smoothness constraint on
1216      initial and boundary (forcing) controls (ic, bc)
1217      * enable at compile-time via
1218        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1219      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1220      * Absolute scale somewhat unclear so far
1221      * no area weighting was included since no other cost term does so far
1222    
1223    checkpoint57y_post
1224    First step for a NLFS adjoint
1225    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1226    o new init. routines for calc_r_star, calc_surf_dr
1227    o still need to deal with ini_masks_etc
1228    o testreport seemed happy
1229    checkpoint57y_pre
1230    
1231    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1232    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1233    o add new offset feature to offline pkg (plus minor cleanup)
1234    o cfc fixes for final year of integration
1235    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1236      be in GCHEM_OPTIONS).
1237    
1238    checkpoint57x_post
1239    o fix testreport Pb in multiple test experiment.
1240    o cleanup our namelist syntax in verification:
1241      - make it more F95 standards compliant (some work still needed)
1242      - allows the vast majority of our tests to work with gfortran
1243    o Non-Hydrostatic:
1244     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1245     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1246    o Allow to apply AB on T,S rather than on AB(gT,gS):
1247     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1248     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1249       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1250     - need a "clever" read_pickup to restart from the other AB formulation
1251    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1252    o remove some unused variables (reduces number of compiler warnings)
1253    o adjoint
1254      * Disable useVariableViscosity for adjoint for time being
1255        (there are a number of extensive recomputations)
1256      * Initialize certain variables needed for adjoint
1257    
1258    checkpoint57w_post
1259    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1260                 fix the singleCpuIO RS version of MDSWRITEFIELD
1261       and add a WARNING if using globalFiles=T with multi-processors.
1262    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1263      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1264    o tracer advection scheme:
1265      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1266       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1267       was not very convenient).
1268      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1269       (further tests needed for the implicit DST & Flux-Limiter schemes).
1270    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1271      and sRef for convenience, handy, when you want to initialize
1272      ptracers in a large domain with a constant non-zero value. Also,
1273      untangle ptracers_init.F a little.
1274    
1275    checkpoint57v_post
1276    o change dome exp. to use variable viscosity in side-drag terms.
1277    o remove all the files from the cfc_offline test since they are now
1278      incorporated into tutorial_cfc_offline which has been producing
1279      identical results for a few days of testing
1280    o add new parameter: sideDragFactor to enable half-slip-side BC
1281      and change side-drag S/R to use viscosity from mom_calc_visc
1282      (can switch back by setting sideDragFactor=0.); affects results at
1283      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1284       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1285    o vorticity & strain are now computed without masking, to account for
1286      no-slip-side BC in variable viscosity calculation ; mask is applied
1287      anyway later on, before computing advection/coriolis terms.
1288    o modify exp4 to test new obcs support for reading from external files
1289      and for passive tracers
1290    o fix behavior of ptracers_monitor when monitor output is written to a
1291      netcdf-file; still not independent of monitor.F (writes in the same
1292      file).
1293    o change default value of tRef (put a uniform, meaningful value for ocean
1294      & atmos) and initialize sRef (was missing, as Martin mentioned).
1295    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1296      to be proportional to enstrophy dissipation length.  Thus,
1297       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1298      This is now consistent with Smagorinsky and with the manual.
1299    
1300    checkpoint57u_post
1301    o OBCS and PTRACERS: add open boundary support for passive tracers
1302      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1303        OB-values from file; this is not different from the way theta and salinity
1304        are treated
1305      - however, Orlanski-radiation conditions are not supported, and the model
1306        will stop if you use pTracers and Orlanski at the same time.
1307      - beefed up the rountine obcs_external_fields_load: now only those open
1308        boundary values are overwritten with values from files for which there
1309        are really files, otherwise the OB-fields remain untouched. This makes
1310        it possible to use different OBs at different ends of the domain (as
1311        with EXF)
1312    o reduce number of exch calls in shap_filt (s2).
1313    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1314      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1315    
1316    checkpoint57t_post
1317    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1318    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1319      same truncation, independent of the face number: affects affects several
1320      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1321    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1322      note that biharmonic viscosity + no-slip was not tested in any experiment.
