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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.977 by mlosch, Tue Apr 22 15:29:06 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/seaice: add os7mp as an advection scheme
8  o moved ptracer ctrl index 17 -> 32                add check for advection schemes
9                  add a flag for restoring T and S underneath sea ice
10    o pkg/my82: add netcdf-support and diagnostics
11    o thsice pkg:
12      - Now hsMax limits snow heitght by turning it into ice following
13        flooding scheme (and now conserving energy)
14      - Slight rewriting of the formula in thsice_calc_thick.F
15      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
16        --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
17    
18    checkpoint59p
19    o gchem / dic / cfc :
20      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
21      - add new parameter files: "data.dic" & "data.cfc" ;
22      - various re-arrangement in initialisation & header file ;
23      - fix tutorial_global_oce_biogeo for multi-threaded test.
24    o pkg/dic: test for "pickup_dic" file when restarting ;
25      if no pickup-file, can restart with a re-initialised pH (same as it did
26      before) providing pickupStrictlyMatch is set to False.
27    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
28      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
29    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
30      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
31    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
32     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
33       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
34    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
35       scheme to use for vorticty-term ;
36     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
37       (with default selectVortScheme, return to original discretisation)
38     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
39    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
40    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
41      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
42      also fix diagnostics VISCAHW & VISCA4W.
43    
44    checkpoint59o
45    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
46    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
47      move a few statemens out the main loop into separate loops
48    o pkg/shelfice:
49      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
50        (kg/m^2/s), does not break tests, because in verification/isomip,
51        rhoConstFresh=rhoConst (by accident)
52      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
53      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
54        new file model/src/seawater.F, so that they are available for all pkgs.
55      - convert potential temperature into in-situ temperature. This changes the
56        isomip tests => update tests
57    o add a flag writePickupAtEnd (default=true) to be able to suppress
58      writing a pickup at the last timestep
59    o tools/mpack-1.6 :
60      - disable automake (not working) and autoconf (not needed).
61      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
62        also cleaner with much less compilation warnings.
63    o pkg/profiles:
64      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
65      (for "less than 32 characters name" compiler requirement)
66    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
67      conditions that have a different sampling frequency than S/T/U/V obcs
68    o pkg/diagnostics (stats-diags):
69      - fix global Min/Max in case 1 processor get only empty tiles
70    o genmake2: replace (4 times)
71         make genmake_tc_1.o >> genmake_warnings 2>&1
72      with
73         COMM="$CC $CFLAGS -c genmake_tc_1.c"
74         echo $COMM >> genmake_warnings
75         $COMM >> genmake_warnings 2>&1
76      to make genmake2 always see the value of CC as specified in the optfile.
77    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
78      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
79      - modify verification advect_cs test to test SOM-advection on CS-grid.
80    o pkg/ctrl:
81      - Rewrite of ctrl_map_ini_ecco.F,
82        introducing a generic routine (ctrl_map_ini_gen.F).
83      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
84    
85    checkpoint59n
86    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
87      number in dedicate array "hdiag":
88      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
89        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
90      - many small changes (integer format) for large number of diagnostics
91      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
92        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
93    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
94      usingSphericalGrid, this allows to define the rotated grid coordinates
95      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
96      geographical coordinates according to the inverse of the rotation defined
97      by the Euler angles, so that Coriolis parameter and online-interpolation by
98      exf works with the geographical coordinates on XC/YC/XG/YG.
99      Naturally, this feature does not work with all packages, so some
100      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
101      profiles), because there the coordinates are assumed to be regular
102      spherical grid coordinates.
103    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
104      - introduce isopycnal diffusion coefficient control.
105    o tools/adjoint_options:
106      - additional control vector components.
107    o pkg/mnc: have mnc create marginally meaning full coordinate variables
108      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
109    o pkg/mypackage:
110      - add example of read/write pickup for state-var ;
111      - add entry points to the main code for state-vars diags & write-pickup.
112    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
113      transitions for useExfYearlyFields
114      - add new subroutine that determines the file to read from for
115        use*YearlyFields = .TRUE. and .FALSE.
116      - add a verification experiment to global_with_exf that tests
117        useExfYearlyFields with USE_EXF_INTERPOLATION defined
118    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
119      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
120      subroutines (which could be generated from a template, because they are
121      almost identical), for now they are included in obcs_prescribe_read.F for
122      simplicity
123    o pkg/exf:
124      - add a little more diagnostic to exf_interp_read (in analogy to
125        mds_read_field, can be turned off with debugLevel < debugLevA=1)
126      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
127        ugly but fast by unrolling short inner loops, inserting a unroll=8
128        directive in routine lagran, and splitting a loop and making do while the
129        outermost loop (the latter requires the intoduction of index arrays)
130    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
131    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
132      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
133    o verification/seaice_obcs: updated for restart test and latest options
134    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
135      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
136      for now this is only available for the C-grid code and also within
137      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
138    
139    checkpoint59m
140    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
141      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
142    o gad_som : fix flux output (& diagnostics) to have same units as other  
143      advection scheme fluxes (was previously multiplied by deltaT).  
144    o added verification/seaice_obcs both to test seaice open boundaries
145      and to provide an example matlab scrpt for generating them
146    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
147    o pkg/salt_plume: clean up salt_plume_frac.F to
148      remove redundancy in PlumeMethod 1 and 4
149    o pkg/kpp: added saltplume diagnostics
150    o pkg/obcs and pkg/seaice:
151      - do not set uice and vice to zero when OB*icefile are unspecified
152      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
153      - moved seaice tracer obcs after call to seaice_growth
154    o pkg/salt_plume: added various options for salt plume depth
155      criterion and for vertical distribution of the salt
156    
157    checkpoint59l
158    o pkg/ptracers: new version of ptracers pickup:
159      read meta file and write only fields which are needed to restart.
160      ( same logic as main pickup file ; also using pickupStrictlyMatch )
161    o pkg/seaice:
162      - add timescale for melting due to warm mixed layer as a means of
163        setting SEAICE_availHeatFrac more conveniently
164      - add a CPP-flag/runtime parameter check for flooding algorithm
165      - reformulated availHeat in seaice_growth.F to be independent of AREA
166    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
167      unit changes
168    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
169    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
170      SX vector computer.
171    o pkg/seaice:
172      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
173        seaice forcing fields can now be read only through pkg/exf
174      - removed some unused halos
175    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
176    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
177      or U/VICE from U/VWIND before computing U/VSTRESS
178    
179    checkpoint59k
180    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
181      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
182    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
183      all experiments pass when compile with un-initialised var. checking option.
184    o added pkg/salt_plume
185    o script to test restart (for now, in MITgcm_contrib/jmc_script)
186    o pkg/seaice: new read/write pickup version.
187      read meta file and write only fields which are needed to restart.
188      ( same logic as main pickup file ; also using pickupStrictlyMatch )
189    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
190    o lab_sea.hb87: modify the domain & update output.hb87.txt :
191      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
192      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
193      process. Fixed here by closing the domain at the Northern boundary.
