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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.983 by mlosch, Mon Apr 28 14:25:30 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/obcs: change default to OBCSfixTopo = .true.,
8  o moved ptracer ctrl index 17 -> 32    - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
9      - replace "debugMode" with "debugLevel .GE. debLevB"
10    o implementation of TAF directives for gchem,cfc,dic
11    o remove "exp5" (replaced by tutorial_deep_convection).
12    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
13      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
14      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
15      --> changes results in exp4, seaice_obcs
16    o tutorial_deep_convection :
17      update the set-up and increase resolution and domain size ; start
18      from pseudo initial conditions = output at t=120mn in order to see
19      something happening when running testreport.
20    o pkg/seaice: add os7mp as an advection scheme
21                  add check for advection schemes
22                  add a flag for restoring T and S underneath sea ice
23    o pkg/my82: add netcdf-support and diagnostics
24    o thsice pkg:
25      - Now hsMax limits snow height by turning it into ice following
26        flooding scheme (and now conserving energy)
27      - Slight rewriting of the formula in thsice_calc_thick.F
28      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
29      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
30    
31    checkpoint59p
32    o gchem / dic / cfc :
33      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
34      - add new parameter files: "data.dic" & "data.cfc" ;
35      - various re-arrangement in initialisation & header file ;
36      - fix tutorial_global_oce_biogeo for multi-threaded test.
37    o pkg/dic: test for "pickup_dic" file when restarting ;
38      if no pickup-file, can restart with a re-initialised pH (same as it did
39      before) providing pickupStrictlyMatch is set to False.
40    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
41      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
42    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
43      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
44    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
45     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
46       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
47    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
48       scheme to use for vorticty-term ;
49     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
50       (with default selectVortScheme, return to original discretisation)
51     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
52    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
53    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
54      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
55      also fix diagnostics VISCAHW & VISCA4W.
56    
57    checkpoint59o
58    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
59    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
60      move a few statemens out the main loop into separate loops
61    o pkg/shelfice:
62      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
63        (kg/m^2/s), does not break tests, because in verification/isomip,
64        rhoConstFresh=rhoConst (by accident)
65      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
66      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
67        new file model/src/seawater.F, so that they are available for all pkgs.
68      - convert potential temperature into in-situ temperature. This changes the
69        isomip tests => update tests
70    o add a flag writePickupAtEnd (default=true) to be able to suppress
71      writing a pickup at the last timestep
72    o tools/mpack-1.6 :
73      - disable automake (not working) and autoconf (not needed).
74      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
75        also cleaner with much less compilation warnings.
76    o pkg/profiles:
77      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
78      (for "less than 32 characters name" compiler requirement)
79    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
80      conditions that have a different sampling frequency than S/T/U/V obcs
81    o pkg/diagnostics (stats-diags):
82      - fix global Min/Max in case 1 processor get only empty tiles
83    o genmake2: replace (4 times)
84         make genmake_tc_1.o >> genmake_warnings 2>&1
85      with
86         COMM="$CC $CFLAGS -c genmake_tc_1.c"
87         echo $COMM >> genmake_warnings
88         $COMM >> genmake_warnings 2>&1
89      to make genmake2 always see the value of CC as specified in the optfile.
90    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
91      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
92      - modify verification advect_cs test to test SOM-advection on CS-grid.
93    o pkg/ctrl:
94      - Rewrite of ctrl_map_ini_ecco.F,
95        introducing a generic routine (ctrl_map_ini_gen.F).
96      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
97    
98    checkpoint59n
99    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
100      number in dedicate array "hdiag":
101      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
102        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
103      - many small changes (integer format) for large number of diagnostics
104      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
105        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
106    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
107      usingSphericalGrid, this allows to define the rotated grid coordinates
108      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
109      geographical coordinates according to the inverse of the rotation defined
110      by the Euler angles, so that Coriolis parameter and online-interpolation by
111      exf works with the geographical coordinates on XC/YC/XG/YG.
112      Naturally, this feature does not work with all packages, so some
113      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
114      profiles), because there the coordinates are assumed to be regular
115      spherical grid coordinates.
116    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
117      - introduce isopycnal diffusion coefficient control.
118    o tools/adjoint_options:
119      - additional control vector components.
120    o pkg/mnc: have mnc create marginally meaning full coordinate variables
121      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
122    o pkg/mypackage:
123      - add example of read/write pickup for state-var ;
124      - add entry points to the main code for state-vars diags & write-pickup.
125    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
126      transitions for useExfYearlyFields
127      - add new subroutine that determines the file to read from for
128        use*YearlyFields = .TRUE. and .FALSE.
129      - add a verification experiment to global_with_exf that tests
130        useExfYearlyFields with USE_EXF_INTERPOLATION defined
131    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
132      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
133      subroutines (which could be generated from a template, because they are
134      almost identical), for now they are included in obcs_prescribe_read.F for
135      simplicity
136    o pkg/exf:
137      - add a little more diagnostic to exf_interp_read (in analogy to
138        mds_read_field, can be turned off with debugLevel < debugLevA=1)
139      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
140        ugly but fast by unrolling short inner loops, inserting a unroll=8
141        directive in routine lagran, and splitting a loop and making do while the
142        outermost loop (the latter requires the intoduction of index arrays)
143    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
144    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
145      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
146    o verification/seaice_obcs: updated for restart test and latest options
147    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
148      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
149      for now this is only available for the C-grid code and also within
150      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
151    
152    checkpoint59m
153    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
154      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
155    o gad_som : fix flux output (& diagnostics) to have same units as other  
156      advection scheme fluxes (was previously multiplied by deltaT).  
157    o added verification/seaice_obcs both to test seaice open boundaries
158      and to provide an example matlab scrpt for generating them
159    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
160    o pkg/salt_plume: clean up salt_plume_frac.F to
161      remove redundancy in PlumeMethod 1 and 4
162    o pkg/kpp: added saltplume diagnostics
163    o pkg/obcs and pkg/seaice:
164      - do not set uice and vice to zero when OB*icefile are unspecified
165      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
166      - moved seaice tracer obcs after call to seaice_growth
167    o pkg/salt_plume: added various options for salt plume depth
168      criterion and for vertical distribution of the salt
169    
170    checkpoint59l
171    o pkg/ptracers: new version of ptracers pickup:
172      read meta file and write only fields which are needed to restart.
173      ( same logic as main pickup file ; also using pickupStrictlyMatch )
174    o pkg/seaice:
175      - add timescale for melting due to warm mixed layer as a means of
176        setting SEAICE_availHeatFrac more conveniently
177      - add a CPP-flag/runtime parameter check for flooding algorithm
178      - reformulated availHeat in seaice_growth.F to be independent of AREA
179    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
180      unit changes
181    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
182    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
183      SX vector computer.
184    o pkg/seaice:
185      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
186        seaice forcing fields can now be read only through pkg/exf
187      - removed some unused halos
188    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
189    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
190      or U/VICE from U/VWIND before computing U/VSTRESS
191    
192    checkpoint59k
193    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
194      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
195    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
196      all experiments pass when compile with un-initialised var. checking option.
