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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.972 by jmc, Sun Apr 6 03:37:44 2008 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7  o adding precip control xx_precip  o pkg/dic: test for "pickup_dic" file when restarting ;
8  o moved ptracer ctrl index 17 -> 32    if no pickup-file, can restart with a re-initialised pH (same as it did
9      before) providing pickupStrictlyMatch is set to False.
10    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
11      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
12    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
13      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
14    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
15     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
16       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
17    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
18       scheme to use for vorticty-term ;
19     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
20       (with default selectVortScheme, return to original discretisation)
21     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
22    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
23    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
24      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
25      also fix diagnostics VISCAHW & VISCA4W.
26    
27    checkpoint59o
28    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
29    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
30      move a few statemens out the main loop into separate loops
31    o pkg/shelfice:
32      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
33        (kg/m^2/s), does not break tests, because in verification/isomip,
34        rhoConstFresh=rhoConst (by accident)
35      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
36      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
37        new file model/src/seawater.F, so that they are available for all pkgs.
38      - convert potential temperature into in-situ temperature. This changes the
39        isomip tests => update tests
40    o add a flag writePickupAtEnd (default=true) to be able to suppress
41      writing a pickup at the last timestep
42    o tools/mpack-1.6 :
43      - disable automake (not working) and autoconf (not needed).
44      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
45        also cleaner with much less compilation warnings.
46    o pkg/profiles:
47      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
48      (for "less than 32 characters name" compiler requirement)
49    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
50      conditions that have a different sampling frequency than S/T/U/V obcs
51    o pkg/diagnostics (stats-diags):
52      - fix global Min/Max in case 1 processor get only empty tiles
53    o genmake2: replace (4 times)
54         make genmake_tc_1.o >> genmake_warnings 2>&1
55      with
56         COMM="$CC $CFLAGS -c genmake_tc_1.c"
57         echo $COMM >> genmake_warnings
58         $COMM >> genmake_warnings 2>&1
59      to make genmake2 always see the value of CC as specified in the optfile.
60    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
61      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
62      - modify verification advect_cs test to test SOM-advection on CS-grid.
63    o pkg/ctrl:
64      - Rewrite of ctrl_map_ini_ecco.F,
65        introducing a generic routine (ctrl_map_ini_gen.F).
66      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
67    
68    checkpoint59n
69    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
70      number in dedicate array "hdiag":
71      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
72        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
73      - many small changes (integer format) for large number of diagnostics
74      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
75        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
76    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
77      usingSphericalGrid, this allows to define the rotated grid coordinates
78      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
79      geographical coordinates according to the inverse of the rotation defined
80      by the Euler angles, so that Coriolis parameter and online-interpolation by
81      exf works with the geographical coordinates on XC/YC/XG/YG.
82      Naturally, this feature does not work with all packages, so some
83      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
84      profiles), because there the coordinates are assumed to be regular
85      spherical grid coordinates.
86    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
87      - introduce isopycnal diffusion coefficient control.
88    o tools/adjoint_options:
89      - additional control vector components.
90    o pkg/mnc: have mnc create marginally meaning full coordinate variables
91      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
92    o pkg/mypackage:
93      - add example of read/write pickup for state-var ;
94      - add entry points to the main code for state-vars diags & write-pickup.
95    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
96      transitions for useExfYearlyFields
97      - add new subroutine that determines the file to read from for
98        use*YearlyFields = .TRUE. and .FALSE.
99      - add a verification experiment to global_with_exf that tests
100        useExfYearlyFields with USE_EXF_INTERPOLATION defined
101    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
102      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
103      subroutines (which could be generated from a template, because they are
104      almost identical), for now they are included in obcs_prescribe_read.F for
105      simplicity
106    o pkg/exf:
107      - add a little more diagnostic to exf_interp_read (in analogy to
108        mds_read_field, can be turned off with debugLevel < debugLevA=1)
109      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
110        ugly but fast by unrolling short inner loops, inserting a unroll=8
111        directive in routine lagran, and splitting a loop and making do while the
112        outermost loop (the latter requires the intoduction of index arrays)
113    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
114    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
115      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
116    o verification/seaice_obcs: updated for restart test and latest options
117    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
118      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
119      for now this is only available for the C-grid code and also within
120      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
121    
122    checkpoint59m
123    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
124      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
125    o gad_som : fix flux output (& diagnostics) to have same units as other  
126      advection scheme fluxes (was previously multiplied by deltaT).  
127    o added verification/seaice_obcs both to test seaice open boundaries
128      and to provide an example matlab scrpt for generating them
129    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
130    o pkg/salt_plume: clean up salt_plume_frac.F to
131      remove redundancy in PlumeMethod 1 and 4
132    o pkg/kpp: added saltplume diagnostics
133    o pkg/obcs and pkg/seaice:
134      - do not set uice and vice to zero when OB*icefile are unspecified
135      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
136      - moved seaice tracer obcs after call to seaice_growth
137    o pkg/salt_plume: added various options for salt plume depth
138      criterion and for vertical distribution of the salt
139    
140    checkpoint59l
141    o pkg/ptracers: new version of ptracers pickup:
142      read meta file and write only fields which are needed to restart.
143      ( same logic as main pickup file ; also using pickupStrictlyMatch )
144    o pkg/seaice:
145      - add timescale for melting due to warm mixed layer as a means of
146        setting SEAICE_availHeatFrac more conveniently
147      - add a CPP-flag/runtime parameter check for flooding algorithm
148      - reformulated availHeat in seaice_growth.F to be independent of AREA
149    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
150      unit changes
151    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
152    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
153      SX vector computer.
154    o pkg/seaice:
155      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
156        seaice forcing fields can now be read only through pkg/exf
157      - removed some unused halos
158    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
159    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
160      or U/VICE from U/VWIND before computing U/VSTRESS
161    
162    checkpoint59k
163    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
164      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
165    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
166      all experiments pass when compile with un-initialised var. checking option.
167    o added pkg/salt_plume
168    o script to test restart (for now, in MITgcm_contrib/jmc_script)
169    o pkg/seaice: new read/write pickup version.
170      read meta file and write only fields which are needed to restart.
171      ( same logic as main pickup file ; also using pickupStrictlyMatch )
172    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
173    o lab_sea.hb87: modify the domain & update output.hb87.txt :
174      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
175      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
176      process. Fixed here by closing the domain at the Northern boundary.
177    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
178    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
179      a set of consecutive levels in/from a 3-D array.
180    o pkg/ptracers:
181      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
182      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
183    
184    checkpoint59j
185    o in pkgs: dic, obcs, offline, rbcs:
186      standard way to compute coeff. for time interpolation between 2 time reccords
187      which retains full precision (& make results less dependent on compiler).
188      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
189    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
190      packages instead of reading ice cover and wind speed separately
191    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
192     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
193      to allow to compile customized code before the update)
194    o cleaning-up:
195      - fix CPP instruction syntax in pkg/obcs
196      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
197        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
198      - fix some threads issue in IO parts.