194    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
195    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
196      a set of consecutive levels in/from a 3-D array.
197    o pkg/ptracers:
198      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
199      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
200    
201    checkpoint59j
202    o in pkgs: dic, obcs, offline, rbcs:
203      standard way to compute coeff. for time interpolation between 2 time reccords
204      which retains full precision (& make results less dependent on compiler).
205      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
206    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
207      packages instead of reading ice cover and wind speed separately
208    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
209     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
210      to allow to compile customized code before the update)
211    o cleaning-up:
212      - fix CPP instruction syntax in pkg/obcs
213      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
214        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
215      - fix some threads issue in IO parts.
216    o pkg/dic:
217      - add tons of "_d 0" (--> much better testreports !)
218       and then update outputs of tutorial_global_oce_biogeo
219    o pkg/mom_fluxform:
220      add a special version of momentum advection intended to conserve momentum
221      next to a bathymetry step or a coastline edge. (default = off = #undef)
222    o new read/write pickup version:
223      - for now, only implemented for main (mdsio) pickup file.
224      - write out only what is needed to restart; merge pickup_nh , pickup_ph
225        and main pickup together.
226      - read meta file; read only what is needed to restart; stop if a field
227        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
228        if it make sense (even if the restart is not perfect).
229      - if no meta file, assume that pickup to read corresponds exactly to
230        a pickup that would currently be written.
231      - read pickup written in the old format (until checkpoint59i) if it
232        recognizes an old meta file (no field-list).
233      - add a meta file in exp. which starts from a pickup: 2 cases:
234        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
235         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
236        b) a meta file describing the content of the associated pickup file
237         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
238    o pkg/mdsio & pkg/rw:
239      - new routine to read a meta file ; new set of routine to read
240        Multiple-fields file (with meta file).
241    o added open boundary conditions capability for seaice
242        HSNOW, HSALT, UICE, and VICE
243    
244    checkpoint59i
245    o adjoint:
246      * fix multiDimAdvection adjoint
247        (partial recomputation problem by TAF for fVerT(:,:,kDown)
248        and comlev1 size definition (maxpass vs. max. number of tracers)
249      * verification/global_ocean.90x45x15 adjoint now tests
250        NLFS and multiDimAdvection using DST3 (=30)
251      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
252    o pkg/kpp: add "_d 0" to real constant (if missing);
253      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
254      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
255    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
256      for internal parameters related to restart process (formerly from PARAMS.h)
257      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
258    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
259      as argument. (only atm2d & obcs write_pickup have not yet been updated)
260    o pkg/monitor:
261      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
262      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
263      - account for deep Atmosphere factor and density factor (anelastic)
264    o added open boundary conditions capability for seaice HEFF and AREA
265    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
266      thermodynamics
267      - requires a little reorganization, which affects the testreport results
268        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
269        so that now the conservative form is tested
270      - add a few comments
271    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
272    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
273    o add new diagnostics to seaice: advective, diffusive fluxes (only for
274      multidim-advection, for scheme 2 they are not filled) and transports,
275      thermodynamic growth rates
276    o change units of EmPmR (inside the code, + within coupling interface)
277      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
278      Affects results @ truncation level (cg2d match) and update output of
279       experiments: lab_sea(6), global_ocean.90x40x15(10),
280      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
281      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
282      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
283      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
284    
285    checkpoint59h
286    o pkg/exf:
287      - improve vectorization by moving if-statement out of loops in
288        exf_mapfields, exf_radiation
289      - exf_bulkformulae.F: introduce 2D fields and vectorize code
290    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
291    o testreport:
292      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
293        monitor & update offline_exf_seaice exp. output.
294      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
295    o pkg/seaice:
296      - bug fix in the evp solver: boundary conditions were affected be
297        masking of zMax/zMin (changes results)
298      - minor bug fix in boundary conditions in seaice_calc_strainrates
299        (changes results for no_slip)
300      - seaice_lsr.F: make interpolation of eta dependent on boundaries
301      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
302      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
303        stress formulation and no-slip boundary conditions
304    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
305      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
306    o pkg/seaice: a first HSALT time stepping equation has been checked in
307    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
308      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
309      without requiring DO-IF statements
310    o pkg/thsice:
311      use continuous power-law function for partition of energy between lateral
312      melting/freezing and thinning/thickening ; old code using step function
313      still available with #undef THSICE_FRACEN_POWERLAW
314      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
315    o testreport: change AD testing : check against results/output_adm.txt
316      using same scripts as for forward test.
317    
318    checkpoint59g
319    o adjoint testing: in preparation for changing testreport:
320      - output format: cost and grad written on separated lines
321      - ad output results in directory "results" (instead of "results_ad")
322    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
323    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
324    o pkg/ecco: allow user defined cost function contributions
325    o testreport:
326      Allow to choose (per experiment) the list of tested output variables
327       and the main variable (used to issue a pass/FAIL ) ;
328      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
329      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
330      Also modify printing of summary:
331       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
332       b) echo the list of tested variables in the individual summary.txt of
333          each experiment.
334    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
335      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
336      (but still depend on the tile decompostion of the domain).
337    o pkg/seaice: change a discretization detail to make the B-grid code
338      "more symmetric". This change is likely to remove all "ridges/leads" that
339      where quasi-aligned with the grid in B-grid solutions. It may also be
340      the solution to the stress coupling issues with the B-grid.
341    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
342      remove .cvsignore from input dir. (since testreport no longer run here).
343    o pkg/thsice:
344     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
345     - fix reshaping of sea-ice just after advection:
346       melt all the ice only if ice-volume is too small.
347     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
348       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
349     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
350    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
351      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
352    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
353      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
354      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
355      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
356      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
357      -> update output.txt
358    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
359     this affects truncation error: -> update output.txt of exp:
360      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
361      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
362    
363    checkpoint59f
364    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
365    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
366      a bounded range (in forward mode)
367    o pkg/ecco, ctrl, autodiff and mom_common:
368     internal parameter controls, completements of implementations
369    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
370    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
371      (not seem any difference in testing results).
372    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
373       at face corners.
374    o pkg/generic_advdiff:
375     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
376      loop range indices for computing vertical advection tendency
377      and do the calculation in the interior only (no overlap) ;
378      for now, only implemented for SOM advection (to save CPU time).
379     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
380    o exch2 adjoint
381      First set of changes:
382      - add exch2 hand-written adjoint templates
383      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
384        This will require cleanup in pkg/autodiff/*.F
385        (changed routines currently kept separate in verif. code/)
386      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
387        that used to hide exch2 or cubed-sphere specific code
388        (commented via 'cph-exch2')
389    o pkg/seaice
390      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
391    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
392       output of global_ocean.cs32x15.thsice .
393    
394    checkpoint59e
395    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
396      for B-grid vector (not yet tested) and C-grid vector (<- only used
397      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
398    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
399      (#ifdef ALLOW_SALT_PLUME)
400    o gather_2d/scatter_2d: removed halo regions
401    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
402      scheme and the corresponding test case (under front_relax dir). For now,
403      only available with Skew-flux form and not yet tested in realistic set-up.