197    o added pkg/salt_plume
198    o script to test restart (for now, in MITgcm_contrib/jmc_script)
199    o pkg/seaice: new read/write pickup version.
200      read meta file and write only fields which are needed to restart.
201      ( same logic as main pickup file ; also using pickupStrictlyMatch )
202    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
203    o lab_sea.hb87: modify the domain & update output.hb87.txt :
204      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
205      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
206      process. Fixed here by closing the domain at the Northern boundary.
207    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
208    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
209      a set of consecutive levels in/from a 3-D array.
210    o pkg/ptracers:
211      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
212      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
213    
214    checkpoint59j
215    o in pkgs: dic, obcs, offline, rbcs:
216      standard way to compute coeff. for time interpolation between 2 time reccords
217      which retains full precision (& make results less dependent on compiler).
218      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
219    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
220      packages instead of reading ice cover and wind speed separately
221    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
222     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
223      to allow to compile customized code before the update)
224    o cleaning-up:
225      - fix CPP instruction syntax in pkg/obcs
226      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
227        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
228      - fix some threads issue in IO parts.
229    o pkg/dic:
230      - add tons of "_d 0" (--> much better testreports !)
231       and then update outputs of tutorial_global_oce_biogeo
232    o pkg/mom_fluxform:
233      add a special version of momentum advection intended to conserve momentum
234      next to a bathymetry step or a coastline edge. (default = off = #undef)
235    o new read/write pickup version:
236      - for now, only implemented for main (mdsio) pickup file.
237      - write out only what is needed to restart; merge pickup_nh , pickup_ph
238        and main pickup together.
239      - read meta file; read only what is needed to restart; stop if a field
240        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
241        if it make sense (even if the restart is not perfect).
242      - if no meta file, assume that pickup to read corresponds exactly to
243        a pickup that would currently be written.
244      - read pickup written in the old format (until checkpoint59i) if it
245        recognizes an old meta file (no field-list).
246      - add a meta file in exp. which starts from a pickup: 2 cases:
247        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
248         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
249        b) a meta file describing the content of the associated pickup file
250         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
251    o pkg/mdsio & pkg/rw:
252      - new routine to read a meta file ; new set of routine to read
253        Multiple-fields file (with meta file).
254    o added open boundary conditions capability for seaice
255        HSNOW, HSALT, UICE, and VICE
256    
257    checkpoint59i
258    o adjoint:
259      * fix multiDimAdvection adjoint
260        (partial recomputation problem by TAF for fVerT(:,:,kDown)
261        and comlev1 size definition (maxpass vs. max. number of tracers)
262      * verification/global_ocean.90x45x15 adjoint now tests
263        NLFS and multiDimAdvection using DST3 (=30)
264      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
265    o pkg/kpp: add "_d 0" to real constant (if missing);
266      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
267      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
268    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
269      for internal parameters related to restart process (formerly from PARAMS.h)
270      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
271    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
272      as argument. (only atm2d & obcs write_pickup have not yet been updated)
273    o pkg/monitor:
274      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
275      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
276      - account for deep Atmosphere factor and density factor (anelastic)
277    o added open boundary conditions capability for seaice HEFF and AREA
278    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
279      thermodynamics
280      - requires a little reorganization, which affects the testreport results
281        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
282        so that now the conservative form is tested
283      - add a few comments
284    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
285    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
286    o add new diagnostics to seaice: advective, diffusive fluxes (only for
287      multidim-advection, for scheme 2 they are not filled) and transports,
288      thermodynamic growth rates
289    o change units of EmPmR (inside the code, + within coupling interface)
290      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
291      Affects results @ truncation level (cg2d match) and update output of
292       experiments: lab_sea(6), global_ocean.90x40x15(10),
293      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
294      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
295      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
296      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
297    
298    checkpoint59h
299    o pkg/exf:
300      - improve vectorization by moving if-statement out of loops in
301        exf_mapfields, exf_radiation
302      - exf_bulkformulae.F: introduce 2D fields and vectorize code
303    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
304    o testreport:
305      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
306        monitor & update offline_exf_seaice exp. output.
307      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
308    o pkg/seaice:
309      - bug fix in the evp solver: boundary conditions were affected be
310        masking of zMax/zMin (changes results)
311      - minor bug fix in boundary conditions in seaice_calc_strainrates
312        (changes results for no_slip)
313      - seaice_lsr.F: make interpolation of eta dependent on boundaries
314      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
315      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
316        stress formulation and no-slip boundary conditions
317    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
318      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
319    o pkg/seaice: a first HSALT time stepping equation has been checked in
320    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
321      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
322      without requiring DO-IF statements
323    o pkg/thsice:
324      use continuous power-law function for partition of energy between lateral
325      melting/freezing and thinning/thickening ; old code using step function
326      still available with #undef THSICE_FRACEN_POWERLAW
327      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
328    o testreport: change AD testing : check against results/output_adm.txt
329      using same scripts as for forward test.
330    
331    checkpoint59g
332    o adjoint testing: in preparation for changing testreport:
333      - output format: cost and grad written on separated lines
334      - ad output results in directory "results" (instead of "results_ad")
335    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
336    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
337    o pkg/ecco: allow user defined cost function contributions
338    o testreport:
339      Allow to choose (per experiment) the list of tested output variables
340       and the main variable (used to issue a pass/FAIL ) ;
341      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
342      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
343      Also modify printing of summary:
344       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
345       b) echo the list of tested variables in the individual summary.txt of
346          each experiment.
347    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
348      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
349      (but still depend on the tile decompostion of the domain).
350    o pkg/seaice: change a discretization detail to make the B-grid code
351      "more symmetric". This change is likely to remove all "ridges/leads" that
352      where quasi-aligned with the grid in B-grid solutions. It may also be
353      the solution to the stress coupling issues with the B-grid.
354    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
355      remove .cvsignore from input dir. (since testreport no longer run here).
356    o pkg/thsice:
357     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
358     - fix reshaping of sea-ice just after advection:
359       melt all the ice only if ice-volume is too small.
360     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
361       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
362     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
363    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
364      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
365    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
366      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
367      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
368      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
369      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
370      -> update output.txt
371    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
372     this affects truncation error: -> update output.txt of exp:
373      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
374      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
375    
376    checkpoint59f
377    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
378    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
379      a bounded range (in forward mode)
380    o pkg/ecco, ctrl, autodiff and mom_common:
381     internal parameter controls, completements of implementations
382    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
383    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
384      (not seem any difference in testing results).
385    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
386       at face corners.
387    o pkg/generic_advdiff:
388     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
389      loop range indices for computing vertical advection tendency
390      and do the calculation in the interior only (no overlap) ;
391      for now, only implemented for SOM advection (to save CPU time).
392     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
393    o exch2 adjoint
394      First set of changes:
395      - add exch2 hand-written adjoint templates
396      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
397        This will require cleanup in pkg/autodiff/*.F
398        (changed routines currently kept separate in verif. code/)
399      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
400        that used to hide exch2 or cubed-sphere specific code
401        (commented via 'cph-exch2')
402    o pkg/seaice
403      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
404    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
405       output of global_ocean.cs32x15.thsice .
