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revision 1.636 by jmc, Mon Mar 20 21:54:37 2006 UTC revision 1.973 by jmc, Thu Apr 10 13:56:08 2008 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    checkpoint59p
8    o gchem / dic / cfc :
9      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
10      - add new parameter files: "data.dic" & "data.cfc" ;
11      - various re-arrangement in initialisation & header file ;
12      - fix tutorial_global_oce_biogeo for multi-threaded test.
13    o pkg/dic: test for "pickup_dic" file when restarting ;
14      if no pickup-file, can restart with a re-initialised pH (same as it did
15      before) providing pickupStrictlyMatch is set to False.
16    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
17      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
18    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
19      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
20    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
21     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
22       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
23    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
24       scheme to use for vorticty-term ;
25     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
26       (with default selectVortScheme, return to original discretisation)
27     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
28    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
29    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
30      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
31      also fix diagnostics VISCAHW & VISCA4W.
32    
33    checkpoint59o
34    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
35    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
36      move a few statemens out the main loop into separate loops
37    o pkg/shelfice:
38      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
39        (kg/m^2/s), does not break tests, because in verification/isomip,
40        rhoConstFresh=rhoConst (by accident)
41      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
42      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
43        new file model/src/seawater.F, so that they are available for all pkgs.
44      - convert potential temperature into in-situ temperature. This changes the
45        isomip tests => update tests
46    o add a flag writePickupAtEnd (default=true) to be able to suppress
47      writing a pickup at the last timestep
48    o tools/mpack-1.6 :
49      - disable automake (not working) and autoconf (not needed).
50      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
51        also cleaner with much less compilation warnings.
52    o pkg/profiles:
53      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
54      (for "less than 32 characters name" compiler requirement)
55    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
56      conditions that have a different sampling frequency than S/T/U/V obcs
57    o pkg/diagnostics (stats-diags):
58      - fix global Min/Max in case 1 processor get only empty tiles
59    o genmake2: replace (4 times)
60         make genmake_tc_1.o >> genmake_warnings 2>&1
61      with
62         COMM="$CC $CFLAGS -c genmake_tc_1.c"
63         echo $COMM >> genmake_warnings
64         $COMM >> genmake_warnings 2>&1
65      to make genmake2 always see the value of CC as specified in the optfile.
66    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
67      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
68      - modify verification advect_cs test to test SOM-advection on CS-grid.
69    o pkg/ctrl:
70      - Rewrite of ctrl_map_ini_ecco.F,
71        introducing a generic routine (ctrl_map_ini_gen.F).
72      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
73    
74    checkpoint59n
75    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
76      number in dedicate array "hdiag":
77      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
78        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
79      - many small changes (integer format) for large number of diagnostics
80      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
81        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
82    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
83      usingSphericalGrid, this allows to define the rotated grid coordinates
84      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
85      geographical coordinates according to the inverse of the rotation defined
86      by the Euler angles, so that Coriolis parameter and online-interpolation by
87      exf works with the geographical coordinates on XC/YC/XG/YG.
88      Naturally, this feature does not work with all packages, so some
89      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
90      profiles), because there the coordinates are assumed to be regular
91      spherical grid coordinates.
92    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
93      - introduce isopycnal diffusion coefficient control.
94    o tools/adjoint_options:
95      - additional control vector components.
96    o pkg/mnc: have mnc create marginally meaning full coordinate variables
97      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
98    o pkg/mypackage:
99      - add example of read/write pickup for state-var ;
100      - add entry points to the main code for state-vars diags & write-pickup.
101    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
102      transitions for useExfYearlyFields
103      - add new subroutine that determines the file to read from for
104        use*YearlyFields = .TRUE. and .FALSE.
105      - add a verification experiment to global_with_exf that tests
106        useExfYearlyFields with USE_EXF_INTERPOLATION defined
107    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
108      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
109      subroutines (which could be generated from a template, because they are
110      almost identical), for now they are included in obcs_prescribe_read.F for
111      simplicity
112    o pkg/exf:
113      - add a little more diagnostic to exf_interp_read (in analogy to
114        mds_read_field, can be turned off with debugLevel < debugLevA=1)
115      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
116        ugly but fast by unrolling short inner loops, inserting a unroll=8
117        directive in routine lagran, and splitting a loop and making do while the
118        outermost loop (the latter requires the intoduction of index arrays)
119    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
120    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
121      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
122    o verification/seaice_obcs: updated for restart test and latest options
123    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
124      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
125      for now this is only available for the C-grid code and also within
126      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
127    
128    checkpoint59m
129    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
130      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
131    o gad_som : fix flux output (& diagnostics) to have same units as other  
132      advection scheme fluxes (was previously multiplied by deltaT).  
133    o added verification/seaice_obcs both to test seaice open boundaries
134      and to provide an example matlab scrpt for generating them
135    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
136    o pkg/salt_plume: clean up salt_plume_frac.F to
137      remove redundancy in PlumeMethod 1 and 4
138    o pkg/kpp: added saltplume diagnostics
139    o pkg/obcs and pkg/seaice:
140      - do not set uice and vice to zero when OB*icefile are unspecified
141      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
142      - moved seaice tracer obcs after call to seaice_growth
143    o pkg/salt_plume: added various options for salt plume depth
144      criterion and for vertical distribution of the salt
145    
146    checkpoint59l
147    o pkg/ptracers: new version of ptracers pickup:
148      read meta file and write only fields which are needed to restart.
