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revision 1.76 by jmc, Fri Jul 12 14:52:08 2002 UTC revision 1.959 by dimitri, Fri Feb 22 20:25:54 2008 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
8      conditions that have a different sampling frequency than S/T/U/V obcs
9    o pkg/diagnostics (stats-diags):
10      - fix global Min/Max in case 1 processor get only empty tiles
11    o genmake2: replace (4 times)
12         make genmake_tc_1.o >> genmake_warnings 2>&1
13      with
14         COMM="$CC $CFLAGS -c genmake_tc_1.c"
15         echo $COMM >> genmake_warnings
16         $COMM >> genmake_warnings 2>&1
17      to make genmake2 always see the value of CC as specified in the optfile.
18    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
19      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
20      - modify verification advect_cs test to test SOM-advection on CS-grid.
21    o pkg/ctrl:
22      - Rewrite of ctrl_map_ini_ecco.F,
23        introducing a generic routine (ctrl_map_ini_gen.F).
24      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
25    
26    checkpoint59n
27    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
28      number in dedicate array "hdiag":
29      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
30        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
31      - many small changes (integer format) for large number of diagnostics
32      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
33        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
34    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
35      usingSphericalGrid, this allows to define the rotated grid coordinates
36      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
37      geographical coordinates according to the inverse of the rotation defined
38      by the Euler angles, so that Coriolis parameter and online-interpolation by
39      exf works with the geographical coordinates on XC/YC/XG/YG.
40      Naturally, this feature does not work with all packages, so some
41      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
42      profiles), because there the coordinates are assumed to be regular
43      spherical grid coordinates.
44    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
45      - introduce isopycnal diffusion coefficient control.
46    o tools/adjoint_options:
47      - additional control vector components.
48    o pkg/mnc: have mnc create marginally meaning full coordinate variables
49      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
50    o pkg/mypackage:
51      - add example of read/write pickup for state-var ;
52      - add entry points to the main code for state-vars diags & write-pickup.
53    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
54      transitions for useExfYearlyFields
55      - add new subroutine that determines the file to read from for
56        use*YearlyFields = .TRUE. and .FALSE.
57      - add a verification experiment to global_with_exf that tests
58        useExfYearlyFields with USE_EXF_INTERPOLATION defined
59    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
60      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
61      subroutines (which could be generated from a template, because they are
62      almost identical), for now they are included in obcs_prescribe_read.F for
63      simplicity
64    o pkg/exf:
65      - add a little more diagnostic to exf_interp_read (in analogy to
66        mds_read_field, can be turned off with debugLevel < debugLevA=1)
67      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
68        ugly but fast by unrolling short inner loops, inserting a unroll=8
69        directive in routine lagran, and splitting a loop and making do while the
70        outermost loop (the latter requires the intoduction of index arrays)
71    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
72    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
73      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
74    o verification/seaice_obcs: updated for restart test and latest options
75    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
76      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
77      for now this is only available for the C-grid code and also within
78      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
79    
80    checkpoint59m
81    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
82      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
83    o gad_som : fix flux output (& diagnostics) to have same units as other  
84      advection scheme fluxes (was previously multiplied by deltaT).  
85    o added verification/seaice_obcs both to test seaice open boundaries
86      and to provide an example matlab scrpt for generating them
87    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
88    o pkg/salt_plume: clean up salt_plume_frac.F to
89      remove redundancy in PlumeMethod 1 and 4
90    o pkg/kpp: added saltplume diagnostics
91    o pkg/obcs and pkg/seaice:
92      - do not set uice and vice to zero when OB*icefile are unspecified
93      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
94      - moved seaice tracer obcs after call to seaice_growth
95    o pkg/salt_plume: added various options for salt plume depth
96      criterion and for vertical distribution of the salt
97    
98    checkpoint59l
99    o pkg/ptracers: new version of ptracers pickup:
100      read meta file and write only fields which are needed to restart.
101      ( same logic as main pickup file ; also using pickupStrictlyMatch )
102    o pkg/seaice:
103      - add timescale for melting due to warm mixed layer as a means of
104        setting SEAICE_availHeatFrac more conveniently
105      - add a CPP-flag/runtime parameter check for flooding algorithm
106      - reformulated availHeat in seaice_growth.F to be independent of AREA
107    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
108      unit changes
109    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
110    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
111      SX vector computer.
112    o pkg/seaice:
113      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
114        seaice forcing fields can now be read only through pkg/exf
115      - removed some unused halos
116    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
117    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
118      or U/VICE from U/VWIND before computing U/VSTRESS
119    
120    checkpoint59k
121    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
122      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
123    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
124      all experiments pass when compile with un-initialised var. checking option.
125    o added pkg/salt_plume
126    o script to test restart (for now, in MITgcm_contrib/jmc_script)
127    o pkg/seaice: new read/write pickup version.
128      read meta file and write only fields which are needed to restart.
129      ( same logic as main pickup file ; also using pickupStrictlyMatch )
130    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
131    o lab_sea.hb87: modify the domain & update output.hb87.txt :
132      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
133      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
134      process. Fixed here by closing the domain at the Northern boundary.
135    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
136    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
137      a set of consecutive levels in/from a 3-D array.
138    o pkg/ptracers:
139      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
140      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
141    
142    checkpoint59j
143    o in pkgs: dic, obcs, offline, rbcs:
144      standard way to compute coeff. for time interpolation between 2 time reccords
145      which retains full precision (& make results less dependent on compiler).
146      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
147    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
148      packages instead of reading ice cover and wind speed separately
149    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
150     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
151      to allow to compile customized code before the update)
152    o cleaning-up:
153      - fix CPP instruction syntax in pkg/obcs
154      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
155        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
156      - fix some threads issue in IO parts.
157    o pkg/dic:
158      - add tons of "_d 0" (--> much better testreports !)
159       and then update outputs of tutorial_global_oce_biogeo
160    o pkg/mom_fluxform:
161      add a special version of momentum advection intended to conserve momentum
162      next to a bathymetry step or a coastline edge. (default = off = #undef)
163    o new read/write pickup version:
164      - for now, only implemented for main (mdsio) pickup file.
165      - write out only what is needed to restart; merge pickup_nh , pickup_ph
166        and main pickup together.
167      - read meta file; read only what is needed to restart; stop if a field
168        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
169        if it make sense (even if the restart is not perfect).
170      - if no meta file, assume that pickup to read corresponds exactly to
171        a pickup that would currently be written.
172      - read pickup written in the old format (until checkpoint59i) if it
173        recognizes an old meta file (no field-list).
174      - add a meta file in exp. which starts from a pickup: 2 cases:
175        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
176         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
177        b) a meta file describing the content of the associated pickup file
178         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
179    o pkg/mdsio & pkg/rw:
180      - new routine to read a meta file ; new set of routine to read
181        Multiple-fields file (with meta file).
182    o added open boundary conditions capability for seaice
183        HSNOW, HSALT, UICE, and VICE
184    
185    checkpoint59i
186    o adjoint:
187      * fix multiDimAdvection adjoint
188        (partial recomputation problem by TAF for fVerT(:,:,kDown)
189        and comlev1 size definition (maxpass vs. max. number of tracers)
190      * verification/global_ocean.90x45x15 adjoint now tests
191        NLFS and multiDimAdvection using DST3 (=30)
192      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
193    o pkg/kpp: add "_d 0" to real constant (if missing);
194      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
195      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
196    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
197      for internal parameters related to restart process (formerly from PARAMS.h)
198      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
199    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
200      as argument. (only atm2d & obcs write_pickup have not yet been updated)
201    o pkg/monitor:
202      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
203      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
204      - account for deep Atmosphere factor and density factor (anelastic)
205    o added open boundary conditions capability for seaice HEFF and AREA
206    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
207      thermodynamics
208      - requires a little reorganization, which affects the testreport results
209        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
210        so that now the conservative form is tested
211      - add a few comments
212    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
213    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
214    o add new diagnostics to seaice: advective, diffusive fluxes (only for
215      multidim-advection, for scheme 2 they are not filled) and transports,
216      thermodynamic growth rates
217    o change units of EmPmR (inside the code, + within coupling interface)
218      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
219      Affects results @ truncation level (cg2d match) and update output of
220       experiments: lab_sea(6), global_ocean.90x40x15(10),
221      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
222      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
223      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
224      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
225    
226    checkpoint59h
227    o pkg/exf:
228      - improve vectorization by moving if-statement out of loops in
229        exf_mapfields, exf_radiation
230      - exf_bulkformulae.F: introduce 2D fields and vectorize code
231    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
232    o testreport:
233      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
234        monitor & update offline_exf_seaice exp. output.
235      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
236    o pkg/seaice:
237      - bug fix in the evp solver: boundary conditions were affected be
238        masking of zMax/zMin (changes results)
239      - minor bug fix in boundary conditions in seaice_calc_strainrates
240        (changes results for no_slip)
241      - seaice_lsr.F: make interpolation of eta dependent on boundaries
242      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
243      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
244        stress formulation and no-slip boundary conditions
245    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
246      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
247    o pkg/seaice: a first HSALT time stepping equation has been checked in
248    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
249      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
250      without requiring DO-IF statements
251    o pkg/thsice:
252      use continuous power-law function for partition of energy between lateral
253      melting/freezing and thinning/thickening ; old code using step function
254      still available with #undef THSICE_FRACEN_POWERLAW
255      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
256    o testreport: change AD testing : check against results/output_adm.txt
257      using same scripts as for forward test.
258    
259    checkpoint59g
260    o adjoint testing: in preparation for changing testreport:
261      - output format: cost and grad written on separated lines
262      - ad output results in directory "results" (instead of "results_ad")
263    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
264    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
265    o pkg/ecco: allow user defined cost function contributions
266    o testreport:
267      Allow to choose (per experiment) the list of tested output variables
268       and the main variable (used to issue a pass/FAIL ) ;
269      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
270      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
271      Also modify printing of summary:
272       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
273       b) echo the list of tested variables in the individual summary.txt of
274          each experiment.
275    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
276      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
277      (but still depend on the tile decompostion of the domain).
278    o pkg/seaice: change a discretization detail to make the B-grid code
279      "more symmetric". This change is likely to remove all "ridges/leads" that
280      where quasi-aligned with the grid in B-grid solutions. It may also be
281      the solution to the stress coupling issues with the B-grid.
282    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
283      remove .cvsignore from input dir. (since testreport no longer run here).
284    o pkg/thsice:
285     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
286     - fix reshaping of sea-ice just after advection:
287       melt all the ice only if ice-volume is too small.
288     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
289       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
290     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
291    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
292      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
293    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
294      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
295      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
296      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
297      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
298      -> update output.txt
299    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
300     this affects truncation error: -> update output.txt of exp:
301      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
302      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
303    
304    checkpoint59f
305    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
306    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
307      a bounded range (in forward mode)
308    o pkg/ecco, ctrl, autodiff and mom_common:
309     internal parameter controls, completements of implementations
310    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
311    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
312      (not seem any difference in testing results).
313    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
314       at face corners.
315    o pkg/generic_advdiff:
316     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
317      loop range indices for computing vertical advection tendency
318      and do the calculation in the interior only (no overlap) ;
319      for now, only implemented for SOM advection (to save CPU time).
320     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
321    o exch2 adjoint
322      First set of changes:
323      - add exch2 hand-written adjoint templates
324      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
325        This will require cleanup in pkg/autodiff/*.F
326        (changed routines currently kept separate in verif. code/)
327      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
328        that used to hide exch2 or cubed-sphere specific code
329        (commented via 'cph-exch2')
330    o pkg/seaice
331      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
332    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
333       output of global_ocean.cs32x15.thsice .
334    
335    checkpoint59e
336    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
337      for B-grid vector (not yet tested) and C-grid vector (<- only used
338      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
339    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
340      (#ifdef ALLOW_SALT_PLUME)
341    o gather_2d/scatter_2d: removed halo regions
342    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
343      scheme and the corresponding test case (under front_relax dir). For now,
344      only available with Skew-flux form and not yet tested in realistic set-up.
345      adjoint: store directives updated, but gradient checks deteriorated,
346      so maybe GM/Redi adjoint is now broken.
347    o seaice adjoint
348      * add AREA, HEFF, HSNOW as control variable
349        (should not change lab_sea results)
350      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
351    o pkg/seaice:
352      * added computation of saltFlux in seaice_growth;
353        For time being, sea ice salinity is assumed constant
354        contribution of snow flooding to freshening of sea ice is neglected.
355        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
356        defaults to 0.0 in order to maintain backward compatibility.
357        Typical values for SEAICE_salinity are 4 to 10 g/kg.
358      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
359      * added SEAICE_availHeatFrac, which specifies fraction of surface level
360        heat content used to melt or grow ice
361      * commented out cap of HICE: it helps keep ice thinner
362      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
363      * applied OBCS T/S mask to HEFFM sea ice mask
364    
365    checkpoint59d
366    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
367     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
368     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
369    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
370     and change default value of parameter "GM_Small_Number";
371     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
372       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
373       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
374    o pkg/ecco: cost function when applying pkg/smooth to controls
375    o pkg/ctrl: add forcingPrecond run time parameter
376    o pkg/seaice:
377     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
378     - fix bug in metric terms of u-equation in LSR solver (implicit part),
379       changes verification/lab_sea
380     - rearrange implicit part of u-equation in LSR solver to make it easier to
381       read, understand, and debug. This causes changes at the truncation level.
382     - fix (serious) bug in the boundary conditions (sign error in the implicit
383       part) of the LSR solver. Changes all LSR results.
384     - fixed problem with HSNOW initialization to avoid thick snow when AREA
385       is initilized with small values - does not change lab_sea results.
386     - added HsnowFile initialization capability
387    o pkg/smooth: addition to model/src and pkg/ctrl so allow
388     initialization of pkg/smooth and application to control vector
389    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
390    o dependencies: pkg/profiles requires pkg/cal
391    o pkg/profiles:
392     - added option ALLOW_PROFILES_GENERICGRID
393         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
394         that interpolation information (grid points and coefficients) is provided
395         within the netcdf input files.
396         -> sample matlab scripts can be found in MITgcm_contrib/gael
397         that allow you to prepare netcdf input files.