406    
407    checkpoint59e
408    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
409      for B-grid vector (not yet tested) and C-grid vector (<- only used
410      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
411    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
412      (#ifdef ALLOW_SALT_PLUME)
413    o gather_2d/scatter_2d: removed halo regions
414    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
415      scheme and the corresponding test case (under front_relax dir). For now,
416      only available with Skew-flux form and not yet tested in realistic set-up.
417      adjoint: store directives updated, but gradient checks deteriorated,
418      so maybe GM/Redi adjoint is now broken.
419    o seaice adjoint
420      * add AREA, HEFF, HSNOW as control variable
421        (should not change lab_sea results)
422      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
423    o pkg/seaice:
424      * added computation of saltFlux in seaice_growth;
425        For time being, sea ice salinity is assumed constant
426        contribution of snow flooding to freshening of sea ice is neglected.
427        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
428        defaults to 0.0 in order to maintain backward compatibility.
429        Typical values for SEAICE_salinity are 4 to 10 g/kg.
430      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
431      * added SEAICE_availHeatFrac, which specifies fraction of surface level
432        heat content used to melt or grow ice
433      * commented out cap of HICE: it helps keep ice thinner
434      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
435      * applied OBCS T/S mask to HEFFM sea ice mask
436    
437    checkpoint59d
438    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
439     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
440     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
441    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
442     and change default value of parameter "GM_Small_Number";
443     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
444       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
445       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
446    o pkg/ecco: cost function when applying pkg/smooth to controls
447    o pkg/ctrl: add forcingPrecond run time parameter
448    o pkg/seaice:
449     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
450     - fix bug in metric terms of u-equation in LSR solver (implicit part),
451       changes verification/lab_sea
452     - rearrange implicit part of u-equation in LSR solver to make it easier to
453       read, understand, and debug. This causes changes at the truncation level.
454     - fix (serious) bug in the boundary conditions (sign error in the implicit
455       part) of the LSR solver. Changes all LSR results.
456     - fixed problem with HSNOW initialization to avoid thick snow when AREA
457       is initilized with small values - does not change lab_sea results.
458     - added HsnowFile initialization capability
459    o pkg/smooth: addition to model/src and pkg/ctrl so allow
460     initialization of pkg/smooth and application to control vector
461    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
462    o dependencies: pkg/profiles requires pkg/cal
463    o pkg/profiles:
464     - added option ALLOW_PROFILES_GENERICGRID
465         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
466         that interpolation information (grid points and coefficients) is provided
467         within the netcdf input files.
468         -> sample matlab scripts can be found in MITgcm_contrib/gael
469         that allow you to prepare netcdf input files.
470     - also modified: cleaner include statements, cleaner error print statements,
471       cleaner stops when error, and more tests of the netcdf input files consistency.
472    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
473    o pkg/seaice:
474     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
475       requires a new routine: seaice_diagnostics_fill.F
476     - make sure that seaice does not move if not forced (pressure replacement
477       method, Hibler and Ip, 1995), changes results
478     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
479     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
480       It is turned off by default (=-1.), because it changes the results.
481     - make it possible to read AREA from a file, too.
482    
483    checkpoint59c
484    o add S/R and diagnostics for oceanic mixed-layer depth
485    o move GMRedi call after all vertical mixing schemes (including KPP)
486    o pkg/thsice:
487     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
488      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
489    o pkg/obcs:
490     - bug fix for balance code
491    o pkg/seaice:
492      - allow values of SEAICE_elasticParm > 1
493      - add new parameter SEAICE_evpTauRelax as an alternative
494        to SEAICE_elasticParm
495      - make lsr boundary conditions free slip (by default), changes result
496      - add code for no slip boundary conditions for lsr
497      - set minimum of zeta to zero (and not 4e8) (changes results)
498      - add a cap on AREA after advecting AREA if seaice_growth is not called
499    o change calculation of Visbeck K:
500      - no longer depend on tapering scheme; instead, compute slope (limited
501        by GM_maxSlope). this is equivalent to what was comuted before with
502        clipping or linear tappering.
503      - fix vertical averaging (wrong by 1/2 level)
504      - leave the old version (but will not be maintained) within
505        #ifdef OLD_VISBECK_CALC / #endif
506      - update output of exp. ideal_2D_oce
507    o change error catch in calc_r_star to improve vectorization
508    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
509      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
510    o adjoint:
511      Re-organized adjoint checkpointing according to Matt Mazloff
512      (but with modifs/completions/cleanups)
513      Storing is now bundled into large arrays to optimized I/O
514      (and second step in cleanup of the_main_loop)
515    
516    checkpoint59b
517    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
518      - export/import (between ocean & coupler) fields needed for ocean DIC.
519    o pkg/seaice:
520      - get rid of three more exchanges seaice_calc_viscosities (required
521        different loop boundaries in seaice_lsr and seaice_ocean_stress)
522      - bug fix in seaice_ocean_stress (update of lab_sea required)
523      - reduce loop boundaries to necessary minimum also in seaice_evp
524      - go back to the old way of computing deltaC/Z as the adjoint likes that
525        better
526    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
527      passive tracer to an Age Tracer) + update output.txt
528    o pkg/exf:
529      - implement A-grid / C-grid selection for wind-stress input files.
530      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
531      for now, in exf_bulk_largeyeager04.F only :
532      - change implementation for case where windspeed + 2. components wind-stress
533        are read-in. AND use rhoConstFresh to convert evap.
534    o pkg/seaice:
535      - use correct EXCH_UV for wind-forcing (on A-grid).
536      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
537        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
538    o pkg/exf:
539      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
540      EXF_INTERPOLATION:
541      - merge global_with_exf/code version of exf_interp_read.F
542        to the main code ;
543      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
544        reading the file ; Important: This options needs to be defined to recover
545        previous code.
546        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
547      - no longer loose real*8 precision along the way when using exf_iprec=64.
548    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
549      - change discretisation of evp-solver in order to avoid another exchange
550        (changes lab_sea) and clean up a little
551      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
552        help the adjoint (this also changes the results slightly)
553      - add a few "_d 0" where they had been missing in seaice_evp.F
554      - cleaning up: remove unused seaice_calc_rhs.F
555    o pkg/exf: some cleaning-up:
556      - change various "constants" into runtime parameters
557      - cleaned-up Large&Yeager04 routine which should eventually
558        replace exf_bulkformulae.F (changed names of S/R and CPP)
559        and merged various ALLOW_ATM_WIND options
560     only used with thsice pkg (in thsice_get_exf.F):
561      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
562        which are used when useStabilityFct_overIce=TRUE (= the default)
563      - change default values of ice & snow emissivity and scale downward LW
564        by ice & snow emissivity.
565    o pkg/thsice:
566     fix few little problems, in thsice_calc_thickn.F:
567      - growth vertically (and not laterally) if iceFrac == iceMaskMax
568      - melt only laterally if hIce < hThinIce (as the comments say)
569      and in thsice_extend.F:
570      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
571      - start to form ice as soon as the minimum ice-volume is reachable.