404      adjoint: store directives updated, but gradient checks deteriorated,
405      so maybe GM/Redi adjoint is now broken.
406    o seaice adjoint
407      * add AREA, HEFF, HSNOW as control variable
408        (should not change lab_sea results)
409      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
410    o pkg/seaice:
411      * added computation of saltFlux in seaice_growth;
412        For time being, sea ice salinity is assumed constant
413        contribution of snow flooding to freshening of sea ice is neglected.
414        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
415        defaults to 0.0 in order to maintain backward compatibility.
416        Typical values for SEAICE_salinity are 4 to 10 g/kg.
417      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
418      * added SEAICE_availHeatFrac, which specifies fraction of surface level
419        heat content used to melt or grow ice
420      * commented out cap of HICE: it helps keep ice thinner
421      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
422      * applied OBCS T/S mask to HEFFM sea ice mask
423    
424    checkpoint59d
425    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
426     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
427     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
428    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
429     and change default value of parameter "GM_Small_Number";
430     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
431       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
432       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
433    o pkg/ecco: cost function when applying pkg/smooth to controls
434    o pkg/ctrl: add forcingPrecond run time parameter
435    o pkg/seaice:
436     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
437     - fix bug in metric terms of u-equation in LSR solver (implicit part),
438       changes verification/lab_sea
439     - rearrange implicit part of u-equation in LSR solver to make it easier to
440       read, understand, and debug. This causes changes at the truncation level.
441     - fix (serious) bug in the boundary conditions (sign error in the implicit
442       part) of the LSR solver. Changes all LSR results.
443     - fixed problem with HSNOW initialization to avoid thick snow when AREA
444       is initilized with small values - does not change lab_sea results.
445     - added HsnowFile initialization capability
446    o pkg/smooth: addition to model/src and pkg/ctrl so allow
447     initialization of pkg/smooth and application to control vector
448    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
449    o dependencies: pkg/profiles requires pkg/cal
450    o pkg/profiles:
451     - added option ALLOW_PROFILES_GENERICGRID
452         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
453         that interpolation information (grid points and coefficients) is provided
454         within the netcdf input files.
455         -> sample matlab scripts can be found in MITgcm_contrib/gael
456         that allow you to prepare netcdf input files.
457     - also modified: cleaner include statements, cleaner error print statements,
458       cleaner stops when error, and more tests of the netcdf input files consistency.
459    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
460    o pkg/seaice:
461     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
462       requires a new routine: seaice_diagnostics_fill.F
463     - make sure that seaice does not move if not forced (pressure replacement
464       method, Hibler and Ip, 1995), changes results
465     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
466     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
467       It is turned off by default (=-1.), because it changes the results.
468     - make it possible to read AREA from a file, too.
469    
470    checkpoint59c
471    o add S/R and diagnostics for oceanic mixed-layer depth
472    o move GMRedi call after all vertical mixing schemes (including KPP)
473    o pkg/thsice:
474     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
475      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
476    o pkg/obcs:
477     - bug fix for balance code
478    o pkg/seaice:
479      - allow values of SEAICE_elasticParm > 1
480      - add new parameter SEAICE_evpTauRelax as an alternative
481        to SEAICE_elasticParm
482      - make lsr boundary conditions free slip (by default), changes result
483      - add code for no slip boundary conditions for lsr
484      - set minimum of zeta to zero (and not 4e8) (changes results)
485      - add a cap on AREA after advecting AREA if seaice_growth is not called
486    o change calculation of Visbeck K:
487      - no longer depend on tapering scheme; instead, compute slope (limited
488        by GM_maxSlope). this is equivalent to what was comuted before with
489        clipping or linear tappering.
490      - fix vertical averaging (wrong by 1/2 level)
491      - leave the old version (but will not be maintained) within
492        #ifdef OLD_VISBECK_CALC / #endif
493      - update output of exp. ideal_2D_oce
494    o change error catch in calc_r_star to improve vectorization
495    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
496      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
497    o adjoint:
498      Re-organized adjoint checkpointing according to Matt Mazloff
499      (but with modifs/completions/cleanups)
500      Storing is now bundled into large arrays to optimized I/O
501      (and second step in cleanup of the_main_loop)
502    
503    checkpoint59b
504    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
505      - export/import (between ocean & coupler) fields needed for ocean DIC.
506    o pkg/seaice:
507      - get rid of three more exchanges seaice_calc_viscosities (required
508        different loop boundaries in seaice_lsr and seaice_ocean_stress)
509      - bug fix in seaice_ocean_stress (update of lab_sea required)
510      - reduce loop boundaries to necessary minimum also in seaice_evp
511      - go back to the old way of computing deltaC/Z as the adjoint likes that
512        better
513    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
514      passive tracer to an Age Tracer) + update output.txt
515    o pkg/exf:
516      - implement A-grid / C-grid selection for wind-stress input files.
517      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
518      for now, in exf_bulk_largeyeager04.F only :
519      - change implementation for case where windspeed + 2. components wind-stress
520        are read-in. AND use rhoConstFresh to convert evap.
521    o pkg/seaice:
522      - use correct EXCH_UV for wind-forcing (on A-grid).
523      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
524        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
525    o pkg/exf:
526      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
527      EXF_INTERPOLATION:
528      - merge global_with_exf/code version of exf_interp_read.F
529        to the main code ;
530      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
531        reading the file ; Important: This options needs to be defined to recover
532        previous code.
533        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
534      - no longer loose real*8 precision along the way when using exf_iprec=64.
535    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
536      - change discretisation of evp-solver in order to avoid another exchange
537        (changes lab_sea) and clean up a little
538      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
539        help the adjoint (this also changes the results slightly)
540      - add a few "_d 0" where they had been missing in seaice_evp.F
541      - cleaning up: remove unused seaice_calc_rhs.F
542    o pkg/exf: some cleaning-up:
543      - change various "constants" into runtime parameters
544      - cleaned-up Large&Yeager04 routine which should eventually
545        replace exf_bulkformulae.F (changed names of S/R and CPP)
546        and merged various ALLOW_ATM_WIND options
547     only used with thsice pkg (in thsice_get_exf.F):
548      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
549        which are used when useStabilityFct_overIce=TRUE (= the default)
550      - change default values of ice & snow emissivity and scale downward LW
551        by ice & snow emissivity.
552    o pkg/thsice:
553     fix few little problems, in thsice_calc_thickn.F:
554      - growth vertically (and not laterally) if iceFrac == iceMaskMax
555      - melt only laterally if hIce < hThinIce (as the comments say)
556      and in thsice_extend.F:
557      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
558      - start to form ice as soon as the minimum ice-volume is reachable.
559     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
560      and cpl_aim+ocn
561    o pkg/kpp
562     - move computation of surface related input fields to KPP into a new
563       subroutine kpp_forcing_surf.F
564     - remove wrong (within bi,bj loops) EXCH calls.