1323    o fix bug in non-linear free-surf side-drag ; generate new output for
1324      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1325    o make mnc honor the writeBinaryPrec flag for most kinds of output
1326    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1327    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1328      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1329    o add brackets in multi-terms sum to get same truncation, independent of
1330      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1331      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1332    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1333      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1334      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1335      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1336      Suggested values of viscosity parameters found in mom_calc_visc.
1337      Many new viscosity diagnostics available.
1338    
1339    checkpoint57s_post
1340    o Add clearing-house for viscosity calculations, mom_calc_visc and
1341      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1342      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1343      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1344      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1345      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1346      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1347      ViscAhStrain and viscAhTension are now retired.
1348    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1349    o In response to JMC's bug report, genmake2 now ignores any soft-links
1350      that it finds in the *current* directory when searching for files.
1351      Soft-links found in any other source directories will still work as
1352      they did before.
1353    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1354      a C routine to unlimit the stack size
1355    o mnc-ify pkg/aim snapshot vars
1356    o mnc-ify pkg/land as requested by Daniel
1357    o various changes to mnc including:
1358      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1359      - output can now be grouped so that all files within a group
1360          change the ITER portion of their names in lock-step together
1361      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1362          and works with both EXCH1 and EXCH2 (but needs more testing)
1363      - writing works for all verification test cases w/ g77 on Linux
1364    
1365    checkpoint57r_post
1366    o make MNC variable initialization happen earlier
1367    o add diagnostics for (almost) each term of the momentum Eq.
1368    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1369    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1370    o remove MINIMAL_TAVE_OUTPUT option ;
1371      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1372    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1373      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1374    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1375    o add time-dependent SST, SSS control
1376    o cost terms in ecco/ modularized (new cost_generic.F)
1377    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1378    o new infrastructure for seaice model vs. obs misfits in seaice/
1379      * driver from the_main_loop.F is seaice_cost_driver.F
1380      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1381      * gradient check in Exp. 6a of natl_box_adjoint/
1382    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1383      (see README file)
1384    
1385    checkpoint57q_post
1386    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1387    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1388      - bug was reported by Jean-Michel and Ian Fenty
1389    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1390      update exp. cpl_aim+ocn output.
1391    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1392      Needed for high-res. runs with large global files
1393      to be able to limit tapelev size
1394    o Changed some tests for adjoint:
1395      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1396      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1397      * global_ocean.90x40x15/ back to default 3-level checkpointing
1398    o Modifications to enable scripted COMMON to MODULE conversion
1399      * verification/OpenAD/code/ has necessary scripts and description;
1400      * converts, compiles and runs successfully;
1401    
1402    checkpoint57p_post
1403    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1404    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1405      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1406    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1407    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1408      (was already the case for dissipation with mom_vecinv,
1409       and also the case for grad.PhiHyd when staggered-timeStep)
1410      This will allow to put dissipation out-off the AB time-stepping.
1411     Unfortunately, affects truncation error. Update output of exp. that "fails"
1412      (cg2d matching number) and leave the others for later: front_relax(10),
1413      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1414      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1415    
1416    checkpoint57o_post
1417    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1418      (2) its ready to be documented during the 20050801 DocFest
1419    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1420      for ideal_2D_oce and lab_sea on linux_ia32_g77
1421    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1422      in global1x1_tot/code_seaice_adj to access indices 32, 33
1423      (worth another tag)
1424    
1425    checkpoint57n_post
1426    o adding precip control xx_precip 32
1427    o adding swflux control xx_swflux 33
1428    o Replacing 10 forcing penalty cost routines by 1 generic.
1429    o Implementing partitioning in time-mean and variable adjustment
1430      for atmos. state.
1431    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1432  o in natl_box_adjoint:  o in natl_box_adjoint:
1433    * updated: results_bulk/    * updated exp 1 to 10
1434    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1435    o updated global1x1/*_seaice_adj/
1436      to incorporate latest changes
1437    o enable useSingleCpuIO for mdsio vector routines
1438      (applies in particular to tapelev I/O)
1439    o removed inefficient K-loop in all active_file*control*.F
1440    
1441  checkpoint57m_post  checkpoint57m_post
1442  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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