149      ( same logic as main pickup file ; also using pickupStrictlyMatch )
150    o pkg/seaice:
151      - add timescale for melting due to warm mixed layer as a means of
152        setting SEAICE_availHeatFrac more conveniently
153      - add a CPP-flag/runtime parameter check for flooding algorithm
154      - reformulated availHeat in seaice_growth.F to be independent of AREA
155    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
156      unit changes
157    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
158    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
159      SX vector computer.
160    o pkg/seaice:
161      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
162        seaice forcing fields can now be read only through pkg/exf
163      - removed some unused halos
164    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
165    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
166      or U/VICE from U/VWIND before computing U/VSTRESS
167    
168    checkpoint59k
169    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
170      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
171    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
172      all experiments pass when compile with un-initialised var. checking option.
173    o added pkg/salt_plume
174    o script to test restart (for now, in MITgcm_contrib/jmc_script)
175    o pkg/seaice: new read/write pickup version.
176      read meta file and write only fields which are needed to restart.
177      ( same logic as main pickup file ; also using pickupStrictlyMatch )
178    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
179    o lab_sea.hb87: modify the domain & update output.hb87.txt :
180      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
181      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
182      process. Fixed here by closing the domain at the Northern boundary.
183    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
184    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
185      a set of consecutive levels in/from a 3-D array.
186    o pkg/ptracers:
187      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
188      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
189    
190    checkpoint59j
191    o in pkgs: dic, obcs, offline, rbcs:
192      standard way to compute coeff. for time interpolation between 2 time reccords
193      which retains full precision (& make results less dependent on compiler).
194      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
195    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
196      packages instead of reading ice cover and wind speed separately
197    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
198     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
199      to allow to compile customized code before the update)
200    o cleaning-up:
201      - fix CPP instruction syntax in pkg/obcs
202      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
203        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
204      - fix some threads issue in IO parts.
205    o pkg/dic:
206      - add tons of "_d 0" (--> much better testreports !)
207       and then update outputs of tutorial_global_oce_biogeo
208    o pkg/mom_fluxform:
209      add a special version of momentum advection intended to conserve momentum
210      next to a bathymetry step or a coastline edge. (default = off = #undef)
211    o new read/write pickup version:
212      - for now, only implemented for main (mdsio) pickup file.
213      - write out only what is needed to restart; merge pickup_nh , pickup_ph
214        and main pickup together.
215      - read meta file; read only what is needed to restart; stop if a field
216        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
217        if it make sense (even if the restart is not perfect).
218      - if no meta file, assume that pickup to read corresponds exactly to
219        a pickup that would currently be written.
220      - read pickup written in the old format (until checkpoint59i) if it
221        recognizes an old meta file (no field-list).
222      - add a meta file in exp. which starts from a pickup: 2 cases:
223        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
224         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
225        b) a meta file describing the content of the associated pickup file
226         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
227    o pkg/mdsio & pkg/rw:
228      - new routine to read a meta file ; new set of routine to read
229        Multiple-fields file (with meta file).
230    o added open boundary conditions capability for seaice
231        HSNOW, HSALT, UICE, and VICE
232    
233    checkpoint59i
234    o adjoint:
235      * fix multiDimAdvection adjoint
236        (partial recomputation problem by TAF for fVerT(:,:,kDown)
237        and comlev1 size definition (maxpass vs. max. number of tracers)
238      * verification/global_ocean.90x45x15 adjoint now tests
239        NLFS and multiDimAdvection using DST3 (=30)
240      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
241    o pkg/kpp: add "_d 0" to real constant (if missing);
242      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
243      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
244    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
245      for internal parameters related to restart process (formerly from PARAMS.h)
246      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
247    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
248      as argument. (only atm2d & obcs write_pickup have not yet been updated)
249    o pkg/monitor:
250      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
251      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
252      - account for deep Atmosphere factor and density factor (anelastic)
253    o added open boundary conditions capability for seaice HEFF and AREA
254    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
255      thermodynamics
256      - requires a little reorganization, which affects the testreport results
257        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
258        so that now the conservative form is tested
259      - add a few comments
260    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
261    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
262    o add new diagnostics to seaice: advective, diffusive fluxes (only for
263      multidim-advection, for scheme 2 they are not filled) and transports,
264      thermodynamic growth rates
265    o change units of EmPmR (inside the code, + within coupling interface)
266      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
267      Affects results @ truncation level (cg2d match) and update output of
268       experiments: lab_sea(6), global_ocean.90x40x15(10),
269      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
270      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
271      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
272      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
273    
274    checkpoint59h
275    o pkg/exf:
276      - improve vectorization by moving if-statement out of loops in
277        exf_mapfields, exf_radiation
278      - exf_bulkformulae.F: introduce 2D fields and vectorize code
279    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
280    o testreport:
281      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
282        monitor & update offline_exf_seaice exp. output.