565     - little cleaning (add argument myThid in last position, cvs header ...)
566     - for now, fix conservation problem by exchanging KPPviscAz (may not
567       be the best fix)
568    o pkg/seaice
569     - check for inconsistent evp parameter/cpp-flag combination
570     - remove leftover errIO flat for obsolete name list error handling
571    o OpenAD
572     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
573    
574    checkpoint59a
575    o pkg/seaice: some parameter clarifications and a little bit of clean up
576    o pkg/thsice: rename run-time parameters:
577       himin       -> hIceMin
578       himin0      -> hThinIce
579       hihig       -> hThickIce
580       i0          -> i0swFrac
581       transCoef   -> bMeltCoef
582       frac_energy -> fracMelting
583      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
584       with default values (for now) that do not change the results.
585      remove old version of thsice vars advection in pkg/seaice.
586    o in FFIELDS.h:
587      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
588      - make pLoad & sIceLoad always available (but still only used if
589         ATMOSPHERIC_LOADING is #define).
590    o pkg/kpp: replaced _KPP_RL with _RL
591    o bug fixes for vertical diffusivity computations when both KPP and
592        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
593        are no longer updating the vertical diffusivity array
594        (passed as argument) but are (re-) setting those arrays.
595    o pkg/seaice: fix bug in evp solver, while doing that
596      - change (improve?) discretization of stress computations for both
597        cgrid-lsr and evp solver
598      - add a new routine to compute strain rates
599      - the above changes lab_sea results
600      - add no slip conditions for evp solver (off by default), lsr-version
601        may follow
602      - fix exchange for shear at Z-points (does not change lab_sea)
603      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
604        (to force the user to pick a time step since there is not "safe" way
605        of choosing it)
606      - add principal stress diagnostics
607      - rearrange fields for evp a little to avoid having to call a: too many
608        exchanges and b: exchanges for stress trensor components which we do
609        not have.
610      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
611        of evp, complete rewrite for lsr case (latter is does not yet work
612        in all cases)
613    o pkg/kpp: add code to have mixing in shelf ice caverns
614      - add myThid to all kpp routines (long overdue)
615    
616    checkpoint59
617    o pkg/exf:
618      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
619        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
620      - move exf header files from lower_case.h to UPPER_CASE.h ;
621        add missing cvs Header & Name
622      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
623      - add namelist param. selectStressGridPosition, exf_monFreq
624      - retire many _CLIM routines, and remove data.exf_clim
625        + params moved to data.exf
626        + climsst, climsss now handled by exf_set_gen, i.e.
627          climss?period=0 refers to constant field,
628          climss?period=-12 to monthly forcing
629      - split up namelists in data.exf
630    o pkg/seaice:
631      - remove seaice_exch and seaice_exch_uv
632      - remove superfluous exchange of theta
633      - add myThid to seaice_budget_ocean/ice
634      - add new interface for atmospheric wind forcing (C-grid only)
635        + new routine
636        + two new field (taux, tauy for stress over ice)
637        + removed one global field (DAIRN) for C-grid case only
638    o pkg/thsise
639      - 2nd set of modifs for thsice adjoint in conjunction with exf
640    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
641    
642    checkpoint58y_post
643    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
644      vertical diffusivity, similar to that in MOM4; turned on using
645      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
646      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
647    o Added capability for 3D specification of background vertical diffusion
648      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
649      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
650      "data" file that contains the 3D vertical diffusivity coefficients.
651    o ice dynamics (pkg/seaice) with thsice thermodynamics:
652      - add code within pkg thsice to advect & diffuse sea-ice fields
653      similar to (and will replace) what has been added in  seaice_advdiff.F,
654      but: - conserving Mass, Heat & Salt.
655           - better when using non-linear advection scheme (not yet fully tested)
656           - can also be used in atmospheric set-up (for now, only the diffusion).
657    
658    checkpoint58x_post
659    o IO option for global-file compact format:
660      - add options when generating topology (utils/exch2/matlab-topology-generator)
661      - add I/O capability (pkg/mdsio).
662      - adapt utils/matlab/rdmds.m to read this format.
663      for now long-line format not yet supported by pkg/mdsio (& exch2).
664    o shelfice: add a few diagnostics
665    
666    checkpoint58w_post
667    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
668      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
669      (and replace horiVertRatio in NH code).
670      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
671                         and tutorial_plume_on_slope (sensitive to truncation)
672    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
673      directly to drive seaice model (C-grid only)
674    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
675     - reintroduce computation of wind from stress,
676     - compute tau (in exf_bulkformulae.F) from windstress averaged to
677       mass points to avoid tau = 0
678     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
679    o rdmnc.m: make it work with "global" files created with gluemnc
680    o rdmnc.m : some improvements in dealing with singleton dimension
681      (tested on all testreport mnc output files).
682    o genmake2: disable pkg/profiles if netcdf test fails.
683    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
684    o move call to cal_readparms up to make calendar parameters/variable available
685      to all packages
686    
687    checkpoint58v_post
688    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
689      useDynP_inEos_Zc tested.
690    o pkg/exf: changes to properly interpolate/mask/scale initial fields
691    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
692      and portions thereof.  See read_cs.txt for description and examples.
693    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
694      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
695      following the great-circle arc between those 2 points.
696    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
697      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
698    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
699     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
700     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
701     - still needs work (not working with some options ; efficiency to improve)
702       and serious testing.
703     - use this scheme for temperature & salinity in 2 advection test exp.:
704       advect_xy & advect_xz, respectively.
705    
706    checkpoint58u_post
707    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
708    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
709    o testreport: add option "-skipdir" to skip some test.
710    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
711      momentum calculation.
712    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
713    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
714      remove checkpoint.F and the_correction_step.F (no longer used);
715      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
716    o add option (linFSConserveTr) to correct for tracer source/sink due to
717      Linear Free surface
718    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
719    o pkg/thsice: fix reading mnc-pickups
720    
721    checkpoint58t_post
722    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
723    o pkg/mdsio:
724     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
725       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
726       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
727     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
728     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
729       either MDS_READ_FIELD or MDS_WRITE_FIELD )
730     - new S/R (to replace MDSWRITEMETA), which allows to write more
731       informations (variable names, time ...) to meta files.
732     - modify rdmds.m to give back the meta file content.
733    o pkg/diagnostics: change vertical interpolation to be safer, and more
734       flexible (define p-levels to interpolate to in data.diagnostics);
735      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
736       diagnostic pointer.
737    o pkg/seaice: more cleaning up of seaice_growth, added many comments
738    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
739    o fix multi-category seaice:
740     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
741       SEAICE_MULTICATEGORY
742     - fix short wave heat flux
743    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
744       and allow to use EVP solver. Change forward lab_sea: test both EVP
745       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
746    o Initial check-in of lab_sea adjoint
747      (very similar to natl_box_adjoint/code_seaice)
748      * used C-grid and EVP solver
749      * used KPP, GM/Redi
750      * uses inAdExact=.TRUE.