572     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
573      and cpl_aim+ocn
574    o pkg/kpp
575     - move computation of surface related input fields to KPP into a new
576       subroutine kpp_forcing_surf.F
577     - remove wrong (within bi,bj loops) EXCH calls.
578     - little cleaning (add argument myThid in last position, cvs header ...)
579     - for now, fix conservation problem by exchanging KPPviscAz (may not
580       be the best fix)
581    o pkg/seaice
582     - check for inconsistent evp parameter/cpp-flag combination
583     - remove leftover errIO flat for obsolete name list error handling
584    o OpenAD
585     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
586    
587    checkpoint59a
588    o pkg/seaice: some parameter clarifications and a little bit of clean up
589    o pkg/thsice: rename run-time parameters:
590       himin       -> hIceMin
591       himin0      -> hThinIce
592       hihig       -> hThickIce
593       i0          -> i0swFrac
594       transCoef   -> bMeltCoef
595       frac_energy -> fracMelting
596      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
597       with default values (for now) that do not change the results.
598      remove old version of thsice vars advection in pkg/seaice.
599    o in FFIELDS.h:
600      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
601      - make pLoad & sIceLoad always available (but still only used if
602         ATMOSPHERIC_LOADING is #define).
603    o pkg/kpp: replaced _KPP_RL with _RL
604    o bug fixes for vertical diffusivity computations when both KPP and
605        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
606        are no longer updating the vertical diffusivity array
607        (passed as argument) but are (re-) setting those arrays.
608    o pkg/seaice: fix bug in evp solver, while doing that
609      - change (improve?) discretization of stress computations for both
610        cgrid-lsr and evp solver
611      - add a new routine to compute strain rates
612      - the above changes lab_sea results
613      - add no slip conditions for evp solver (off by default), lsr-version
614        may follow
615      - fix exchange for shear at Z-points (does not change lab_sea)
616      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
617        (to force the user to pick a time step since there is not "safe" way
618        of choosing it)
619      - add principal stress diagnostics
620      - rearrange fields for evp a little to avoid having to call a: too many
621        exchanges and b: exchanges for stress trensor components which we do
622        not have.
623      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
624        of evp, complete rewrite for lsr case (latter is does not yet work
625        in all cases)
626    o pkg/kpp: add code to have mixing in shelf ice caverns
627      - add myThid to all kpp routines (long overdue)
628    
629    checkpoint59
630    o pkg/exf:
631      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
632        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
633      - move exf header files from lower_case.h to UPPER_CASE.h ;
634        add missing cvs Header & Name
635      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
636      - add namelist param. selectStressGridPosition, exf_monFreq
637      - retire many _CLIM routines, and remove data.exf_clim
638        + params moved to data.exf
639        + climsst, climsss now handled by exf_set_gen, i.e.
640          climss?period=0 refers to constant field,
641          climss?period=-12 to monthly forcing
642      - split up namelists in data.exf
643    o pkg/seaice:
644      - remove seaice_exch and seaice_exch_uv
645      - remove superfluous exchange of theta
646      - add myThid to seaice_budget_ocean/ice
647      - add new interface for atmospheric wind forcing (C-grid only)
648        + new routine
649        + two new field (taux, tauy for stress over ice)
650        + removed one global field (DAIRN) for C-grid case only
651    o pkg/thsise
652      - 2nd set of modifs for thsice adjoint in conjunction with exf
653    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
654    
655    checkpoint58y_post
656    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
657      vertical diffusivity, similar to that in MOM4; turned on using
658      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
659      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
660    o Added capability for 3D specification of background vertical diffusion
661      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
662      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
663      "data" file that contains the 3D vertical diffusivity coefficients.
664    o ice dynamics (pkg/seaice) with thsice thermodynamics:
665      - add code within pkg thsice to advect & diffuse sea-ice fields
666      similar to (and will replace) what has been added in  seaice_advdiff.F,
667      but: - conserving Mass, Heat & Salt.
668           - better when using non-linear advection scheme (not yet fully tested)
669           - can also be used in atmospheric set-up (for now, only the diffusion).
670    
671    checkpoint58x_post
672    o IO option for global-file compact format:
673      - add options when generating topology (utils/exch2/matlab-topology-generator)
674      - add I/O capability (pkg/mdsio).
675      - adapt utils/matlab/rdmds.m to read this format.
676      for now long-line format not yet supported by pkg/mdsio (& exch2).
677    o shelfice: add a few diagnostics
678    
679    checkpoint58w_post
680    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
681      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
682      (and replace horiVertRatio in NH code).
683      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
684                         and tutorial_plume_on_slope (sensitive to truncation)
685    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
686      directly to drive seaice model (C-grid only)
687    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
688     - reintroduce computation of wind from stress,
689     - compute tau (in exf_bulkformulae.F) from windstress averaged to
690       mass points to avoid tau = 0
691     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
692    o rdmnc.m: make it work with "global" files created with gluemnc
693    o rdmnc.m : some improvements in dealing with singleton dimension
694      (tested on all testreport mnc output files).
695    o genmake2: disable pkg/profiles if netcdf test fails.
696    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
697    o move call to cal_readparms up to make calendar parameters/variable available
698      to all packages
699    
700    checkpoint58v_post
701    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
702      useDynP_inEos_Zc tested.
703    o pkg/exf: changes to properly interpolate/mask/scale initial fields
704    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
705      and portions thereof.  See read_cs.txt for description and examples.
706    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
707      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
708      following the great-circle arc between those 2 points.
709    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
710      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
711    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
712     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
713     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
714     - still needs work (not working with some options ; efficiency to improve)
715       and serious testing.
716     - use this scheme for temperature & salinity in 2 advection test exp.:
717       advect_xy & advect_xz, respectively.
718    
719    checkpoint58u_post
720    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
721    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
722    o testreport: add option "-skipdir" to skip some test.
723    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
724      momentum calculation.
725    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
726    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
727      remove checkpoint.F and the_correction_step.F (no longer used);
728      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
729    o add option (linFSConserveTr) to correct for tracer source/sink due to
730      Linear Free surface
731    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
732    o pkg/thsice: fix reading mnc-pickups
733    
734    checkpoint58t_post
735    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
736    o pkg/mdsio:
737     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
738       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
739       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
740     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
741     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
742       either MDS_READ_FIELD or MDS_WRITE_FIELD )
743     - new S/R (to replace MDSWRITEMETA), which allows to write more
744       informations (variable names, time ...) to meta files.
745     - modify rdmds.m to give back the meta file content.
746    o pkg/diagnostics: change vertical interpolation to be safer, and more
747       flexible (define p-levels to interpolate to in data.diagnostics);
748      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
749       diagnostic pointer.
750    o pkg/seaice: more cleaning up of seaice_growth, added many comments
751    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
752    o fix multi-category seaice:
753     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
754       SEAICE_MULTICATEGORY
755     - fix short wave heat flux
756    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
757       and allow to use EVP solver. Change forward lab_sea: test both EVP
758       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
759    o Initial check-in of lab_sea adjoint
760      (very similar to natl_box_adjoint/code_seaice)
761      * used C-grid and EVP solver
762      * used KPP, GM/Redi
763      * uses inAdExact=.TRUE.