199    o pkg/dic:
200      - add tons of "_d 0" (--> much better testreports !)
201       and then update outputs of tutorial_global_oce_biogeo
202    o pkg/mom_fluxform:
203      add a special version of momentum advection intended to conserve momentum
204      next to a bathymetry step or a coastline edge. (default = off = #undef)
205    o new read/write pickup version:
206      - for now, only implemented for main (mdsio) pickup file.
207      - write out only what is needed to restart; merge pickup_nh , pickup_ph
208        and main pickup together.
209      - read meta file; read only what is needed to restart; stop if a field
210        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
211        if it make sense (even if the restart is not perfect).
212      - if no meta file, assume that pickup to read corresponds exactly to
213        a pickup that would currently be written.
214      - read pickup written in the old format (until checkpoint59i) if it
215        recognizes an old meta file (no field-list).
216      - add a meta file in exp. which starts from a pickup: 2 cases:
217        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
218         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
219        b) a meta file describing the content of the associated pickup file
220         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
221    o pkg/mdsio & pkg/rw:
222      - new routine to read a meta file ; new set of routine to read
223        Multiple-fields file (with meta file).
224    o added open boundary conditions capability for seaice
225        HSNOW, HSALT, UICE, and VICE
226    
227    checkpoint59i
228    o adjoint:
229      * fix multiDimAdvection adjoint
230        (partial recomputation problem by TAF for fVerT(:,:,kDown)
231        and comlev1 size definition (maxpass vs. max. number of tracers)
232      * verification/global_ocean.90x45x15 adjoint now tests
233        NLFS and multiDimAdvection using DST3 (=30)
234      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
235    o pkg/kpp: add "_d 0" to real constant (if missing);
236      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
237      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
238    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
239      for internal parameters related to restart process (formerly from PARAMS.h)
240      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
241    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
242      as argument. (only atm2d & obcs write_pickup have not yet been updated)
243    o pkg/monitor:
244      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
245      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
246      - account for deep Atmosphere factor and density factor (anelastic)
247    o added open boundary conditions capability for seaice HEFF and AREA
248    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
249      thermodynamics
250      - requires a little reorganization, which affects the testreport results
251        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
252        so that now the conservative form is tested
253      - add a few comments
254    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
255    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
256    o add new diagnostics to seaice: advective, diffusive fluxes (only for
257      multidim-advection, for scheme 2 they are not filled) and transports,
258      thermodynamic growth rates
259    o change units of EmPmR (inside the code, + within coupling interface)
260      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
261      Affects results @ truncation level (cg2d match) and update output of
262       experiments: lab_sea(6), global_ocean.90x40x15(10),
263      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
264      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
265      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
266      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
267    
268    checkpoint59h
269    o pkg/exf:
270      - improve vectorization by moving if-statement out of loops in
271        exf_mapfields, exf_radiation
272      - exf_bulkformulae.F: introduce 2D fields and vectorize code
273    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
274    o testreport:
275      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
276        monitor & update offline_exf_seaice exp. output.
277      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
278    o pkg/seaice:
279      - bug fix in the evp solver: boundary conditions were affected be
280        masking of zMax/zMin (changes results)
281      - minor bug fix in boundary conditions in seaice_calc_strainrates
282        (changes results for no_slip)
283      - seaice_lsr.F: make interpolation of eta dependent on boundaries
284      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
285      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
286        stress formulation and no-slip boundary conditions
287    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
288      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
289    o pkg/seaice: a first HSALT time stepping equation has been checked in
290    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
291      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
292      without requiring DO-IF statements
293    o pkg/thsice:
294      use continuous power-law function for partition of energy between lateral
295      melting/freezing and thinning/thickening ; old code using step function
296      still available with #undef THSICE_FRACEN_POWERLAW
297      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
298    o testreport: change AD testing : check against results/output_adm.txt
299      using same scripts as for forward test.
300    
301    checkpoint59g
302    o adjoint testing: in preparation for changing testreport:
303      - output format: cost and grad written on separated lines
304      - ad output results in directory "results" (instead of "results_ad")
305    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
306    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
307    o pkg/ecco: allow user defined cost function contributions
308    o testreport:
309      Allow to choose (per experiment) the list of tested output variables
310       and the main variable (used to issue a pass/FAIL ) ;
311      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
312      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
313      Also modify printing of summary:
314       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
315       b) echo the list of tested variables in the individual summary.txt of
316          each experiment.
317    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
318      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
319      (but still depend on the tile decompostion of the domain).
320    o pkg/seaice: change a discretization detail to make the B-grid code
321      "more symmetric". This change is likely to remove all "ridges/leads" that
322      where quasi-aligned with the grid in B-grid solutions. It may also be
323      the solution to the stress coupling issues with the B-grid.
324    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
325      remove .cvsignore from input dir. (since testreport no longer run here).
326    o pkg/thsice:
327     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
328     - fix reshaping of sea-ice just after advection:
329       melt all the ice only if ice-volume is too small.
330     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
331       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
332     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
333    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
334      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
335    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
336      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
337      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
338      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
339      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
340      -> update output.txt
341    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
342     this affects truncation error: -> update output.txt of exp:
343      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
344      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
345    
346    checkpoint59f
347    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
348    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
349      a bounded range (in forward mode)
350    o pkg/ecco, ctrl, autodiff and mom_common:
351     internal parameter controls, completements of implementations
352    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
353    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
354      (not seem any difference in testing results).
355    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
356       at face corners.
357    o pkg/generic_advdiff:
358     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
359      loop range indices for computing vertical advection tendency
360      and do the calculation in the interior only (no overlap) ;
361      for now, only implemented for SOM advection (to save CPU time).
362     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
363    o exch2 adjoint
364      First set of changes:
365      - add exch2 hand-written adjoint templates
366      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
367        This will require cleanup in pkg/autodiff/*.F
368        (changed routines currently kept separate in verif. code/)
369      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
370        that used to hide exch2 or cubed-sphere specific code
371        (commented via 'cph-exch2')
372    o pkg/seaice
373      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
374    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
375       output of global_ocean.cs32x15.thsice .
376    
377    checkpoint59e
378    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
379      for B-grid vector (not yet tested) and C-grid vector (<- only used
380      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
381    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
382      (#ifdef ALLOW_SALT_PLUME)
383    o gather_2d/scatter_2d: removed halo regions
384    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
385      scheme and the corresponding test case (under front_relax dir). For now,
386      only available with Skew-flux form and not yet tested in realistic set-up.
387      adjoint: store directives updated, but gradient checks deteriorated,
388      so maybe GM/Redi adjoint is now broken.
389    o seaice adjoint
390      * add AREA, HEFF, HSNOW as control variable
391        (should not change lab_sea results)
392      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
393    o pkg/seaice:
394      * added computation of saltFlux in seaice_growth;
395        For time being, sea ice salinity is assumed constant
396        contribution of snow flooding to freshening of sea ice is neglected.