283      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
284    o pkg/seaice:
285      - bug fix in the evp solver: boundary conditions were affected be
286        masking of zMax/zMin (changes results)
287      - minor bug fix in boundary conditions in seaice_calc_strainrates
288        (changes results for no_slip)
289      - seaice_lsr.F: make interpolation of eta dependent on boundaries
290      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
291      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
292        stress formulation and no-slip boundary conditions
293    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
294      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
295    o pkg/seaice: a first HSALT time stepping equation has been checked in
296    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
297      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
298      without requiring DO-IF statements
299    o pkg/thsice:
300      use continuous power-law function for partition of energy between lateral
301      melting/freezing and thinning/thickening ; old code using step function
302      still available with #undef THSICE_FRACEN_POWERLAW
303      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
304    o testreport: change AD testing : check against results/output_adm.txt
305      using same scripts as for forward test.
306    
307    checkpoint59g
308    o adjoint testing: in preparation for changing testreport:
309      - output format: cost and grad written on separated lines
310      - ad output results in directory "results" (instead of "results_ad")
311    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
312    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
313    o pkg/ecco: allow user defined cost function contributions
314    o testreport:
315      Allow to choose (per experiment) the list of tested output variables
316       and the main variable (used to issue a pass/FAIL ) ;
317      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
318      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
319      Also modify printing of summary:
320       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
321       b) echo the list of tested variables in the individual summary.txt of
322          each experiment.
323    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
324      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
325      (but still depend on the tile decompostion of the domain).
326    o pkg/seaice: change a discretization detail to make the B-grid code
327      "more symmetric". This change is likely to remove all "ridges/leads" that
328      where quasi-aligned with the grid in B-grid solutions. It may also be
329      the solution to the stress coupling issues with the B-grid.
330    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
331      remove .cvsignore from input dir. (since testreport no longer run here).
332    o pkg/thsice:
333     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
334     - fix reshaping of sea-ice just after advection:
335       melt all the ice only if ice-volume is too small.
336     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
337       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
338     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
339    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
340      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
341    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
342      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
343      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
344      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
345      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
346      -> update output.txt
347    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
348     this affects truncation error: -> update output.txt of exp:
349      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
350      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
351    
352    checkpoint59f
353    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
354    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
355      a bounded range (in forward mode)
356    o pkg/ecco, ctrl, autodiff and mom_common:
357     internal parameter controls, completements of implementations
358    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
359    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
360      (not seem any difference in testing results).
361    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
362       at face corners.
363    o pkg/generic_advdiff:
364     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
365      loop range indices for computing vertical advection tendency
366      and do the calculation in the interior only (no overlap) ;
367      for now, only implemented for SOM advection (to save CPU time).
368     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
369    o exch2 adjoint
370      First set of changes:
371      - add exch2 hand-written adjoint templates
372      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
373        This will require cleanup in pkg/autodiff/*.F
374        (changed routines currently kept separate in verif. code/)
375      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
376        that used to hide exch2 or cubed-sphere specific code
377        (commented via 'cph-exch2')
378    o pkg/seaice
379      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
380    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
381       output of global_ocean.cs32x15.thsice .
382    
383    checkpoint59e
384    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
385      for B-grid vector (not yet tested) and C-grid vector (<- only used
386      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
387    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
388      (#ifdef ALLOW_SALT_PLUME)
389    o gather_2d/scatter_2d: removed halo regions
390    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
391      scheme and the corresponding test case (under front_relax dir). For now,
392      only available with Skew-flux form and not yet tested in realistic set-up.
393      adjoint: store directives updated, but gradient checks deteriorated,
394      so maybe GM/Redi adjoint is now broken.
395    o seaice adjoint
396      * add AREA, HEFF, HSNOW as control variable
397        (should not change lab_sea results)
398      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
399    o pkg/seaice:
400      * added computation of saltFlux in seaice_growth;
401        For time being, sea ice salinity is assumed constant
402        contribution of snow flooding to freshening of sea ice is neglected.
403        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
404        defaults to 0.0 in order to maintain backward compatibility.
405        Typical values for SEAICE_salinity are 4 to 10 g/kg.
406      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
407      * added SEAICE_availHeatFrac, which specifies fraction of surface level
408        heat content used to melt or grow ice
409      * commented out cap of HICE: it helps keep ice thinner
410      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
411      * applied OBCS T/S mask to HEFFM sea ice mask
412    
413    checkpoint59d
414    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
415     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
416     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
417    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
418     and change default value of parameter "GM_Small_Number";
419     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
420       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
421       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
422    o pkg/ecco: cost function when applying pkg/smooth to controls
423    o pkg/ctrl: add forcingPrecond run time parameter
424    o pkg/seaice:
425     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
426     - fix bug in metric terms of u-equation in LSR solver (implicit part),
427       changes verification/lab_sea
428     - rearrange implicit part of u-equation in LSR solver to make it easier to
429       read, understand, and debug. This causes changes at the truncation level.
