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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.971 by jmc, Sun Apr 6 02:05:05 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 change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
8  o moved ptracer ctrl index 17 -> 32    + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
9    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
10      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
11    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
12     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
13       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
14    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
15       scheme to use for vorticty-term ;
16     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
17       (with default selectVortScheme, return to original discretisation)
18     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
19    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
20    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
21      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
22      also fix diagnostics VISCAHW & VISCA4W.
23    
24    checkpoint59o
25    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
26    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
27      move a few statemens out the main loop into separate loops
28    o pkg/shelfice:
29      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
30        (kg/m^2/s), does not break tests, because in verification/isomip,
31        rhoConstFresh=rhoConst (by accident)
32      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
33      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
34        new file model/src/seawater.F, so that they are available for all pkgs.
35      - convert potential temperature into in-situ temperature. This changes the
36        isomip tests => update tests
37    o add a flag writePickupAtEnd (default=true) to be able to suppress
38      writing a pickup at the last timestep
39    o tools/mpack-1.6 :
40      - disable automake (not working) and autoconf (not needed).
41      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
42        also cleaner with much less compilation warnings.
43    o pkg/profiles:
44      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
45      (for "less than 32 characters name" compiler requirement)
46    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
47      conditions that have a different sampling frequency than S/T/U/V obcs
48    o pkg/diagnostics (stats-diags):
49      - fix global Min/Max in case 1 processor get only empty tiles
50    o genmake2: replace (4 times)
51         make genmake_tc_1.o >> genmake_warnings 2>&1
52      with
53         COMM="$CC $CFLAGS -c genmake_tc_1.c"
54         echo $COMM >> genmake_warnings
55         $COMM >> genmake_warnings 2>&1
56      to make genmake2 always see the value of CC as specified in the optfile.
57    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
58      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
59      - modify verification advect_cs test to test SOM-advection on CS-grid.
60    o pkg/ctrl:
61      - Rewrite of ctrl_map_ini_ecco.F,
62        introducing a generic routine (ctrl_map_ini_gen.F).
63      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
64    
65    checkpoint59n
66    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
67      number in dedicate array "hdiag":
68      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
69        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
70      - many small changes (integer format) for large number of diagnostics
71      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
72        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
73    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
74      usingSphericalGrid, this allows to define the rotated grid coordinates
75      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
76      geographical coordinates according to the inverse of the rotation defined
77      by the Euler angles, so that Coriolis parameter and online-interpolation by
78      exf works with the geographical coordinates on XC/YC/XG/YG.
79      Naturally, this feature does not work with all packages, so some
80      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
81      profiles), because there the coordinates are assumed to be regular
82      spherical grid coordinates.
83    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
84      - introduce isopycnal diffusion coefficient control.
85    o tools/adjoint_options:
86      - additional control vector components.
87    o pkg/mnc: have mnc create marginally meaning full coordinate variables
88      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
89    o pkg/mypackage:
90      - add example of read/write pickup for state-var ;
91      - add entry points to the main code for state-vars diags & write-pickup.
92    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
93      transitions for useExfYearlyFields
94      - add new subroutine that determines the file to read from for
95        use*YearlyFields = .TRUE. and .FALSE.
96      - add a verification experiment to global_with_exf that tests
97        useExfYearlyFields with USE_EXF_INTERPOLATION defined
98    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
99      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
100      subroutines (which could be generated from a template, because they are
101      almost identical), for now they are included in obcs_prescribe_read.F for
102      simplicity
103    o pkg/exf:
104      - add a little more diagnostic to exf_interp_read (in analogy to
105        mds_read_field, can be turned off with debugLevel < debugLevA=1)
106      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
107        ugly but fast by unrolling short inner loops, inserting a unroll=8
108        directive in routine lagran, and splitting a loop and making do while the
109        outermost loop (the latter requires the intoduction of index arrays)
110    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
111    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
112      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
113    o verification/seaice_obcs: updated for restart test and latest options
114    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
115      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
116      for now this is only available for the C-grid code and also within
117      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
118    
119    checkpoint59m
120    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
121      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
122    o gad_som : fix flux output (& diagnostics) to have same units as other  
123      advection scheme fluxes (was previously multiplied by deltaT).  
124    o added verification/seaice_obcs both to test seaice open boundaries
125      and to provide an example matlab scrpt for generating them
126    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
127    o pkg/salt_plume: clean up salt_plume_frac.F to
128      remove redundancy in PlumeMethod 1 and 4
129    o pkg/kpp: added saltplume diagnostics
130    o pkg/obcs and pkg/seaice:
131      - do not set uice and vice to zero when OB*icefile are unspecified
132      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
133      - moved seaice tracer obcs after call to seaice_growth
134    o pkg/salt_plume: added various options for salt plume depth
135      criterion and for vertical distribution of the salt
136    
137    checkpoint59l
138    o pkg/ptracers: new version of ptracers pickup:
139      read meta file and write only fields which are needed to restart.
140      ( same logic as main pickup file ; also using pickupStrictlyMatch )
141    o pkg/seaice:
142      - add timescale for melting due to warm mixed layer as a means of
143        setting SEAICE_availHeatFrac more conveniently
144      - add a CPP-flag/runtime parameter check for flooding algorithm
145      - reformulated availHeat in seaice_growth.F to be independent of AREA
146    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
147      unit changes
148    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
149    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
150      SX vector computer.
151    o pkg/seaice:
152      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
153        seaice forcing fields can now be read only through pkg/exf
154      - removed some unused halos
155    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
156    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
157      or U/VICE from U/VWIND before computing U/VSTRESS
158    
159    checkpoint59k
160    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
161      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
162    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
163      all experiments pass when compile with un-initialised var. checking option.
164    o added pkg/salt_plume
165    o script to test restart (for now, in MITgcm_contrib/jmc_script)
166    o pkg/seaice: new read/write pickup version.
167      read meta file and write only fields which are needed to restart.
168      ( same logic as main pickup file ; also using pickupStrictlyMatch )
169    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
170    o lab_sea.hb87: modify the domain & update output.hb87.txt :
171      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
172      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
173      process. Fixed here by closing the domain at the Northern boundary.
174    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
175    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
176      a set of consecutive levels in/from a 3-D array.
177    o pkg/ptracers:
178      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
179      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
180    
181    checkpoint59j
182    o in pkgs: dic, obcs, offline, rbcs:
183      standard way to compute coeff. for time interpolation between 2 time reccords
184      which retains full precision (& make results less dependent on compiler).
185      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
186    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
187      packages instead of reading ice cover and wind speed separately
188    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
189     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
190      to allow to compile customized code before the update)
191    o cleaning-up:
192      - fix CPP instruction syntax in pkg/obcs
193      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
194        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
195      - fix some threads issue in IO parts.
196    o pkg/dic:
197      - add tons of "_d 0" (--> much better testreports !)