764      * gradient checks fail for both ADM and TLM
765        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
766        f.d. gradients actually seem more problematic than ADM, TLM gradients;
767        issue is related to forward mismatch between g77 an ifort
768    o pkg/seaice: overhaul of thermodynamics
769     - growth.F and groatb.F are replaced by new routine seaice_growth.F
770     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
771     - move a few global fields out of SEAICE.h into seaice_growth.F and
772       make them 2D (FICE/QNETO/ ...)
773     - remove FO (it is the same as QNETO)
774     - introduce a few local fields to avoid modifying external fields such
775       as atemp, etc.
776    
777    checkpoint58s_post
778    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
779      changed exf_set_gen.F so that
780        genperiod=0 means input file is one time-constant field and
781        genperiod=-12 means input file contains 12 monthly means
782    o CG2D: use pre-computed solver main-diagonal (stored in common block);
783      this affects truncation error ; generate new output file for exp. which
784      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
785        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
786        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
787        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
788        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
789        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
790    o start implementation of deep-atmosphere and anelastic formulation
791    o verification: remove 2nd copy of input files and use script "prepare_run"
792      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
793    o mom_common/vecinv/fluxform: fix a few initialisation isssues
794    o profiles: fix for multithreaded case
795    
796    o diagnostics: rename few diags:
797      s/'PRESSURE'/'RCENTER '/g
798      s/'TICE    '/'oceFreez'/g
799      s/'TAUX    '/'oceTAUX '/g
800      s/'TAUY    '/'oceTAUY '/g
801      s/'SWFLUX  '/'oceQsw  '/g
802      s/DIFx/DFxE/g
803      s/DIFy/DFyE/g
804      and add few ocean-forcing diagnostics:
805      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
806    o modifications to pkg/seaice/growth.F and budget.F, which change results of
807      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
808      as actual snow thickness.  It now refers everywhere to effective snow
809      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
810    
811    checkpoint58r_post
812    o modifications to pkg/seaice/growth.F, which change results of
813      lab_sea experiment: fixes pertain to melting snow over open water, to
814      masking EVAP under sea ice, and to using the correct AREA variable for
815      computations of EVAP, PRECIP, HSNOW, and GHEFF
816    o add ability to read bathy, salt, and theta using MNC (off by def)
817    o add flooding algorithm and advection of HSNOW for pkg/seaice;
818      both are turned off by default and do no change any results
819    o seaice advection with pkg/thsice: a step toward the use of non-linear
820      advection scheme, but #ifdef or commented out for now (requires more EXCH).
821    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
822      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
823      in natl_box (affects results @ truncation level: update output.txt)
824    o multi-threading and IO:
825      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
826      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
827        (needed to work with SingleCpuIO): tested in all verif. exp.
828    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
829      affects the results (but none of the verification test uses this scheme).
830    o Adding some pkg/diagnostics capability to pkg/seaice
831      (will certainly be subject to changes)
832    o ctrl: adding new control variables:
833      lwflux, lwdown, evap, snowprecip, apressure, runoff
834    
835    checkpoint58q_post
836    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
837      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
838      high_res_cube configuration by 4% on Columbia.
839    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
840      add (in global_with_exf/code) a version of EXF_INTERP_READ without
841      dynamical allocation (seems to work in multi-threaded).
842    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
843      single CPU io) so that TAF does not have to see EESUPPORT.h
844    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
845    
846    checkpoint58p_post
847    o obcs: stop if obcs is used with useCDscheme = .true.
848    o shelfice:
849     - fix a sign error so that no slip at shelfice interface works
850     - remove stop for combination non-hydrostatic code and shelfice. That does
851       not mean, that the results are correct, but at least they are numerically
852       stable
853    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
854    o added adjoint exch routined for all exch*3d* routines
855      and updated flow directives
856    
857    checkpoint58o_post
858    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
859      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
860    o change controling S/R for writing pickup file (new S/R do_write_pickup)
861      and clean-up reading/writing of pickup files.
862    o fix local version of read/write pickup (NH part) in rotating_tank/code
863    o simplify EXCH interface:
864     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
865     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
866    o added the regrid package
867    o shelfice:
868     - add a simple boundary layer scheme to reduce noise
869     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
870    
871    checkpoint58n_post
872    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
873       local variable (not in common block).
874    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
875      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
876      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
877        to work with SingleCpuIO.
878    o add "_d 0" to real constant of pkg/cfc subroutines ;
879       update exp. cfc_exemple & tutorial_cfc_offline output files.
880    o multi-threading and IO:
881      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
882        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
883      - barrier before and after reading.
884      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
885      - avoid using MDS_WRITELOCAL for LAND pkg output.
886      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
887        common-block variables ; Allows multi-threading with master-thread IO.
888    o change default MAX_NO_THREADS from 32 to 4 ;
889      and stop cleanly when MAX_NO_THREADS is too small.
890    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
891    
892    checkpoint58m_post
893    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
894       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
895    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
896       keep global_ocean.90x40x15 (for AD testing) with former secondary test
897       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
898    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
899        add MITgcm_tutorials (= code + all the tutorials)
900    o ecco, option to compute cost for total ssh (mean+anom)
901    o consistent with addition of ptracer and ssh in pkg/profiles
902    o profiles: adding ptracer and ssh
903    o testreport: change multi-test output-file name
904      (from output.txt.{name} to output.{name}.txt)
905    o profiles: now ok for mutli-tiles case
906    o seaice: add 4 parameters for different advection schemes for area,
907      (effective) seaice thickness, enthalphy, and snow height. Their default
908      is the standard parameter SEAICEadvScheme
909    o calc_gw:
910     - add cosFacU in zonal viscous flux (harmonic.visc.).
911     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
912       of tutorial_plume_on_slope.
913    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
914    o calc_gw: true flux-form, account for horizontal grid spacing.
915      update rotating_tank results, but not plume_on_slope (affected at
916      truncation level, 11 digits).
917    
918    checkpoint58l_post
919    o calc_gw:
920     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
921     - remove side-drag for now (need to fix it); update plume_on_slope results.
922     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
923    o commit code to make SST/SSS weights spatially variable
924      (based on either variable in-situ or variable initial T/S weights)
925    o pkg/ecco:
926      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
927        now based on horizontally varying weights wthetaLev, wsaltLev
928      * cost_averagesflags now returns year indices in addition to day, month
929      * sflux balance is performed on annual basis
930        (sflxumm, sfluxmm2, bal_sfluxmm)
931      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
932        including separate counting and multipliers
933    o pkg/rbcs
934      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
935    
936    checkpoint58k_post
937    o testreport:
938     - always build in dir. "build" (if not there, mkdir build instead of building
939       & running in input)
940     - run in dir run (if it exists), in build otherwise.