430     - fix (serious) bug in the boundary conditions (sign error in the implicit
431       part) of the LSR solver. Changes all LSR results.
432     - fixed problem with HSNOW initialization to avoid thick snow when AREA
433       is initilized with small values - does not change lab_sea results.
434     - added HsnowFile initialization capability
435    o pkg/smooth: addition to model/src and pkg/ctrl so allow
436     initialization of pkg/smooth and application to control vector
437    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
438    o dependencies: pkg/profiles requires pkg/cal
439    o pkg/profiles:
440     - added option ALLOW_PROFILES_GENERICGRID
441         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
442         that interpolation information (grid points and coefficients) is provided
443         within the netcdf input files.
444         -> sample matlab scripts can be found in MITgcm_contrib/gael
445         that allow you to prepare netcdf input files.
446     - also modified: cleaner include statements, cleaner error print statements,
447       cleaner stops when error, and more tests of the netcdf input files consistency.
448    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
449    o pkg/seaice:
450     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
451       requires a new routine: seaice_diagnostics_fill.F
452     - make sure that seaice does not move if not forced (pressure replacement
453       method, Hibler and Ip, 1995), changes results
454     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
455     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
456       It is turned off by default (=-1.), because it changes the results.
457     - make it possible to read AREA from a file, too.
458    
459    checkpoint59c
460    o add S/R and diagnostics for oceanic mixed-layer depth
461    o move GMRedi call after all vertical mixing schemes (including KPP)
462    o pkg/thsice:
463     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
464      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
465    o pkg/obcs:
466     - bug fix for balance code
467    o pkg/seaice:
468      - allow values of SEAICE_elasticParm > 1
469      - add new parameter SEAICE_evpTauRelax as an alternative
470        to SEAICE_elasticParm
471      - make lsr boundary conditions free slip (by default), changes result
472      - add code for no slip boundary conditions for lsr
473      - set minimum of zeta to zero (and not 4e8) (changes results)
474      - add a cap on AREA after advecting AREA if seaice_growth is not called
475    o change calculation of Visbeck K:
476      - no longer depend on tapering scheme; instead, compute slope (limited
477        by GM_maxSlope). this is equivalent to what was comuted before with
478        clipping or linear tappering.
479      - fix vertical averaging (wrong by 1/2 level)
480      - leave the old version (but will not be maintained) within
481        #ifdef OLD_VISBECK_CALC / #endif
482      - update output of exp. ideal_2D_oce
483    o change error catch in calc_r_star to improve vectorization
484    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
485      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
486    o adjoint:
487      Re-organized adjoint checkpointing according to Matt Mazloff
488      (but with modifs/completions/cleanups)
489      Storing is now bundled into large arrays to optimized I/O
490      (and second step in cleanup of the_main_loop)
491    
492    checkpoint59b
493    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
494      - export/import (between ocean & coupler) fields needed for ocean DIC.
495    o pkg/seaice:
496      - get rid of three more exchanges seaice_calc_viscosities (required
497        different loop boundaries in seaice_lsr and seaice_ocean_stress)
498      - bug fix in seaice_ocean_stress (update of lab_sea required)
499      - reduce loop boundaries to necessary minimum also in seaice_evp
500      - go back to the old way of computing deltaC/Z as the adjoint likes that
501        better
502    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
503      passive tracer to an Age Tracer) + update output.txt
504    o pkg/exf:
505      - implement A-grid / C-grid selection for wind-stress input files.
506      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
507      for now, in exf_bulk_largeyeager04.F only :
508      - change implementation for case where windspeed + 2. components wind-stress
509        are read-in. AND use rhoConstFresh to convert evap.
510    o pkg/seaice:
511      - use correct EXCH_UV for wind-forcing (on A-grid).
512      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
513        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
514    o pkg/exf:
515      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
516      EXF_INTERPOLATION:
517      - merge global_with_exf/code version of exf_interp_read.F
518        to the main code ;
519      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
520        reading the file ; Important: This options needs to be defined to recover
521        previous code.
522        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
523      - no longer loose real*8 precision along the way when using exf_iprec=64.
524    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
525      - change discretisation of evp-solver in order to avoid another exchange
526        (changes lab_sea) and clean up a little
527      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
528        help the adjoint (this also changes the results slightly)
529      - add a few "_d 0" where they had been missing in seaice_evp.F
530      - cleaning up: remove unused seaice_calc_rhs.F
531    o pkg/exf: some cleaning-up:
532      - change various "constants" into runtime parameters
533      - cleaned-up Large&Yeager04 routine which should eventually
534        replace exf_bulkformulae.F (changed names of S/R and CPP)
535        and merged various ALLOW_ATM_WIND options
536     only used with thsice pkg (in thsice_get_exf.F):
537      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
538        which are used when useStabilityFct_overIce=TRUE (= the default)
539      - change default values of ice & snow emissivity and scale downward LW
540        by ice & snow emissivity.
541    o pkg/thsice:
542     fix few little problems, in thsice_calc_thickn.F:
543      - growth vertically (and not laterally) if iceFrac == iceMaskMax
544      - melt only laterally if hIce < hThinIce (as the comments say)
545      and in thsice_extend.F:
546      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
547      - start to form ice as soon as the minimum ice-volume is reachable.