198       and then update outputs of tutorial_global_oce_biogeo
199    o pkg/mom_fluxform:
200      add a special version of momentum advection intended to conserve momentum
201      next to a bathymetry step or a coastline edge. (default = off = #undef)
202    o new read/write pickup version:
203      - for now, only implemented for main (mdsio) pickup file.
204      - write out only what is needed to restart; merge pickup_nh , pickup_ph
205        and main pickup together.
206      - read meta file; read only what is needed to restart; stop if a field
207        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
208        if it make sense (even if the restart is not perfect).
209      - if no meta file, assume that pickup to read corresponds exactly to
210        a pickup that would currently be written.
211      - read pickup written in the old format (until checkpoint59i) if it
212        recognizes an old meta file (no field-list).
213      - add a meta file in exp. which starts from a pickup: 2 cases:
214        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
215         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
216        b) a meta file describing the content of the associated pickup file
217         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
218    o pkg/mdsio & pkg/rw:
219      - new routine to read a meta file ; new set of routine to read
220        Multiple-fields file (with meta file).
221    o added open boundary conditions capability for seaice
222        HSNOW, HSALT, UICE, and VICE
223    
224    checkpoint59i
225    o adjoint:
226      * fix multiDimAdvection adjoint
227        (partial recomputation problem by TAF for fVerT(:,:,kDown)
228        and comlev1 size definition (maxpass vs. max. number of tracers)
229      * verification/global_ocean.90x45x15 adjoint now tests
230        NLFS and multiDimAdvection using DST3 (=30)
231      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
232    o pkg/kpp: add "_d 0" to real constant (if missing);
233      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
234      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
235    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
236      for internal parameters related to restart process (formerly from PARAMS.h)
237      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
238    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
239      as argument. (only atm2d & obcs write_pickup have not yet been updated)
240    o pkg/monitor:
241      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
242      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
243      - account for deep Atmosphere factor and density factor (anelastic)
244    o added open boundary conditions capability for seaice HEFF and AREA
245    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
246      thermodynamics
247      - requires a little reorganization, which affects the testreport results
248        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
249        so that now the conservative form is tested
250      - add a few comments
251    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
252    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
253    o add new diagnostics to seaice: advective, diffusive fluxes (only for
254      multidim-advection, for scheme 2 they are not filled) and transports,
255      thermodynamic growth rates
256    o change units of EmPmR (inside the code, + within coupling interface)
257      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
258      Affects results @ truncation level (cg2d match) and update output of
259       experiments: lab_sea(6), global_ocean.90x40x15(10),
260      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
261      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
262      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
263      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
264    
265    checkpoint59h
266    o pkg/exf:
267      - improve vectorization by moving if-statement out of loops in
268        exf_mapfields, exf_radiation
269      - exf_bulkformulae.F: introduce 2D fields and vectorize code
270    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
271    o testreport:
272      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
273        monitor & update offline_exf_seaice exp. output.
274      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
275    o pkg/seaice:
276      - bug fix in the evp solver: boundary conditions were affected be
277        masking of zMax/zMin (changes results)
278      - minor bug fix in boundary conditions in seaice_calc_strainrates
279        (changes results for no_slip)
280      - seaice_lsr.F: make interpolation of eta dependent on boundaries
281      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
282      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
283        stress formulation and no-slip boundary conditions
284    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
285      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
286    o pkg/seaice: a first HSALT time stepping equation has been checked in
287    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
288      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
289      without requiring DO-IF statements
290    o pkg/thsice:
291      use continuous power-law function for partition of energy between lateral
292      melting/freezing and thinning/thickening ; old code using step function
293      still available with #undef THSICE_FRACEN_POWERLAW
294      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
295    o testreport: change AD testing : check against results/output_adm.txt
296      using same scripts as for forward test.
297    
298    checkpoint59g
299    o adjoint testing: in preparation for changing testreport:
300      - output format: cost and grad written on separated lines
301      - ad output results in directory "results" (instead of "results_ad")
302    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
303    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
304    o pkg/ecco: allow user defined cost function contributions
305    o testreport:
306      Allow to choose (per experiment) the list of tested output variables
307       and the main variable (used to issue a pass/FAIL ) ;
308      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
309      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
310      Also modify printing of summary:
311       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
312       b) echo the list of tested variables in the individual summary.txt of
313          each experiment.
314    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
315      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
316      (but still depend on the tile decompostion of the domain).
317    o pkg/seaice: change a discretization detail to make the B-grid code
318      "more symmetric". This change is likely to remove all "ridges/leads" that
319      where quasi-aligned with the grid in B-grid solutions. It may also be
320      the solution to the stress coupling issues with the B-grid.
321    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
322      remove .cvsignore from input dir. (since testreport no longer run here).
323    o pkg/thsice:
324     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
325     - fix reshaping of sea-ice just after advection:
326       melt all the ice only if ice-volume is too small.
327     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
328       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
329     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
330    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
331      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
332    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
333      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
334      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
335      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
336      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
337      -> update output.txt
338    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
339     this affects truncation error: -> update output.txt of exp:
340      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
341      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
342    
343    checkpoint59f
344    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
345    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
346      a bounded range (in forward mode)
347    o pkg/ecco, ctrl, autodiff and mom_common:
348     internal parameter controls, completements of implementations
349    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
350    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
351      (not seem any difference in testing results).
352    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
353       at face corners.
354    o pkg/generic_advdiff:
355     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
356      loop range indices for computing vertical advection tendency
357      and do the calculation in the interior only (no overlap) ;
358      for now, only implemented for SOM advection (to save CPU time).
359     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
360    o exch2 adjoint
361      First set of changes:
362      - add exch2 hand-written adjoint templates
363      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
364        This will require cleanup in pkg/autodiff/*.F
365        (changed routines currently kept separate in verif. code/)
366      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
367        that used to hide exch2 or cubed-sphere specific code
368        (commented via 'cph-exch2')
369    o pkg/seaice
370      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
371    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
372       output of global_ocean.cs32x15.thsice .
373    
374    checkpoint59e
375    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
376      for B-grid vector (not yet tested) and C-grid vector (<- only used
377      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
378    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
379      (#ifdef ALLOW_SALT_PLUME)
380    o gather_2d/scatter_2d: removed halo regions
381    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
382      scheme and the corresponding test case (under front_relax dir). For now,
383      only available with Skew-flux form and not yet tested in realistic set-up.
384      adjoint: store directives updated, but gradient checks deteriorated,
385      so maybe GM/Redi adjoint is now broken.
386    o seaice adjoint
387      * add AREA, HEFF, HSNOW as control variable
388        (should not change lab_sea results)
389      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
390    o pkg/seaice:
391      * added computation of saltFlux in seaice_growth;
392        For time being, sea ice salinity is assumed constant
393        contribution of snow flooding to freshening of sea ice is neglected.
394        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
395        defaults to 0.0 in order to maintain backward compatibility.