751      * gradient checks fail for both ADM and TLM
752        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
753        f.d. gradients actually seem more problematic than ADM, TLM gradients;
754        issue is related to forward mismatch between g77 an ifort
755    o pkg/seaice: overhaul of thermodynamics
756     - growth.F and groatb.F are replaced by new routine seaice_growth.F
757     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
758     - move a few global fields out of SEAICE.h into seaice_growth.F and
759       make them 2D (FICE/QNETO/ ...)
760     - remove FO (it is the same as QNETO)
761     - introduce a few local fields to avoid modifying external fields such
762       as atemp, etc.
763    
764    checkpoint58s_post
765    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
766      changed exf_set_gen.F so that
767        genperiod=0 means input file is one time-constant field and
768        genperiod=-12 means input file contains 12 monthly means
769    o CG2D: use pre-computed solver main-diagonal (stored in common block);
770      this affects truncation error ; generate new output file for exp. which
771      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
772        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
773        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
774        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
775        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
776        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
777    o start implementation of deep-atmosphere and anelastic formulation
778    o verification: remove 2nd copy of input files and use script "prepare_run"
779      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
780    o mom_common/vecinv/fluxform: fix a few initialisation isssues
781    o profiles: fix for multithreaded case
782    
783    o diagnostics: rename few diags:
784      s/'PRESSURE'/'RCENTER '/g
785      s/'TICE    '/'oceFreez'/g
786      s/'TAUX    '/'oceTAUX '/g
787      s/'TAUY    '/'oceTAUY '/g
788      s/'SWFLUX  '/'oceQsw  '/g
789      s/DIFx/DFxE/g
790      s/DIFy/DFyE/g
791      and add few ocean-forcing diagnostics:
792      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
793    o modifications to pkg/seaice/growth.F and budget.F, which change results of
794      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
795      as actual snow thickness.  It now refers everywhere to effective snow
796      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
797    
798    checkpoint58r_post
799    o modifications to pkg/seaice/growth.F, which change results of
800      lab_sea experiment: fixes pertain to melting snow over open water, to
801      masking EVAP under sea ice, and to using the correct AREA variable for
802      computations of EVAP, PRECIP, HSNOW, and GHEFF
803    o add ability to read bathy, salt, and theta using MNC (off by def)
804    o add flooding algorithm and advection of HSNOW for pkg/seaice;
805      both are turned off by default and do no change any results
806    o seaice advection with pkg/thsice: a step toward the use of non-linear
807      advection scheme, but #ifdef or commented out for now (requires more EXCH).
808    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
809      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
810      in natl_box (affects results @ truncation level: update output.txt)
811    o multi-threading and IO:
812      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
813      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
814        (needed to work with SingleCpuIO): tested in all verif. exp.
815    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
816      affects the results (but none of the verification test uses this scheme).
817    o Adding some pkg/diagnostics capability to pkg/seaice
818      (will certainly be subject to changes)
819    o ctrl: adding new control variables:
820      lwflux, lwdown, evap, snowprecip, apressure, runoff
821    
822    checkpoint58q_post
823    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
824      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
825      high_res_cube configuration by 4% on Columbia.
826    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
827      add (in global_with_exf/code) a version of EXF_INTERP_READ without
828      dynamical allocation (seems to work in multi-threaded).
829    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
830      single CPU io) so that TAF does not have to see EESUPPORT.h
831    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
832    
833    checkpoint58p_post
834    o obcs: stop if obcs is used with useCDscheme = .true.
835    o shelfice:
836     - fix a sign error so that no slip at shelfice interface works
837     - remove stop for combination non-hydrostatic code and shelfice. That does
838       not mean, that the results are correct, but at least they are numerically
839       stable
840    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
841    o added adjoint exch routined for all exch*3d* routines
842      and updated flow directives
843    
844    checkpoint58o_post
845    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
846      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
847    o change controling S/R for writing pickup file (new S/R do_write_pickup)
848      and clean-up reading/writing of pickup files.
849    o fix local version of read/write pickup (NH part) in rotating_tank/code
850    o simplify EXCH interface:
851     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
852     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
853    o added the regrid package
854    o shelfice:
855     - add a simple boundary layer scheme to reduce noise
856     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
857    
858    checkpoint58n_post
859    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
860       local variable (not in common block).
861    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
862      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
863      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
864        to work with SingleCpuIO.
865    o add "_d 0" to real constant of pkg/cfc subroutines ;
866       update exp. cfc_exemple & tutorial_cfc_offline output files.
867    o multi-threading and IO:
868      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
869        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
870      - barrier before and after reading.
871      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
872      - avoid using MDS_WRITELOCAL for LAND pkg output.
873      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
874        common-block variables ; Allows multi-threading with master-thread IO.
875    o change default MAX_NO_THREADS from 32 to 4 ;
876      and stop cleanly when MAX_NO_THREADS is too small.
877    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
878    
879    checkpoint58m_post
880    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
881       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
882    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
883       keep global_ocean.90x40x15 (for AD testing) with former secondary test
884       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
885    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
886        add MITgcm_tutorials (= code + all the tutorials)
887    o ecco, option to compute cost for total ssh (mean+anom)
888    o consistent with addition of ptracer and ssh in pkg/profiles
889    o profiles: adding ptracer and ssh
890    o testreport: change multi-test output-file name
891      (from output.txt.{name} to output.{name}.txt)
892    o profiles: now ok for mutli-tiles case
893    o seaice: add 4 parameters for different advection schemes for area,
894      (effective) seaice thickness, enthalphy, and snow height. Their default
895      is the standard parameter SEAICEadvScheme
896    o calc_gw:
897     - add cosFacU in zonal viscous flux (harmonic.visc.).
898     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
899       of tutorial_plume_on_slope.
900    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
901    o calc_gw: true flux-form, account for horizontal grid spacing.
902      update rotating_tank results, but not plume_on_slope (affected at
903      truncation level, 11 digits).
904    
905    checkpoint58l_post
906    o calc_gw:
907     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
908     - remove side-drag for now (need to fix it); update plume_on_slope results.
909     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
910    o commit code to make SST/SSS weights spatially variable
911      (based on either variable in-situ or variable initial T/S weights)
912    o pkg/ecco:
913      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
914        now based on horizontally varying weights wthetaLev, wsaltLev
915      * cost_averagesflags now returns year indices in addition to day, month
916      * sflux balance is performed on annual basis
917        (sflxumm, sfluxmm2, bal_sfluxmm)
918      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
919        including separate counting and multipliers
920    o pkg/rbcs
921      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
922    
923    checkpoint58k_post
924    o testreport:
925     - always build in dir. "build" (if not there, mkdir build instead of building
926       & running in input)
927     - run in dir run (if it exists), in build otherwise.
928     - call prepare_run (if input/prepare_run exists)
929     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
930    o pkg/exf modifications to interpolation and rotation routines for more
931       reasonable treatment of North Pole singularity: for tracers North Pole
932       value is set to northernmost zonal-mean value, for zonal velocity it is
933       set to zero, and for meridional velocity it is set to northernmost value.