548     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
549      and cpl_aim+ocn
550    o pkg/kpp
551     - move computation of surface related input fields to KPP into a new
552       subroutine kpp_forcing_surf.F
553     - remove wrong (within bi,bj loops) EXCH calls.
554     - little cleaning (add argument myThid in last position, cvs header ...)
555     - for now, fix conservation problem by exchanging KPPviscAz (may not
556       be the best fix)
557    o pkg/seaice
558     - check for inconsistent evp parameter/cpp-flag combination
559     - remove leftover errIO flat for obsolete name list error handling
560    o OpenAD
561     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
562    
563    checkpoint59a
564    o pkg/seaice: some parameter clarifications and a little bit of clean up
565    o pkg/thsice: rename run-time parameters:
566       himin       -> hIceMin
567       himin0      -> hThinIce
568       hihig       -> hThickIce
569       i0          -> i0swFrac
570       transCoef   -> bMeltCoef
571       frac_energy -> fracMelting
572      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
573       with default values (for now) that do not change the results.
574      remove old version of thsice vars advection in pkg/seaice.
575    o in FFIELDS.h:
576      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
577      - make pLoad & sIceLoad always available (but still only used if
578         ATMOSPHERIC_LOADING is #define).
579    o pkg/kpp: replaced _KPP_RL with _RL
580    o bug fixes for vertical diffusivity computations when both KPP and
581        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
582        are no longer updating the vertical diffusivity array
583        (passed as argument) but are (re-) setting those arrays.
584    o pkg/seaice: fix bug in evp solver, while doing that
585      - change (improve?) discretization of stress computations for both
586        cgrid-lsr and evp solver
587      - add a new routine to compute strain rates
588      - the above changes lab_sea results
589      - add no slip conditions for evp solver (off by default), lsr-version
590        may follow
591      - fix exchange for shear at Z-points (does not change lab_sea)
592      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
593        (to force the user to pick a time step since there is not "safe" way
594        of choosing it)
595      - add principal stress diagnostics
596      - rearrange fields for evp a little to avoid having to call a: too many
597        exchanges and b: exchanges for stress trensor components which we do
598        not have.
599      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
600        of evp, complete rewrite for lsr case (latter is does not yet work
601        in all cases)
602    o pkg/kpp: add code to have mixing in shelf ice caverns
603      - add myThid to all kpp routines (long overdue)
604    
605    checkpoint59
606    o pkg/exf:
607      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
608        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
609      - move exf header files from lower_case.h to UPPER_CASE.h ;
610        add missing cvs Header & Name
611      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
612      - add namelist param. selectStressGridPosition, exf_monFreq
613      - retire many _CLIM routines, and remove data.exf_clim
614        + params moved to data.exf
615        + climsst, climsss now handled by exf_set_gen, i.e.
616          climss?period=0 refers to constant field,
617          climss?period=-12 to monthly forcing
618      - split up namelists in data.exf
619    o pkg/seaice:
620      - remove seaice_exch and seaice_exch_uv
621      - remove superfluous exchange of theta
622      - add myThid to seaice_budget_ocean/ice
623      - add new interface for atmospheric wind forcing (C-grid only)
624        + new routine
625        + two new field (taux, tauy for stress over ice)
626        + removed one global field (DAIRN) for C-grid case only
627    o pkg/thsise
628      - 2nd set of modifs for thsice adjoint in conjunction with exf
629    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
630    
631    checkpoint58y_post
632    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
633      vertical diffusivity, similar to that in MOM4; turned on using
634      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
635      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
636    o Added capability for 3D specification of background vertical diffusion
637      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
638      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
639      "data" file that contains the 3D vertical diffusivity coefficients.
640    o ice dynamics (pkg/seaice) with thsice thermodynamics:
641      - add code within pkg thsice to advect & diffuse sea-ice fields
642      similar to (and will replace) what has been added in  seaice_advdiff.F,
643      but: - conserving Mass, Heat & Salt.
644           - better when using non-linear advection scheme (not yet fully tested)
645           - can also be used in atmospheric set-up (for now, only the diffusion).
646    
647    checkpoint58x_post
648    o IO option for global-file compact format:
649      - add options when generating topology (utils/exch2/matlab-topology-generator)
650      - add I/O capability (pkg/mdsio).
651      - adapt utils/matlab/rdmds.m to read this format.
652      for now long-line format not yet supported by pkg/mdsio (& exch2).
653    o shelfice: add a few diagnostics
654    
655    checkpoint58w_post
656    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
657      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
658      (and replace horiVertRatio in NH code).
659      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
660                         and tutorial_plume_on_slope (sensitive to truncation)
661    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
662      directly to drive seaice model (C-grid only)
663    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
664     - reintroduce computation of wind from stress,
665     - compute tau (in exf_bulkformulae.F) from windstress averaged to
666       mass points to avoid tau = 0
667     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
668    o rdmnc.m: make it work with "global" files created with gluemnc
669    o rdmnc.m : some improvements in dealing with singleton dimension
670      (tested on all testreport mnc output files).