396        Typical values for SEAICE_salinity are 4 to 10 g/kg.
397      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
398      * added SEAICE_availHeatFrac, which specifies fraction of surface level
399        heat content used to melt or grow ice
400      * commented out cap of HICE: it helps keep ice thinner
401      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
402      * applied OBCS T/S mask to HEFFM sea ice mask
403    
404    checkpoint59d
405    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
406     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
407     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
408    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
409     and change default value of parameter "GM_Small_Number";
410     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
411       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
412       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
413    o pkg/ecco: cost function when applying pkg/smooth to controls
414    o pkg/ctrl: add forcingPrecond run time parameter
415    o pkg/seaice:
416     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
417     - fix bug in metric terms of u-equation in LSR solver (implicit part),
418       changes verification/lab_sea
419     - rearrange implicit part of u-equation in LSR solver to make it easier to
420       read, understand, and debug. This causes changes at the truncation level.
421     - fix (serious) bug in the boundary conditions (sign error in the implicit
422       part) of the LSR solver. Changes all LSR results.
423     - fixed problem with HSNOW initialization to avoid thick snow when AREA
424       is initilized with small values - does not change lab_sea results.
425     - added HsnowFile initialization capability
426    o pkg/smooth: addition to model/src and pkg/ctrl so allow
427     initialization of pkg/smooth and application to control vector
428    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
429    o dependencies: pkg/profiles requires pkg/cal
430    o pkg/profiles:
431     - added option ALLOW_PROFILES_GENERICGRID
432         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
433         that interpolation information (grid points and coefficients) is provided
434         within the netcdf input files.
435         -> sample matlab scripts can be found in MITgcm_contrib/gael
436         that allow you to prepare netcdf input files.
437     - also modified: cleaner include statements, cleaner error print statements,
438       cleaner stops when error, and more tests of the netcdf input files consistency.
439    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
440    o pkg/seaice:
441     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
442       requires a new routine: seaice_diagnostics_fill.F
443     - make sure that seaice does not move if not forced (pressure replacement
444       method, Hibler and Ip, 1995), changes results
445     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
446     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
447       It is turned off by default (=-1.), because it changes the results.
448     - make it possible to read AREA from a file, too.
449    
450    checkpoint59c
451    o add S/R and diagnostics for oceanic mixed-layer depth
452    o move GMRedi call after all vertical mixing schemes (including KPP)
453    o pkg/thsice:
454     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
455      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
456    o pkg/obcs:
457     - bug fix for balance code
458    o pkg/seaice:
459      - allow values of SEAICE_elasticParm > 1
460      - add new parameter SEAICE_evpTauRelax as an alternative
461        to SEAICE_elasticParm
462      - make lsr boundary conditions free slip (by default), changes result
463      - add code for no slip boundary conditions for lsr
464      - set minimum of zeta to zero (and not 4e8) (changes results)
465      - add a cap on AREA after advecting AREA if seaice_growth is not called
466    o change calculation of Visbeck K:
467      - no longer depend on tapering scheme; instead, compute slope (limited
468        by GM_maxSlope). this is equivalent to what was comuted before with
469        clipping or linear tappering.
470      - fix vertical averaging (wrong by 1/2 level)
471      - leave the old version (but will not be maintained) within
472        #ifdef OLD_VISBECK_CALC / #endif
473      - update output of exp. ideal_2D_oce
474    o change error catch in calc_r_star to improve vectorization
475    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
476      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
477    o adjoint:
478      Re-organized adjoint checkpointing according to Matt Mazloff
479      (but with modifs/completions/cleanups)
480      Storing is now bundled into large arrays to optimized I/O
481      (and second step in cleanup of the_main_loop)
482    
483    checkpoint59b
484    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
485      - export/import (between ocean & coupler) fields needed for ocean DIC.
486    o pkg/seaice:
487      - get rid of three more exchanges seaice_calc_viscosities (required
488        different loop boundaries in seaice_lsr and seaice_ocean_stress)
489      - bug fix in seaice_ocean_stress (update of lab_sea required)
490      - reduce loop boundaries to necessary minimum also in seaice_evp
491      - go back to the old way of computing deltaC/Z as the adjoint likes that
492        better
493    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
494      passive tracer to an Age Tracer) + update output.txt
495    o pkg/exf:
496      - implement A-grid / C-grid selection for wind-stress input files.
497      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
498      for now, in exf_bulk_largeyeager04.F only :
499      - change implementation for case where windspeed + 2. components wind-stress
500        are read-in. AND use rhoConstFresh to convert evap.
501    o pkg/seaice:
502      - use correct EXCH_UV for wind-forcing (on A-grid).
503      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
504        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
505    o pkg/exf:
506      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
507      EXF_INTERPOLATION:
508      - merge global_with_exf/code version of exf_interp_read.F
509        to the main code ;
510      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
511        reading the file ; Important: This options needs to be defined to recover
512        previous code.
513        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
514      - no longer loose real*8 precision along the way when using exf_iprec=64.
515    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
516      - change discretisation of evp-solver in order to avoid another exchange
517        (changes lab_sea) and clean up a little
518      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
519        help the adjoint (this also changes the results slightly)
520      - add a few "_d 0" where they had been missing in seaice_evp.F
521      - cleaning up: remove unused seaice_calc_rhs.F
522    o pkg/exf: some cleaning-up:
523      - change various "constants" into runtime parameters
524      - cleaned-up Large&Yeager04 routine which should eventually
525        replace exf_bulkformulae.F (changed names of S/R and CPP)
526        and merged various ALLOW_ATM_WIND options
527     only used with thsice pkg (in thsice_get_exf.F):
528      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
529        which are used when useStabilityFct_overIce=TRUE (= the default)
530      - change default values of ice & snow emissivity and scale downward LW
531        by ice & snow emissivity.
532    o pkg/thsice:
533     fix few little problems, in thsice_calc_thickn.F:
534      - growth vertically (and not laterally) if iceFrac == iceMaskMax
535      - melt only laterally if hIce < hThinIce (as the comments say)
536      and in thsice_extend.F:
537      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
538      - start to form ice as soon as the minimum ice-volume is reachable.
539     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
540      and cpl_aim+ocn
541    o pkg/kpp
542     - move computation of surface related input fields to KPP into a new
543       subroutine kpp_forcing_surf.F
544     - remove wrong (within bi,bj loops) EXCH calls.
545     - little cleaning (add argument myThid in last position, cvs header ...)
546     - for now, fix conservation problem by exchanging KPPviscAz (may not
547       be the best fix)
548    o pkg/seaice
549     - check for inconsistent evp parameter/cpp-flag combination
550     - remove leftover errIO flat for obsolete name list error handling
551    o OpenAD
552     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
553    
554    checkpoint59a
555    o pkg/seaice: some parameter clarifications and a little bit of clean up
556    o pkg/thsice: rename run-time parameters:
557       himin       -> hIceMin
558       himin0      -> hThinIce
559       hihig       -> hThickIce
560       i0          -> i0swFrac
561       transCoef   -> bMeltCoef
562       frac_energy -> fracMelting
563      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
564       with default values (for now) that do not change the results.