398     - also modified: cleaner include statements, cleaner error print statements,
399       cleaner stops when error, and more tests of the netcdf input files consistency.
400    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
401    o pkg/seaice:
402     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
403       requires a new routine: seaice_diagnostics_fill.F
404     - make sure that seaice does not move if not forced (pressure replacement
405       method, Hibler and Ip, 1995), changes results
406     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
407     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
408       It is turned off by default (=-1.), because it changes the results.
409     - make it possible to read AREA from a file, too.
410    
411    checkpoint59c
412    o add S/R and diagnostics for oceanic mixed-layer depth
413    o move GMRedi call after all vertical mixing schemes (including KPP)
414    o pkg/thsice:
415     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
416      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
417    o pkg/obcs:
418     - bug fix for balance code
419    o pkg/seaice:
420      - allow values of SEAICE_elasticParm > 1
421      - add new parameter SEAICE_evpTauRelax as an alternative
422        to SEAICE_elasticParm
423      - make lsr boundary conditions free slip (by default), changes result
424      - add code for no slip boundary conditions for lsr
425      - set minimum of zeta to zero (and not 4e8) (changes results)
426      - add a cap on AREA after advecting AREA if seaice_growth is not called
427    o change calculation of Visbeck K:
428      - no longer depend on tapering scheme; instead, compute slope (limited
429        by GM_maxSlope). this is equivalent to what was comuted before with
430        clipping or linear tappering.
431      - fix vertical averaging (wrong by 1/2 level)
432      - leave the old version (but will not be maintained) within
433        #ifdef OLD_VISBECK_CALC / #endif
434      - update output of exp. ideal_2D_oce
435    o change error catch in calc_r_star to improve vectorization
436    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
437      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
438    o adjoint:
439      Re-organized adjoint checkpointing according to Matt Mazloff
440      (but with modifs/completions/cleanups)
441      Storing is now bundled into large arrays to optimized I/O
442      (and second step in cleanup of the_main_loop)
443    
444    checkpoint59b
445    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
446      - export/import (between ocean & coupler) fields needed for ocean DIC.
447    o pkg/seaice:
448      - get rid of three more exchanges seaice_calc_viscosities (required
449        different loop boundaries in seaice_lsr and seaice_ocean_stress)
450      - bug fix in seaice_ocean_stress (update of lab_sea required)
451      - reduce loop boundaries to necessary minimum also in seaice_evp
452      - go back to the old way of computing deltaC/Z as the adjoint likes that
453        better
454    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
455      passive tracer to an Age Tracer) + update output.txt
456    o pkg/exf:
457      - implement A-grid / C-grid selection for wind-stress input files.
458      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
459      for now, in exf_bulk_largeyeager04.F only :
460      - change implementation for case where windspeed + 2. components wind-stress
461        are read-in. AND use rhoConstFresh to convert evap.
462    o pkg/seaice:
463      - use correct EXCH_UV for wind-forcing (on A-grid).
464      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
465        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
466    o pkg/exf:
467      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
468      EXF_INTERPOLATION:
469      - merge global_with_exf/code version of exf_interp_read.F
470        to the main code ;
471      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
472        reading the file ; Important: This options needs to be defined to recover
473        previous code.
474        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
475      - no longer loose real*8 precision along the way when using exf_iprec=64.
476    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
477      - change discretisation of evp-solver in order to avoid another exchange
478        (changes lab_sea) and clean up a little
479      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
480        help the adjoint (this also changes the results slightly)
481      - add a few "_d 0" where they had been missing in seaice_evp.F
482      - cleaning up: remove unused seaice_calc_rhs.F
483    o pkg/exf: some cleaning-up:
484      - change various "constants" into runtime parameters
485      - cleaned-up Large&Yeager04 routine which should eventually
486        replace exf_bulkformulae.F (changed names of S/R and CPP)
487        and merged various ALLOW_ATM_WIND options
488     only used with thsice pkg (in thsice_get_exf.F):
489      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
490        which are used when useStabilityFct_overIce=TRUE (= the default)
491      - change default values of ice & snow emissivity and scale downward LW
492        by ice & snow emissivity.
493    o pkg/thsice:
494     fix few little problems, in thsice_calc_thickn.F:
495      - growth vertically (and not laterally) if iceFrac == iceMaskMax
496      - melt only laterally if hIce < hThinIce (as the comments say)
497      and in thsice_extend.F:
498      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
499      - start to form ice as soon as the minimum ice-volume is reachable.
500     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
501      and cpl_aim+ocn
502    o pkg/kpp
503     - move computation of surface related input fields to KPP into a new
504       subroutine kpp_forcing_surf.F
505     - remove wrong (within bi,bj loops) EXCH calls.
506     - little cleaning (add argument myThid in last position, cvs header ...)
507     - for now, fix conservation problem by exchanging KPPviscAz (may not
508       be the best fix)
509    o pkg/seaice
510     - check for inconsistent evp parameter/cpp-flag combination
511     - remove leftover errIO flat for obsolete name list error handling
512    o OpenAD
513     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
514    
515    checkpoint59a
516    o pkg/seaice: some parameter clarifications and a little bit of clean up
517    o pkg/thsice: rename run-time parameters:
518       himin       -> hIceMin
519       himin0      -> hThinIce
520       hihig       -> hThickIce
521       i0          -> i0swFrac
522       transCoef   -> bMeltCoef
523       frac_energy -> fracMelting
524      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
525       with default values (for now) that do not change the results.
526      remove old version of thsice vars advection in pkg/seaice.
527    o in FFIELDS.h:
528      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
529      - make pLoad & sIceLoad always available (but still only used if
530         ATMOSPHERIC_LOADING is #define).
531    o pkg/kpp: replaced _KPP_RL with _RL
532    o bug fixes for vertical diffusivity computations when both KPP and
533        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
534        are no longer updating the vertical diffusivity array
535        (passed as argument) but are (re-) setting those arrays.
536    o pkg/seaice: fix bug in evp solver, while doing that
537      - change (improve?) discretization of stress computations for both
538        cgrid-lsr and evp solver
539      - add a new routine to compute strain rates
540      - the above changes lab_sea results
541      - add no slip conditions for evp solver (off by default), lsr-version
542        may follow
543      - fix exchange for shear at Z-points (does not change lab_sea)
544      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
545        (to force the user to pick a time step since there is not "safe" way
546        of choosing it)
547      - add principal stress diagnostics
548      - rearrange fields for evp a little to avoid having to call a: too many
549        exchanges and b: exchanges for stress trensor components which we do
550        not have.
551      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
552        of evp, complete rewrite for lsr case (latter is does not yet work
553        in all cases)
554    o pkg/kpp: add code to have mixing in shelf ice caverns
555      - add myThid to all kpp routines (long overdue)
556    
557    checkpoint59
558    o pkg/exf:
559      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
560        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
561      - move exf header files from lower_case.h to UPPER_CASE.h ;
562        add missing cvs Header & Name
563      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
564      - add namelist param. selectStressGridPosition, exf_monFreq
565      - retire many _CLIM routines, and remove data.exf_clim
566        + params moved to data.exf
567        + climsst, climsss now handled by exf_set_gen, i.e.
568          climss?period=0 refers to constant field,
569          climss?period=-12 to monthly forcing
570      - split up namelists in data.exf
571    o pkg/seaice:
572      - remove seaice_exch and seaice_exch_uv
573      - remove superfluous exchange of theta
574      - add myThid to seaice_budget_ocean/ice
575      - add new interface for atmospheric wind forcing (C-grid only)
576        + new routine
577        + two new field (taux, tauy for stress over ice)
578        + removed one global field (DAIRN) for C-grid case only
579    o pkg/thsise
580      - 2nd set of modifs for thsice adjoint in conjunction with exf
581    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
582    
583    checkpoint58y_post
584    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
585      vertical diffusivity, similar to that in MOM4; turned on using
586      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
587      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
588    o Added capability for 3D specification of background vertical diffusion
589      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
590      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
591      "data" file that contains the 3D vertical diffusivity coefficients.
592    o ice dynamics (pkg/seaice) with thsice thermodynamics:
593      - add code within pkg thsice to advect & diffuse sea-ice fields
594      similar to (and will replace) what has been added in  seaice_advdiff.F,
595      but: - conserving Mass, Heat & Salt.
596           - better when using non-linear advection scheme (not yet fully tested)
597           - can also be used in atmospheric set-up (for now, only the diffusion).
598    
599    checkpoint58x_post
600    o IO option for global-file compact format:
601      - add options when generating topology (utils/exch2/matlab-topology-generator)
602      - add I/O capability (pkg/mdsio).
603      - adapt utils/matlab/rdmds.m to read this format.
604      for now long-line format not yet supported by pkg/mdsio (& exch2).
605    o shelfice: add a few diagnostics
606    
607    checkpoint58w_post
608    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
609      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
610      (and replace horiVertRatio in NH code).
611      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
612                         and tutorial_plume_on_slope (sensitive to truncation)
613    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
614      directly to drive seaice model (C-grid only)
615    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
616     - reintroduce computation of wind from stress,
617     - compute tau (in exf_bulkformulae.F) from windstress averaged to
618       mass points to avoid tau = 0
619     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
620    o rdmnc.m: make it work with "global" files created with gluemnc
621    o rdmnc.m : some improvements in dealing with singleton dimension
622      (tested on all testreport mnc output files).
623    o genmake2: disable pkg/profiles if netcdf test fails.
624    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
625    o move call to cal_readparms up to make calendar parameters/variable available
626      to all packages
627    
628    checkpoint58v_post
629    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
630      useDynP_inEos_Zc tested.
631    o pkg/exf: changes to properly interpolate/mask/scale initial fields
632    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
633      and portions thereof.  See read_cs.txt for description and examples.
634    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
635      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
636      following the great-circle arc between those 2 points.
637    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
638      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
639    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
640     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
641     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
642     - still needs work (not working with some options ; efficiency to improve)
643       and serious testing.
644     - use this scheme for temperature & salinity in 2 advection test exp.:
645       advect_xy & advect_xz, respectively.
646    
647    checkpoint58u_post
648    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
649    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
650    o testreport: add option "-skipdir" to skip some test.
651    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
652      momentum calculation.
653    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
654    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
655      remove checkpoint.F and the_correction_step.F (no longer used);
656      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
657    o add option (linFSConserveTr) to correct for tracer source/sink due to
658      Linear Free surface
659    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
660    o pkg/thsice: fix reading mnc-pickups
661    
662    checkpoint58t_post
663    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
664    o pkg/mdsio:
665     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
666       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
667       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
668     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
669     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
670       either MDS_READ_FIELD or MDS_WRITE_FIELD )
671     - new S/R (to replace MDSWRITEMETA), which allows to write more
672       informations (variable names, time ...) to meta files.
673     - modify rdmds.m to give back the meta file content.
674    o pkg/diagnostics: change vertical interpolation to be safer, and more
675       flexible (define p-levels to interpolate to in data.diagnostics);
676      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
677       diagnostic pointer.
678    o pkg/seaice: more cleaning up of seaice_growth, added many comments
679    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
680    o fix multi-category seaice:
681     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
682       SEAICE_MULTICATEGORY
683     - fix short wave heat flux
684    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
685       and allow to use EVP solver. Change forward lab_sea: test both EVP
686       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
687    o Initial check-in of lab_sea adjoint
688      (very similar to natl_box_adjoint/code_seaice)
689      * used C-grid and EVP solver
690      * used KPP, GM/Redi
691      * uses inAdExact=.TRUE.
692      * gradient checks fail for both ADM and TLM
693        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
694        f.d. gradients actually seem more problematic than ADM, TLM gradients;
695        issue is related to forward mismatch between g77 an ifort
696    o pkg/seaice: overhaul of thermodynamics
697     - growth.F and groatb.F are replaced by new routine seaice_growth.F
698     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
699     - move a few global fields out of SEAICE.h into seaice_growth.F and
700       make them 2D (FICE/QNETO/ ...)
701     - remove FO (it is the same as QNETO)
702     - introduce a few local fields to avoid modifying external fields such
703       as atemp, etc.
704    
705    checkpoint58s_post
706    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
707      changed exf_set_gen.F so that
708        genperiod=0 means input file is one time-constant field and
709        genperiod=-12 means input file contains 12 monthly means
710    o CG2D: use pre-computed solver main-diagonal (stored in common block);
711      this affects truncation error ; generate new output file for exp. which
712      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
713        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
714        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
715        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
716        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
717        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
718    o start implementation of deep-atmosphere and anelastic formulation
719    o verification: remove 2nd copy of input files and use script "prepare_run"
720      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
721    o mom_common/vecinv/fluxform: fix a few initialisation isssues
722    o profiles: fix for multithreaded case
723    
724    o diagnostics: rename few diags:
725      s/'PRESSURE'/'RCENTER '/g
726      s/'TICE    '/'oceFreez'/g
727      s/'TAUX    '/'oceTAUX '/g
728      s/'TAUY    '/'oceTAUY '/g
729      s/'SWFLUX  '/'oceQsw  '/g
730      s/DIFx/DFxE/g
731      s/DIFy/DFyE/g
732      and add few ocean-forcing diagnostics:
733      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
734    o modifications to pkg/seaice/growth.F and budget.F, which change results of
735      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
736      as actual snow thickness.  It now refers everywhere to effective snow
737      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
738    
739    checkpoint58r_post
740    o modifications to pkg/seaice/growth.F, which change results of
741      lab_sea experiment: fixes pertain to melting snow over open water, to
742      masking EVAP under sea ice, and to using the correct AREA variable for
743      computations of EVAP, PRECIP, HSNOW, and GHEFF
744    o add ability to read bathy, salt, and theta using MNC (off by def)
745    o add flooding algorithm and advection of HSNOW for pkg/seaice;
746      both are turned off by default and do no change any results
747    o seaice advection with pkg/thsice: a step toward the use of non-linear
748      advection scheme, but #ifdef or commented out for now (requires more EXCH).
749    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
750      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
751      in natl_box (affects results @ truncation level: update output.txt)
752    o multi-threading and IO:
753      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
754      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
755        (needed to work with SingleCpuIO): tested in all verif. exp.
756    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
757      affects the results (but none of the verification test uses this scheme).