671    o genmake2: disable pkg/profiles if netcdf test fails.
672    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
673    o move call to cal_readparms up to make calendar parameters/variable available
674      to all packages
675    
676    checkpoint58v_post
677    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
678      useDynP_inEos_Zc tested.
679    o pkg/exf: changes to properly interpolate/mask/scale initial fields
680    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
681      and portions thereof.  See read_cs.txt for description and examples.
682    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
683      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
684      following the great-circle arc between those 2 points.
685    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
686      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
687    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
688     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
689     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
690     - still needs work (not working with some options ; efficiency to improve)
691       and serious testing.
692     - use this scheme for temperature & salinity in 2 advection test exp.:
693       advect_xy & advect_xz, respectively.
694    
695    checkpoint58u_post
696    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
697    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
698    o testreport: add option "-skipdir" to skip some test.
699    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
700      momentum calculation.
701    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
702    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
703      remove checkpoint.F and the_correction_step.F (no longer used);
704      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
705    o add option (linFSConserveTr) to correct for tracer source/sink due to
706      Linear Free surface
707    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
708    o pkg/thsice: fix reading mnc-pickups
709    
710    checkpoint58t_post
711    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
712    o pkg/mdsio:
713     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
714       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
715       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
716     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
717     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
718       either MDS_READ_FIELD or MDS_WRITE_FIELD )
719     - new S/R (to replace MDSWRITEMETA), which allows to write more
720       informations (variable names, time ...) to meta files.
721     - modify rdmds.m to give back the meta file content.
722    o pkg/diagnostics: change vertical interpolation to be safer, and more
723       flexible (define p-levels to interpolate to in data.diagnostics);
724      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
725       diagnostic pointer.
726    o pkg/seaice: more cleaning up of seaice_growth, added many comments
727    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
728    o fix multi-category seaice:
729     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
730       SEAICE_MULTICATEGORY
731     - fix short wave heat flux
732    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
733       and allow to use EVP solver. Change forward lab_sea: test both EVP
734       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
735    o Initial check-in of lab_sea adjoint
736      (very similar to natl_box_adjoint/code_seaice)
737      * used C-grid and EVP solver
738      * used KPP, GM/Redi
739      * uses inAdExact=.TRUE.
740      * gradient checks fail for both ADM and TLM
741        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
742        f.d. gradients actually seem more problematic than ADM, TLM gradients;
743        issue is related to forward mismatch between g77 an ifort
744    o pkg/seaice: overhaul of thermodynamics
745     - growth.F and groatb.F are replaced by new routine seaice_growth.F
746     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
747     - move a few global fields out of SEAICE.h into seaice_growth.F and
748       make them 2D (FICE/QNETO/ ...)
749     - remove FO (it is the same as QNETO)
750     - introduce a few local fields to avoid modifying external fields such
751       as atemp, etc.
752    
753    checkpoint58s_post
754    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
755      changed exf_set_gen.F so that
756        genperiod=0 means input file is one time-constant field and
757        genperiod=-12 means input file contains 12 monthly means
758    o CG2D: use pre-computed solver main-diagonal (stored in common block);
759      this affects truncation error ; generate new output file for exp. which
760      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
761        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
762        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
763        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
764        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
765        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
766    o start implementation of deep-atmosphere and anelastic formulation
767    o verification: remove 2nd copy of input files and use script "prepare_run"
768      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
769    o mom_common/vecinv/fluxform: fix a few initialisation isssues
770    o profiles: fix for multithreaded case
771    
772    o diagnostics: rename few diags:
773      s/'PRESSURE'/'RCENTER '/g
774      s/'TICE    '/'oceFreez'/g
775      s/'TAUX    '/'oceTAUX '/g
776      s/'TAUY    '/'oceTAUY '/g
777      s/'SWFLUX  '/'oceQsw  '/g
778      s/DIFx/DFxE/g
779      s/DIFy/DFyE/g
780      and add few ocean-forcing diagnostics:
781      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
782    o modifications to pkg/seaice/growth.F and budget.F, which change results of
783      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
784      as actual snow thickness.  It now refers everywhere to effective snow
785      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
786    
787    checkpoint58r_post
788    o modifications to pkg/seaice/growth.F, which change results of
789      lab_sea experiment: fixes pertain to melting snow over open water, to
790      masking EVAP under sea ice, and to using the correct AREA variable for
791      computations of EVAP, PRECIP, HSNOW, and GHEFF
792    o add ability to read bathy, salt, and theta using MNC (off by def)
793    o add flooding algorithm and advection of HSNOW for pkg/seaice;
794      both are turned off by default and do no change any results
795    o seaice advection with pkg/thsice: a step toward the use of non-linear
796      advection scheme, but #ifdef or commented out for now (requires more EXCH).
797    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
798      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
799      in natl_box (affects results @ truncation level: update output.txt)
800    o multi-threading and IO:
801      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
802      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
803        (needed to work with SingleCpuIO): tested in all verif. exp.
804    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
805      affects the results (but none of the verification test uses this scheme).