565      remove old version of thsice vars advection in pkg/seaice.
566    o in FFIELDS.h:
567      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
568      - make pLoad & sIceLoad always available (but still only used if
569         ATMOSPHERIC_LOADING is #define).
570    o pkg/kpp: replaced _KPP_RL with _RL
571    o bug fixes for vertical diffusivity computations when both KPP and
572        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
573        are no longer updating the vertical diffusivity array
574        (passed as argument) but are (re-) setting those arrays.
575    o pkg/seaice: fix bug in evp solver, while doing that
576      - change (improve?) discretization of stress computations for both
577        cgrid-lsr and evp solver
578      - add a new routine to compute strain rates
579      - the above changes lab_sea results
580      - add no slip conditions for evp solver (off by default), lsr-version
581        may follow
582      - fix exchange for shear at Z-points (does not change lab_sea)
583      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
584        (to force the user to pick a time step since there is not "safe" way
585        of choosing it)
586      - add principal stress diagnostics
587      - rearrange fields for evp a little to avoid having to call a: too many
588        exchanges and b: exchanges for stress trensor components which we do
589        not have.
590      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
591        of evp, complete rewrite for lsr case (latter is does not yet work
592        in all cases)
593    o pkg/kpp: add code to have mixing in shelf ice caverns
594      - add myThid to all kpp routines (long overdue)
595    
596    checkpoint59
597    o pkg/exf:
598      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
599        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
600      - move exf header files from lower_case.h to UPPER_CASE.h ;
601        add missing cvs Header & Name
602      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
603      - add namelist param. selectStressGridPosition, exf_monFreq
604      - retire many _CLIM routines, and remove data.exf_clim
605        + params moved to data.exf
606        + climsst, climsss now handled by exf_set_gen, i.e.
607          climss?period=0 refers to constant field,
608          climss?period=-12 to monthly forcing
609      - split up namelists in data.exf
610    o pkg/seaice:
611      - remove seaice_exch and seaice_exch_uv
612      - remove superfluous exchange of theta
613      - add myThid to seaice_budget_ocean/ice
614      - add new interface for atmospheric wind forcing (C-grid only)
615        + new routine
616        + two new field (taux, tauy for stress over ice)
617        + removed one global field (DAIRN) for C-grid case only
618    o pkg/thsise
619      - 2nd set of modifs for thsice adjoint in conjunction with exf
620    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
621    
622    checkpoint58y_post
623    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
624      vertical diffusivity, similar to that in MOM4; turned on using
625      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
626      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
627    o Added capability for 3D specification of background vertical diffusion
628      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
629      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
630      "data" file that contains the 3D vertical diffusivity coefficients.
631    o ice dynamics (pkg/seaice) with thsice thermodynamics:
632      - add code within pkg thsice to advect & diffuse sea-ice fields
633      similar to (and will replace) what has been added in  seaice_advdiff.F,
634      but: - conserving Mass, Heat & Salt.
635           - better when using non-linear advection scheme (not yet fully tested)
636           - can also be used in atmospheric set-up (for now, only the diffusion).
637    
638    checkpoint58x_post
639    o IO option for global-file compact format:
640      - add options when generating topology (utils/exch2/matlab-topology-generator)
641      - add I/O capability (pkg/mdsio).
642      - adapt utils/matlab/rdmds.m to read this format.
643      for now long-line format not yet supported by pkg/mdsio (& exch2).
644    o shelfice: add a few diagnostics
645    
646    checkpoint58w_post
647    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
648      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
649      (and replace horiVertRatio in NH code).
650      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
651                         and tutorial_plume_on_slope (sensitive to truncation)
652    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
653      directly to drive seaice model (C-grid only)
654    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
655     - reintroduce computation of wind from stress,
656     - compute tau (in exf_bulkformulae.F) from windstress averaged to
657       mass points to avoid tau = 0
658     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
659    o rdmnc.m: make it work with "global" files created with gluemnc
660    o rdmnc.m : some improvements in dealing with singleton dimension
661      (tested on all testreport mnc output files).
662    o genmake2: disable pkg/profiles if netcdf test fails.
663    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
664    o move call to cal_readparms up to make calendar parameters/variable available
665      to all packages
666    
667    checkpoint58v_post
668    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
669      useDynP_inEos_Zc tested.
670    o pkg/exf: changes to properly interpolate/mask/scale initial fields
671    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
672      and portions thereof.  See read_cs.txt for description and examples.
673    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
674      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
675      following the great-circle arc between those 2 points.
676    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
677      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
678    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
679     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
680     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
681     - still needs work (not working with some options ; efficiency to improve)
682       and serious testing.
683     - use this scheme for temperature & salinity in 2 advection test exp.:
684       advect_xy & advect_xz, respectively.
685    
686    checkpoint58u_post
687    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
688    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
689    o testreport: add option "-skipdir" to skip some test.
690    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
691      momentum calculation.
692    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
693    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
694      remove checkpoint.F and the_correction_step.F (no longer used);
695      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
696    o add option (linFSConserveTr) to correct for tracer source/sink due to
697      Linear Free surface
698    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
699    o pkg/thsice: fix reading mnc-pickups
700    
701    checkpoint58t_post
702    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
703    o pkg/mdsio:
704     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
705       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
706       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
707     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
708     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
709       either MDS_READ_FIELD or MDS_WRITE_FIELD )
710     - new S/R (to replace MDSWRITEMETA), which allows to write more
711       informations (variable names, time ...) to meta files.
712     - modify rdmds.m to give back the meta file content.
713    o pkg/diagnostics: change vertical interpolation to be safer, and more
714       flexible (define p-levels to interpolate to in data.diagnostics);
715      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
716       diagnostic pointer.
717    o pkg/seaice: more cleaning up of seaice_growth, added many comments
718    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
719    o fix multi-category seaice:
720     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
721       SEAICE_MULTICATEGORY
722     - fix short wave heat flux
723    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
724       and allow to use EVP solver. Change forward lab_sea: test both EVP
725       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
726    o Initial check-in of lab_sea adjoint
727      (very similar to natl_box_adjoint/code_seaice)
728      * used C-grid and EVP solver
729      * used KPP, GM/Redi
730      * uses inAdExact=.TRUE.
731      * gradient checks fail for both ADM and TLM
732        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
733        f.d. gradients actually seem more problematic than ADM, TLM gradients;
734        issue is related to forward mismatch between g77 an ifort
735    o pkg/seaice: overhaul of thermodynamics
736     - growth.F and groatb.F are replaced by new routine seaice_growth.F
737     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
738     - move a few global fields out of SEAICE.h into seaice_growth.F and
739       make them 2D (FICE/QNETO/ ...)