758    o Adding some pkg/diagnostics capability to pkg/seaice
759      (will certainly be subject to changes)
760    o ctrl: adding new control variables:
761      lwflux, lwdown, evap, snowprecip, apressure, runoff
762    
763    checkpoint58q_post
764    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
765      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
766      high_res_cube configuration by 4% on Columbia.
767    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
768      add (in global_with_exf/code) a version of EXF_INTERP_READ without
769      dynamical allocation (seems to work in multi-threaded).
770    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
771      single CPU io) so that TAF does not have to see EESUPPORT.h
772    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
773    
774    checkpoint58p_post
775    o obcs: stop if obcs is used with useCDscheme = .true.
776    o shelfice:
777     - fix a sign error so that no slip at shelfice interface works
778     - remove stop for combination non-hydrostatic code and shelfice. That does
779       not mean, that the results are correct, but at least they are numerically
780       stable
781    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
782    o added adjoint exch routined for all exch*3d* routines
783      and updated flow directives
784    
785    checkpoint58o_post
786    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
787      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
788    o change controling S/R for writing pickup file (new S/R do_write_pickup)
789      and clean-up reading/writing of pickup files.
790    o fix local version of read/write pickup (NH part) in rotating_tank/code
791    o simplify EXCH interface:
792     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
793     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
794    o added the regrid package
795    o shelfice:
796     - add a simple boundary layer scheme to reduce noise
797     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
798    
799    checkpoint58n_post
800    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
801       local variable (not in common block).
802    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
803      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
804      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
805        to work with SingleCpuIO.
806    o add "_d 0" to real constant of pkg/cfc subroutines ;
807       update exp. cfc_exemple & tutorial_cfc_offline output files.
808    o multi-threading and IO:
809      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
810        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
811      - barrier before and after reading.
812      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
813      - avoid using MDS_WRITELOCAL for LAND pkg output.
814      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
815        common-block variables ; Allows multi-threading with master-thread IO.
816    o change default MAX_NO_THREADS from 32 to 4 ;
817      and stop cleanly when MAX_NO_THREADS is too small.
818    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
819    
820    checkpoint58m_post
821    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
822       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
823    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
824       keep global_ocean.90x40x15 (for AD testing) with former secondary test
825       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
826    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
827        add MITgcm_tutorials (= code + all the tutorials)
828    o ecco, option to compute cost for total ssh (mean+anom)
829    o consistent with addition of ptracer and ssh in pkg/profiles
830    o profiles: adding ptracer and ssh
831    o testreport: change multi-test output-file name
832      (from output.txt.{name} to output.{name}.txt)
833    o profiles: now ok for mutli-tiles case
834    o seaice: add 4 parameters for different advection schemes for area,
835      (effective) seaice thickness, enthalphy, and snow height. Their default
836      is the standard parameter SEAICEadvScheme
837    o calc_gw:
838     - add cosFacU in zonal viscous flux (harmonic.visc.).
839     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
840       of tutorial_plume_on_slope.
841    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
842    o calc_gw: true flux-form, account for horizontal grid spacing.
843      update rotating_tank results, but not plume_on_slope (affected at
844      truncation level, 11 digits).
845    
846    checkpoint58l_post
847    o calc_gw:
848     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
849     - remove side-drag for now (need to fix it); update plume_on_slope results.
850     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
851    o commit code to make SST/SSS weights spatially variable
852      (based on either variable in-situ or variable initial T/S weights)
853    o pkg/ecco:
854      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
855        now based on horizontally varying weights wthetaLev, wsaltLev
856      * cost_averagesflags now returns year indices in addition to day, month
857      * sflux balance is performed on annual basis
858        (sflxumm, sfluxmm2, bal_sfluxmm)
859      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
860        including separate counting and multipliers
861    o pkg/rbcs
862      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
863    
864    checkpoint58k_post
865    o testreport:
866     - always build in dir. "build" (if not there, mkdir build instead of building
867       & running in input)
868     - run in dir run (if it exists), in build otherwise.
869     - call prepare_run (if input/prepare_run exists)
870     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
871    o pkg/exf modifications to interpolation and rotation routines for more
872       reasonable treatment of North Pole singularity: for tracers North Pole
873       value is set to northernmost zonal-mean value, for zonal velocity it is
874       set to zero, and for meridional velocity it is set to northernmost value.
875    o pkg/exf/exf_check_range.F
876     - add tile index to diagnostics and move stop statement to the very
877       end of the routine.
878    o pkg/diagnostics: (diagnostics_main_init.F)
879      define title of isomorphic variables according to the current config.
880    o pkg/thsice with pkg/seaice dynamics:
881    - fix domain of computation (interior only, required for exf) and do exchanges
882    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
883    o towards a standard way of dealing with multi-threading in MONITOR
884      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
885    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
886       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
887    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
888    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
889    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
890       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
891    o tracer advection:
892     - clean-up and simplify calc_common_factors.F
893     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
894       advection subroutine (but still not used within DST advection S/R)
895    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
896    
897    checkpoint58j_post
898    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
899      from file (collects calls previously in FORWARD_STEP)
900    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
901    o adjoint store dir. adjusted accordingly
902    o genmake2
903      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
904    
905    checkpoint58i_post
906    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
907      on wind stress (SEAICEstressFactor defaults to 1.)
908    o Total number of Timers is finite (<=40): comment out 2 non-essential one
909      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
910    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
911      on CS-grid: no longer loosing mass.
912    o exf & curvilinear-grid: no longer modify longitude xC & xG.
913    o pkg/ggl90: fix sloppy output and fix a bug
914    o pkg/seaice: added SEAICEuseEVPpickup parameter
915      - Set to false in order to start EVP solver with
916        non-EVP pickup files when using SEAICEuseEVP
917      - fix sign error in diffusion in seaice_calc_rhs
918    
919    checkpoint58h_post
920    * Modifications for bottom topography control
921      o replace hFacC by _hFacC at various places
922      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
923      o add non-self-adjoint cg2d_nsa
924      o update autodiff support routines
925      o re-initialise hfac after ctrl_depth_ini
926      o works for 5x5 box, doesnt work for global_ocean.90x40x15
927    * Adding verification for 5x5 box (4-layer) bottom topography control
928    
929    checkpoint58g_post
930    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
931       used for mean seasonal cycle, mean diurnal cycle); add an example
932       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
933    o pkg/ggl90:
934      - add parameter (minimum surface kinetic energy)
935      - fix bug (avoiding division by zero)
936    o couple pkg/thsice to pkg/seaice:
937      - modify advection in seaice to accomodate new scalar fields to be advected
938      - only muliDimAdection scheme work with seaice/thsice
939      - mapping of thsice-variables to seaice-variables, back and forth
940      - does not break the verification experiments, but does not give the
941        desired results either
942    o pkg/seaice
943      - make (default) second order advection a bit less confusing?
944    
945    checkpoint58f_post
946    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
947      to pkg/seaice):
948      - new routines thsice_map_exf and thsice_get_exf provide the interface
949      - add an additional formal parameter to thsice_solve4temp
950    o pkg/exf:
951      - add new fields wspeed, snowprecip (to be able to couple to thsice)
952      - correct Stefan-Boltzmann constant
953      - new parameter for longwave surface emittance
954      - separate some stuff from exf_bulkformulae into new routines  
955        exf_radiation, exf_wind
956      - add new parameters and constants: longwave emissivity for ocean, ice
957        and snow, evaporation parameters over ice
958      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
959        either wind from stress or stress from wind
960    o pkg/thSIce:
961    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
962    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
963       and THSICE_CALC_THICKN
964    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
965    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
966      to make debugging easier.
967    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
968    o pkg/bulk_force:
969      - clean-up comments and parameters ;
970      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
971    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
972      generate new output for test-experiment: aim.5l_cs.thSI
973    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
974      testreport accordingly
975    
976    checkpoint58e_post
977    o SEAICE_CGRID adjoint done
978    o R_STAR adjoint implemented.
979      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
980      * need to sort out init. of h0facc, etc.
981    o Make pkg/profile fully independent of ecco,cost, etc. stuff
982      to be able to use it in pure forward.
983    
984    checkpoint58d_post
985    o upgrade simple test-experiment to tutorial example:
986     step.1: duplicate the experiment and (step.2) will remove the old copy.
987      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
988      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
989      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
990      tutorial_global_oce_biogeo    <- copy of dic_example
991      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
992      tutorial_plume_on_slope       <- copy of plume_on_slope
993      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
994      tutorial_global_oce_optim     <- empty for now (David ?)
995      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
996     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
997    o correct a sign problem in cost_scat.F
998    o obcs and ptracers: fix boundary conditions for advections schemes
999      with larger stencil
1000    o thsice adjoint: start
1001    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1002      completeness
1003    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1004      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1005    o ptracers adjoint:
1006      * avoid extensive recomputatations
1007      * fix missing re-init. of gptr (missed by TAF)
1008    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1009      me to turn off the excessive output to STDOUT that this package produces
1010    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1011      and add those terms in Vector-Invariant formulation.
1012    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1013      if the control period (xx_hfluxperiod etc) is 0
1014    o in profiles pkg, clean routines and fix details
1015    o in ecco pkg, reading ssh data:
1016      fix problem in case the model does not start at iter0=0
1017    o fix mnc-pickup/restart for ptracers
1018    o new package prifiles:
1019      code to compute profile-based cost by Gael Forget
1020      (modifs in ecco, ctrl, autodiff)
1021    o Benign bug fix in initialization (spotted by M. Mazloff) of
1022      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1023    
1024    checkpoint58c_post
1025    o adjoint: finish NLFS adjoint and provide reference output in
1026      verification/global_ocean.90x40x15/results_ad_nlfs
1027    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1028      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1029      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1030      with SEAICE_CGRID defined.
1031    o move calendarDumps from "data" to "data.cal" and clean-up the code
1032      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1033    o add useEXF & useCAL flags (for now, set in hard-coded way)
1034    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1035      (were missing in NH mode, and wrong in quasihydrostatic mode).
1036      waiting for Chris updated version of calc_gw to add those CALLs.
1037    o fix bug in quasihydrostatic S/R ;
1038      add a test for this option: global_ocean.90x40x15.qshyd
1039    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1040      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1041    o add on/off flag useOffLine for package OFFLINE
1042    o seaice:
1043      - modify advection so that it works also on the C-grid
1044      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1045        problem in multi-tile runs with C-grid
1046      - add flags for clipping ice velocities and/or masking solver forcing
1047      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1048        C-grid solver
1049      - added a few comments to seaice_diffusion.F
1050      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1051        are now exclusive)
1052      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1053        required re-ordering the code a little:
1054       + make DAIRN global variable (defined in SEAICE)
1055       + move computation of the viscosities eta and zeta into a new separate
1056         routine (because I need to recompute them in seaice_ocean_stress.F)
1057    
1058    checkpoint58b_post
1059    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1060      update output.txt of exp. aim.5l_cs.thSI
1061    o various mnc cleanups and improvements:
1062      + shrink lookup tables by factor of ~4
1063      + better error reporting when running out of lookup space
1064      + able to handle longer path/file names (up to 500 chars)
1065    o adjoint:
1066      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1067      - TBD: "hidden" mom_vecinv recomp. in dynamics
1068    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1069     (allow to differentiate between forcing components using new integer flags:
1070      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1071     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1072    o ecco
1073      - enable trend removal from SSH anomaly obs.
1074    o adjoint
1075      - a fix for PmEpR when #undef EXACT_CONSERV
1076      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1077      - try to fix "hidden" recomp. in forward_step for NLFS
1078        (NLFS seems broken sometimes after I checked it in)
1079    o seaice:
1080     - add c-grid version of the dynamic solver:
1081       + three new routines that are the c-grid substitute lsr, dynsolver
1082         and ostres
1083       + put a few fields that were local to dynsolver into global common
1084         blocks, so that I can move the computation of stresses etc into
1085         seaice_lsr (saves coding but may break the adjoint).
1086     - replace more hardwired parameters by runtime parameters
1087     - add ice masks that mask the rhs of the implicit solvers where there
1088       is no ice (commented out in seaice_dynsolver, because i am not sure
1089       if this works properly), eventually this should replace the clipping
1090       of ice velocities in seaice_dynsolver to +/-40cm/s.
1091    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1092      include it only where its needed
1093    o move balancing of fluxes before the call of external_forcing_surf
1094    o seaice:
1095      - correct units of turning angles (now they are really in degrees)
1096      - move computation of GWATX/Y out of main routine into dynsolver
1097      - initialize GWATX/Y in seaice_init
1098    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1099      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1100    o seaice: add runtime flags for turning angles (default to zero)
1101    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1102      and trend from exf forcing and ctrl control adjustments
1103    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1104      (since checkpoint57x_post)
1105    o change the default rotation period to 86164.s = the Earth rotation
1106    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1107      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1108    o seaice advection: add code for choosing between the default (2nd order
1109      central differences) and multiDim advection schemes provided by
1110      pkg/generic_advdiff
1111    o seaice:
1112      - removed all references to SEAICE_GRID.h fields from
1113        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1114        (cubed-sphere configuration will change a little)
1115      - grid computations in seaice_init are obsolete now.
1116      - cleaned up code a little so that is easier to read (hopefully).
1117      - added new (better?) discretizations of default advection and diffusion
1118        (turn on with SEAICEuseFluxForm)
1119      - replace 1 in 3d global fields by kSurface in growth.F
1120      
1121    checkpoint58a_post
1122    o seaice:
1123      - bug fix in advect.F
1124    o shelfice:
1125      - separate shelfice load anomaly from pload (breaks with time
1126        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1127        Its default is 0., but it may be computed more cleverly from (unknown)
1128        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1129        done offline. A good approximation of the pressure load anomaly is
1130        necessary to avoid large initial adjustment processes underneath
1131        deep-reaching shelfice.
1132      - small fix in ISOMIP shelfice_thermodynamics
1133      - add more sophisticated thermodynamics of Hellmer (1989), this is
1134        now the default
1135      - give a few constants more intuitive names
1136    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1137      if bulk formulae are used in long integration (especially EmPmR). Turn
1138      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1139      if balancePrintMean, the imbalance that is substracted is printed to
1140      STDOUT.
1141    o fix bug (typo) in obcs_apply_eta.F
1142    o add a new package shelfice which enables us to model the circulation
1143      underneath shelf-ice with draughts of hundreds of meters.