934    o pkg/exf/exf_check_range.F
935     - add tile index to diagnostics and move stop statement to the very
936       end of the routine.
937    o pkg/diagnostics: (diagnostics_main_init.F)
938      define title of isomorphic variables according to the current config.
939    o pkg/thsice with pkg/seaice dynamics:
940    - fix domain of computation (interior only, required for exf) and do exchanges
941    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
942    o towards a standard way of dealing with multi-threading in MONITOR
943      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
944    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
945       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
946    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
947    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
948    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
949       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
950    o tracer advection:
951     - clean-up and simplify calc_common_factors.F
952     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
953       advection subroutine (but still not used within DST advection S/R)
954    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
955    
956    checkpoint58j_post
957    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
958      from file (collects calls previously in FORWARD_STEP)
959    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
960    o adjoint store dir. adjusted accordingly
961    o genmake2
962      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
963    
964    checkpoint58i_post
965    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
966      on wind stress (SEAICEstressFactor defaults to 1.)
967    o Total number of Timers is finite (<=40): comment out 2 non-essential one
968      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
969    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
970      on CS-grid: no longer loosing mass.
971    o exf & curvilinear-grid: no longer modify longitude xC & xG.
972    o pkg/ggl90: fix sloppy output and fix a bug
973    o pkg/seaice: added SEAICEuseEVPpickup parameter
974      - Set to false in order to start EVP solver with
975        non-EVP pickup files when using SEAICEuseEVP
976      - fix sign error in diffusion in seaice_calc_rhs
977    
978    checkpoint58h_post
979    * Modifications for bottom topography control
980      o replace hFacC by _hFacC at various places
981      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
982      o add non-self-adjoint cg2d_nsa
983      o update autodiff support routines
984      o re-initialise hfac after ctrl_depth_ini
985      o works for 5x5 box, doesnt work for global_ocean.90x40x15
986    * Adding verification for 5x5 box (4-layer) bottom topography control
987    
988    checkpoint58g_post
989    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
990       used for mean seasonal cycle, mean diurnal cycle); add an example
991       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
992    o pkg/ggl90:
993      - add parameter (minimum surface kinetic energy)
994      - fix bug (avoiding division by zero)
995    o couple pkg/thsice to pkg/seaice:
996      - modify advection in seaice to accomodate new scalar fields to be advected
997      - only muliDimAdection scheme work with seaice/thsice
998      - mapping of thsice-variables to seaice-variables, back and forth
999      - does not break the verification experiments, but does not give the
1000        desired results either
1001    o pkg/seaice
1002      - make (default) second order advection a bit less confusing?
1003    
1004    checkpoint58f_post
1005    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1006      to pkg/seaice):
1007      - new routines thsice_map_exf and thsice_get_exf provide the interface
1008      - add an additional formal parameter to thsice_solve4temp
1009    o pkg/exf:
1010      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1011      - correct Stefan-Boltzmann constant
1012      - new parameter for longwave surface emittance
1013      - separate some stuff from exf_bulkformulae into new routines  
1014        exf_radiation, exf_wind
1015      - add new parameters and constants: longwave emissivity for ocean, ice
1016        and snow, evaporation parameters over ice
1017      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1018        either wind from stress or stress from wind
1019    o pkg/thSIce:
1020    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1021    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1022       and THSICE_CALC_THICKN
1023    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1024    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1025      to make debugging easier.
1026    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1027    o pkg/bulk_force:
1028      - clean-up comments and parameters ;
1029      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1030    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1031      generate new output for test-experiment: aim.5l_cs.thSI
1032    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1033      testreport accordingly
1034    
1035    checkpoint58e_post
1036    o SEAICE_CGRID adjoint done
1037    o R_STAR adjoint implemented.
1038      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1039      * need to sort out init. of h0facc, etc.
1040    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1041      to be able to use it in pure forward.
1042    
1043    checkpoint58d_post
1044    o upgrade simple test-experiment to tutorial example:
1045     step.1: duplicate the experiment and (step.2) will remove the old copy.
1046      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1047      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1048      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1049      tutorial_global_oce_biogeo    <- copy of dic_example
1050      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1051      tutorial_plume_on_slope       <- copy of plume_on_slope
1052      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1053      tutorial_global_oce_optim     <- empty for now (David ?)
1054      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1055     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1056    o correct a sign problem in cost_scat.F
1057    o obcs and ptracers: fix boundary conditions for advections schemes
1058      with larger stencil
1059    o thsice adjoint: start
1060    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1061      completeness
1062    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1063      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1064    o ptracers adjoint:
1065      * avoid extensive recomputatations
1066      * fix missing re-init. of gptr (missed by TAF)
1067    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1068      me to turn off the excessive output to STDOUT that this package produces
1069    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1070      and add those terms in Vector-Invariant formulation.
1071    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1072      if the control period (xx_hfluxperiod etc) is 0
1073    o in profiles pkg, clean routines and fix details
1074    o in ecco pkg, reading ssh data:
1075      fix problem in case the model does not start at iter0=0
1076    o fix mnc-pickup/restart for ptracers
1077    o new package prifiles:
1078      code to compute profile-based cost by Gael Forget
1079      (modifs in ecco, ctrl, autodiff)
1080    o Benign bug fix in initialization (spotted by M. Mazloff) of
1081      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1082    
1083    checkpoint58c_post
1084    o adjoint: finish NLFS adjoint and provide reference output in
1085      verification/global_ocean.90x40x15/results_ad_nlfs
1086    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1087      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1088      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1089      with SEAICE_CGRID defined.
1090    o move calendarDumps from "data" to "data.cal" and clean-up the code
1091      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1092    o add useEXF & useCAL flags (for now, set in hard-coded way)
1093    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1094      (were missing in NH mode, and wrong in quasihydrostatic mode).
1095      waiting for Chris updated version of calc_gw to add those CALLs.
1096    o fix bug in quasihydrostatic S/R ;
1097      add a test for this option: global_ocean.90x40x15.qshyd
1098    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1099      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1100    o add on/off flag useOffLine for package OFFLINE
1101    o seaice:
1102      - modify advection so that it works also on the C-grid
1103      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1104        problem in multi-tile runs with C-grid
1105      - add flags for clipping ice velocities and/or masking solver forcing
1106      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1107        C-grid solver
1108      - added a few comments to seaice_diffusion.F
1109      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1110        are now exclusive)
1111      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1112        required re-ordering the code a little:
1113       + make DAIRN global variable (defined in SEAICE)
1114       + move computation of the viscosities eta and zeta into a new separate
1115         routine (because I need to recompute them in seaice_ocean_stress.F)
1116    
1117    checkpoint58b_post
1118    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1119      update output.txt of exp. aim.5l_cs.thSI
1120    o various mnc cleanups and improvements:
1121      + shrink lookup tables by factor of ~4
1122      + better error reporting when running out of lookup space
1123      + able to handle longer path/file names (up to 500 chars)
1124    o adjoint:
1125      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1126      - TBD: "hidden" mom_vecinv recomp. in dynamics
1127    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1128     (allow to differentiate between forcing components using new integer flags:
1129      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1130     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1131    o ecco
1132      - enable trend removal from SSH anomaly obs.