740     - remove FO (it is the same as QNETO)
741     - introduce a few local fields to avoid modifying external fields such
742       as atemp, etc.
743    
744    checkpoint58s_post
745    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
746      changed exf_set_gen.F so that
747        genperiod=0 means input file is one time-constant field and
748        genperiod=-12 means input file contains 12 monthly means
749    o CG2D: use pre-computed solver main-diagonal (stored in common block);
750      this affects truncation error ; generate new output file for exp. which
751      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
752        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
753        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
754        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
755        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
756        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
757    o start implementation of deep-atmosphere and anelastic formulation
758    o verification: remove 2nd copy of input files and use script "prepare_run"
759      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
760    o mom_common/vecinv/fluxform: fix a few initialisation isssues
761    o profiles: fix for multithreaded case
762    
763    o diagnostics: rename few diags:
764      s/'PRESSURE'/'RCENTER '/g
765      s/'TICE    '/'oceFreez'/g
766      s/'TAUX    '/'oceTAUX '/g
767      s/'TAUY    '/'oceTAUY '/g
768      s/'SWFLUX  '/'oceQsw  '/g
769      s/DIFx/DFxE/g
770      s/DIFy/DFyE/g
771      and add few ocean-forcing diagnostics:
772      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
773    o modifications to pkg/seaice/growth.F and budget.F, which change results of
774      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
775      as actual snow thickness.  It now refers everywhere to effective snow
776      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
777    
778    checkpoint58r_post
779    o modifications to pkg/seaice/growth.F, which change results of
780      lab_sea experiment: fixes pertain to melting snow over open water, to
781      masking EVAP under sea ice, and to using the correct AREA variable for
782      computations of EVAP, PRECIP, HSNOW, and GHEFF
783    o add ability to read bathy, salt, and theta using MNC (off by def)
784    o add flooding algorithm and advection of HSNOW for pkg/seaice;
785      both are turned off by default and do no change any results
786    o seaice advection with pkg/thsice: a step toward the use of non-linear
787      advection scheme, but #ifdef or commented out for now (requires more EXCH).
788    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
789      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
790      in natl_box (affects results @ truncation level: update output.txt)
791    o multi-threading and IO:
792      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
793      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
794        (needed to work with SingleCpuIO): tested in all verif. exp.
795    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
796      affects the results (but none of the verification test uses this scheme).
797    o Adding some pkg/diagnostics capability to pkg/seaice
798      (will certainly be subject to changes)
799    o ctrl: adding new control variables:
800      lwflux, lwdown, evap, snowprecip, apressure, runoff
801    
802    checkpoint58q_post
803    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
804      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
805      high_res_cube configuration by 4% on Columbia.
806    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
807      add (in global_with_exf/code) a version of EXF_INTERP_READ without
808      dynamical allocation (seems to work in multi-threaded).
809    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
810      single CPU io) so that TAF does not have to see EESUPPORT.h
811    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
812    
813    checkpoint58p_post
814    o obcs: stop if obcs is used with useCDscheme = .true.
815    o shelfice:
816     - fix a sign error so that no slip at shelfice interface works
817     - remove stop for combination non-hydrostatic code and shelfice. That does
818       not mean, that the results are correct, but at least they are numerically
819       stable
820    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
821    o added adjoint exch routined for all exch*3d* routines
822      and updated flow directives
823    
824    checkpoint58o_post
825    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
826      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
827    o change controling S/R for writing pickup file (new S/R do_write_pickup)
828      and clean-up reading/writing of pickup files.
829    o fix local version of read/write pickup (NH part) in rotating_tank/code
830    o simplify EXCH interface:
831     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
832     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
833    o added the regrid package
834    o shelfice:
835     - add a simple boundary layer scheme to reduce noise
836     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
837    
838    checkpoint58n_post
839    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
840       local variable (not in common block).
841    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
842      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
843      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
844        to work with SingleCpuIO.
845    o add "_d 0" to real constant of pkg/cfc subroutines ;
846       update exp. cfc_exemple & tutorial_cfc_offline output files.
847    o multi-threading and IO:
848      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
849        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
850      - barrier before and after reading.
851      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
852      - avoid using MDS_WRITELOCAL for LAND pkg output.
853      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
854        common-block variables ; Allows multi-threading with master-thread IO.
855    o change default MAX_NO_THREADS from 32 to 4 ;
856      and stop cleanly when MAX_NO_THREADS is too small.
857    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
858    
859    checkpoint58m_post
860    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
861       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
862    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
863       keep global_ocean.90x40x15 (for AD testing) with former secondary test
864       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
865    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
866        add MITgcm_tutorials (= code + all the tutorials)
867    o ecco, option to compute cost for total ssh (mean+anom)
868    o consistent with addition of ptracer and ssh in pkg/profiles
869    o profiles: adding ptracer and ssh
870    o testreport: change multi-test output-file name
871      (from output.txt.{name} to output.{name}.txt)
872    o profiles: now ok for mutli-tiles case
873    o seaice: add 4 parameters for different advection schemes for area,
874      (effective) seaice thickness, enthalphy, and snow height. Their default
875      is the standard parameter SEAICEadvScheme
876    o calc_gw:
877     - add cosFacU in zonal viscous flux (harmonic.visc.).
878     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
879       of tutorial_plume_on_slope.
880    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
881    o calc_gw: true flux-form, account for horizontal grid spacing.
882      update rotating_tank results, but not plume_on_slope (affected at
883      truncation level, 11 digits).
884    
885    checkpoint58l_post
886    o calc_gw:
887     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
888     - remove side-drag for now (need to fix it); update plume_on_slope results.
889     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
890    o commit code to make SST/SSS weights spatially variable
891      (based on either variable in-situ or variable initial T/S weights)
892    o pkg/ecco:
893      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
894        now based on horizontally varying weights wthetaLev, wsaltLev
895      * cost_averagesflags now returns year indices in addition to day, month
896      * sflux balance is performed on annual basis
897        (sflxumm, sfluxmm2, bal_sfluxmm)
898      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
899        including separate counting and multipliers
900    o pkg/rbcs
901      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
902    
903    checkpoint58k_post
904    o testreport:
905     - always build in dir. "build" (if not there, mkdir build instead of building
906       & running in input)
907     - run in dir run (if it exists), in build otherwise.
908     - call prepare_run (if input/prepare_run exists)
909     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
910    o pkg/exf modifications to interpolation and rotation routines for more
911       reasonable treatment of North Pole singularity: for tracers North Pole
912       value is set to northernmost zonal-mean value, for zonal velocity it is
913       set to zero, and for meridional velocity it is set to northernmost value.
914    o pkg/exf/exf_check_range.F
915     - add tile index to diagnostics and move stop statement to the very
916       end of the routine.
917    o pkg/diagnostics: (diagnostics_main_init.F)
918      define title of isomorphic variables according to the current config.