1144     - works
1145     - to do: + include improved thermodynamics
1146              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1147                instead of new field kTopC
1148              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1149                instead of new field R_shelfIce and new code in ini_depth.F
1150                and ini_mask_etc.F?
1151              + adjust vertical mixing schemes?
1152    o seaice pkg:
1153     - add a cpp-flag to include a simple formula for a salinity dependent
1154       freezing point of sea water at the surface
1155     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1156       meridional stresses are now different (and hopefully correct)
1157    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1158       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1159       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1160    o pkg/diagnostics: add options and parameters for regional-statistics
1161       diagnostics ; define regions by reading a region-mask from a file
1162       (might add other options later)
1163    o pkg/bulk_force:
1164     - add option and parameters to use AIM surface-flux formulae.
1165     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1166       others forcing fields (defined in PARM05, parameter file "data") are loaded
1167       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1168     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1169     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1170     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1171       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1172     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1173    
1174    checkpoint58
1175    o add "--embed-source" option to genmake2 which, when the supporting
1176      tools can be compiled (as determined by genmake2) will turn on the
1177      embed_files package which then embeds the entire MITgcm source code
1178      (*.[fFhc] + Makefile) used for the build within the executable
1179      - requested by CNH but off by default
1180      - adds a paltry <9MB to the mitgcmuv executable in most cases
1181      - only writes the output when useEMBEDSRC in eedata is true
1182    o clean up 3-dim. relaxation codes:
1183      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1184      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1185      * Thanks to Tom Haine for testing!
1186    
1187    checkpoint57z_post
1188    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1189      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1190    o fix the pickup behavior for obcs in combination with ptracers
1191    o fix a bug in ptracers_external_fields_load
1192    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1193      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1194    o transfered surface NH pressure to eta field (if exactConserv).
1195    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1196         and update lab_sea output.txt file.
1197    o completing 3-dim. relaxation code: additional term
1198         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1199      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1200      * At compile time, in "EXF_OPTIONS.h" set
1201          #define  ALLOW_CLIMTEMP_RELAXATION
1202          #define  ALLOW_CLIMSALT_RELAXATION
1203      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1204          tauThetaClimRelax3Dim = 15552000.0,
1205          tauSaltClimRelax3Dim  = 15552000.0,
1206      * 3 cases:
1207          1) Use a constant-in-time 3-dim. field
1208          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1209          3) Real-time relax. to time-evolving prescribed field
1210    o Adding Laplacian-type smoothness constraint on
1211      initial and boundary (forcing) controls (ic, bc)
1212      * enable at compile-time via
1213        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1214      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1215      * Absolute scale somewhat unclear so far
1216      * no area weighting was included since no other cost term does so far
1217    
1218    checkpoint57y_post
1219    First step for a NLFS adjoint
1220    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1221    o new init. routines for calc_r_star, calc_surf_dr
1222    o still need to deal with ini_masks_etc
1223    o testreport seemed happy
1224    checkpoint57y_pre
1225    
1226    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1227    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1228    o add new offset feature to offline pkg (plus minor cleanup)
1229    o cfc fixes for final year of integration
1230    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1231      be in GCHEM_OPTIONS).
1232    
1233    checkpoint57x_post
1234    o fix testreport Pb in multiple test experiment.
1235    o cleanup our namelist syntax in verification:
1236      - make it more F95 standards compliant (some work still needed)
1237      - allows the vast majority of our tests to work with gfortran
1238    o Non-Hydrostatic:
1239     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1240     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1241    o Allow to apply AB on T,S rather than on AB(gT,gS):
1242     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1243     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1244       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1245     - need a "clever" read_pickup to restart from the other AB formulation
1246    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1247    o remove some unused variables (reduces number of compiler warnings)
1248    o adjoint
1249      * Disable useVariableViscosity for adjoint for time being
1250        (there are a number of extensive recomputations)
1251      * Initialize certain variables needed for adjoint
1252    
1253    checkpoint57w_post
1254    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1255                 fix the singleCpuIO RS version of MDSWRITEFIELD
1256       and add a WARNING if using globalFiles=T with multi-processors.
1257    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1258      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1259    o tracer advection scheme:
1260      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1261       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1262       was not very convenient).
1263      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1264       (further tests needed for the implicit DST & Flux-Limiter schemes).
1265    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1266      and sRef for convenience, handy, when you want to initialize
1267      ptracers in a large domain with a constant non-zero value. Also,
1268      untangle ptracers_init.F a little.
1269    
1270    checkpoint57v_post
1271    o change dome exp. to use variable viscosity in side-drag terms.
1272    o remove all the files from the cfc_offline test since they are now
1273      incorporated into tutorial_cfc_offline which has been producing
1274      identical results for a few days of testing
1275    o add new parameter: sideDragFactor to enable half-slip-side BC
1276      and change side-drag S/R to use viscosity from mom_calc_visc
1277      (can switch back by setting sideDragFactor=0.); affects results at
1278      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1279       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1280    o vorticity & strain are now computed without masking, to account for
1281      no-slip-side BC in variable viscosity calculation ; mask is applied
1282      anyway later on, before computing advection/coriolis terms.
1283    o modify exp4 to test new obcs support for reading from external files
1284      and for passive tracers
1285    o fix behavior of ptracers_monitor when monitor output is written to a
1286      netcdf-file; still not independent of monitor.F (writes in the same
1287      file).
1288    o change default value of tRef (put a uniform, meaningful value for ocean
1289      & atmos) and initialize sRef (was missing, as Martin mentioned).
1290    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1291      to be proportional to enstrophy dissipation length.  Thus,
1292       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1293      This is now consistent with Smagorinsky and with the manual.
1294    
1295    checkpoint57u_post
1296    o OBCS and PTRACERS: add open boundary support for passive tracers
1297      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1298        OB-values from file; this is not different from the way theta and salinity
1299        are treated
1300      - however, Orlanski-radiation conditions are not supported, and the model
1301        will stop if you use pTracers and Orlanski at the same time.
1302      - beefed up the rountine obcs_external_fields_load: now only those open
1303        boundary values are overwritten with values from files for which there
1304        are really files, otherwise the OB-fields remain untouched. This makes
1305        it possible to use different OBs at different ends of the domain (as
1306        with EXF)
1307    o reduce number of exch calls in shap_filt (s2).
1308    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1309      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1310    
1311    checkpoint57t_post
1312    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1313    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1314      same truncation, independent of the face number: affects affects several
1315      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1316    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1317      note that biharmonic viscosity + no-slip was not tested in any experiment.
1318    o fix bug in non-linear free-surf side-drag ; generate new output for
1319      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1320    o make mnc honor the writeBinaryPrec flag for most kinds of output
1321    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1322    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1323      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1324    o add brackets in multi-terms sum to get same truncation, independent of
1325      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1326      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1327    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1328      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1329      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1330      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1331      Suggested values of viscosity parameters found in mom_calc_visc.
1332      Many new viscosity diagnostics available.
1333    
1334    checkpoint57s_post
1335    o Add clearing-house for viscosity calculations, mom_calc_visc and
1336      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1337      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1338      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1339      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1340      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1341      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1342      ViscAhStrain and viscAhTension are now retired.
1343    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1344    o In response to JMC's bug report, genmake2 now ignores any soft-links
1345      that it finds in the *current* directory when searching for files.
1346      Soft-links found in any other source directories will still work as
1347      they did before.
1348    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1349      a C routine to unlimit the stack size
1350    o mnc-ify pkg/aim snapshot vars
1351    o mnc-ify pkg/land as requested by Daniel
1352    o various changes to mnc including:
1353      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1354      - output can now be grouped so that all files within a group
1355          change the ITER portion of their names in lock-step together
1356      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1357          and works with both EXCH1 and EXCH2 (but needs more testing)
1358      - writing works for all verification test cases w/ g77 on Linux
1359    
1360    checkpoint57r_post
1361    o make MNC variable initialization happen earlier
1362    o add diagnostics for (almost) each term of the momentum Eq.
1363    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1364    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1365    o remove MINIMAL_TAVE_OUTPUT option ;
1366      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1367    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1368      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1369    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1370    o add time-dependent SST, SSS control
1371    o cost terms in ecco/ modularized (new cost_generic.F)
1372    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1373    o new infrastructure for seaice model vs. obs misfits in seaice/
1374      * driver from the_main_loop.F is seaice_cost_driver.F
1375      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1376      * gradient check in Exp. 6a of natl_box_adjoint/
1377    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1378      (see README file)
1379    
1380    checkpoint57q_post
1381    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1382    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1383      - bug was reported by Jean-Michel and Ian Fenty
1384    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1385      update exp. cpl_aim+ocn output.
1386    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1387      Needed for high-res. runs with large global files
1388      to be able to limit tapelev size
1389    o Changed some tests for adjoint:
1390      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1391      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1392      * global_ocean.90x40x15/ back to default 3-level checkpointing
1393    o Modifications to enable scripted COMMON to MODULE conversion
1394      * verification/OpenAD/code/ has necessary scripts and description;
1395      * converts, compiles and runs successfully;
1396    
1397    checkpoint57p_post
1398    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1399    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1400      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1401    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1402    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1403      (was already the case for dissipation with mom_vecinv,
1404       and also the case for grad.PhiHyd when staggered-timeStep)
1405      This will allow to put dissipation out-off the AB time-stepping.
1406     Unfortunately, affects truncation error. Update output of exp. that "fails"
1407      (cg2d matching number) and leave the others for later: front_relax(10),
1408      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1409      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1410    
1411    checkpoint57o_post
1412    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1413      (2) its ready to be documented during the 20050801 DocFest
1414    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1415      for ideal_2D_oce and lab_sea on linux_ia32_g77
1416    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1417      in global1x1_tot/code_seaice_adj to access indices 32, 33
1418      (worth another tag)
1419    
1420    checkpoint57n_post
1421    o adding precip control xx_precip 32
1422    o adding swflux control xx_swflux 33
1423    o Replacing 10 forcing penalty cost routines by 1 generic.
1424    o Implementing partitioning in time-mean and variable adjustment
1425      for atmos. state.
1426    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1427    o in natl_box_adjoint:
1428      * updated exp 1 to 10
1429        (but does not have time-mean vs. variable split results yet)
1430    o updated global1x1/*_seaice_adj/
1431      to incorporate latest changes
1432    o enable useSingleCpuIO for mdsio vector routines
1433      (applies in particular to tapelev I/O)
1434    o removed inefficient K-loop in all active_file*control*.F
1435    
1436    checkpoint57m_post
1437    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1438      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1439    o pkg/exch2: filling of face-corner halo regions is optional
1440      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1441    
1442    checkpoint57l_post
1443     tag before updating tutorials (pre-release-2)
1444    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1445       for output and interpolation of input fields onto model grid)
1446    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1447       Affects results of exp. rotating_tank ; update output.txt.
1448    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1449          and taking the square quantity and/or using a fraction-weight field.
1450    o fix aim_diagnostics_init.F mate numbers.
1451    o add mnc output capability to diagnostics/diagstat and update
1452      our cvsignore files for the ACSII output generated
1453    
1454    checkpoint57k_post
1455    o lab_sea now uses diagnostics package and provides a suite of
1456      new EXF diagnostics output.
1457    
1458    checkpoint57j_post
1459    o exf
1460      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1461        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1462        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1463      * extended diagnostics output
1464        - now includes all EXF variables
1465        - hs, hl moved to common block
1466        - separate S/R for diagnostics, called after ctrl vector is added
1467        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1468        - EXFqnet contains true Qnet (i.e. includes qsw)
1469      * updated verif. lab_sea, global_with_exf
1470      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1471        to ensure that diagnostics sees a true EXFqnet
1472    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1473    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1474      several times with different frequencies.
1475    o mnc-ify the thsice package as requested by Daniel Enderton
1476      - the monitor--MNC output needs work
1477      - many attributes need to be added (most are currently blank)
1478    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1479      - many attributes need to be added (most are currently blank)
1480    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1481    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1482    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1483      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1484         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1485    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1486     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1487    
1488    checkpoint57i_post
1489    o Diagnostics package was changed: diagnostic allocation is now deactivated
1490      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1491    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1492      add 1rst Order upwind vertical Shear.
1493    o add a quick fix for A/B checkpointing in OFFLINE mode
1494    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1495      end-run around the C/Fortran linking horror in eesup/src/timers.F
1496    o added pkg/runclock: allows user to terminate run based on wall clock
1497    o added non-hydrostatic scaling parameter: nh_am2
1498    o pkg/my82: futile attempt to make results compiler-independent by adding
1499      some "_d 0", etc. no effect.
1500    o for mnc output, fill the 'T' coordinate var with myTime and create a
1501      separate 'iter' variable for iteration count
1502    o pkg/diagnostics:
1503      add new capability: output of Global/Regional & per-level statistics ;
1504      tested against monitor output (including land & thSIce) on various exp.
1505    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1506    
1507    checkpoint57h_done
1508      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1509      data.diagnostics, data.gchem, data.ptracers) is done.
1510    
1511    o pkg/diagnostics: prepare for Global/Regional statistics.
1512      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1513    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1514      and rename it: DIFFERENT_MULTIPLE
1515    
1516    checkpoint57h_post
1517    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1518    o pkg/diagnostics: change output frequency, now in seconds (instead
1519      of Nb of iterations). This requires to change data.diagnostics.
1520    checkpoint57h_pre
1521    
1522    o in mnc, let the user create the output dir if both mnc_outdir_date
1523      and mnc_outdir_num are false
1524    o add fflags() to pkg/diagnostics which allows one to specify, on a
1525      per-file basis, the file precision [default behavior is unchanged]
1526    o added diagnostics to pkg/kpp, including computation of mixed layer
1527      depth based on a temperature/density criterion
1528    o updated verification/natl_box to test the new pkg/kpp diagnostics
1529    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1530    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1531    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1532      not mnc -- this mistake was found by JMC and is now corrected
1533    
1534    checkpoint57g_post
1535    o add Adams-Bashforth 3rd Order time stepping:
1536      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1537      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1538    checkpoint57g_pre
1539    
1540    o make lambda[Theta,Salt]ClimRelax spatially varying
1541      (default remains spatially uniform constant based on tau)
1542    o added new control variables
1543      * init. uVel, vVel, etanN
1544      * lambda[Theta,Salt]ClimRelax
1545    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1546      (suggested by G. Forget)
1547    
1548    checkpoint57f_post
1549    o add parameter "baseTime" = model base time = time at iteration zero
1550      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1551      account for baseTime shift
1552    o move Coriolis arrays from PARAMS.h to GRID.h
1553    checkpoint57f_pre
1554    
1555    o mnc-ifying the seaice package
1556    o introduced an alternative length scale calculation for use in the limiting
1557      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1558    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1559    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1560      as well as grad(vort3).  Made it compatible with both approximate form
1561      for the cubed sphere and full form of these gradients.  Added flag
1562      useFullLeith to select between approximate and full form.  