397        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
398        defaults to 0.0 in order to maintain backward compatibility.
399        Typical values for SEAICE_salinity are 4 to 10 g/kg.
400      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
401      * added SEAICE_availHeatFrac, which specifies fraction of surface level
402        heat content used to melt or grow ice
403      * commented out cap of HICE: it helps keep ice thinner
404      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
405      * applied OBCS T/S mask to HEFFM sea ice mask
406    
407    checkpoint59d
408    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
409     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
410     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
411    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
412     and change default value of parameter "GM_Small_Number";
413     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
414       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
415       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
416    o pkg/ecco: cost function when applying pkg/smooth to controls
417    o pkg/ctrl: add forcingPrecond run time parameter
418    o pkg/seaice:
419     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
420     - fix bug in metric terms of u-equation in LSR solver (implicit part),
421       changes verification/lab_sea
422     - rearrange implicit part of u-equation in LSR solver to make it easier to
423       read, understand, and debug. This causes changes at the truncation level.
424     - fix (serious) bug in the boundary conditions (sign error in the implicit
425       part) of the LSR solver. Changes all LSR results.
426     - fixed problem with HSNOW initialization to avoid thick snow when AREA
427       is initilized with small values - does not change lab_sea results.
428     - added HsnowFile initialization capability
429    o pkg/smooth: addition to model/src and pkg/ctrl so allow
430     initialization of pkg/smooth and application to control vector
431    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
432    o dependencies: pkg/profiles requires pkg/cal
433    o pkg/profiles:
434     - added option ALLOW_PROFILES_GENERICGRID
435         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
436         that interpolation information (grid points and coefficients) is provided
437         within the netcdf input files.
438         -> sample matlab scripts can be found in MITgcm_contrib/gael
439         that allow you to prepare netcdf input files.
440     - also modified: cleaner include statements, cleaner error print statements,
441       cleaner stops when error, and more tests of the netcdf input files consistency.
442    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
443    o pkg/seaice:
444     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
445       requires a new routine: seaice_diagnostics_fill.F
446     - make sure that seaice does not move if not forced (pressure replacement
447       method, Hibler and Ip, 1995), changes results
448     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
449     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
450       It is turned off by default (=-1.), because it changes the results.
451     - make it possible to read AREA from a file, too.
452    
453    checkpoint59c
454    o add S/R and diagnostics for oceanic mixed-layer depth
455    o move GMRedi call after all vertical mixing schemes (including KPP)
456    o pkg/thsice:
457     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
458      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
459    o pkg/obcs:
460     - bug fix for balance code
461    o pkg/seaice:
462      - allow values of SEAICE_elasticParm > 1
463      - add new parameter SEAICE_evpTauRelax as an alternative
464        to SEAICE_elasticParm
465      - make lsr boundary conditions free slip (by default), changes result
466      - add code for no slip boundary conditions for lsr
467      - set minimum of zeta to zero (and not 4e8) (changes results)
468      - add a cap on AREA after advecting AREA if seaice_growth is not called
469    o change calculation of Visbeck K:
470      - no longer depend on tapering scheme; instead, compute slope (limited
471        by GM_maxSlope). this is equivalent to what was comuted before with
472        clipping or linear tappering.
473      - fix vertical averaging (wrong by 1/2 level)
474      - leave the old version (but will not be maintained) within
475        #ifdef OLD_VISBECK_CALC / #endif
476      - update output of exp. ideal_2D_oce
477    o change error catch in calc_r_star to improve vectorization
478    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
479      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
480    o adjoint:
481      Re-organized adjoint checkpointing according to Matt Mazloff
482      (but with modifs/completions/cleanups)
483      Storing is now bundled into large arrays to optimized I/O
484      (and second step in cleanup of the_main_loop)
485    
486    checkpoint59b
487    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
488      - export/import (between ocean & coupler) fields needed for ocean DIC.
489    o pkg/seaice:
490      - get rid of three more exchanges seaice_calc_viscosities (required
491        different loop boundaries in seaice_lsr and seaice_ocean_stress)
492      - bug fix in seaice_ocean_stress (update of lab_sea required)
493      - reduce loop boundaries to necessary minimum also in seaice_evp
494      - go back to the old way of computing deltaC/Z as the adjoint likes that
495        better
496    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
497      passive tracer to an Age Tracer) + update output.txt
498    o pkg/exf:
499      - implement A-grid / C-grid selection for wind-stress input files.
500      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
501      for now, in exf_bulk_largeyeager04.F only :
502      - change implementation for case where windspeed + 2. components wind-stress
503        are read-in. AND use rhoConstFresh to convert evap.
504    o pkg/seaice:
505      - use correct EXCH_UV for wind-forcing (on A-grid).
506      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
507        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
508    o pkg/exf:
509      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
510      EXF_INTERPOLATION:
511      - merge global_with_exf/code version of exf_interp_read.F
512        to the main code ;
513      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
514        reading the file ; Important: This options needs to be defined to recover
515        previous code.
516        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
517      - no longer loose real*8 precision along the way when using exf_iprec=64.
518    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
519      - change discretisation of evp-solver in order to avoid another exchange
520        (changes lab_sea) and clean up a little
521      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
522        help the adjoint (this also changes the results slightly)
523      - add a few "_d 0" where they had been missing in seaice_evp.F
524      - cleaning up: remove unused seaice_calc_rhs.F
525    o pkg/exf: some cleaning-up:
526      - change various "constants" into runtime parameters
527      - cleaned-up Large&Yeager04 routine which should eventually
528        replace exf_bulkformulae.F (changed names of S/R and CPP)
529        and merged various ALLOW_ATM_WIND options
530     only used with thsice pkg (in thsice_get_exf.F):
531      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
532        which are used when useStabilityFct_overIce=TRUE (= the default)
533      - change default values of ice & snow emissivity and scale downward LW
534        by ice & snow emissivity.
535    o pkg/thsice:
536     fix few little problems, in thsice_calc_thickn.F:
537      - growth vertically (and not laterally) if iceFrac == iceMaskMax
538      - melt only laterally if hIce < hThinIce (as the comments say)
539      and in thsice_extend.F:
540      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
541      - start to form ice as soon as the minimum ice-volume is reachable.
542     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
543      and cpl_aim+ocn
544    o pkg/kpp
545     - move computation of surface related input fields to KPP into a new
546       subroutine kpp_forcing_surf.F
547     - remove wrong (within bi,bj loops) EXCH calls.
548     - little cleaning (add argument myThid in last position, cvs header ...)