919    o pkg/thsice with pkg/seaice dynamics:
920    - fix domain of computation (interior only, required for exf) and do exchanges
921    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
922    o towards a standard way of dealing with multi-threading in MONITOR
923      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
924    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
925       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
926    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
927    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
928    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
929       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
930    o tracer advection:
931     - clean-up and simplify calc_common_factors.F
932     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
933       advection subroutine (but still not used within DST advection S/R)
934    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
935    
936    checkpoint58j_post
937    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
938      from file (collects calls previously in FORWARD_STEP)
939    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
940    o adjoint store dir. adjusted accordingly
941    o genmake2
942      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
943    
944    checkpoint58i_post
945    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
946      on wind stress (SEAICEstressFactor defaults to 1.)
947    o Total number of Timers is finite (<=40): comment out 2 non-essential one
948      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
949    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
950      on CS-grid: no longer loosing mass.
951    o exf & curvilinear-grid: no longer modify longitude xC & xG.
952    o pkg/ggl90: fix sloppy output and fix a bug
953    o pkg/seaice: added SEAICEuseEVPpickup parameter
954      - Set to false in order to start EVP solver with
955        non-EVP pickup files when using SEAICEuseEVP
956      - fix sign error in diffusion in seaice_calc_rhs
957    
958    checkpoint58h_post
959    * Modifications for bottom topography control
960      o replace hFacC by _hFacC at various places
961      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
962      o add non-self-adjoint cg2d_nsa
963      o update autodiff support routines
964      o re-initialise hfac after ctrl_depth_ini
965      o works for 5x5 box, doesnt work for global_ocean.90x40x15
966    * Adding verification for 5x5 box (4-layer) bottom topography control
967    
968    checkpoint58g_post
969    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
970       used for mean seasonal cycle, mean diurnal cycle); add an example
971       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
972    o pkg/ggl90:
973      - add parameter (minimum surface kinetic energy)
974      - fix bug (avoiding division by zero)
975    o couple pkg/thsice to pkg/seaice:
976      - modify advection in seaice to accomodate new scalar fields to be advected
977      - only muliDimAdection scheme work with seaice/thsice
978      - mapping of thsice-variables to seaice-variables, back and forth
979      - does not break the verification experiments, but does not give the
980        desired results either
981    o pkg/seaice
982      - make (default) second order advection a bit less confusing?
983    
984    checkpoint58f_post
985    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
986      to pkg/seaice):
987      - new routines thsice_map_exf and thsice_get_exf provide the interface
988      - add an additional formal parameter to thsice_solve4temp
989    o pkg/exf:
990      - add new fields wspeed, snowprecip (to be able to couple to thsice)
991      - correct Stefan-Boltzmann constant
992      - new parameter for longwave surface emittance
993      - separate some stuff from exf_bulkformulae into new routines  
994        exf_radiation, exf_wind
995      - add new parameters and constants: longwave emissivity for ocean, ice
996        and snow, evaporation parameters over ice
997      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
998        either wind from stress or stress from wind
999    o pkg/thSIce:
1000    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1001    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1002       and THSICE_CALC_THICKN
1003    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1004    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1005      to make debugging easier.
1006    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1007    o pkg/bulk_force:
1008      - clean-up comments and parameters ;
1009      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1010    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1011      generate new output for test-experiment: aim.5l_cs.thSI
1012    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1013      testreport accordingly
1014    
1015    checkpoint58e_post
1016    o SEAICE_CGRID adjoint done
1017    o R_STAR adjoint implemented.
1018      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1019      * need to sort out init. of h0facc, etc.
1020    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1021      to be able to use it in pure forward.
1022    
1023    checkpoint58d_post
1024    o upgrade simple test-experiment to tutorial example:
1025     step.1: duplicate the experiment and (step.2) will remove the old copy.
1026      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1027      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1028      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1029      tutorial_global_oce_biogeo    <- copy of dic_example
1030      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1031      tutorial_plume_on_slope       <- copy of plume_on_slope
1032      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1033      tutorial_global_oce_optim     <- empty for now (David ?)
1034      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1035     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1036    o correct a sign problem in cost_scat.F
1037    o obcs and ptracers: fix boundary conditions for advections schemes
1038      with larger stencil
1039    o thsice adjoint: start
1040    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1041      completeness
1042    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1043      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1044    o ptracers adjoint:
1045      * avoid extensive recomputatations
1046      * fix missing re-init. of gptr (missed by TAF)
1047    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1048      me to turn off the excessive output to STDOUT that this package produces
1049    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1050      and add those terms in Vector-Invariant formulation.
1051    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1052      if the control period (xx_hfluxperiod etc) is 0
1053    o in profiles pkg, clean routines and fix details
1054    o in ecco pkg, reading ssh data:
1055      fix problem in case the model does not start at iter0=0
1056    o fix mnc-pickup/restart for ptracers
1057    o new package prifiles:
1058      code to compute profile-based cost by Gael Forget
1059      (modifs in ecco, ctrl, autodiff)
1060    o Benign bug fix in initialization (spotted by M. Mazloff) of
1061      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1062    
1063    checkpoint58c_post
1064    o adjoint: finish NLFS adjoint and provide reference output in
1065      verification/global_ocean.90x40x15/results_ad_nlfs
1066    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1067      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1068      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1069      with SEAICE_CGRID defined.
1070    o move calendarDumps from "data" to "data.cal" and clean-up the code
1071      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1072    o add useEXF & useCAL flags (for now, set in hard-coded way)
1073    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1074      (were missing in NH mode, and wrong in quasihydrostatic mode).
1075      waiting for Chris updated version of calc_gw to add those CALLs.
1076    o fix bug in quasihydrostatic S/R ;
1077      add a test for this option: global_ocean.90x40x15.qshyd
1078    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1079      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1080    o add on/off flag useOffLine for package OFFLINE
1081    o seaice:
1082      - modify advection so that it works also on the C-grid
1083      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1084        problem in multi-tile runs with C-grid
1085      - add flags for clipping ice velocities and/or masking solver forcing
1086      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1087        C-grid solver
1088      - added a few comments to seaice_diffusion.F
1089      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1090        are now exclusive)
1091      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1092        required re-ordering the code a little:
1093       + make DAIRN global variable (defined in SEAICE)
1094       + move computation of the viscosities eta and zeta into a new separate
1095         routine (because I need to recompute them in seaice_ocean_stress.F)
1096    
1097    checkpoint58b_post
1098    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1099      update output.txt of exp. aim.5l_cs.thSI
1100    o various mnc cleanups and improvements:
1101      + shrink lookup tables by factor of ~4
1102      + better error reporting when running out of lookup space
1103      + able to handle longer path/file names (up to 500 chars)
1104    o adjoint:
1105      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1106      - TBD: "hidden" mom_vecinv recomp. in dynamics
1107    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1108     (allow to differentiate between forcing components using new integer flags:
1109      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1110     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1111    o ecco
1112      - enable trend removal from SSH anomaly obs.