1133    o adjoint
1134      - a fix for PmEpR when #undef EXACT_CONSERV
1135      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1136      - try to fix "hidden" recomp. in forward_step for NLFS
1137        (NLFS seems broken sometimes after I checked it in)
1138    o seaice:
1139     - add c-grid version of the dynamic solver:
1140       + three new routines that are the c-grid substitute lsr, dynsolver
1141         and ostres
1142       + put a few fields that were local to dynsolver into global common
1143         blocks, so that I can move the computation of stresses etc into
1144         seaice_lsr (saves coding but may break the adjoint).
1145     - replace more hardwired parameters by runtime parameters
1146     - add ice masks that mask the rhs of the implicit solvers where there
1147       is no ice (commented out in seaice_dynsolver, because i am not sure
1148       if this works properly), eventually this should replace the clipping
1149       of ice velocities in seaice_dynsolver to +/-40cm/s.
1150    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1151      include it only where its needed
1152    o move balancing of fluxes before the call of external_forcing_surf
1153    o seaice:
1154      - correct units of turning angles (now they are really in degrees)
1155      - move computation of GWATX/Y out of main routine into dynsolver
1156      - initialize GWATX/Y in seaice_init
1157    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1158      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1159    o seaice: add runtime flags for turning angles (default to zero)
1160    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1161      and trend from exf forcing and ctrl control adjustments
1162    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1163      (since checkpoint57x_post)
1164    o change the default rotation period to 86164.s = the Earth rotation
1165    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1166      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1167    o seaice advection: add code for choosing between the default (2nd order
1168      central differences) and multiDim advection schemes provided by
1169      pkg/generic_advdiff
1170    o seaice:
1171      - removed all references to SEAICE_GRID.h fields from
1172        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1173        (cubed-sphere configuration will change a little)
1174      - grid computations in seaice_init are obsolete now.
1175      - cleaned up code a little so that is easier to read (hopefully).
1176      - added new (better?) discretizations of default advection and diffusion
1177        (turn on with SEAICEuseFluxForm)
1178      - replace 1 in 3d global fields by kSurface in growth.F
1179      
1180    checkpoint58a_post
1181    o seaice:
1182      - bug fix in advect.F
1183    o shelfice:
1184      - separate shelfice load anomaly from pload (breaks with time
1185        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1186        Its default is 0., but it may be computed more cleverly from (unknown)
1187        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1188        done offline. A good approximation of the pressure load anomaly is
1189        necessary to avoid large initial adjustment processes underneath
1190        deep-reaching shelfice.
1191      - small fix in ISOMIP shelfice_thermodynamics
1192      - add more sophisticated thermodynamics of Hellmer (1989), this is
1193        now the default
1194      - give a few constants more intuitive names
1195    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1196      if bulk formulae are used in long integration (especially EmPmR). Turn
1197      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1198      if balancePrintMean, the imbalance that is substracted is printed to
1199      STDOUT.
1200    o fix bug (typo) in obcs_apply_eta.F
1201    o add a new package shelfice which enables us to model the circulation
1202      underneath shelf-ice with draughts of hundreds of meters.
1203     - works
1204     - to do: + include improved thermodynamics
1205              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1206                instead of new field kTopC
1207              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1208                instead of new field R_shelfIce and new code in ini_depth.F
1209                and ini_mask_etc.F?
1210              + adjust vertical mixing schemes?
1211    o seaice pkg:
1212     - add a cpp-flag to include a simple formula for a salinity dependent
1213       freezing point of sea water at the surface
1214     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1215       meridional stresses are now different (and hopefully correct)
1216    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1217       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1218       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1219    o pkg/diagnostics: add options and parameters for regional-statistics
1220       diagnostics ; define regions by reading a region-mask from a file
1221       (might add other options later)
1222    o pkg/bulk_force:
1223     - add option and parameters to use AIM surface-flux formulae.
1224     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1225       others forcing fields (defined in PARM05, parameter file "data") are loaded
1226       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1227     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1228     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1229     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1230       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1231     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1232    
1233    checkpoint58
1234    o add "--embed-source" option to genmake2 which, when the supporting
1235      tools can be compiled (as determined by genmake2) will turn on the
1236      embed_files package which then embeds the entire MITgcm source code
1237      (*.[fFhc] + Makefile) used for the build within the executable
1238      - requested by CNH but off by default
1239      - adds a paltry <9MB to the mitgcmuv executable in most cases
1240      - only writes the output when useEMBEDSRC in eedata is true
1241    o clean up 3-dim. relaxation codes:
1242      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1243      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1244      * Thanks to Tom Haine for testing!
1245    
1246    checkpoint57z_post
1247    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1248      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1249    o fix the pickup behavior for obcs in combination with ptracers
1250    o fix a bug in ptracers_external_fields_load
1251    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1252      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1253    o transfered surface NH pressure to eta field (if exactConserv).
1254    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1255         and update lab_sea output.txt file.
1256    o completing 3-dim. relaxation code: additional term
1257         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1258      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1259      * At compile time, in "EXF_OPTIONS.h" set
1260          #define  ALLOW_CLIMTEMP_RELAXATION
1261          #define  ALLOW_CLIMSALT_RELAXATION
1262      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1263          tauThetaClimRelax3Dim = 15552000.0,
1264          tauSaltClimRelax3Dim  = 15552000.0,
1265      * 3 cases:
1266          1) Use a constant-in-time 3-dim. field
1267          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1268          3) Real-time relax. to time-evolving prescribed field
1269    o Adding Laplacian-type smoothness constraint on
1270      initial and boundary (forcing) controls (ic, bc)
1271      * enable at compile-time via
1272        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1273      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1274      * Absolute scale somewhat unclear so far
1275      * no area weighting was included since no other cost term does so far
1276    
1277    checkpoint57y_post
1278    First step for a NLFS adjoint
1279    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1280    o new init. routines for calc_r_star, calc_surf_dr
1281    o still need to deal with ini_masks_etc
1282    o testreport seemed happy
1283    checkpoint57y_pre
1284    
1285    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1286    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1287    o add new offset feature to offline pkg (plus minor cleanup)
1288    o cfc fixes for final year of integration
1289    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1290      be in GCHEM_OPTIONS).
1291    
1292    checkpoint57x_post
1293    o fix testreport Pb in multiple test experiment.
1294    o cleanup our namelist syntax in verification:
1295      - make it more F95 standards compliant (some work still needed)
1296      - allows the vast majority of our tests to work with gfortran
1297    o Non-Hydrostatic:
1298     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1299     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1300    o Allow to apply AB on T,S rather than on AB(gT,gS):
1301     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1302     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1303       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1304     - need a "clever" read_pickup to restart from the other AB formulation
1305    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1306    o remove some unused variables (reduces number of compiler warnings)
1307    o adjoint
1308      * Disable useVariableViscosity for adjoint for time being
1309        (there are a number of extensive recomputations)
1310      * Initialize certain variables needed for adjoint
1311    
1312    checkpoint57w_post
1313    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1314                 fix the singleCpuIO RS version of MDSWRITEFIELD
1315       and add a WARNING if using globalFiles=T with multi-processors.