549     - for now, fix conservation problem by exchanging KPPviscAz (may not
550       be the best fix)
551    o pkg/seaice
552     - check for inconsistent evp parameter/cpp-flag combination
553     - remove leftover errIO flat for obsolete name list error handling
554    o OpenAD
555     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
556    
557    checkpoint59a
558    o pkg/seaice: some parameter clarifications and a little bit of clean up
559    o pkg/thsice: rename run-time parameters:
560       himin       -> hIceMin
561       himin0      -> hThinIce
562       hihig       -> hThickIce
563       i0          -> i0swFrac
564       transCoef   -> bMeltCoef
565       frac_energy -> fracMelting
566      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
567       with default values (for now) that do not change the results.
568      remove old version of thsice vars advection in pkg/seaice.
569    o in FFIELDS.h:
570      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
571      - make pLoad & sIceLoad always available (but still only used if
572         ATMOSPHERIC_LOADING is #define).
573    o pkg/kpp: replaced _KPP_RL with _RL
574    o bug fixes for vertical diffusivity computations when both KPP and
575        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
576        are no longer updating the vertical diffusivity array
577        (passed as argument) but are (re-) setting those arrays.
578    o pkg/seaice: fix bug in evp solver, while doing that
579      - change (improve?) discretization of stress computations for both
580        cgrid-lsr and evp solver
581      - add a new routine to compute strain rates
582      - the above changes lab_sea results
583      - add no slip conditions for evp solver (off by default), lsr-version
584        may follow
585      - fix exchange for shear at Z-points (does not change lab_sea)
586      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
587        (to force the user to pick a time step since there is not "safe" way
588        of choosing it)
589      - add principal stress diagnostics
590      - rearrange fields for evp a little to avoid having to call a: too many
591        exchanges and b: exchanges for stress trensor components which we do
592        not have.
593      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
594        of evp, complete rewrite for lsr case (latter is does not yet work
595        in all cases)
596    o pkg/kpp: add code to have mixing in shelf ice caverns
597      - add myThid to all kpp routines (long overdue)
598    
599    checkpoint59
600    o pkg/exf:
601      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
602        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
603      - move exf header files from lower_case.h to UPPER_CASE.h ;
604        add missing cvs Header & Name
605      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
606      - add namelist param. selectStressGridPosition, exf_monFreq
607      - retire many _CLIM routines, and remove data.exf_clim
608        + params moved to data.exf
609        + climsst, climsss now handled by exf_set_gen, i.e.
610          climss?period=0 refers to constant field,
611          climss?period=-12 to monthly forcing
612      - split up namelists in data.exf
613    o pkg/seaice:
614      - remove seaice_exch and seaice_exch_uv
615      - remove superfluous exchange of theta
616      - add myThid to seaice_budget_ocean/ice
617      - add new interface for atmospheric wind forcing (C-grid only)
618        + new routine
619        + two new field (taux, tauy for stress over ice)
620        + removed one global field (DAIRN) for C-grid case only
621    o pkg/thsise
622      - 2nd set of modifs for thsice adjoint in conjunction with exf
623    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
624    
625    checkpoint58y_post
626    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
627      vertical diffusivity, similar to that in MOM4; turned on using
628      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
629      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
630    o Added capability for 3D specification of background vertical diffusion
631      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
632      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
633      "data" file that contains the 3D vertical diffusivity coefficients.
634    o ice dynamics (pkg/seaice) with thsice thermodynamics:
635      - add code within pkg thsice to advect & diffuse sea-ice fields
636      similar to (and will replace) what has been added in  seaice_advdiff.F,
637      but: - conserving Mass, Heat & Salt.
638           - better when using non-linear advection scheme (not yet fully tested)
639           - can also be used in atmospheric set-up (for now, only the diffusion).
640    
641    checkpoint58x_post
642    o IO option for global-file compact format:
643      - add options when generating topology (utils/exch2/matlab-topology-generator)
644      - add I/O capability (pkg/mdsio).
645      - adapt utils/matlab/rdmds.m to read this format.
646      for now long-line format not yet supported by pkg/mdsio (& exch2).
647    o shelfice: add a few diagnostics
648    
649    checkpoint58w_post
650    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
651      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
652      (and replace horiVertRatio in NH code).
653      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
654                         and tutorial_plume_on_slope (sensitive to truncation)
655    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
656      directly to drive seaice model (C-grid only)
657    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
658     - reintroduce computation of wind from stress,
659     - compute tau (in exf_bulkformulae.F) from windstress averaged to
660       mass points to avoid tau = 0
661     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
662    o rdmnc.m: make it work with "global" files created with gluemnc
663    o rdmnc.m : some improvements in dealing with singleton dimension
664      (tested on all testreport mnc output files).
665    o genmake2: disable pkg/profiles if netcdf test fails.
666    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
667    o move call to cal_readparms up to make calendar parameters/variable available
668      to all packages
669    
670    checkpoint58v_post
671    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
672      useDynP_inEos_Zc tested.
673    o pkg/exf: changes to properly interpolate/mask/scale initial fields
674    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
675      and portions thereof.  See read_cs.txt for description and examples.
676    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
677      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
678      following the great-circle arc between those 2 points.
679    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
680      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
681    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
682     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
683     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
684     - still needs work (not working with some options ; efficiency to improve)
685       and serious testing.
686     - use this scheme for temperature & salinity in 2 advection test exp.:
687       advect_xy & advect_xz, respectively.
688    
689    checkpoint58u_post
690    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
691    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
692    o testreport: add option "-skipdir" to skip some test.
693    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
694      momentum calculation.
695    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
696    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
697      remove checkpoint.F and the_correction_step.F (no longer used);
698      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
699    o add option (linFSConserveTr) to correct for tracer source/sink due to
700      Linear Free surface
701    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
702    o pkg/thsice: fix reading mnc-pickups
703    
704    checkpoint58t_post
705    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
706    o pkg/mdsio:
707     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
708       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
709       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
710     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
711     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
712       either MDS_READ_FIELD or MDS_WRITE_FIELD )
713     - new S/R (to replace MDSWRITEMETA), which allows to write more
714       informations (variable names, time ...) to meta files.
715     - modify rdmds.m to give back the meta file content.
716    o pkg/diagnostics: change vertical interpolation to be safer, and more
717       flexible (define p-levels to interpolate to in data.diagnostics);
718      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
719       diagnostic pointer.
720    o pkg/seaice: more cleaning up of seaice_growth, added many comments
721    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
722    o fix multi-category seaice:
723     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
724       SEAICE_MULTICATEGORY
725     - fix short wave heat flux
726    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
727       and allow to use EVP solver. Change forward lab_sea: test both EVP
728       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
729    o Initial check-in of lab_sea adjoint
730      (very similar to natl_box_adjoint/code_seaice)
731      * used C-grid and EVP solver
732      * used KPP, GM/Redi
733      * uses inAdExact=.TRUE.
734      * gradient checks fail for both ADM and TLM
735        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
736        f.d. gradients actually seem more problematic than ADM, TLM gradients;
737        issue is related to forward mismatch between g77 an ifort
738    o pkg/seaice: overhaul of thermodynamics
739     - growth.F and groatb.F are replaced by new routine seaice_growth.F
740     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
741     - move a few global fields out of SEAICE.h into seaice_growth.F and
742       make them 2D (FICE/QNETO/ ...)