1113    o adjoint
1114      - a fix for PmEpR when #undef EXACT_CONSERV
1115      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1116      - try to fix "hidden" recomp. in forward_step for NLFS
1117        (NLFS seems broken sometimes after I checked it in)
1118    o seaice:
1119     - add c-grid version of the dynamic solver:
1120       + three new routines that are the c-grid substitute lsr, dynsolver
1121         and ostres
1122       + put a few fields that were local to dynsolver into global common
1123         blocks, so that I can move the computation of stresses etc into
1124         seaice_lsr (saves coding but may break the adjoint).
1125     - replace more hardwired parameters by runtime parameters
1126     - add ice masks that mask the rhs of the implicit solvers where there
1127       is no ice (commented out in seaice_dynsolver, because i am not sure
1128       if this works properly), eventually this should replace the clipping
1129       of ice velocities in seaice_dynsolver to +/-40cm/s.
1130    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1131      include it only where its needed
1132    o move balancing of fluxes before the call of external_forcing_surf
1133    o seaice:
1134      - correct units of turning angles (now they are really in degrees)
1135      - move computation of GWATX/Y out of main routine into dynsolver
1136      - initialize GWATX/Y in seaice_init
1137    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1138      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1139    o seaice: add runtime flags for turning angles (default to zero)
1140    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1141      and trend from exf forcing and ctrl control adjustments
1142    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1143      (since checkpoint57x_post)
1144    o change the default rotation period to 86164.s = the Earth rotation
1145    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1146      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1147    o seaice advection: add code for choosing between the default (2nd order
1148      central differences) and multiDim advection schemes provided by
1149      pkg/generic_advdiff
1150    o seaice:
1151      - removed all references to SEAICE_GRID.h fields from
1152        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1153        (cubed-sphere configuration will change a little)
1154      - grid computations in seaice_init are obsolete now.
1155      - cleaned up code a little so that is easier to read (hopefully).
1156      - added new (better?) discretizations of default advection and diffusion
1157        (turn on with SEAICEuseFluxForm)
1158      - replace 1 in 3d global fields by kSurface in growth.F
1159      
1160    checkpoint58a_post
1161    o seaice:
1162      - bug fix in advect.F
1163    o shelfice:
1164      - separate shelfice load anomaly from pload (breaks with time
1165        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1166        Its default is 0., but it may be computed more cleverly from (unknown)
1167        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1168        done offline. A good approximation of the pressure load anomaly is
1169        necessary to avoid large initial adjustment processes underneath
1170        deep-reaching shelfice.
1171      - small fix in ISOMIP shelfice_thermodynamics
1172      - add more sophisticated thermodynamics of Hellmer (1989), this is
1173        now the default
1174      - give a few constants more intuitive names
1175    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1176      if bulk formulae are used in long integration (especially EmPmR). Turn
1177      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1178      if balancePrintMean, the imbalance that is substracted is printed to
1179      STDOUT.
1180    o fix bug (typo) in obcs_apply_eta.F
1181    o add a new package shelfice which enables us to model the circulation
1182      underneath shelf-ice with draughts of hundreds of meters.
1183     - works
1184     - to do: + include improved thermodynamics
1185              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1186                instead of new field kTopC
1187              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1188                instead of new field R_shelfIce and new code in ini_depth.F
1189                and ini_mask_etc.F?
1190              + adjust vertical mixing schemes?
1191    o seaice pkg:
1192     - add a cpp-flag to include a simple formula for a salinity dependent
1193       freezing point of sea water at the surface
1194     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1195       meridional stresses are now different (and hopefully correct)
1196    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1197       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1198       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1199    o pkg/diagnostics: add options and parameters for regional-statistics
1200       diagnostics ; define regions by reading a region-mask from a file
1201       (might add other options later)
1202    o pkg/bulk_force:
1203     - add option and parameters to use AIM surface-flux formulae.
1204     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1205       others forcing fields (defined in PARM05, parameter file "data") are loaded
1206       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1207     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1208     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1209     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1210       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1211     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1212    
1213    checkpoint58
1214    o add "--embed-source" option to genmake2 which, when the supporting
1215      tools can be compiled (as determined by genmake2) will turn on the
1216      embed_files package which then embeds the entire MITgcm source code
1217      (*.[fFhc] + Makefile) used for the build within the executable
1218      - requested by CNH but off by default
1219      - adds a paltry <9MB to the mitgcmuv executable in most cases
1220      - only writes the output when useEMBEDSRC in eedata is true
1221    o clean up 3-dim. relaxation codes:
1222      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1223      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1224      * Thanks to Tom Haine for testing!
1225    
1226    checkpoint57z_post
1227    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1228      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1229    o fix the pickup behavior for obcs in combination with ptracers
1230    o fix a bug in ptracers_external_fields_load
1231    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1232      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1233    o transfered surface NH pressure to eta field (if exactConserv).
1234    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1235         and update lab_sea output.txt file.
1236    o completing 3-dim. relaxation code: additional term
1237         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1238      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1239      * At compile time, in "EXF_OPTIONS.h" set
1240          #define  ALLOW_CLIMTEMP_RELAXATION
1241          #define  ALLOW_CLIMSALT_RELAXATION
1242      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1243          tauThetaClimRelax3Dim = 15552000.0,
1244          tauSaltClimRelax3Dim  = 15552000.0,
1245      * 3 cases:
1246          1) Use a constant-in-time 3-dim. field
1247          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1248          3) Real-time relax. to time-evolving prescribed field
1249    o Adding Laplacian-type smoothness constraint on
1250      initial and boundary (forcing) controls (ic, bc)
1251      * enable at compile-time via
1252        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1253      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1254      * Absolute scale somewhat unclear so far
1255      * no area weighting was included since no other cost term does so far
1256    
1257    checkpoint57y_post
1258    First step for a NLFS adjoint
1259    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1260    o new init. routines for calc_r_star, calc_surf_dr
1261    o still need to deal with ini_masks_etc
1262    o testreport seemed happy
1263    checkpoint57y_pre
1264    
1265    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1266    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1267    o add new offset feature to offline pkg (plus minor cleanup)
1268    o cfc fixes for final year of integration
1269    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1270      be in GCHEM_OPTIONS).
1271    
1272    checkpoint57x_post
1273    o fix testreport Pb in multiple test experiment.
1274    o cleanup our namelist syntax in verification:
1275      - make it more F95 standards compliant (some work still needed)
1276      - allows the vast majority of our tests to work with gfortran
1277    o Non-Hydrostatic:
1278     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1279     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1280    o Allow to apply AB on T,S rather than on AB(gT,gS):
1281     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1282     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1283       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1284     - need a "clever" read_pickup to restart from the other AB formulation
1285    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1286    o remove some unused variables (reduces number of compiler warnings)
1287    o adjoint
1288      * Disable useVariableViscosity for adjoint for time being
1289        (there are a number of extensive recomputations)
1290      * Initialize certain variables needed for adjoint
1291    
1292    checkpoint57w_post
1293    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1294                 fix the singleCpuIO RS version of MDSWRITEFIELD
1295       and add a WARNING if using globalFiles=T with multi-processors.