1563    o add "d0" in getcon.F to reduce differences between compilers/platforms
1564      update output.txt of exp. fizhi-gridalt-hs
1565    o change port_rand funtion to allow to set the seed.
1566    o fix obscure MNC bug involving conversion between reals and integers
1567      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1568        new version is now more standards-compliant
1569    o adjoint-related modifications
1570      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1571      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1572      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1573    
1574    checkpoint57e_post
1575    o Adding eddy stress controls a la Ferreira et al.
1576    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1577    
1578    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1579      update output.txt of exp. fizhi-gridalt-hs
1580    o add more "Z" dimensions and associated coordinate vars to MNC
1581    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1582    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1583      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1584      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1585      months and years.  Requires pkg/cal.
1586    o diagnostics: add pickup functionality
1587      - off by default for backwards compatibility
1588      - current version only uses MDSIO -- MNC will be added
1589    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1590    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1591    
1592    checkpoint57d_post
1593    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1594    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1595      output from the diagnostics package
1596    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1597    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1598      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1599    o add coordinate variables to the MNC output from the diagnostics package
1600    o change MNC-flags default value: true when useMNC=TRUE
1601    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1602      the ability (off by default) to read the grid information using MNC
1603    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1604    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1605    o do snap-shot diagnostics at the middle of the time-interval (instead of
1606      at the end).
1607    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1608      new test for AIM with thSIce + slab-ocean
1609    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1610    o move state variable diagnostics to the beginning of the time step ;
1611      (note: still needs some work specially for snap-shot diagnostics)
1612      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1613    
1614    checkpoint57c_post
1615    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1616    o generate new output.txt files on faulks with g77 & the new -ieee option
1617    checkpoint57c_pre
1618    
1619    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1620      update output.txt of exp. global_ocean.90x40x15
1621    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1622      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1623    o add saltFlux(+File) forcing capability with periodicExternalForcing
1624    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1625    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1626    o improvements for the MNC output from DIAGNOSTICS:
1627      - correct handling of the unlimitied dimension
1628      - all dims now have associated coordinate variables
1629      - variables located at U, V, and Corner ("Z") points are now written
1630        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1631        *all* data points are output
1632    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1633    o added pkg/seaice/seaice_monitor.F
1634    o mdsio_readfield.F can now read files visible only to master MPI process.
1635    o pkg/seaice: some test code for ice-modified ocean stress
1636    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1637      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1638      spurious negative numbers for precipitation and humidity.  Will cause
1639      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1640    o pkg/ctrl/
1641      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1642        May be enabled via doPackDiag
1643      *  introduce z-scaling of
1644         + gradient (doZscalePack) and
1645         + control (doZscaleUnpack)
1646    o pkg/mdsio/
1647      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1648      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1649    
1650    checkpoint57b_post
1651    o simplify options in diagnostics_fill arguments (remove weird combinations)
1652    o fix MNC coordinate variables so that they now contain per-face index
1653      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1654      general, EXCH2 grids are only aligned to a "local" coordinate system
1655    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1656    o Implement instantaneous output within pkg diagnostics:
1657      setting a negative frequency in data.diagnostics produces
1658     "snap-shot" output (as opposed to time-average if freq > 0)
1659    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1660      NOTE: change ptracer diagnostics name: use 2 characters to work with
1661            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1662    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1663      becomes the coordinate variable for the 'T' dimension
1664    o add CF-style coordinate variables to MNC
1665      - just a first cut:  numbers are meaningless on the cubesphere and
1666        missing along the T axis but otherwise it works!
1667    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1668    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1669    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1670      this is based directly on what the model compute, so that the content of
1671      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1672    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1673    o clean up build options files for SunOS, in particular
1674      - remove -traditional from xmakedepend
1675      - change -xarch=v9 to -xarch=native for f77
1676      - restore use of make (not gmake)
1677      - add CC=gcc if using g77
1678    o changes per discussion of AM, JMC, & EH3 today:
1679      - move redundant "grid" variables out of "state" -- in preparation of
1680        creating proper CF-style coordinate variables and in recognition
1681        that any/all grid variables can be easily copied (eg. w/NCO) from
1682        the grid files into any of the other NetCDF files
1683      - *always* output grid variables with MDSIO (this will eventually be
1684        changed)
1685      - output MNC grid file if useMNC is true
1686    o every instance of _END_MASTER() has been found and replaced with
1687      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1688      preprocessors
1689    o re-arrange diagnostics pkg initialisation:
1690     - allow each package to extend the available diagnostics list
1691     - add some checking and fix small problems (multi-threaded, ...)
1692     - new S/R diagnostics_fill (replace fill_diagnostics):
1693       look through the short list of active diag. (instead of the long list)
1694       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1695    
1696    checkpoint57a_post
1697    o this set of changes restores TAMC compatibility
1698      tested for global_ocean.90x40x15 adjoint on trough
1699      (what a pain)
1700    
1701    checkpoint57a_pre
1702    o some modifs in tools/build_options for sunos
1703    o call ctrl_pack for ctrl at end for optimcycle=0
1704    
1705    checkpoint57
1706    o add horizontal bi-harmonic viscosity for vertical velocity
1707      - new parameter viscA4W (defaults to viscA4)
1708      - affects only non-hydrostatic code
1709      - to be done: no-slip lateral boundary conditions
1710    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1711    o implement Implicit Vertical advection for pTracers
1712    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1713      (implemented also for implicit vertical diffusion & advection)
1714    o OBCS: extend application of tracer open boundary conditions
1715      to a strip beyond the boundary of width Olx/Oly
1716    o add call monitor to TAF set of required calls (flow directives)
1717      and include in natl_box_adjoint
1718    o untangle a few ifdefs related to cost, ctrl, autodiff
1719      untangel a few ALLOW_ECCO_OPTIMIZATION
1720    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1721      (theta2, salt2 in ecco_cost_weights)
1722    
1723    checkpoint56c_post
1724    o OBCS as control variables
1725      - update ctrl_ad_diff.list, obcs_ad_diff.list
1726      - remove balance of obcs controls from default
1727      - fix index bug nobcs in ctrl_init
1728      - fix dummy fields filen in ctrl_pack
1729      - add dummy weights for obcs
1730    o lsopt: comment out fort.94 output
1731    o optim:
1732      - remove unnecessary header files
1733      - adjusted namelists
1734      - add xerbla.F to Makefile
1735    o exf:
1736      - multiple modifications of exf_check_range
1737      - unit change in exf_init_runoff from [m/year] to [m/s]
1738    o mdsio:
1739      - i/o-vector change debugLevel from debLevA to debLevB
1740    
1741    checkpoint56b_post
1742    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1743      is called from DO_THE_MODEL_IO
1744      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1745      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1746      - clean up PTRACERS_WRITE_TIMEAVE a little
1747    o add another verification experiment that tests both the cfc-pkg and
1748      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1749      reactive tendencies treated inline with regular timestepping
1750    o testreport previously did a lousy job of comparing small numbers, so
1751      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1752      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1753      testreport.
1754    o ptracers_monitor: bug fix for MPI
1755    
1756    checkpoint56a_post
1757    o GCHEM: finish reorganizating the package
1758      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1759        (introduces another 3D-array for each passive tracer, but only if
1760        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1761        gchemTendency is not needed because the timestep is done separately)
1762      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1763      - GCHEM is now---more or less cleanly---separate from PTRACERS
1764      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1765        so clear to me how that should be done in a general way.
1766    o CFC: improve formatting of output in CFC_ATMOS
1767    o PTRACERS:
1768      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1769        that ALL experiments with ptracers enable can be checked. This makes
1770        GCHEM_MONITOR obsolete.
1771      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1772        monitorFreq
1773      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1774    o add PTRACERS (PTR0[1-5]) to testreport output
1775    o exf_check_range:
1776      * default changed to .TRUE.
1777      * will check values for niter0 if debLevA, every timestep if debLevB
1778      * STOP in exf_check_range if 'out of range'
1779      * range chosen generous to allow for potential extema
1780      TBD: a version with stricter range
1781           permitted range would be runtime parameters
1782    o GMredi:
1783      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1784      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1785      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1786    o GCHEM:
1787      - move call to GCHEM_FORCING_SEP, so that it is now called before
1788        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1789      - introduced a useGCHEM runtime flag and applied it everywhere.
1790      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1791        this flag is now only visible within GCHEM-pkg routines.
1792      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1793        be replaced by a 3D array that is computed before thermodynamics; for
1794        this, the tracer ID iTracer had to be included into the parameter list
1795        of ptracers_forcing
1796      - set up forward_step to call gchem_forcing, that will replace
1797        gchem_forcing_int in ptracers_forcing
1798      - cleaning up
1799    o small cleaning of exch2: remove files that are also in eesupp/src
1800    
1801    checkpoint56
1802    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1803    o mnc: cleanup "full" files--fixes out-of-memory problem
1804    o ECCO-GODAE
1805      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1806      * fully merged and updated from SIO code
1807        windstress sign change affects
1808        - exf_inscal_[u/v]stress
1809        - sign of xx_tau[u/v] adjustments
1810        - signs in cost_scat
1811      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1812      * natl_box_adjoint updated and compressed
1813      * 2-level checkpoint switch added
1814        (tested in EXP. 1 of natl_box_adjoint)
1815      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1816    o SVD
1817      * first complete, non-hacked version for SVD calculations
1818      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1819        performed via direct access files admtlm_vector.it????
1820        (via ctrl_[un]pack)
1821      * optimcycle is used for ARPACK iteration counter
1822        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1823      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1824        and add linear transforms where necessary
1825      * controls are initial/final SST, SSS (can be extended; need to check
1826        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1827    o mdsio: filename info to both stderr, stdout
1828    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1829      from sign change
1830    
1831    checkpoint55j_post
1832    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1833      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1834    o add consistent build directories and .cvsignore files to verification
1835    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1836    o make all subroutines 30 or less characters in length for certain older
1837      compilers to work (a thorough search only turns up two routines in
1838      pkg/ptracers)
1839    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1840      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1841    
1842    checkpoint55i_post
1843    o change arrays for total vertical diffusivity (2.D if explicit,
1844      3.D if implicit) ; each ptracer uses its own background value.
1845    o added mnc/NetCDF output capability to ocn_compon_interf
1846      - added bits to verification/cpl_aim+ocn so that it can run on
1847        ITRDA and other clusters without the mpirun "-wd" option
1848    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1849      configuration
1850    o give MNC the ability to create additional files rather than
1851      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1852      - the default is just less than 2GB which is a practical limit
1853        on many systems
1854    o Compute the non-local term using either KPP vertical diffusivity (=default)
1855       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1856    
1857    checkpoint55h_post
1858    o add verification test "vermix"
1859    o remove all the *_ioinc flags and replace with the single global
1860      outputTypesInclusive flag
1861    o allow to set a vertical profile of vertical diffusivity for T & S
1862    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1863    o useMNC moved from data.mnc to data.pkg
1864    
1865    checkpoint55g_post
1866    o Renaming carbon AD experiments to comply with testreport conventions
1867    o Updating adjoint of Held-Suarez hs94.1x64x5
1868    o Fixing directives for non-ECCO forward_step, after ECCO directives
1869      have been fixed to avoid recomp. of do_oceanic_phys
1870      Works well for global_ocean.90x40x15,
1871      but recomp. issue remains for carbon
1872    o Updating adjoint output for natl_box_adjoint after
1873      pkg/ecco has been modified (see taga c55d_post)
1874    
1875    checkpoint55f_post
1876    o rename to timeave_init_fixed
1877    
1878    checkpoint55e_post
1879    o some delicate re-shuffle of store directives to avoid one
1880      extra call of do_oceanic_physics
1881      affects ecco_the_main_loop.F, do_oceanic_physics.F
1882      checkpoint_lev1_directives.h
1883    o NB: this may break global_ocean adjoint temporarily,
1884      but it is clear how to fix it. Will do later, need this now.
1885    
1886    checkpoint55d_post
1887    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1888    o ecco_cost_weights is modified to 1x1 runs
1889    o modifs to allow observations to be read in as
1890      single file or yearly files
1891    o enable to read exf forcing fields as either
1892      single file or yearly files (flag useExfYearlyFields)
1893    checkpoint55d_pre
1894    
1895    o switch between 2-level and 3-level checkpointing
1896    o add ability of MNC to write local and "partial" (eg. 2D slices where
1897      the full 3D field is never actually stored) arrays to NetCDF files
1898      with the correct (that is, the complete multi-dimensional) set of
1899      array indicies
1900      - used in mom_vecinv() to write the diagFreq output
1901      - tested (demonstrated) in verification/aim.5l_cs
1902    o further mnc-ification
1903      - add verification/lab_sea to the list with mnc setups
1904      - fix undefined mnc v-names in cd_code
1905      - add kpp to mnc output (both snapshot and timeave)
1906    o non-hydrostatic code
1907      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1908        in calc_gw.F
1909      - defaults to viscAh
1910      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1911        friction or Leith) in non-hydrostatic mode, as long as there is
1912        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1913    o pkg/cost
1914      extend simple cost functions to treat time mean quantities
1915      (T,U,V) via cost_accumulate_state from cost_tile
1916    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1917        be 2 times larger than the minimum size the advection scheme requires.
1918        now get a perfect conservation of salt in advect_cs test-exp (updated)
1919    o GGL90 (Gaspar's TKE mixed layer)
1920      - add horizontal diffusion of TKE, requires exchanges in
1921        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1922        default. In OPA there is no horizontal diffusion of TKE but the
1923        mixing coefficients are computed from a horizontal average of TKE of
1924        6 points or so. I think that diffusion has a little more physical
1925        justification.