743     - remove FO (it is the same as QNETO)
744     - introduce a few local fields to avoid modifying external fields such
745       as atemp, etc.
746    
747    checkpoint58s_post
748    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
749      changed exf_set_gen.F so that
750        genperiod=0 means input file is one time-constant field and
751        genperiod=-12 means input file contains 12 monthly means
752    o CG2D: use pre-computed solver main-diagonal (stored in common block);
753      this affects truncation error ; generate new output file for exp. which
754      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
755        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
756        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
757        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
758        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
759        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
760    o start implementation of deep-atmosphere and anelastic formulation
761    o verification: remove 2nd copy of input files and use script "prepare_run"
762      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
763    o mom_common/vecinv/fluxform: fix a few initialisation isssues
764    o profiles: fix for multithreaded case
765    
766    o diagnostics: rename few diags:
767      s/'PRESSURE'/'RCENTER '/g
768      s/'TICE    '/'oceFreez'/g
769      s/'TAUX    '/'oceTAUX '/g
770      s/'TAUY    '/'oceTAUY '/g
771      s/'SWFLUX  '/'oceQsw  '/g
772      s/DIFx/DFxE/g
773      s/DIFy/DFyE/g
774      and add few ocean-forcing diagnostics:
775      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
776    o modifications to pkg/seaice/growth.F and budget.F, which change results of
777      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
778      as actual snow thickness.  It now refers everywhere to effective snow
779      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
780    
781    checkpoint58r_post
782    o modifications to pkg/seaice/growth.F, which change results of
783      lab_sea experiment: fixes pertain to melting snow over open water, to
784      masking EVAP under sea ice, and to using the correct AREA variable for
785      computations of EVAP, PRECIP, HSNOW, and GHEFF
786    o add ability to read bathy, salt, and theta using MNC (off by def)
787    o add flooding algorithm and advection of HSNOW for pkg/seaice;
788      both are turned off by default and do no change any results
789    o seaice advection with pkg/thsice: a step toward the use of non-linear
790      advection scheme, but #ifdef or commented out for now (requires more EXCH).
791    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
792      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
793      in natl_box (affects results @ truncation level: update output.txt)
794    o multi-threading and IO:
795      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
796      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
797        (needed to work with SingleCpuIO): tested in all verif. exp.
798    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
799      affects the results (but none of the verification test uses this scheme).
800    o Adding some pkg/diagnostics capability to pkg/seaice
801      (will certainly be subject to changes)
802    o ctrl: adding new control variables:
803      lwflux, lwdown, evap, snowprecip, apressure, runoff
804    
805    checkpoint58q_post
806    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
807      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
808      high_res_cube configuration by 4% on Columbia.
809    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
810      add (in global_with_exf/code) a version of EXF_INTERP_READ without
811      dynamical allocation (seems to work in multi-threaded).
812    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
813      single CPU io) so that TAF does not have to see EESUPPORT.h
814    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
815    
816    checkpoint58p_post
817    o obcs: stop if obcs is used with useCDscheme = .true.
818    o shelfice:
819     - fix a sign error so that no slip at shelfice interface works
820     - remove stop for combination non-hydrostatic code and shelfice. That does
821       not mean, that the results are correct, but at least they are numerically
822       stable
823    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
824    o added adjoint exch routined for all exch*3d* routines
825      and updated flow directives
826    
827    checkpoint58o_post
828    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
829      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
830    o change controling S/R for writing pickup file (new S/R do_write_pickup)
831      and clean-up reading/writing of pickup files.
832    o fix local version of read/write pickup (NH part) in rotating_tank/code
833    o simplify EXCH interface:
834     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
835     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
836    o added the regrid package
837    o shelfice:
838     - add a simple boundary layer scheme to reduce noise
839     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
840    
841    checkpoint58n_post
842    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
843       local variable (not in common block).
844    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
845      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
846      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
847        to work with SingleCpuIO.
848    o add "_d 0" to real constant of pkg/cfc subroutines ;
849       update exp. cfc_exemple & tutorial_cfc_offline output files.
850    o multi-threading and IO:
851      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
852        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
853      - barrier before and after reading.
854      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
855      - avoid using MDS_WRITELOCAL for LAND pkg output.
856      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
857        common-block variables ; Allows multi-threading with master-thread IO.
858    o change default MAX_NO_THREADS from 32 to 4 ;
859      and stop cleanly when MAX_NO_THREADS is too small.
860    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
861    
862    checkpoint58m_post
863    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
864       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
865    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
866       keep global_ocean.90x40x15 (for AD testing) with former secondary test
867       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
868    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
869        add MITgcm_tutorials (= code + all the tutorials)
870    o ecco, option to compute cost for total ssh (mean+anom)
871    o consistent with addition of ptracer and ssh in pkg/profiles
872    o profiles: adding ptracer and ssh
873    o testreport: change multi-test output-file name
874      (from output.txt.{name} to output.{name}.txt)
875    o profiles: now ok for mutli-tiles case
876    o seaice: add 4 parameters for different advection schemes for area,
877      (effective) seaice thickness, enthalphy, and snow height. Their default
878      is the standard parameter SEAICEadvScheme
879    o calc_gw:
880     - add cosFacU in zonal viscous flux (harmonic.visc.).
881     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
882       of tutorial_plume_on_slope.
883    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
884    o calc_gw: true flux-form, account for horizontal grid spacing.
885      update rotating_tank results, but not plume_on_slope (affected at
886      truncation level, 11 digits).
887    
888    checkpoint58l_post
889    o calc_gw:
890     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
891     - remove side-drag for now (need to fix it); update plume_on_slope results.
892     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
893    o commit code to make SST/SSS weights spatially variable
894      (based on either variable in-situ or variable initial T/S weights)
895    o pkg/ecco:
896      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
897        now based on horizontally varying weights wthetaLev, wsaltLev
898      * cost_averagesflags now returns year indices in addition to day, month
899      * sflux balance is performed on annual basis
900        (sflxumm, sfluxmm2, bal_sfluxmm)
901      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
902        including separate counting and multipliers
903    o pkg/rbcs
904      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
905    
906    checkpoint58k_post
907    o testreport:
908     - always build in dir. "build" (if not there, mkdir build instead of building
909       & running in input)
910     - run in dir run (if it exists), in build otherwise.
911     - call prepare_run (if input/prepare_run exists)
912     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
913    o pkg/exf modifications to interpolation and rotation routines for more
914       reasonable treatment of North Pole singularity: for tracers North Pole
915       value is set to northernmost zonal-mean value, for zonal velocity it is
916       set to zero, and for meridional velocity it is set to northernmost value.
917    o pkg/exf/exf_check_range.F
918     - add tile index to diagnostics and move stop statement to the very
919       end of the routine.
920    o pkg/diagnostics: (diagnostics_main_init.F)
921      define title of isomorphic variables according to the current config.