1296    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1297      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1298    o tracer advection scheme:
1299      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1300       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1301       was not very convenient).
1302      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1303       (further tests needed for the implicit DST & Flux-Limiter schemes).
1304    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1305      and sRef for convenience, handy, when you want to initialize
1306      ptracers in a large domain with a constant non-zero value. Also,
1307      untangle ptracers_init.F a little.
1308    
1309    checkpoint57v_post
1310    o change dome exp. to use variable viscosity in side-drag terms.
1311    o remove all the files from the cfc_offline test since they are now
1312      incorporated into tutorial_cfc_offline which has been producing
1313      identical results for a few days of testing
1314    o add new parameter: sideDragFactor to enable half-slip-side BC
1315      and change side-drag S/R to use viscosity from mom_calc_visc
1316      (can switch back by setting sideDragFactor=0.); affects results at
1317      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1318       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1319    o vorticity & strain are now computed without masking, to account for
1320      no-slip-side BC in variable viscosity calculation ; mask is applied
1321      anyway later on, before computing advection/coriolis terms.
1322    o modify exp4 to test new obcs support for reading from external files
1323      and for passive tracers
1324    o fix behavior of ptracers_monitor when monitor output is written to a
1325      netcdf-file; still not independent of monitor.F (writes in the same
1326      file).
1327    o change default value of tRef (put a uniform, meaningful value for ocean
1328      & atmos) and initialize sRef (was missing, as Martin mentioned).
1329    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1330      to be proportional to enstrophy dissipation length.  Thus,
1331       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1332      This is now consistent with Smagorinsky and with the manual.
1333    
1334    checkpoint57u_post
1335    o OBCS and PTRACERS: add open boundary support for passive tracers
1336      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1337        OB-values from file; this is not different from the way theta and salinity
1338        are treated
1339      - however, Orlanski-radiation conditions are not supported, and the model
1340        will stop if you use pTracers and Orlanski at the same time.
1341      - beefed up the rountine obcs_external_fields_load: now only those open
1342        boundary values are overwritten with values from files for which there
1343        are really files, otherwise the OB-fields remain untouched. This makes
1344        it possible to use different OBs at different ends of the domain (as
1345        with EXF)
1346    o reduce number of exch calls in shap_filt (s2).
1347    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1348      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1349    
1350    checkpoint57t_post
1351    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1352    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1353      same truncation, independent of the face number: affects affects several
1354      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1355    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1356      note that biharmonic viscosity + no-slip was not tested in any experiment.
1357    o fix bug in non-linear free-surf side-drag ; generate new output for
1358      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1359    o make mnc honor the writeBinaryPrec flag for most kinds of output
1360    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1361    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1362      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1363    o add brackets in multi-terms sum to get same truncation, independent of
1364      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1365      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1366    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1367      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1368      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1369      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1370      Suggested values of viscosity parameters found in mom_calc_visc.
1371      Many new viscosity diagnostics available.
1372    
1373    checkpoint57s_post
1374    o Add clearing-house for viscosity calculations, mom_calc_visc and
1375      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1376      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1377      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1378      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1379      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1380      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1381      ViscAhStrain and viscAhTension are now retired.
1382    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1383    o In response to JMC's bug report, genmake2 now ignores any soft-links
1384      that it finds in the *current* directory when searching for files.
1385      Soft-links found in any other source directories will still work as
1386      they did before.
1387    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1388      a C routine to unlimit the stack size
1389    o mnc-ify pkg/aim snapshot vars
1390    o mnc-ify pkg/land as requested by Daniel
1391    o various changes to mnc including:
1392      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1393      - output can now be grouped so that all files within a group
1394          change the ITER portion of their names in lock-step together
1395      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1396          and works with both EXCH1 and EXCH2 (but needs more testing)
1397      - writing works for all verification test cases w/ g77 on Linux
1398    
1399    checkpoint57r_post
1400    o make MNC variable initialization happen earlier
1401    o add diagnostics for (almost) each term of the momentum Eq.
1402    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1403    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1404    o remove MINIMAL_TAVE_OUTPUT option ;
1405      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1406    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1407      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1408    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1409    o add time-dependent SST, SSS control
1410    o cost terms in ecco/ modularized (new cost_generic.F)
1411    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1412    o new infrastructure for seaice model vs. obs misfits in seaice/
1413      * driver from the_main_loop.F is seaice_cost_driver.F
1414      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1415      * gradient check in Exp. 6a of natl_box_adjoint/
1416    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1417      (see README file)
1418    
1419    checkpoint57q_post
1420    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1421    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1422      - bug was reported by Jean-Michel and Ian Fenty
1423    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1424      update exp. cpl_aim+ocn output.
1425    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1426      Needed for high-res. runs with large global files
1427      to be able to limit tapelev size
1428    o Changed some tests for adjoint:
1429      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1430      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1431      * global_ocean.90x40x15/ back to default 3-level checkpointing
1432    o Modifications to enable scripted COMMON to MODULE conversion
1433      * verification/OpenAD/code/ has necessary scripts and description;
1434      * converts, compiles and runs successfully;
1435    
1436    checkpoint57p_post
1437    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1438    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1439      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1440    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1441    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1442      (was already the case for dissipation with mom_vecinv,
1443       and also the case for grad.PhiHyd when staggered-timeStep)
1444      This will allow to put dissipation out-off the AB time-stepping.
1445     Unfortunately, affects truncation error. Update output of exp. that "fails"
1446      (cg2d matching number) and leave the others for later: front_relax(10),
1447      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1448      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1449    
1450    checkpoint57o_post
1451    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1452      (2) its ready to be documented during the 20050801 DocFest
1453    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1454      for ideal_2D_oce and lab_sea on linux_ia32_g77
1455    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1456      in global1x1_tot/code_seaice_adj to access indices 32, 33
1457      (worth another tag)
1458    
1459    checkpoint57n_post
1460    o adding precip control xx_precip 32
1461    o adding swflux control xx_swflux 33
1462    o Replacing 10 forcing penalty cost routines by 1 generic.
1463    o Implementing partitioning in time-mean and variable adjustment
1464      for atmos. state.
1465    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1466  o in natl_box_adjoint:  o in natl_box_adjoint:
1467    * updated: results_bulk/    * updated exp 1 to 10
1468    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1469    o updated global1x1/*_seaice_adj/
1470      to incorporate latest changes
1471    o enable useSingleCpuIO for mdsio vector routines
1472      (applies in particular to tapelev I/O)
1473    o removed inefficient K-loop in all active_file*control*.F
1474    
1475  checkpoint57m_post  checkpoint57m_post
1476  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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