806    o Adding some pkg/diagnostics capability to pkg/seaice
807      (will certainly be subject to changes)
808    o ctrl: adding new control variables:
809      lwflux, lwdown, evap, snowprecip, apressure, runoff
810    
811    checkpoint58q_post
812    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
813      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
814      high_res_cube configuration by 4% on Columbia.
815    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
816      add (in global_with_exf/code) a version of EXF_INTERP_READ without
817      dynamical allocation (seems to work in multi-threaded).
818    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
819      single CPU io) so that TAF does not have to see EESUPPORT.h
820    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
821    
822    checkpoint58p_post
823    o obcs: stop if obcs is used with useCDscheme = .true.
824    o shelfice:
825     - fix a sign error so that no slip at shelfice interface works
826     - remove stop for combination non-hydrostatic code and shelfice. That does
827       not mean, that the results are correct, but at least they are numerically
828       stable
829    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
830    o added adjoint exch routined for all exch*3d* routines
831      and updated flow directives
832    
833    checkpoint58o_post
834    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
835      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
836    o change controling S/R for writing pickup file (new S/R do_write_pickup)
837      and clean-up reading/writing of pickup files.
838    o fix local version of read/write pickup (NH part) in rotating_tank/code
839    o simplify EXCH interface:
840     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
841     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
842    o added the regrid package
843    o shelfice:
844     - add a simple boundary layer scheme to reduce noise
845     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
846    
847    checkpoint58n_post
848    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
849       local variable (not in common block).
850    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
851      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
852      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
853        to work with SingleCpuIO.
854    o add "_d 0" to real constant of pkg/cfc subroutines ;
855       update exp. cfc_exemple & tutorial_cfc_offline output files.
856    o multi-threading and IO:
857      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
858        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
859      - barrier before and after reading.
860      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
861      - avoid using MDS_WRITELOCAL for LAND pkg output.
862      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
863        common-block variables ; Allows multi-threading with master-thread IO.
864    o change default MAX_NO_THREADS from 32 to 4 ;
865      and stop cleanly when MAX_NO_THREADS is too small.
866    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
867    
868    checkpoint58m_post
869    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
870       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
871    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
872       keep global_ocean.90x40x15 (for AD testing) with former secondary test
873       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
874    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
875        add MITgcm_tutorials (= code + all the tutorials)
876    o ecco, option to compute cost for total ssh (mean+anom)
877    o consistent with addition of ptracer and ssh in pkg/profiles
878    o profiles: adding ptracer and ssh
879    o testreport: change multi-test output-file name
880      (from output.txt.{name} to output.{name}.txt)
881    o profiles: now ok for mutli-tiles case
882    o seaice: add 4 parameters for different advection schemes for area,
883      (effective) seaice thickness, enthalphy, and snow height. Their default
884      is the standard parameter SEAICEadvScheme
885    o calc_gw:
886     - add cosFacU in zonal viscous flux (harmonic.visc.).
887     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
888       of tutorial_plume_on_slope.
889    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
890    o calc_gw: true flux-form, account for horizontal grid spacing.
891      update rotating_tank results, but not plume_on_slope (affected at
892      truncation level, 11 digits).
893    
894    checkpoint58l_post
895    o calc_gw:
896     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
897     - remove side-drag for now (need to fix it); update plume_on_slope results.
898     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
899    o commit code to make SST/SSS weights spatially variable
900      (based on either variable in-situ or variable initial T/S weights)
901    o pkg/ecco:
902      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
903        now based on horizontally varying weights wthetaLev, wsaltLev
904      * cost_averagesflags now returns year indices in addition to day, month
905      * sflux balance is performed on annual basis
906        (sflxumm, sfluxmm2, bal_sfluxmm)
907      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
908        including separate counting and multipliers
909    o pkg/rbcs
910      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
911    
912    checkpoint58k_post
913    o testreport:
914     - always build in dir. "build" (if not there, mkdir build instead of building
915       & running in input)
916     - run in dir run (if it exists), in build otherwise.
917     - call prepare_run (if input/prepare_run exists)
918     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
919    o pkg/exf modifications to interpolation and rotation routines for more
920       reasonable treatment of North Pole singularity: for tracers North Pole
921       value is set to northernmost zonal-mean value, for zonal velocity it is
922       set to zero, and for meridional velocity it is set to northernmost value.
923    o pkg/exf/exf_check_range.F
924     - add tile index to diagnostics and move stop statement to the very
925       end of the routine.
926    o pkg/diagnostics: (diagnostics_main_init.F)
927      define title of isomorphic variables according to the current config.
928    o pkg/thsice with pkg/seaice dynamics:
929    - fix domain of computation (interior only, required for exf) and do exchanges
930    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
931    o towards a standard way of dealing with multi-threading in MONITOR
932      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
933    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
934       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
935    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
936    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
937    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
938       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
939    o tracer advection:
940     - clean-up and simplify calc_common_factors.F
941     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
942       advection subroutine (but still not used within DST advection S/R)
943    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
944    
945    checkpoint58j_post
946    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
947      from file (collects calls previously in FORWARD_STEP)
948    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
949    o adjoint store dir. adjusted accordingly
950    o genmake2
951      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
952    
953    checkpoint58i_post
954    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
955      on wind stress (SEAICEstressFactor defaults to 1.)