1926      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1927        was in vain)
1928      - mask tke-variable in ggl90_init
1929    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1930    o fix biharmonic diffusion on CS-grid.
1931    o more obcs stuff
1932      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1933        for reading boundary values. This routine is called from
1934        obcs_prescribe_read
1935      - updated obcs_check
1936      - changed sponge layer relaxation parameter units for days to seconds
1937      - turned off sponge layer by default
1938      - changed argument list of OBCS_CALC to myTime+deltaTclock
1939      - fixed about 35 bugs in obcs_external_fields_load
1940    
1941    checkpoint55c_post
1942    o obcs stuff
1943      - new runtime flags useOBCSprescribe, useOBCSbalance
1944      - re-arranged obcs_calc
1945      - moved exf_getobcs to obcs_prescibe_read
1946        obcs_prescibe_read is called after ORLANSKI stuff
1947        and independent of it (executable can contain all).
1948      - updated obcs_check
1949      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1950        These may be necessary only if tangential velocities are
1951        prescribed at OB, not sure, needs testing.
1952    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1953      which simplifies the calls and passes the ifc check-bounds test
1954    
1955    checkpoint55b_post
1956    o add a 2D scalar, Z location, exchange_2 routine.
1957    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1958      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1959      affects advect_cs results (for the wrong reason): update output.txt
1960    o use a more standard discretization for biharmonic viscosity ;
1961     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1962      affects results of dome set-up: update output.txt
1963    o fix gad_advection.F (CubedSphere part), back to version 1.23
1964    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1965    
1966    checkpoint55a_post
1967    o merged code to
1968      * prescribe/read time-dependent open boundaries
1969        (works in conjunction with exf, cal)
1970      * sponge layer code for open boundaries
1971      * each boundary N/S/E/W now has its own CPP option
1972        (healthy for the adjoint)
1973    
1974    checkpoint55
1975    o up-to-date adjoint of previous breaks
1976      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1977      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1978      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1979      - carbon: * remove tr1-related adjoint verification
1980                * add ptracer as control variable
1981    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1982      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1983    
1984    checkpoint54f_post
1985    o in verification/carbin/ remove experiment related to
1986      ALLOW_PASSIVE_TRACER (array tr1 etc)
1987      code_ad/ input_ad/ results_ad
1988    
1989    o add two new packages
1990      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1991        + subject to optimization (memory)
1992      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1993        + subject to reordering (many GOTOs in the original code)
1994        + so far opps is called for every (i,j) point, and then operates in
1995          the vertical; one may want to reorder the scheme in order operate in
1996          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1997          fields)
1998    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1999      - all verification tests compile and run with linux_ia32_g77
2000      - defaults are compatible with current input files--nothing
2001        should change if you were not previously using MNC
2002      - MNC output has been added in numerous places (eg. timeave)
2003        but there are still a few writes not yet do-able with MNC
2004        (this is in progress)
2005      - flags now allow for either/or/both use of MDSIO and MNC and
2006        documentation will soon follow
2007      - numerous small formatting cleanups for ProTeX
2008    o add version info (via BUILD_INFO.h) to MNC and stdout
2009    
2010    checkpoint54e_post
2011    o add two new packages
2012      - pp81 (Packanowski and Philander, 1981), Richardson number and
2013        stratification dependent mixing
2014      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2015      - these scheme operate in a similar manner as KPP (without ghat, of
2016        course), however there is only one diffusivity that is used for both
2017        temperature and salinity (and passive tracers)ç
2018    o add offline package
2019    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2020      provided by Stephanie Dutkiewicz
2021    o genmake2: add ability to search for C compilers and cleanup test output
2022      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2023    
2024    checkpoint54d_post
2025    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2026    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2027      leading to additional shift by 5 days each year of integration
2028       (i.e. leading to considerable offset over the years)
2029    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2030    o start with no AB and no initial filtering (staggerTimeStep):
2031      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2032    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2033      (external loading & cpl import/export stay in forward_step.F)
2034    o update coupling interface to work with new staggerTimeStep
2035    o change MDSIO ptracers_pickup.
2036    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2037    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2038    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2039    
2040    checkpoint54c_post
2041    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2042      this affects (truncation error) output.txt of test-exp:
2043       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2044    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2045    o change Qnet to always be the net heat flux, (+upward).
2046      affects (truncation error) output of natl_box exp.: updated
2047    o define the max number of passive tracers in PTRACERS_SIZE.h
2048    o start to test mnc routinely in exp0
2049    o add sea-ice loading (sIceLoad) as a new forcing field.
2050    
2051    checkpoint54b_post
2052    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2053       impressive on Altix and Opteron systems)
2054    o diagnostics can now write NetCDF files through the mnc package
2055    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2056    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2057    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2058      affects (truncation error) output of lab_sea & natl_box exp.: updated
2059    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2060    
2061    checkpoint54a_post
2062    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2063    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2064    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2065    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2066      + internal_wave (shift in writing cg2d_ini_res)
2067    checkpoint54a_pre
2068    
2069    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2070      - modified verification/lab_sea and natl_box_adjoint accordingly
2071    
2072    checkpoint54
2073    checkpoint53g_post
2074    o prepare splitting of thermodynamics: store convect.counter in common block
2075    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2076      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2077    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2078    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2079    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2080    o restore adjointability
2081    
2082    checkpoint53f_post
2083    o modifications that affect AIM experiment results (update output.txt):
2084      - no advection of S at top interface Nr (pkg/generic_advdiff)
2085      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2086    o AIM pkg:
2087      - include stability function into surf.Flux derivative relative to Tsurf
2088      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2089    
2090    checkpoint53e_post
2091    o merged cylindrical coord configuration
2092    o added rotating_tank experiment
2093    checkpoint53e_pre
2094    
2095    checkpoint53d_post
2096    o faulks upgraded: re-generate output.txt that have changed:
2097       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2098    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2099    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2100    o added Sadourny discretization of Coriolis
2101      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2102      - re-enabled use of omega3 (useAbsVorticity)
2103    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2104      vector-invariant equations
2105      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2106    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2107      hopefully without new bugs
2108      - still to do: biharmonic friction for non-hydrostatic w
2109    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2110    o regenerated output for global_ocean_ebm (using -ieee)
2111    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2112      of mom_common/
2113      - simple re-arrangement of instructions within computing loop
2114    checkpoint53d_pre
2115    
2116    checkpoint53c_post
2117    o new version of coupler for AIM+thSIce and Ocean models
2118     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2119     - land: change Evaporation of snow
2120     - aim with thSIce: fix bug in snow-precip.
2121    o changes to calc_gw.F
2122     - bug fix for w^2 term near the bottom boundary
2123     - (hopefully) improve the lateral slip boundary condtions for use with
2124        partial/looped cells
2125      - because the bug fix changes two verification experiments anyway (exp5
2126        and plume on slope), change the lateral boundary condition from half slip
2127        to the value of no_slip_sides
2128    o ebm package wasnt quite up to the parallel task. Fixed that.
2129    o Adjoint of EBM package + verification
2130      * TLM OK
2131      * ADM not sufficient accuracy yet (needs further testing)
2132    
2133    checkpoint53b_post
2134    o Commiting new energy balance model to repository
2135      * package is pkg/ebm
2136      * verif. is verification/global_ocean_ebm
2137      * references are in ebm_driver.F
2138    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2139    C        Global thermohaline circulation. Part I:
2140    C        Sensitivity to atmospheric moisture transport.
2141    C        J. Climate 12(1), 71-82
2142    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2143    C        Global thermohaline circulation. Part II:
2144    C        Sensitivity with interactive transport.
2145    C        J. Climate 12(1), 83-91
2146    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2147    C        Destabilization of the thermohaline circulation
2148    C        by atmospheric eddy transports.
2149    C        J. Climate 7(12), 1870-1882
2150    o Will need long integration testing.
2151    checkpoint53b_pre
2152    
2153    o created pkg/mom_common in preparation for variable viscosity code
2154    o renamed and split ini_mnc_io
2155    o pkg/land: only liquid water can diffuse or run-off
2156    o AIM using land: soil wetness availability account for snow
2157    o added printMapIncludesZeros to EEPARMS namelist
2158    
2159    checkpoint53a_post
2160    o restore TAMC compatiility for exf_constants.h
2161      (no usage of _d in .h)
2162    o Additional storing in KPP in an attempt to fix
2163      TAMC problem with adjoint of KPP code.
2164      (no success...)
2165      Identical code works fine with TAF.
2166    o Fixed verification/natl_box_adjoint experiments.
2167      Initial conditions for Experiments 4 and 5 are now
2168      set to "SEAICE_initialHEFF=0", which is more reasonable,
2169      and hence gives results closer to that of Experiment 2.
2170      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2171    
2172    checkpoint53
2173    o stable checkpoint with up to date adjoint
2174      TLM tests only run for 1st grdchk at the moment. Its unclear if
2175      this is a code problem or a problem with resetting code for g_
2176      variables that is being autogenerated wrong.
2177      Otherwise:
2178       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2179       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2180         are both still in chaos following their security messes.
2181    
2182    checkpoint52n_post
2183    o various build (mostly genmake2) changes including:
2184      - ability to build/run more easily within Cygwin and MacOS X
2185      - more complicated Makefiles with a stronger dependence on Gnu Make
2186    o pkg/seaice modifications
2187      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2188        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2189        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2190      - changed proxy for geostrophic velocity and updated
2191        verification/lab_sea/results/* accordingly
2192      - removed ADI dynamic solver from pkg/seaice
2193      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2194        they caused a segmentation fault under certain circumstances
2195      - removed unused field WATR
2196    o bug fix in exf-package:
2197      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2198         now reflect that.
2199    o small fixes in the cal-package:
2200      - set reference date to first of January for the 'model'-calendar
2201      - failing of cal_CheckDate in cal_FullDate now actually results in a
2202        warning
2203    o small modifications in exf-package to increase flexibility:
2204      - change climtempfreeze from a constant to a runtime parameter that
2205        is specified in data.exf_clim (default = -1.9)
2206      - introduce runtime parameter windstressmax (default = 2.0) that is
2207        specified in data.exf
2208    o fix in pkg/thsice:
2209      - update Evap (Tsf changes) to be consistent with Latent heat flux
2210      - maintain snow precipitation unchanged (even if Tsf >=0).
2211     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2212    
2213    checkpoint52m_post
2214    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2215      this does not change any of the results, because myIter=0 in swfrac always
2216      lead to jwtype=2 (the default anyway), but the call makes little sense
2217      as a default
2218    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2219    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2220      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2221    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2222    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2223    o extending useSingleCpuIO option to work with new exch2 I/O format
2224      - old-style, missing-tile I/O is still accessible by defining CPP
2225        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2226    o monitor package can write to NetCDF files and/or STDOUT
2227    o fix re-definition bug in MNC_GRID_INIT_ALL()
2228    o doc/api_reference added
2229      - a framework for building an API Reference Manual using all
2230        the "protex" comments embedded in the code
2231      - see pkg/generic_advdiff, pkg/mnc for examples
2232    o MNC:
2233      - make myThid the last argument for all subroutines
2234      - new default for the grid files: NO halos
2235      - add useMNC and other run-time flags
2236      - separate per-file-group handling of the unlimited dimension
2237      - early initialization of MNC w/ flags read at the eeboot stage
2238        and lookup tables set in initialize_fixed
2239      - write all MNC output to a freshly-created directory
2240    o thermodynamics sea-ice (thsice) is now tested with testreport.
2241    o test exp. advect_cs: use the standard cs32 grid ; update output.
2242    o Added functionality to grdchk:
2243      pick global i,j,k position (or nearest wet) where to perform check.
2244    
2245    checkpoint52l_post
2246    o new land formulation:
2247      a) use ground enthalpy as prognostic variable to ensure exact
2248         energy conservation.
2249      b) account for water temperature and for latent heat of freezing
2250         in all processes (rain, run-off, ground storage)
2251      c) compute surface and ground temperature implicitly.
2252    o aim_v23 modification for new land model:
2253      a) Treat separately land / ocean / sea-ice surface fluxes
2254         to allow implicit computation of land & sea-ice surface temp.
2255      b) add snow precipitation.
2256    checkpoint52l_pre
2257    
2258    o fix problem (when 1 tile is empty) in min/max monitor.
2259    o fix bug in timeAve (u,vZetatave in common block)
2260    o no restoring terms under ice for pkg/seaice
2261    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2262    o bug fix for pkg/seaice pickups
2263    o change MNC call locations and add coordinate attributes
2264    o mask vorticity at the corner ; affects global_ocean.cs output
2265    o fix ini_curvilinear_grid ; test CS experiments with mpi
2266    o aim.5l_cs: modify sea-ice fraction input file ; update output
2267    o exf: Adding simple range check routine for exf fields after read
2268    
2269    checkpoint52k_post
2270    o removed top-level directory "diags"
2271      - we migrated these functions to pkg/timeave a long time ago
2272    o fixed bug introduced in pkg/monitor
2273    o accuracy ctrlprec = 32 insuffient for gradient checks using
2274      averaged fields (I/O via cost_averages)
2275      -> use ctrl.h in active_file*.F to control I/O precision.
2276    o paramter list of CALL ADTHE_MAIN_LOOP
2277    o added initial do_the_model_io to ecco
2278    o set all ...Freq to zero after cost_final
2279      taveFreq, dumpFreq, pChkptFreq
2280    o MAIN and ECCO differentiability restored
2281    
2282    checkpoint52j_post
2283    o fix nchklev in tamc.h for global_ocean...
2284    o Bringing flow and store directives up-to-date
2285    o Really weird thing!
2286      call do_the_model_io from the_main_loop with parameters
2287      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2288      TAF places a faulty re-call of initialise_varia
2289      after cost_final call which should not be there!
2290    checkpoint52j_pre
2291    
2292    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2293      error messages
2294    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2295    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2296      debug output
2297    o modfied mdsio_writefield.F to handle non-global files under exch2
2298    o update AIM Cubed-Sphere exp (aim.5l_cs):
2299      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2300    o update AIM Equatorial Channel exp:
2301      use standard aim_v23 pkg and change the SST fields to be more realistic.