922    o pkg/thsice with pkg/seaice dynamics:
923    - fix domain of computation (interior only, required for exf) and do exchanges
924    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
925    o towards a standard way of dealing with multi-threading in MONITOR
926      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
927    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
928       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
929    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
930    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
931    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
932       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
933    o tracer advection:
934     - clean-up and simplify calc_common_factors.F
935     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
936       advection subroutine (but still not used within DST advection S/R)
937    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
938    
939    checkpoint58j_post
940    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
941      from file (collects calls previously in FORWARD_STEP)
942    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
943    o adjoint store dir. adjusted accordingly
944    o genmake2
945      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
946    
947    checkpoint58i_post
948    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
949      on wind stress (SEAICEstressFactor defaults to 1.)
950    o Total number of Timers is finite (<=40): comment out 2 non-essential one
951      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
952    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
953      on CS-grid: no longer loosing mass.
954    o exf & curvilinear-grid: no longer modify longitude xC & xG.
955    o pkg/ggl90: fix sloppy output and fix a bug
956    o pkg/seaice: added SEAICEuseEVPpickup parameter
957      - Set to false in order to start EVP solver with
958        non-EVP pickup files when using SEAICEuseEVP
959      - fix sign error in diffusion in seaice_calc_rhs
960    
961    checkpoint58h_post
962    * Modifications for bottom topography control
963      o replace hFacC by _hFacC at various places
964      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
965      o add non-self-adjoint cg2d_nsa
966      o update autodiff support routines
967      o re-initialise hfac after ctrl_depth_ini
968      o works for 5x5 box, doesnt work for global_ocean.90x40x15
969    * Adding verification for 5x5 box (4-layer) bottom topography control
970    
971    checkpoint58g_post
972    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
973       used for mean seasonal cycle, mean diurnal cycle); add an example
974       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
975    o pkg/ggl90:
976      - add parameter (minimum surface kinetic energy)
977      - fix bug (avoiding division by zero)
978    o couple pkg/thsice to pkg/seaice:
979      - modify advection in seaice to accomodate new scalar fields to be advected
980      - only muliDimAdection scheme work with seaice/thsice
981      - mapping of thsice-variables to seaice-variables, back and forth
982      - does not break the verification experiments, but does not give the
983        desired results either
984    o pkg/seaice
985      - make (default) second order advection a bit less confusing?
986    
987    checkpoint58f_post
988    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
989      to pkg/seaice):
990      - new routines thsice_map_exf and thsice_get_exf provide the interface
991      - add an additional formal parameter to thsice_solve4temp
992    o pkg/exf:
993      - add new fields wspeed, snowprecip (to be able to couple to thsice)
994      - correct Stefan-Boltzmann constant
995      - new parameter for longwave surface emittance
996      - separate some stuff from exf_bulkformulae into new routines  
997        exf_radiation, exf_wind
998      - add new parameters and constants: longwave emissivity for ocean, ice
999        and snow, evaporation parameters over ice
1000      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1001        either wind from stress or stress from wind
1002    o pkg/thSIce:
1003    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1004    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1005       and THSICE_CALC_THICKN
1006    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1007    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1008      to make debugging easier.
1009    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1010    o pkg/bulk_force:
1011      - clean-up comments and parameters ;
1012      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1013    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1014      generate new output for test-experiment: aim.5l_cs.thSI
1015    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1016      testreport accordingly
1017    
1018    checkpoint58e_post
1019    o SEAICE_CGRID adjoint done
1020    o R_STAR adjoint implemented.
1021      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1022      * need to sort out init. of h0facc, etc.
1023    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1024      to be able to use it in pure forward.
1025    
1026    checkpoint58d_post
1027    o upgrade simple test-experiment to tutorial example:
1028     step.1: duplicate the experiment and (step.2) will remove the old copy.
1029      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1030      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1031      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1032      tutorial_global_oce_biogeo    <- copy of dic_example
1033      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1034      tutorial_plume_on_slope       <- copy of plume_on_slope
1035      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1036      tutorial_global_oce_optim     <- empty for now (David ?)
1037      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1038     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1039    o correct a sign problem in cost_scat.F
1040    o obcs and ptracers: fix boundary conditions for advections schemes
1041      with larger stencil
1042    o thsice adjoint: start
1043    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1044      completeness
1045    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1046      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1047    o ptracers adjoint:
1048      * avoid extensive recomputatations
1049      * fix missing re-init. of gptr (missed by TAF)
1050    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1051      me to turn off the excessive output to STDOUT that this package produces
1052    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1053      and add those terms in Vector-Invariant formulation.
1054    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1055      if the control period (xx_hfluxperiod etc) is 0
1056    o in profiles pkg, clean routines and fix details
1057    o in ecco pkg, reading ssh data:
1058      fix problem in case the model does not start at iter0=0
1059    o fix mnc-pickup/restart for ptracers
1060    o new package prifiles:
1061      code to compute profile-based cost by Gael Forget
1062      (modifs in ecco, ctrl, autodiff)
1063    o Benign bug fix in initialization (spotted by M. Mazloff) of
1064      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1065    
1066    checkpoint58c_post
1067    o adjoint: finish NLFS adjoint and provide reference output in
1068      verification/global_ocean.90x40x15/results_ad_nlfs
1069    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1070      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1071      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1072      with SEAICE_CGRID defined.
1073    o move calendarDumps from "data" to "data.cal" and clean-up the code
1074      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1075    o add useEXF & useCAL flags (for now, set in hard-coded way)
1076    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1077      (were missing in NH mode, and wrong in quasihydrostatic mode).
1078      waiting for Chris updated version of calc_gw to add those CALLs.
1079    o fix bug in quasihydrostatic S/R ;
1080      add a test for this option: global_ocean.90x40x15.qshyd
1081    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1082      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1083    o add on/off flag useOffLine for package OFFLINE
1084    o seaice:
1085      - modify advection so that it works also on the C-grid
1086      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1087        problem in multi-tile runs with C-grid
1088      - add flags for clipping ice velocities and/or masking solver forcing
1089      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1090        C-grid solver
1091      - added a few comments to seaice_diffusion.F
1092      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1093        are now exclusive)
1094      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1095        required re-ordering the code a little:
1096       + make DAIRN global variable (defined in SEAICE)
1097       + move computation of the viscosities eta and zeta into a new separate
1098         routine (because I need to recompute them in seaice_ocean_stress.F)
1099    
1100    checkpoint58b_post
1101    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1102      update output.txt of exp. aim.5l_cs.thSI
1103    o various mnc cleanups and improvements:
1104      + shrink lookup tables by factor of ~4
1105      + better error reporting when running out of lookup space
1106      + able to handle longer path/file names (up to 500 chars)
1107    o adjoint:
1108      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1109      - TBD: "hidden" mom_vecinv recomp. in dynamics
1110    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1111     (allow to differentiate between forcing components using new integer flags:
1112      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1113     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1114    o ecco
1115      - enable trend removal from SSH anomaly obs.