1316    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1317      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1318    o tracer advection scheme:
1319      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1320       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1321       was not very convenient).
1322      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1323       (further tests needed for the implicit DST & Flux-Limiter schemes).
1324    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1325      and sRef for convenience, handy, when you want to initialize
1326      ptracers in a large domain with a constant non-zero value. Also,
1327      untangle ptracers_init.F a little.
1328    
1329    checkpoint57v_post
1330    o change dome exp. to use variable viscosity in side-drag terms.
1331    o remove all the files from the cfc_offline test since they are now
1332      incorporated into tutorial_cfc_offline which has been producing
1333      identical results for a few days of testing
1334    o add new parameter: sideDragFactor to enable half-slip-side BC
1335      and change side-drag S/R to use viscosity from mom_calc_visc
1336      (can switch back by setting sideDragFactor=0.); affects results at
1337      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1338       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1339    o vorticity & strain are now computed without masking, to account for
1340      no-slip-side BC in variable viscosity calculation ; mask is applied
1341      anyway later on, before computing advection/coriolis terms.
1342    o modify exp4 to test new obcs support for reading from external files
1343      and for passive tracers
1344    o fix behavior of ptracers_monitor when monitor output is written to a
1345      netcdf-file; still not independent of monitor.F (writes in the same
1346      file).
1347    o change default value of tRef (put a uniform, meaningful value for ocean
1348      & atmos) and initialize sRef (was missing, as Martin mentioned).
1349    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1350      to be proportional to enstrophy dissipation length.  Thus,
1351       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1352      This is now consistent with Smagorinsky and with the manual.
1353    
1354    checkpoint57u_post
1355    o OBCS and PTRACERS: add open boundary support for passive tracers
1356      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1357        OB-values from file; this is not different from the way theta and salinity
1358        are treated
1359      - however, Orlanski-radiation conditions are not supported, and the model
1360        will stop if you use pTracers and Orlanski at the same time.
1361      - beefed up the rountine obcs_external_fields_load: now only those open
1362        boundary values are overwritten with values from files for which there
1363        are really files, otherwise the OB-fields remain untouched. This makes
1364        it possible to use different OBs at different ends of the domain (as
1365        with EXF)
1366    o reduce number of exch calls in shap_filt (s2).
1367    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1368      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1369    
1370    checkpoint57t_post
1371    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1372    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1373      same truncation, independent of the face number: affects affects several
1374      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1375    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1376      note that biharmonic viscosity + no-slip was not tested in any experiment.
1377    o fix bug in non-linear free-surf side-drag ; generate new output for
1378      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1379    o make mnc honor the writeBinaryPrec flag for most kinds of output
1380    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1381    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1382      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1383    o add brackets in multi-terms sum to get same truncation, independent of
1384      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1385      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1386    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1387      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1388      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1389      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1390      Suggested values of viscosity parameters found in mom_calc_visc.
1391      Many new viscosity diagnostics available.
1392    
1393    checkpoint57s_post
1394    o Add clearing-house for viscosity calculations, mom_calc_visc and
1395      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1396      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1397      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1398      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1399      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1400      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1401      ViscAhStrain and viscAhTension are now retired.
1402    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1403    o In response to JMC's bug report, genmake2 now ignores any soft-links
1404      that it finds in the *current* directory when searching for files.
1405      Soft-links found in any other source directories will still work as
1406      they did before.
1407    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1408      a C routine to unlimit the stack size
1409    o mnc-ify pkg/aim snapshot vars
1410    o mnc-ify pkg/land as requested by Daniel
1411    o various changes to mnc including:
1412      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1413      - output can now be grouped so that all files within a group
1414          change the ITER portion of their names in lock-step together
1415      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1416          and works with both EXCH1 and EXCH2 (but needs more testing)
1417      - writing works for all verification test cases w/ g77 on Linux
1418    
1419    checkpoint57r_post
1420    o make MNC variable initialization happen earlier
1421    o add diagnostics for (almost) each term of the momentum Eq.
1422    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1423    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1424    o remove MINIMAL_TAVE_OUTPUT option ;
1425      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1426    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1427      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1428    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1429    o add time-dependent SST, SSS control
1430    o cost terms in ecco/ modularized (new cost_generic.F)
1431    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1432    o new infrastructure for seaice model vs. obs misfits in seaice/
1433      * driver from the_main_loop.F is seaice_cost_driver.F
1434      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1435      * gradient check in Exp. 6a of natl_box_adjoint/
1436    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1437      (see README file)
1438    
1439    checkpoint57q_post
1440    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1441    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1442      - bug was reported by Jean-Michel and Ian Fenty
1443    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1444      update exp. cpl_aim+ocn output.
1445    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1446      Needed for high-res. runs with large global files
1447      to be able to limit tapelev size
1448    o Changed some tests for adjoint:
1449      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1450      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1451      * global_ocean.90x40x15/ back to default 3-level checkpointing
1452    o Modifications to enable scripted COMMON to MODULE conversion
1453      * verification/OpenAD/code/ has necessary scripts and description;
1454      * converts, compiles and runs successfully;
1455    
1456    checkpoint57p_post
1457    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1458    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1459      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1460    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1461    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1462      (was already the case for dissipation with mom_vecinv,
1463       and also the case for grad.PhiHyd when staggered-timeStep)
1464      This will allow to put dissipation out-off the AB time-stepping.
1465     Unfortunately, affects truncation error. Update output of exp. that "fails"
1466      (cg2d matching number) and leave the others for later: front_relax(10),
1467      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1468      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1469    
1470    checkpoint57o_post
1471    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1472      (2) its ready to be documented during the 20050801 DocFest
1473    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1474      for ideal_2D_oce and lab_sea on linux_ia32_g77
1475    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1476      in global1x1_tot/code_seaice_adj to access indices 32, 33
1477      (worth another tag)
1478    
1479    checkpoint57n_post
1480    o adding precip control xx_precip 32
1481    o adding swflux control xx_swflux 33
1482    o Replacing 10 forcing penalty cost routines by 1 generic.
1483    o Implementing partitioning in time-mean and variable adjustment
1484      for atmos. state.
1485    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1486  o in natl_box_adjoint:  o in natl_box_adjoint:
1487    * updated: results_bulk/    * updated exp 1 to 10
1488    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1489    o updated global1x1/*_seaice_adj/
1490      to incorporate latest changes
1491    o enable useSingleCpuIO for mdsio vector routines
1492      (applies in particular to tapelev I/O)
1493    o removed inefficient K-loop in all active_file*control*.F
1494    
1495  checkpoint57m_post  checkpoint57m_post
1496  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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