941     - call prepare_run (if input/prepare_run exists)
942     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
943    o pkg/exf modifications to interpolation and rotation routines for more
944       reasonable treatment of North Pole singularity: for tracers North Pole
945       value is set to northernmost zonal-mean value, for zonal velocity it is
946       set to zero, and for meridional velocity it is set to northernmost value.
947    o pkg/exf/exf_check_range.F
948     - add tile index to diagnostics and move stop statement to the very
949       end of the routine.
950    o pkg/diagnostics: (diagnostics_main_init.F)
951      define title of isomorphic variables according to the current config.
952    o pkg/thsice with pkg/seaice dynamics:
953    - fix domain of computation (interior only, required for exf) and do exchanges
954    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
955    o towards a standard way of dealing with multi-threading in MONITOR
956      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
957    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
958       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
959    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
960    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
961    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
962       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
963    o tracer advection:
964     - clean-up and simplify calc_common_factors.F
965     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
966       advection subroutine (but still not used within DST advection S/R)
967    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
968    
969    checkpoint58j_post
970    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
971      from file (collects calls previously in FORWARD_STEP)
972    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
973    o adjoint store dir. adjusted accordingly
974    o genmake2
975      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
976    
977    checkpoint58i_post
978    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
979      on wind stress (SEAICEstressFactor defaults to 1.)
980    o Total number of Timers is finite (<=40): comment out 2 non-essential one
981      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
982    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
983      on CS-grid: no longer loosing mass.
984    o exf & curvilinear-grid: no longer modify longitude xC & xG.
985    o pkg/ggl90: fix sloppy output and fix a bug
986    o pkg/seaice: added SEAICEuseEVPpickup parameter
987      - Set to false in order to start EVP solver with
988        non-EVP pickup files when using SEAICEuseEVP
989      - fix sign error in diffusion in seaice_calc_rhs
990    
991    checkpoint58h_post
992    * Modifications for bottom topography control
993      o replace hFacC by _hFacC at various places
994      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
995      o add non-self-adjoint cg2d_nsa
996      o update autodiff support routines
997      o re-initialise hfac after ctrl_depth_ini
998      o works for 5x5 box, doesnt work for global_ocean.90x40x15
999    * Adding verification for 5x5 box (4-layer) bottom topography control
1000    
1001    checkpoint58g_post
1002    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1003       used for mean seasonal cycle, mean diurnal cycle); add an example
1004       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1005    o pkg/ggl90:
1006      - add parameter (minimum surface kinetic energy)
1007      - fix bug (avoiding division by zero)
1008    o couple pkg/thsice to pkg/seaice:
1009      - modify advection in seaice to accomodate new scalar fields to be advected
1010      - only muliDimAdection scheme work with seaice/thsice
1011      - mapping of thsice-variables to seaice-variables, back and forth
1012      - does not break the verification experiments, but does not give the
1013        desired results either
1014    o pkg/seaice
1015      - make (default) second order advection a bit less confusing?
1016    
1017    checkpoint58f_post
1018    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1019      to pkg/seaice):
1020      - new routines thsice_map_exf and thsice_get_exf provide the interface
1021      - add an additional formal parameter to thsice_solve4temp
1022    o pkg/exf:
1023      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1024      - correct Stefan-Boltzmann constant
1025      - new parameter for longwave surface emittance
1026      - separate some stuff from exf_bulkformulae into new routines  
1027        exf_radiation, exf_wind
1028      - add new parameters and constants: longwave emissivity for ocean, ice
1029        and snow, evaporation parameters over ice
1030      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1031        either wind from stress or stress from wind
1032    o pkg/thSIce:
1033    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1034    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1035       and THSICE_CALC_THICKN
1036    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1037    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1038      to make debugging easier.
1039    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1040    o pkg/bulk_force:
1041      - clean-up comments and parameters ;
1042      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1043    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1044      generate new output for test-experiment: aim.5l_cs.thSI
1045    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1046      testreport accordingly
1047    
1048    checkpoint58e_post
1049    o SEAICE_CGRID adjoint done
1050    o R_STAR adjoint implemented.
1051      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1052      * need to sort out init. of h0facc, etc.
1053    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1054      to be able to use it in pure forward.
1055    
1056    checkpoint58d_post
1057    o upgrade simple test-experiment to tutorial example:
1058     step.1: duplicate the experiment and (step.2) will remove the old copy.
1059      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1060      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1061      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1062      tutorial_global_oce_biogeo    <- copy of dic_example
1063      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1064      tutorial_plume_on_slope       <- copy of plume_on_slope
1065      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1066      tutorial_global_oce_optim     <- empty for now (David ?)
1067      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1068     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1069    o correct a sign problem in cost_scat.F
1070    o obcs and ptracers: fix boundary conditions for advections schemes
1071      with larger stencil
1072    o thsice adjoint: start
1073    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1074      completeness
1075    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1076      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1077    o ptracers adjoint:
1078      * avoid extensive recomputatations
1079      * fix missing re-init. of gptr (missed by TAF)
1080    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1081      me to turn off the excessive output to STDOUT that this package produces
1082    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1083      and add those terms in Vector-Invariant formulation.
1084    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1085      if the control period (xx_hfluxperiod etc) is 0
1086    o in profiles pkg, clean routines and fix details
1087    o in ecco pkg, reading ssh data:
1088      fix problem in case the model does not start at iter0=0
1089    o fix mnc-pickup/restart for ptracers
1090    o new package prifiles:
1091      code to compute profile-based cost by Gael Forget
1092      (modifs in ecco, ctrl, autodiff)
1093    o Benign bug fix in initialization (spotted by M. Mazloff) of
1094      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1095    
1096    checkpoint58c_post
1097    o adjoint: finish NLFS adjoint and provide reference output in
1098      verification/global_ocean.90x40x15/results_ad_nlfs
1099    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1100      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1101      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1102      with SEAICE_CGRID defined.
1103    o move calendarDumps from "data" to "data.cal" and clean-up the code
1104      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1105    o add useEXF & useCAL flags (for now, set in hard-coded way)
1106    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1107      (were missing in NH mode, and wrong in quasihydrostatic mode).
1108      waiting for Chris updated version of calc_gw to add those CALLs.
1109    o fix bug in quasihydrostatic S/R ;
1110      add a test for this option: global_ocean.90x40x15.qshyd
1111    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1112      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1113    o add on/off flag useOffLine for package OFFLINE
1114    o seaice:
1115      - modify advection so that it works also on the C-grid
1116      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1117        problem in multi-tile runs with C-grid
1118      - add flags for clipping ice velocities and/or masking solver forcing
1119      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1120        C-grid solver
1121      - added a few comments to seaice_diffusion.F
1122      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1123        are now exclusive)
1124      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1125        required re-ordering the code a little:
1126       + make DAIRN global variable (defined in SEAICE)
1127       + move computation of the viscosities eta and zeta into a new separate
1128         routine (because I need to recompute them in seaice_ocean_stress.F)
1129    
1130    checkpoint58b_post
1131    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1132      update output.txt of exp. aim.5l_cs.thSI
1133    o various mnc cleanups and improvements:
1134      + shrink lookup tables by factor of ~4
1135      + better error reporting when running out of lookup space
1136      + able to handle longer path/file names (up to 500 chars)
1137    o adjoint:
1138      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1139      - TBD: "hidden" mom_vecinv recomp. in dynamics
1140    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1141     (allow to differentiate between forcing components using new integer flags:
1142      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1143     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1144    o ecco
1145      - enable trend removal from SSH anomaly obs.