956    o Total number of Timers is finite (<=40): comment out 2 non-essential one
957      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
958    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
959      on CS-grid: no longer loosing mass.
960    o exf & curvilinear-grid: no longer modify longitude xC & xG.
961    o pkg/ggl90: fix sloppy output and fix a bug
962    o pkg/seaice: added SEAICEuseEVPpickup parameter
963      - Set to false in order to start EVP solver with
964        non-EVP pickup files when using SEAICEuseEVP
965      - fix sign error in diffusion in seaice_calc_rhs
966    
967    checkpoint58h_post
968    * Modifications for bottom topography control
969      o replace hFacC by _hFacC at various places
970      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
971      o add non-self-adjoint cg2d_nsa
972      o update autodiff support routines
973      o re-initialise hfac after ctrl_depth_ini
974      o works for 5x5 box, doesnt work for global_ocean.90x40x15
975    * Adding verification for 5x5 box (4-layer) bottom topography control
976    
977    checkpoint58g_post
978    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
979       used for mean seasonal cycle, mean diurnal cycle); add an example
980       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
981    o pkg/ggl90:
982      - add parameter (minimum surface kinetic energy)
983      - fix bug (avoiding division by zero)
984    o couple pkg/thsice to pkg/seaice:
985      - modify advection in seaice to accomodate new scalar fields to be advected
986      - only muliDimAdection scheme work with seaice/thsice
987      - mapping of thsice-variables to seaice-variables, back and forth
988      - does not break the verification experiments, but does not give the
989        desired results either
990    o pkg/seaice
991      - make (default) second order advection a bit less confusing?
992    
993    checkpoint58f_post
994    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
995      to pkg/seaice):
996      - new routines thsice_map_exf and thsice_get_exf provide the interface
997      - add an additional formal parameter to thsice_solve4temp
998    o pkg/exf:
999      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1000      - correct Stefan-Boltzmann constant
1001      - new parameter for longwave surface emittance
1002      - separate some stuff from exf_bulkformulae into new routines  
1003        exf_radiation, exf_wind
1004      - add new parameters and constants: longwave emissivity for ocean, ice
1005        and snow, evaporation parameters over ice
1006      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1007        either wind from stress or stress from wind
1008    o pkg/thSIce:
1009    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1010    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1011       and THSICE_CALC_THICKN
1012    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1013    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1014      to make debugging easier.
1015    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1016    o pkg/bulk_force:
1017      - clean-up comments and parameters ;
1018      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1019    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1020      generate new output for test-experiment: aim.5l_cs.thSI
1021    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1022      testreport accordingly
1023    
1024    checkpoint58e_post
1025    o SEAICE_CGRID adjoint done
1026    o R_STAR adjoint implemented.
1027      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1028      * need to sort out init. of h0facc, etc.
1029    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1030      to be able to use it in pure forward.
1031    
1032    checkpoint58d_post
1033    o upgrade simple test-experiment to tutorial example:
1034     step.1: duplicate the experiment and (step.2) will remove the old copy.
1035      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1036      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1037      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1038      tutorial_global_oce_biogeo    <- copy of dic_example
1039      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1040      tutorial_plume_on_slope       <- copy of plume_on_slope
1041      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1042      tutorial_global_oce_optim     <- empty for now (David ?)
1043      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1044     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1045    o correct a sign problem in cost_scat.F
1046    o obcs and ptracers: fix boundary conditions for advections schemes
1047      with larger stencil
1048    o thsice adjoint: start
1049    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1050      completeness
1051    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1052      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1053    o ptracers adjoint:
1054      * avoid extensive recomputatations
1055      * fix missing re-init. of gptr (missed by TAF)
1056    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1057      me to turn off the excessive output to STDOUT that this package produces
1058    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1059      and add those terms in Vector-Invariant formulation.
1060    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1061      if the control period (xx_hfluxperiod etc) is 0
1062    o in profiles pkg, clean routines and fix details
1063    o in ecco pkg, reading ssh data:
1064      fix problem in case the model does not start at iter0=0
1065    o fix mnc-pickup/restart for ptracers
1066    o new package prifiles:
1067      code to compute profile-based cost by Gael Forget
1068      (modifs in ecco, ctrl, autodiff)
1069    o Benign bug fix in initialization (spotted by M. Mazloff) of
1070      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1071    
1072    checkpoint58c_post
1073    o adjoint: finish NLFS adjoint and provide reference output in
1074      verification/global_ocean.90x40x15/results_ad_nlfs
1075    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1076      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1077      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1078      with SEAICE_CGRID defined.
1079  o move calendarDumps from "data" to "data.cal" and clean-up the code  o move calendarDumps from "data" to "data.cal" and clean-up the code
1080    with a simple call to pkg/cal S/R: CAL_TIME2WRITE    with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1081  o add useEXF & useCAL flags (for now, set in hard-coded way)  o add useEXF & useCAL flags (for now, set in hard-coded way)

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