1116    o adjoint
1117      - a fix for PmEpR when #undef EXACT_CONSERV
1118      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1119      - try to fix "hidden" recomp. in forward_step for NLFS
1120        (NLFS seems broken sometimes after I checked it in)
1121    o seaice:
1122     - add c-grid version of the dynamic solver:
1123       + three new routines that are the c-grid substitute lsr, dynsolver
1124         and ostres
1125       + put a few fields that were local to dynsolver into global common
1126         blocks, so that I can move the computation of stresses etc into
1127         seaice_lsr (saves coding but may break the adjoint).
1128     - replace more hardwired parameters by runtime parameters
1129     - add ice masks that mask the rhs of the implicit solvers where there
1130       is no ice (commented out in seaice_dynsolver, because i am not sure
1131       if this works properly), eventually this should replace the clipping
1132       of ice velocities in seaice_dynsolver to +/-40cm/s.
1133    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1134      include it only where its needed
1135    o move balancing of fluxes before the call of external_forcing_surf
1136    o seaice:
1137      - correct units of turning angles (now they are really in degrees)
1138      - move computation of GWATX/Y out of main routine into dynsolver
1139      - initialize GWATX/Y in seaice_init
1140    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1141      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1142    o seaice: add runtime flags for turning angles (default to zero)
1143    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1144      and trend from exf forcing and ctrl control adjustments
1145    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1146      (since checkpoint57x_post)
1147    o change the default rotation period to 86164.s = the Earth rotation
1148    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1149      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1150    o seaice advection: add code for choosing between the default (2nd order
1151      central differences) and multiDim advection schemes provided by
1152      pkg/generic_advdiff
1153    o seaice:
1154      - removed all references to SEAICE_GRID.h fields from
1155        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1156        (cubed-sphere configuration will change a little)
1157      - grid computations in seaice_init are obsolete now.
1158      - cleaned up code a little so that is easier to read (hopefully).
1159      - added new (better?) discretizations of default advection and diffusion
1160        (turn on with SEAICEuseFluxForm)
1161      - replace 1 in 3d global fields by kSurface in growth.F
1162      
1163    checkpoint58a_post
1164    o seaice:
1165      - bug fix in advect.F
1166    o shelfice:
1167      - separate shelfice load anomaly from pload (breaks with time
1168        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1169        Its default is 0., but it may be computed more cleverly from (unknown)
1170        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1171        done offline. A good approximation of the pressure load anomaly is
1172        necessary to avoid large initial adjustment processes underneath
1173        deep-reaching shelfice.
1174      - small fix in ISOMIP shelfice_thermodynamics
1175      - add more sophisticated thermodynamics of Hellmer (1989), this is
1176        now the default
1177      - give a few constants more intuitive names
1178    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1179      if bulk formulae are used in long integration (especially EmPmR). Turn
1180      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1181      if balancePrintMean, the imbalance that is substracted is printed to
1182      STDOUT.
1183    o fix bug (typo) in obcs_apply_eta.F
1184    o add a new package shelfice which enables us to model the circulation
1185      underneath shelf-ice with draughts of hundreds of meters.
1186     - works
1187     - to do: + include improved thermodynamics
1188              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1189                instead of new field kTopC
1190              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1191                instead of new field R_shelfIce and new code in ini_depth.F
1192                and ini_mask_etc.F?
1193              + adjust vertical mixing schemes?
1194    o seaice pkg:
1195     - add a cpp-flag to include a simple formula for a salinity dependent
1196       freezing point of sea water at the surface
1197     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1198       meridional stresses are now different (and hopefully correct)
1199    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1200       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1201       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1202    o pkg/diagnostics: add options and parameters for regional-statistics
1203       diagnostics ; define regions by reading a region-mask from a file
1204       (might add other options later)
1205    o pkg/bulk_force:
1206     - add option and parameters to use AIM surface-flux formulae.
1207     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1208       others forcing fields (defined in PARM05, parameter file "data") are loaded
1209       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1210     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1211     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1212     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1213       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1214     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1215    
1216    checkpoint58
1217    o add "--embed-source" option to genmake2 which, when the supporting
1218      tools can be compiled (as determined by genmake2) will turn on the
1219      embed_files package which then embeds the entire MITgcm source code
1220      (*.[fFhc] + Makefile) used for the build within the executable
1221      - requested by CNH but off by default
1222      - adds a paltry <9MB to the mitgcmuv executable in most cases
1223      - only writes the output when useEMBEDSRC in eedata is true
1224    o clean up 3-dim. relaxation codes:
1225      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1226      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1227      * Thanks to Tom Haine for testing!
1228    
1229    checkpoint57z_post
1230    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1231      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1232    o fix the pickup behavior for obcs in combination with ptracers
1233    o fix a bug in ptracers_external_fields_load
1234    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1235      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1236    o transfered surface NH pressure to eta field (if exactConserv).
1237    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1238         and update lab_sea output.txt file.
1239    o completing 3-dim. relaxation code: additional term
1240         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1241      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1242      * At compile time, in "EXF_OPTIONS.h" set
1243          #define  ALLOW_CLIMTEMP_RELAXATION
1244          #define  ALLOW_CLIMSALT_RELAXATION
1245      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1246          tauThetaClimRelax3Dim = 15552000.0,
1247          tauSaltClimRelax3Dim  = 15552000.0,
1248      * 3 cases:
1249          1) Use a constant-in-time 3-dim. field
1250          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1251          3) Real-time relax. to time-evolving prescribed field
1252    o Adding Laplacian-type smoothness constraint on
1253      initial and boundary (forcing) controls (ic, bc)
1254      * enable at compile-time via
1255        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1256      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1257      * Absolute scale somewhat unclear so far
1258      * no area weighting was included since no other cost term does so far
1259    
1260    checkpoint57y_post
1261    First step for a NLFS adjoint
1262    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1263    o new init. routines for calc_r_star, calc_surf_dr
1264    o still need to deal with ini_masks_etc
1265    o testreport seemed happy
1266    checkpoint57y_pre
1267    
1268    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1269    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1270    o add new offset feature to offline pkg (plus minor cleanup)
1271    o cfc fixes for final year of integration
1272    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1273      be in GCHEM_OPTIONS).
1274    
1275    checkpoint57x_post
1276    o fix testreport Pb in multiple test experiment.
1277    o cleanup our namelist syntax in verification:
1278      - make it more F95 standards compliant (some work still needed)
1279      - allows the vast majority of our tests to work with gfortran
1280    o Non-Hydrostatic:
1281     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1282     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1283    o Allow to apply AB on T,S rather than on AB(gT,gS):
1284     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1285     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1286       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1287     - need a "clever" read_pickup to restart from the other AB formulation
1288    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1289    o remove some unused variables (reduces number of compiler warnings)
1290    o adjoint
1291      * Disable useVariableViscosity for adjoint for time being
1292        (there are a number of extensive recomputations)
1293      * Initialize certain variables needed for adjoint
1294    
1295    checkpoint57w_post
1296    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1297                 fix the singleCpuIO RS version of MDSWRITEFIELD
1298       and add a WARNING if using globalFiles=T with multi-processors.