2302    o globalFile now works with exch2
2303    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2304      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2305    o limit timeave output for hi-res integrations
2306    
2307    checkpoint52i_post
2308    o removed CPP_EEOPTIONS.h from verification/*/code
2309    o updated the tiling for global_ocean_pressure
2310    checkpoint52i_pre
2311    
2312    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2313      the old pkg/aim).
2314    
2315    checkpoint52h_pre
2316    o shortened offending lines in exch2_send_rx?.template
2317    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2318    o genmake2: add build & execute test for NetCDF code
2319    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2320      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2321    o added useSingleCPUIO flag to monitor.F and mon_out.F
2322    o added temporary hack for sea-ice dynamics on the cube:
2323      metric terms are ignored and it is assumed that
2324      there is no sea-ice on cube faces 1, 2, 4, and 5.
2325    
2326    checkpoint52f_post
2327    o added exch2 cube routines to pkg/exch2
2328    o modified hs94.cs-32x32x5 to use it
2329    o added new grid files to hs94.cs-32x32x5
2330    checkpoint52f_pre
2331    
2332    checkpoint52e_post
2333    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2334      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2335    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2336      to work with implicit vertical advection and AB ;
2337    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2338    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2339     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2340    checkpoint52e_pre
2341    
2342    o fix bug in impldiff when Nr=1 or Nr=2.
2343    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2344    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2345    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2346      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2347    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2348    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2349    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2350    
2351    checkpoint52d_post
2352    o re-tiled many expts to allow comparison in multi-processor mode
2353      - updated output accordingly
2354      - changed hs94.128x64x5 to use intial T from file rather than use the
2355        random number generator
2356    o add infrastructure in model routines for fizhi and gridalt packages
2357    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2358    o changes to permit hi-res, cubed-sphere, configuration
2359      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2360      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2361      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2362        of surface winds for the cube
2363      (A verification experiment, based on global_ocean.cs32x15, but with
2364       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2365       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2366       complete with example surface forcing files and matlab scripts to look
2367       at the output and compare it with that of global_ocean.cs32x15.)
2368    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2369       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2370       to conform to the common rule.
2371    o check-in the first version of the coupler + interfaces for multi-components
2372       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2373       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2374       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2375       - ocean and atmos. share the same horizontal grid (no interpolation).
2376       - exchanges between component and coupler is done in forward_step
2377    o new verification experiment, cpl_aim+ocn:
2378       coupled ocean - AIM atmosphere on cs32 grid.
2379    
2380    checkpoint52d_pre
2381    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2382    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2383    
2384    checkpoint52c_post
2385    o Fixing OPTIONS files for use of exf:
2386      - ALLOW_ECCO not needed
2387      - ECCO_CPPOPTIONS.h should not be included from
2388        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2389        as has been the case in the past
2390      - All cal/exf related options are currently set in
2391        single header file. Should remain so until we
2392        agree on a consistent new policy.
2393    o Removed all CPP options for cal package.
2394      cal has no more CPP options.
2395    o modified STOREs in GAD_ADVECTION
2396    o corrected key comp. for passkey
2397    
2398    checkpoint52b_post
2399    o new version: "thsice" of thermodynamic sea-ice pkg:
2400     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2401     - modify fluxes but do not change theta directly;
2402     - light cleaning of bulk_force pkg (still needed with thsice).
2403     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2404       + output_thsice.txt to test thsice & bulk_force pkgs.
2405    o put back grid & coriolis monitor output.
2406    checkpoint52b_pre
2407    
2408    o call "do_the_model_io" at the beginning (=> dump initial state)
2409    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2410    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2411      (need info on NUMBER_OF_PTRACERS)
2412    o missing PTRACERS headers in some routines
2413    o default tamc.h in pkg/autodiff supposed to crash
2414      to ensure proper customization
2415    
2416    checkpoint52a_post
2417    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2418      - moved surfaceTendencyTice from pkg/seaice to main code
2419      - subroutine FREEZE_SURFACE now limits only surface temperature
2420        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2421        => new output.txt for global_ocean.cs32x15 & global_with_exf
2422      - keep the old version of FREEZE for backward compatibility;
2423        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2424      - corresponding modifs for TAF directives
2425    o added surface flux output variables to TIMEAVE_STATVARS
2426    o time-averaged output for pkg/ptracers
2427    o fix problem with ECCO-related divided adjoint
2428      snapshot file was missing some ad-variables,
2429      but no warning issued by TAF
2430    
2431    checkpoint52a_pre
2432    o some bug fixes for #undef REAL4_IS_SLOW
2433    
2434    checkpoint52 = ecco_c52_e35
2435    o after testing adjoints of checkpoint51u_post
2436    
2437    checkpoint51u_post
2438    o this is the post-merge tag of the ecco-branch
2439      (needs another clean checkout and re-testing)
2440    o various natl_box_adjoint configs and results
2441      but no input fields
2442    o obcs adjoint not yet merged!
2443    o adding ECCO global 1x1 and 2x2 degree configs
2444    o updated/extended some store directives for seaice
2445    o pkg/ecco now containes ecco-specific part of cost function
2446    o top level routines the_main_loop, forward_step
2447      supersede those in model/src/
2448      previous input data.cost now in data.ecco
2449      (new namelist ecco_cost_nml)
2450    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2451    
2452    checkpoint51t_post
2453    o this is the pre-merge tag of the ecco-branch
2454    
2455    checkpoint51s_post
2456    o cleanup: removed various obsolete #define-s
2457    o pkg/grdchk
2458      - renamed 'ph-grd 3' to 'grad-res'
2459      - merged from ecco-branch
2460        (remaining bug fixes for obcs gradient checks)
2461      - additional high-precision output for testreport
2462        (grep for 'precision_grdchk_result')
2463    
2464    checkpoint51r_post
2465    o cleaned up or removed CPP_OPTIONS.h files
2466    o updated results for some of the tests to reflect the new
2467      optfiles (-ieee: -O0 instead of -O3)
2468    
2469    checkpoint51q_post
2470    o cd_code:
2471      - moved cd_scheme.F -> cd_code_scheme.F
2472      - separate read_checkpoint from cd_code_ini_vars.F
2473      - separated cd_code part from write_checkpoint
2474      - updated AD_SOURCE, generated .flow
2475      - added CD_CODE_VARS.h to the_main_loop
2476      - Moving cd_code specific store dir.s to pkg/cd_code
2477    o ctrl package totally restructured
2478      - pack/unpack now optional and decoupled from
2479        xx_/adxx_ I/O
2480      - ctrl_pack/unpack cleaned
2481        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2482      - confined inclusion of AD_CONFIG.h to where necessary.
2483    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2484    
2485    checkpoint51p_post
2486    o create initial cd_code package
2487      - WARNING: the initialization of fields within packages
2488        is broken because INI_FIELDS (where READ_CHECKPOINT is
2489        called) is called *before* PACKAGES_INIT_VARIABLES.
2490        This seems to be backwards since
2491        1) its important to initially zero the entire field including
2492           the "halo" region
2493        2) zeroing needs to be done *before* reading pickup info
2494           and the pickup call might or might not happen in any
2495           particular run
2496      - this needs an overhaul for R2
2497    o cleanup verification/*/code/GMREDI_OPTIONS.h
2498    o cleanup testreport
2499    
2500    checkpoint51o_post
2501    o bringing AD-related verif's up to date with genmake2
2502      - carbon/
2503      - global_ocean.90x40x15/
2504      - hs.94.1x64x5/
2505      - (front_relax/ )
2506    o (more) consistent directory structure for AD-related verif.'s
2507    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2508    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2509    o bug fix in find_alpha.F for MDJWF:
2510      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2511        change rho -> rho-rhoConst
2512      - replace call find_rho to find_rhonum
2513    o initialisation of rFlx extended to full array (required by TAF)
2514      and shifted to thermodynamics
2515    o removed PTRACERS.h in ptracers routine
2516    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2517    o Correcting initialisations for fVerU, fVerV.
2518    o helping TAF to recognize dependency on kUp for
2519      fVerU, fVerV
2520    o Replacing delZ by delR in pkg/ctrl/
2521    checkpoint51o_pre
2522    
2523    o undid all of cp51 pending some cleanups and discussion
2524    o added the [#include "AD_CONFIG.h"] statement to all files that need
2525       it for adjoint/tl #defines
2526     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2527     o removed tools/genmake since it no longer works
2528    
2529    checkpoint51n_post
2530    o modifications to make FREEZE flux visible to pkg/kpp
2531      - moved surfaceTendencyTice from pkg/seaice to main code
2532      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2533      - subroutine FREEZE now limits only surface temperature
2534        (this means new output.txt for global_ocean.90x40x15,
2535         global_ocean.cs32x15, and global_with_exf)
2536    o added surface flux output variables to TIMEAVE_STATVARS
2537    
2538    checkpoint51n_pre
2539    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2540    o added [#include "AD_CONFIG.h"] to all files that use the following
2541      defines:
2542      - ALLOW_ADJOINT_RUN
2543      - ALLOW_TANGENTLINEAR_RUN
2544      - ALLOW_ECCO_OPTIMIZATION
2545    
2546    checkpoint51m_post
2547    o incorporating changes to get TAMC/TAF working in genmake2
2548      - added new TAMC/TAF targets to the Makefile
2549      - various cleanups related to package handling
2550      - these changes should have no impact on the forward model
2551    
2552    checkpoint51l_post
2553    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2554     - faster algorithm for cal_addtime.F
2555     - higher precision arithmetic, where needed
2556     - pkg/exf *startdate variables changed from calendar date to
2557       model integration time
2558    
2559    checkpoint51l_pre
2560    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2561    o enable to apply restoring on S & T only in a latitude band.
2562    o update output (external_forcing_surf modif. change truncation errors)
2563       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2564    
2565    checkpoint51k_post
2566    o change default to: useNHMTerms=.FALSE.
2567     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2568       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2569     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2570        exp1, ideal_2D_oce
2571     - change data file of oceanic exp (leave the results unchanged for now)
2572       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2573    o set gravitySign automatically according to the vertical coordinate used
2574      (and change sign: back to "logical" value: +1 when R increases downward)
2575    o added an include barrier to the default CPP_OPTIONS.h and
2576      removed the #include "PACKAGES_CONFIG.h" from it
2577    o fix a bug in mom_fluxform (from chk51j_post)
2578    
2579    checkpoint51j_post
2580    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2581    o adjusted some flow directives (dynamics, thermodynamics)
2582    o added cubed-sphere case to test cost function
2583    o heckpoint_lev?_directives.h now include
2584      pkg-specific directives, whenever those are enabled.
2585    o Moving pkg-specific flow directives to corresponding pkg
2586      Moving pkg-specific differentiation list to corresponding pkg
2587      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2588      ---> conventions are
2589           - pkg_ad.flow
2590           - pkg_ad_diff.list
2591           - pkg_ad_check_lev?_dir.h
2592    
2593    checkpoint51i_post
2594    o merge of the branch-genmake2
2595      - knowingly breaks the older genmake
2596      - automatic generation of all ALLOW_${PKG_NAME} defines
2597      - new testreport supersedes older testscript
2598    o large number of package inclusion and header cleanups
2599    checkpoint51i_pre
2600    
2601    o new output for adjoin of global ocean vector invariant
2602    o fix for checkpoint of thermodynamic seaice and bulk_force
2603    o Steph gchem various cleanups
2604    
2605    checkpoint 51h_pre
2606    o fixed some single quotes
2607    o modify gchem pkg to be more versatile
2608    o modifications to clean up dic pkg
2609    o add pkg/cfc
2610    
2611    checkpoint51g_post
2612    o provide links for ARPACK and ADM*TLM
2613    o start removing verification/vero/
2614    o update AD-related stuff
2615      (in particular some IF-statements in model/src/ routines)
2616    o adding to verification/global_ocean.90x40x15/ adjoint of
2617      vector invariant setup
2618    
2619    checkpoint51f_post
2620    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2621    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2622      of tracer Green's fucntions for ocean inversion project.
2623    
2624    checkpoint51f_pre
2625    o Added on-the-fly spatial interpolation capability
2626        "USE_EXF_INTERPOLATION" to pkg/exf.
2627      - This is a temporary Cartesian-grid hack until
2628        the super-duper ESMF coupler becomes available.
2629      - See verification/global_with_exf/README for usage example.
2630      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2631        flags and modified pkg/seaice accordingly.
2632    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2633        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2634        non-local transport term.
2635    
2636    checkpoint51e_post
2637    o pkg/mom_vecinv:
2638      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2639      - add time-ave diagnostic of vorticity advection.
2640    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2641    o atmospheric geopotential: - include water vapor effect;
2642                                - use p^kappa in p* scaling.
2643    o land pkg: read initial state from files.
2644    o AIM : add stratospheric drag in the upper level
2645    
2646    checkpoint51d_post
2647    o change function ILNBLNK (=> last non-blank char.) to return zero
2648      (instead of the string length) when the string. char is empty
2649    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2650    o modif's to restore TAMC compatibility
2651      - avoid "_d" constructs in PARAMETER declarations
2652      - avoid interrupting lines by comment lines
2653    o Use cluster local disks for purely local I/O
2654      vs. globally visible disks needed for ctrl stuff
2655      (merged from ecco-branch)
2656      - new active_file_loc... and mdsio_..._loc routines
2657      - affected packages: autodiff, ctrl, grdchk, mdsio
2658    
2659    checkpoint51c_post
2660    o introducing integer flag debugLevel
2661      - debLevZero: suppress all output
2662      - debLevA: standard
2663      - debLevB: equivalent to current debugMode=.TRUE.
2664    o introducing pathname variable mdsioLocalDir for mdsio
2665      that can be specified at runtime
2666      (relevant for cluster I/O to local disk)
2667    `
2668    >>>checkpoint51b_post
2669    adjoint of ptracers
2670    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2671    o extended state in checkpoint_lev?, etc.