1146    o adjoint
1147      - a fix for PmEpR when #undef EXACT_CONSERV
1148      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1149      - try to fix "hidden" recomp. in forward_step for NLFS
1150        (NLFS seems broken sometimes after I checked it in)
1151    o seaice:
1152     - add c-grid version of the dynamic solver:
1153       + three new routines that are the c-grid substitute lsr, dynsolver
1154         and ostres
1155       + put a few fields that were local to dynsolver into global common
1156         blocks, so that I can move the computation of stresses etc into
1157         seaice_lsr (saves coding but may break the adjoint).
1158     - replace more hardwired parameters by runtime parameters
1159     - add ice masks that mask the rhs of the implicit solvers where there
1160       is no ice (commented out in seaice_dynsolver, because i am not sure
1161       if this works properly), eventually this should replace the clipping
1162       of ice velocities in seaice_dynsolver to +/-40cm/s.
1163    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1164      include it only where its needed
1165    o move balancing of fluxes before the call of external_forcing_surf
1166    o seaice:
1167      - correct units of turning angles (now they are really in degrees)
1168      - move computation of GWATX/Y out of main routine into dynsolver
1169      - initialize GWATX/Y in seaice_init
1170    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1171      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1172    o seaice: add runtime flags for turning angles (default to zero)
1173    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1174      and trend from exf forcing and ctrl control adjustments
1175    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1176      (since checkpoint57x_post)
1177    o change the default rotation period to 86164.s = the Earth rotation
1178    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1179      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1180    o seaice advection: add code for choosing between the default (2nd order
1181      central differences) and multiDim advection schemes provided by
1182      pkg/generic_advdiff
1183    o seaice:
1184      - removed all references to SEAICE_GRID.h fields from
1185        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1186        (cubed-sphere configuration will change a little)
1187      - grid computations in seaice_init are obsolete now.
1188      - cleaned up code a little so that is easier to read (hopefully).
1189      - added new (better?) discretizations of default advection and diffusion
1190        (turn on with SEAICEuseFluxForm)
1191      - replace 1 in 3d global fields by kSurface in growth.F
1192      
1193    checkpoint58a_post
1194    o seaice:
1195      - bug fix in advect.F
1196    o shelfice:
1197      - separate shelfice load anomaly from pload (breaks with time
1198        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1199        Its default is 0., but it may be computed more cleverly from (unknown)
1200        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1201        done offline. A good approximation of the pressure load anomaly is
1202        necessary to avoid large initial adjustment processes underneath
1203        deep-reaching shelfice.
1204      - small fix in ISOMIP shelfice_thermodynamics
1205      - add more sophisticated thermodynamics of Hellmer (1989), this is
1206        now the default
1207      - give a few constants more intuitive names
1208    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1209      if bulk formulae are used in long integration (especially EmPmR). Turn
1210      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1211      if balancePrintMean, the imbalance that is substracted is printed to
1212      STDOUT.
1213    o fix bug (typo) in obcs_apply_eta.F
1214    o add a new package shelfice which enables us to model the circulation
1215      underneath shelf-ice with draughts of hundreds of meters.
1216     - works
1217     - to do: + include improved thermodynamics
1218              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1219                instead of new field kTopC
1220              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1221                instead of new field R_shelfIce and new code in ini_depth.F
1222                and ini_mask_etc.F?
1223              + adjust vertical mixing schemes?
1224    o seaice pkg:
1225     - add a cpp-flag to include a simple formula for a salinity dependent
1226       freezing point of sea water at the surface
1227     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1228       meridional stresses are now different (and hopefully correct)
1229    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1230       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1231       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1232    o pkg/diagnostics: add options and parameters for regional-statistics
1233       diagnostics ; define regions by reading a region-mask from a file
1234       (might add other options later)
1235    o pkg/bulk_force:
1236     - add option and parameters to use AIM surface-flux formulae.
1237     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1238       others forcing fields (defined in PARM05, parameter file "data") are loaded
1239       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1240     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1241     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1242     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1243       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1244     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1245    
1246    checkpoint58
1247    o add "--embed-source" option to genmake2 which, when the supporting
1248      tools can be compiled (as determined by genmake2) will turn on the
1249      embed_files package which then embeds the entire MITgcm source code
1250      (*.[fFhc] + Makefile) used for the build within the executable
1251      - requested by CNH but off by default
1252      - adds a paltry <9MB to the mitgcmuv executable in most cases
1253      - only writes the output when useEMBEDSRC in eedata is true
1254    o clean up 3-dim. relaxation codes:
1255      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1256      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1257      * Thanks to Tom Haine for testing!
1258    
1259    checkpoint57z_post
1260    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1261      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1262    o fix the pickup behavior for obcs in combination with ptracers
1263    o fix a bug in ptracers_external_fields_load
1264    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1265      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1266    o transfered surface NH pressure to eta field (if exactConserv).
1267    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1268         and update lab_sea output.txt file.
1269    o completing 3-dim. relaxation code: additional term
1270         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1271      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1272      * At compile time, in "EXF_OPTIONS.h" set
1273          #define  ALLOW_CLIMTEMP_RELAXATION
1274          #define  ALLOW_CLIMSALT_RELAXATION
1275      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1276          tauThetaClimRelax3Dim = 15552000.0,
1277          tauSaltClimRelax3Dim  = 15552000.0,
1278      * 3 cases:
1279          1) Use a constant-in-time 3-dim. field
1280          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1281          3) Real-time relax. to time-evolving prescribed field
1282    o Adding Laplacian-type smoothness constraint on
1283      initial and boundary (forcing) controls (ic, bc)
1284      * enable at compile-time via
1285        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1286      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1287      * Absolute scale somewhat unclear so far
1288      * no area weighting was included since no other cost term does so far
1289    
1290    checkpoint57y_post
1291    First step for a NLFS adjoint
1292    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1293    o new init. routines for calc_r_star, calc_surf_dr
1294    o still need to deal with ini_masks_etc
1295    o testreport seemed happy
1296    checkpoint57y_pre
1297    
1298    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1299    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1300    o add new offset feature to offline pkg (plus minor cleanup)
1301    o cfc fixes for final year of integration
1302    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1303      be in GCHEM_OPTIONS).
1304    
1305    checkpoint57x_post
1306    o fix testreport Pb in multiple test experiment.