1299    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1300      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1301    o tracer advection scheme:
1302      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1303       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1304       was not very convenient).
1305      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1306       (further tests needed for the implicit DST & Flux-Limiter schemes).
1307    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1308      and sRef for convenience, handy, when you want to initialize
1309      ptracers in a large domain with a constant non-zero value. Also,
1310      untangle ptracers_init.F a little.
1311    
1312    checkpoint57v_post
1313    o change dome exp. to use variable viscosity in side-drag terms.
1314    o remove all the files from the cfc_offline test since they are now
1315      incorporated into tutorial_cfc_offline which has been producing
1316      identical results for a few days of testing
1317    o add new parameter: sideDragFactor to enable half-slip-side BC
1318      and change side-drag S/R to use viscosity from mom_calc_visc
1319      (can switch back by setting sideDragFactor=0.); affects results at
1320      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1321       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1322    o vorticity & strain are now computed without masking, to account for
1323      no-slip-side BC in variable viscosity calculation ; mask is applied
1324      anyway later on, before computing advection/coriolis terms.
1325    o modify exp4 to test new obcs support for reading from external files
1326      and for passive tracers
1327    o fix behavior of ptracers_monitor when monitor output is written to a
1328      netcdf-file; still not independent of monitor.F (writes in the same
1329      file).
1330    o change default value of tRef (put a uniform, meaningful value for ocean
1331      & atmos) and initialize sRef (was missing, as Martin mentioned).
1332    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1333      to be proportional to enstrophy dissipation length.  Thus,
1334       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1335      This is now consistent with Smagorinsky and with the manual.
1336    
1337    checkpoint57u_post
1338    o OBCS and PTRACERS: add open boundary support for passive tracers
1339      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1340        OB-values from file; this is not different from the way theta and salinity
1341        are treated
1342      - however, Orlanski-radiation conditions are not supported, and the model
1343        will stop if you use pTracers and Orlanski at the same time.
1344      - beefed up the rountine obcs_external_fields_load: now only those open
1345        boundary values are overwritten with values from files for which there
1346        are really files, otherwise the OB-fields remain untouched. This makes
1347        it possible to use different OBs at different ends of the domain (as
1348        with EXF)
1349    o reduce number of exch calls in shap_filt (s2).
1350    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1351      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1352    
1353    checkpoint57t_post
1354    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1355    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1356      same truncation, independent of the face number: affects affects several
1357      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1358    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1359      note that biharmonic viscosity + no-slip was not tested in any experiment.
1360    o fix bug in non-linear free-surf side-drag ; generate new output for
1361      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1362    o make mnc honor the writeBinaryPrec flag for most kinds of output
1363    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1364    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1365      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1366    o add brackets in multi-terms sum to get same truncation, independent of
1367      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1368      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1369    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1370      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1371      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1372      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1373      Suggested values of viscosity parameters found in mom_calc_visc.
1374      Many new viscosity diagnostics available.
1375    
1376    checkpoint57s_post
1377    o Add clearing-house for viscosity calculations, mom_calc_visc and
1378      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1379      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1380      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1381      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1382      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1383      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1384      ViscAhStrain and viscAhTension are now retired.
1385    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1386    o In response to JMC's bug report, genmake2 now ignores any soft-links
1387      that it finds in the *current* directory when searching for files.
1388      Soft-links found in any other source directories will still work as
1389      they did before.
1390    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1391      a C routine to unlimit the stack size
1392    o mnc-ify pkg/aim snapshot vars
1393    o mnc-ify pkg/land as requested by Daniel
1394    o various changes to mnc including:
1395      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1396      - output can now be grouped so that all files within a group
1397          change the ITER portion of their names in lock-step together
1398      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1399          and works with both EXCH1 and EXCH2 (but needs more testing)
1400      - writing works for all verification test cases w/ g77 on Linux
1401    
1402    checkpoint57r_post
1403    o make MNC variable initialization happen earlier
1404    o add diagnostics for (almost) each term of the momentum Eq.
1405    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1406    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1407    o remove MINIMAL_TAVE_OUTPUT option ;
1408      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1409    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1410      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1411    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1412    o add time-dependent SST, SSS control
1413    o cost terms in ecco/ modularized (new cost_generic.F)
1414    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1415    o new infrastructure for seaice model vs. obs misfits in seaice/
1416      * driver from the_main_loop.F is seaice_cost_driver.F
1417      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1418      * gradient check in Exp. 6a of natl_box_adjoint/
1419    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1420      (see README file)
1421    
1422    checkpoint57q_post
1423    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1424    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1425      - bug was reported by Jean-Michel and Ian Fenty
1426    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1427      update exp. cpl_aim+ocn output.
1428    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1429      Needed for high-res. runs with large global files
1430      to be able to limit tapelev size
1431    o Changed some tests for adjoint:
1432      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1433      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1434      * global_ocean.90x40x15/ back to default 3-level checkpointing
1435    o Modifications to enable scripted COMMON to MODULE conversion
1436      * verification/OpenAD/code/ has necessary scripts and description;
1437      * converts, compiles and runs successfully;
1438    
1439    checkpoint57p_post
1440    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1441    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1442      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1443    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1444    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1445      (was already the case for dissipation with mom_vecinv,
1446       and also the case for grad.PhiHyd when staggered-timeStep)
1447      This will allow to put dissipation out-off the AB time-stepping.
1448     Unfortunately, affects truncation error. Update output of exp. that "fails"
1449      (cg2d matching number) and leave the others for later: front_relax(10),
1450      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1451      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1452    
1453    checkpoint57o_post
1454    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1455      (2) its ready to be documented during the 20050801 DocFest
1456    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1457      for ideal_2D_oce and lab_sea on linux_ia32_g77
1458    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1459      in global1x1_tot/code_seaice_adj to access indices 32, 33
1460      (worth another tag)
1461    
1462    checkpoint57n_post
1463    o adding precip control xx_precip 32
1464    o adding swflux control xx_swflux 33
1465    o Replacing 10 forcing penalty cost routines by 1 generic.
1466    o Implementing partitioning in time-mean and variable adjustment
1467      for atmos. state.
1468    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1469  o in natl_box_adjoint:  o in natl_box_adjoint:
1470    * updated: results_bulk/    * updated exp 1 to 10
1471    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1472    o updated global1x1/*_seaice_adj/
1473      to incorporate latest changes
1474    o enable useSingleCpuIO for mdsio vector routines
1475      (applies in particular to tapelev I/O)
1476    o removed inefficient K-loop in all active_file*control*.F
1477    
1478  checkpoint57m_post  checkpoint57m_post
1479  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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