1307    o cleanup our namelist syntax in verification:
1308      - make it more F95 standards compliant (some work still needed)
1309      - allows the vast majority of our tests to work with gfortran
1310    o Non-Hydrostatic:
1311     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1312     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1313    o Allow to apply AB on T,S rather than on AB(gT,gS):
1314     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1315     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1316       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1317     - need a "clever" read_pickup to restart from the other AB formulation
1318    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1319    o remove some unused variables (reduces number of compiler warnings)
1320    o adjoint
1321      * Disable useVariableViscosity for adjoint for time being
1322        (there are a number of extensive recomputations)
1323      * Initialize certain variables needed for adjoint
1324    
1325    checkpoint57w_post
1326    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1327                 fix the singleCpuIO RS version of MDSWRITEFIELD
1328       and add a WARNING if using globalFiles=T with multi-processors.
1329    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1330      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1331    o tracer advection scheme:
1332      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1333       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1334       was not very convenient).
1335      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1336       (further tests needed for the implicit DST & Flux-Limiter schemes).
1337    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1338      and sRef for convenience, handy, when you want to initialize
1339      ptracers in a large domain with a constant non-zero value. Also,
1340      untangle ptracers_init.F a little.
1341    
1342    checkpoint57v_post
1343    o change dome exp. to use variable viscosity in side-drag terms.
1344    o remove all the files from the cfc_offline test since they are now
1345      incorporated into tutorial_cfc_offline which has been producing
1346      identical results for a few days of testing
1347    o add new parameter: sideDragFactor to enable half-slip-side BC
1348      and change side-drag S/R to use viscosity from mom_calc_visc
1349      (can switch back by setting sideDragFactor=0.); affects results at
1350      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1351       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1352    o vorticity & strain are now computed without masking, to account for
1353      no-slip-side BC in variable viscosity calculation ; mask is applied
1354      anyway later on, before computing advection/coriolis terms.
1355    o modify exp4 to test new obcs support for reading from external files
1356      and for passive tracers
1357    o fix behavior of ptracers_monitor when monitor output is written to a
1358      netcdf-file; still not independent of monitor.F (writes in the same
1359      file).
1360    o change default value of tRef (put a uniform, meaningful value for ocean
1361      & atmos) and initialize sRef (was missing, as Martin mentioned).
1362    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1363      to be proportional to enstrophy dissipation length.  Thus,
1364       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1365      This is now consistent with Smagorinsky and with the manual.
1366    
1367    checkpoint57u_post
1368    o OBCS and PTRACERS: add open boundary support for passive tracers
1369      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1370        OB-values from file; this is not different from the way theta and salinity
1371        are treated
1372      - however, Orlanski-radiation conditions are not supported, and the model
1373        will stop if you use pTracers and Orlanski at the same time.
1374      - beefed up the rountine obcs_external_fields_load: now only those open
1375        boundary values are overwritten with values from files for which there
1376        are really files, otherwise the OB-fields remain untouched. This makes
1377        it possible to use different OBs at different ends of the domain (as
1378        with EXF)
1379    o reduce number of exch calls in shap_filt (s2).
1380    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1381      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1382    
1383    checkpoint57t_post
1384    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1385    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1386      same truncation, independent of the face number: affects affects several
1387      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1388    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1389      note that biharmonic viscosity + no-slip was not tested in any experiment.
1390    o fix bug in non-linear free-surf side-drag ; generate new output for
1391      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1392    o make mnc honor the writeBinaryPrec flag for most kinds of output
1393    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1394    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1395      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1396    o add brackets in multi-terms sum to get same truncation, independent of
1397      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1398      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1399    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1400      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1401      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1402      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1403      Suggested values of viscosity parameters found in mom_calc_visc.
1404      Many new viscosity diagnostics available.
1405    
1406    checkpoint57s_post
1407    o Add clearing-house for viscosity calculations, mom_calc_visc and
1408      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1409      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1410      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1411      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1412      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1413      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1414      ViscAhStrain and viscAhTension are now retired.
1415    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1416    o In response to JMC's bug report, genmake2 now ignores any soft-links
1417      that it finds in the *current* directory when searching for files.
1418      Soft-links found in any other source directories will still work as
1419      they did before.
1420    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1421      a C routine to unlimit the stack size
1422    o mnc-ify pkg/aim snapshot vars
1423    o mnc-ify pkg/land as requested by Daniel
1424    o various changes to mnc including:
1425      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1426      - output can now be grouped so that all files within a group
1427          change the ITER portion of their names in lock-step together
1428      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1429          and works with both EXCH1 and EXCH2 (but needs more testing)
1430      - writing works for all verification test cases w/ g77 on Linux
1431    
1432    checkpoint57r_post
1433    o make MNC variable initialization happen earlier
1434    o add diagnostics for (almost) each term of the momentum Eq.
1435    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1436    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1437    o remove MINIMAL_TAVE_OUTPUT option ;
1438      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1439    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1440      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1441    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1442    o add time-dependent SST, SSS control
1443    o cost terms in ecco/ modularized (new cost_generic.F)
1444    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1445    o new infrastructure for seaice model vs. obs misfits in seaice/
1446      * driver from the_main_loop.F is seaice_cost_driver.F
1447      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1448      * gradient check in Exp. 6a of natl_box_adjoint/
1449    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1450      (see README file)
1451    
1452    checkpoint57q_post
1453    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1454    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1455      - bug was reported by Jean-Michel and Ian Fenty
1456    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1457      update exp. cpl_aim+ocn output.
1458    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1459      Needed for high-res. runs with large global files
1460      to be able to limit tapelev size
1461    o Changed some tests for adjoint:
1462      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1463      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1464      * global_ocean.90x40x15/ back to default 3-level checkpointing
1465    o Modifications to enable scripted COMMON to MODULE conversion
1466      * verification/OpenAD/code/ has necessary scripts and description;
1467      * converts, compiles and runs successfully;
1468    
1469    checkpoint57p_post
1470    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1471    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1472      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1473    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1474    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1475      (was already the case for dissipation with mom_vecinv,
1476       and also the case for grad.PhiHyd when staggered-timeStep)
1477      This will allow to put dissipation out-off the AB time-stepping.
1478     Unfortunately, affects truncation error. Update output of exp. that "fails"
1479      (cg2d matching number) and leave the others for later: front_relax(10),
1480      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1481      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1482    
1483    checkpoint57o_post
1484    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1485      (2) its ready to be documented during the 20050801 DocFest
1486    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1487      for ideal_2D_oce and lab_sea on linux_ia32_g77
1488    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1489      in global1x1_tot/code_seaice_adj to access indices 32, 33
1490      (worth another tag)
1491    
1492    checkpoint57n_post
1493    o adding precip control xx_precip 32
1494    o adding swflux control xx_swflux 33
1495    o Replacing 10 forcing penalty cost routines by 1 generic.
1496    o Implementing partitioning in time-mean and variable adjustment
1497      for atmos. state.
1498    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1499  o in natl_box_adjoint:  o in natl_box_adjoint:
1500    * updated: results_bulk/    * updated exp 1 to 10
1501    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1502    o updated global1x1/*_seaice_adj/
1503      to incorporate latest changes
1504    o enable useSingleCpuIO for mdsio vector routines
1505      (applies in particular to tapelev I/O)
1506    o removed inefficient K-loop in all active_file*control*.F
1507    
1508  checkpoint57m_post  checkpoint57m_post
1509  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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