2672    o alternative ctrl/cost with tr1 or ptracer
2673    o new comlev1_bibj_ptracers
2674    o new ptracers.flow
2675    o made ptracers_forcing same as external_forcing_s
2676    o added verification for adjoint with ptracers
2677      - adm. grdchk fail so far
2678      - tlm. grdchk OK
2679      - checked tapelev/comlev recomputations: OK
2680    <<<checkpoint51b_pre
2681    
2682    checkpoint51a_post
2683    o added code for biogeochemistry package
2684      - new pkgs: dic, gchem
2685      - new subroutine in ptracers
2686    o modify code for biogeo packages
2687      - in model/src and pkg/ptracers
2688    
2689    checkpoint51
2690    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2691      - autodiff, ctrl, exf, grdchk, seaice
2692      kept separate packages
2693      - cost, ecco, obcs
2694    o updating verification/internal_wave, verification/lab_sea
2695      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2696    
2697    checkpoint50i_post
2698    o Preparing next differentiable checkpoint and sync
2699      of MAIN vs. ecco-branch
2700      - 1st step: this one is differentiable
2701      - 2nd step: next(! not this) checkpoint will have updated packages
2702                  from ecco-branch)
2703    
2704    checkpoint50h_post
2705    o new package "land": provide surface BC for AIM.
2706    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2707    o AIM: use true log-P extrapolation for near surface temp (= as in
2708        F.Molteni paper) ; update aim.5l_cs output.
2709    o New variable in PARM03 for more flexible pickups
2710    o somewhat cleaned package initialisation sequence for
2711      ctrl/ cost/ ecco/ in packages_... routines
2712    
2713    checkpoint50g_post
2714    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2715      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2716      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2717        made the default because of faster convergence than ADI
2718    
2719    checkpoint50f_post
2720    o exf totally restructured
2721      - replaced all exf_set_ routines by one generic exf_set_gen.F
2722        and made sure it's still differentiable
2723      - split exf_getffields.F into new exf_bulkformulae.F
2724      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2725      - updated adjoint/makefile and relevant verif. accordingly
2726    
2727    checkpoint50f_pre
2728     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2729          + change Evap over land. (update aim.5l_cs output)
2730     o added missing .cvsignores and made uniform across expts
2731     o changed configuration of tidal_basin_2d expt
2732     o added pkg/debug functions for tracing code in fatal crashes
2733     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2734     o new fn in pkg/monitor to stop model if solution grows too big
2735     o removed lots of single quotes from comments
2736    
2737    checkpoint50e_post
2738    o make KPP work with PTRACERS
2739     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2740       nearly a copy of kpp_transport_s
2741     - there is no analogue to SurfaceTendencyS, so I have to use
2742       gPtr(of the surface layer) instead
2743    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2744    checkpoint50e_pre
2745    
2746    checkpoint50d_post
2747    o change kpp output from multiple-record state files to single-record state
2748      files analogous to write_state.F
2749    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2750      analogous to the cg2d-related output.
2751    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2752      so that writing to internal file fn (with length 512) fails.
2753    checkpoint50d_pre
2754    
2755    checkpoint50c_post
2756    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2757    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2758    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2759    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2760    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2761    
2762    checkpoint50c_pre
2763    Merging from release1_p13:
2764    o bug fix for pkg/seaice dynamic solver
2765    o Added SEAICE_initialHEFF to pkg/seaice
2766    
2767    checkpoint50b_post
2768    o store u*,v* in gU,V instead of in guNm1,gvNm1
2769    o in order to put the momForcing out of the Adams-Bashforth:
2770      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2771      to timestep.F
2772    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2773    o re-generate output for highly sensitive test-exp:
2774       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2775    
2776    checkpoint50b_pre
2777    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2778    o corrected CPP option mismatch in exf_Bulk... functions for case
2779      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2780    
2781    checkpoint50a_post
2782    o Bug fix for merging between c50 and KPP.
2783      ikey was passed from thermodynamics to kpp_calc via
2784      common block rather than being recomputed in kpp_calc,
2785      in contradiction with new key itdkey.
2786      New key ikppkey created, and tamc.h headers updated.
2787    
2788    checkpoint50
2789    - 2nd step of merge with ecco-branch:
2790      merge changes in ecco-branch back into main trunk
2791    - bug fix in find_alpha
2792    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2793    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2794    - merged some sliced AD support routines
2795    
2796    checkpoint49
2797    merged from ecco-branch:
2798    o exf:
2799      - Enable initialisation of forcing fields to constant
2800        (runtime) values.
2801      - in exf_getffields.F
2802        Reduce i-/j-loop to interior domain, discarding overlaps.
2803        That also fixes wrong TAF-key computations for key_1, key_2
2804        with bulf formulae.
2805      - exf_init.F modify #ifdef for exf_init_evap
2806      - exf_getffieldrec.F, ctrl_getrec.F
2807        The following INT-usages are not safe:
2808          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2809          fldcount = int(fldsecs/fldperiod) + 1
2810        and were modified.
2811    o autodiff: checkpoint_lev...
2812      - updated storing for bulk formulae (some arrays were missing)
2813      - added state for seaice package
2814      - synchronized with main branch
2815    o DIVA:
2816      Modif.s in
2817      - the_main_loop.F
2818      - the_model_main.F
2819      and added cost_final_restore.F cost_final_store.F
2820      o With these changes, it is possible to fully separate
2821        the first forward run to compute the cost function (mdthe_main_loop)
2822        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2823        into separate model executions.
2824        This enables better tuning of DIVA to given queue sizes.
2825      o Loss of cost function value in consecutive DIVA runs is
2826        fixed by storing to 'costfinal' file.
2827      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2828        beginning/end of adjoint integration is accounted for.
2829      The current changes apply to TAF-1.4.26.
2830      TAF has one remaining bug, requiring one manual change
2831      (see MITgcm manual).
2832    o cal: synchronized between MAIN and ecco-branch
2833    
2834    checkpoint48i_post
2835    o Changes to restore differentiability of code w.r.t. previous tag
2836      (mostly adding new routines to make list and replacing
2837      pressure by totPhiHyd).
2838    o Updated and merged grdchk package
2839      - has both ADM and TLM checks
2840      - works for single- and multi-proc.
2841      - output cleaned
2842      - worked successfully for parallel DIVA
2843    o genmake:
2844      - Adding -platform=SP4
2845      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2846    o Modif. for DIVA:
2847      ctrl_unpack should not be called in intermediate DIVA interval.
2848      (similar thing would apply for active files such as
2849      tbar, sbar, psbar, which should not be reinitialised;
2850      only relevant for ecco-branch)
2851    
2852    checkpoint48h_post
2853    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2854    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2855    o Added SEAICE_initialHEFF to pkg/seaice
2856    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2857    
2858    checkpoint48g_post
2859    --- EOS:
2860    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2861      store total Potential in totPhyHyd for diagnostics & EOS.
2862    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2863    --- Pressure/geopotential gradient:
2864    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2865    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2866      ( changes results of global_ocean_pressure )
2867    o NLFS + z-coord.: add eta*Rho' contribution.
2868    o accurate phiHyd when using interface-W at the middle between 2 centers
2869     ( changes results of ideal_2D_oce )
2870    o includes r* 2nd term in potential gradient.
2871    
2872    checkpoint48f_post
2873    Merging from release1_p12:
2874    o Modifications for using pkg/exf with pkg/seaice
2875      - improved description of the various forcing configurations
2876      - added basic radiation bulk formulae to pkg/exf
2877      - units/sign fix for evap computation in exf_getffields.F
2878      - updated verification/global_with_exf/results/output.txt
2879    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2880      (SBO) core products, including oceanic mass, center-of-mass,
2881      angular, and bottom pressure (see pkg/sbo/README.sbo).
2882    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2883      to avoid negative values in shallow regions.
2884      - updated verification/natl_box/results/output.txt
2885      - updated verification/lab_sea/results/output.txt
2886    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2887    o Added useSingleCpuIO option (see PARAMS.h).
2888    o Updated useSingleCpuIO option in mdsio_writefield.F to
2889      work with multi-field files, e.g., for single-file pickup.
2890    o pkg/seaice:
2891      - bug fix in growth.F: QNET for no shortwave case
2892      - added HeffFile for specifying initial sea-ice thickness
2893      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2894    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2895      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2896    o pkg/seaice:
2897      - adjoint-friendly modifications
2898      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2899    
2900    checkpoint48e_post
2901    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2902    o dynamics: change definition of computational domain & adapt mom_fluxform
2903      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2904    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2905        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2906        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2907        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2908        inverted_barometer solid-body.cs-32x32x1
2909      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2910    
2911    checkpoint48d_post
2912    o in preparation for r*:
2913     a) use pre-computed gradient of hydrostatic potential:
2914        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2915     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2916        => affects results of glob_oce_pressure (different truncation error)  
2917      update output.txt of ideal_2D_oce & global_ocean_pressure
2918    
2919    checkpoint48d_pre
2920    o in preparation for r*:
2921      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2922      pass the 2 comp. of the grad. as arguments to momentum S/R.
2923      but for the moment, only used if it does not change the results.
2924    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2925    
2926    checkpoint48c_post
2927    Modifications in treatment of initial flux forcing controls
2928    to avoid extra storing of flux fields.
2929    
2930    checkpoint48c_pre
2931    o Added tidal_basin_2d experiment (currently 1D!)
2932    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2933    
2934    checkpoint48b_post
2935    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2936     (modification to pressure gradient not yet implemented)
2937    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2938      (for U & V) that are used for vertical advection of momentum.
2939    
2940    checkpoint48a_post
2941    o In preparation for r*, use temp. array to compute vertical transport
2942       in flux-form momentum pkg. => change results of few test-exp.
2943      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2944                        lab_sea, natl_box & plume_on_slope
2945    
2946    checkpoint48
2947    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2948    
2949    checkpoint47j_post
2950    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2951    o moved adexch from forward_step to addummy_in_stepping
2952    o added exch in ctrl_map_...
2953    o aveFreq.=0. at end of cost_final to avoid overwrite in
2954      reverse checkpointing loop
2955    o Yet more changes in gmredi:
2956      * adgmredi_calc_tensor
2957        avoiding all recomputation of gmredi_slope_limit
2958      * adgmredi_x/y/rtransport
2959        added flag for excessive storing to avoid recomp. of
2960        u/v/rtans, dTdx/y/z
2961        -> this is not really necessary and very memory-consuming
2962      * adgmredi_slope_psi:
2963        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2964      * gmredi_slope_limit
2965        re-activated full calculation of taperfct for case 'ac02'
2966    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2967    
2968    checkpoint47i_post
2969    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2970    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2971      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2972    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2973    o gmredi: fix few bugs.
2974    
2975    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2976    This will be a good checkpoint to plug into the ecco-branch.
2977    o few modif.'s to get latest version adjointed
2978      (mainly kick out code in ini_linear_phisurf)
2979    o modif's to run adjoint with exactConserv
2980    o case GM_BOLUS_ADVEC should be cleaned
2981      S/R gmredi_slope_psi should be cleaned
2982    o verification/carbon now has exactConserv=.TRUE.
2983    
2984    checkpoint47g_post
2985    o time-average AIM output: becomes independent from statvars time-average
2986      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2987    o After TAF bug fix:
2988      Tested adjoint of gmredi package.
2989      Tests were done with checkpoint47 rather than with latest
2990      checkpoint47f_post since the latter is broken for the adjoint
2991      verification/carbon/ contains both ADM and TLM gradient checks.
2992    Here they are, before they get changed/lost/stolen.
2993    Mostly modif.'s to fix numerical sensitivities.
2994    Gradient checks OK for
2995    - GM_taper_scheme:
2996      * clipping
2997      * ac02
2998      * linear
2999      * glw91
3000      * dm95
3001      * ldd97
3002    - GMREDI_OPTIONS:
3003      * GM_VISBECK_VARIABLE_K
3004      * GM_NON_UNITY_DIAGONAL
3005      * GM_EXTRA_DIAGONAL
3006      * GM_BOLUS_ADVEC
3007    in conjunction with data.gmredi parameters to be checked in
3008    in a few minutes under verification/carbon/code/
3009    
3010    checkpoint47f_post
3011    Merging from release1_p10:
3012    o modifications for using pkg/exf with pkg/seaice
3013      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
3014        and SEAICE_EXTERNAL_FLUXES
3015      - pkg/exf CPP options EXF_READ_EVAP and
3016        EXF_NO_BULK_COMPUTATIONS
3017      - usage examples are Experiments 8 and 9 in
3018        verification/lab_sea/README
3019      - verification/lab_sea default experiment now uses
3020        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
3021    
3022    checkpoint47e_post
3023    o created a tag prior to creating a branch
3024    
3025    checkpoint47d_post
3026    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
3027      at the bottom boundary had an erroneous half slip boundary condition
3028    o added bottom drag and no slip boundary condition capabilities to
3029      oceanic pressure coordinates code
3030    o added new verification experiment global_ocean_pressure, this experiment is
3031      also described in the tutorial section of the manual
3032    checkpoint47d_pre
3033    
3034    checkpoint47c_post
3035    o Added a verification experiment for a global cubed-sphere ocean run
3036      -  verification/global_ocean.cubed32x32x30
3037      -  uses pkg/therm_seaice and pkg/bulk_forcing
3038    
3039    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
3040    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
3041      when using P-coordinate; only implemented for atmospheric config.
3042    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
3043      NOTES: requires option NONLIN_FRSURF to be "#define".
3044    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3045    
3046    checkpoint47b_post
3047    Merging from release1_p9:
3048    o pkg/seaice
3049      - removed GOTO's and added taf directives
3050      - double precision constants to reduce the g77 (Linux)
3051        to F77 (SGI) differences reported in release1_p8
3052    o tools/genmake
3053      - added SGI options
3054    o verification/testscript
3055      - updated to that of checkpoint47a_post
3056    o verification/global_ocean.90x40x15/input/eedata
3057      - modified for SGI f77 compatibility
3058    o verification/lab_sea
3059      - added description of sea-ice model
3060      - added missing matlab routines
3061      - added test of thermodynamics parallelization
3062    
3063    checkpoint47a_post
3064    o new pkg: aim_v23
3065     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3066       for now, keep the same surface forcing as before.
3067     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3068     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3069     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3070    o add diagnostic of surface correction term in monitor output
3071    
3072    o bulk_force and therm_seaice
3073    - Two packages:  bulk_force (Bulk forcing)
3074      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3075    - Earlier integration from Stephaine Dutkiewicz
3076      and Patrick Heimbach.
3077    - Two ifdef statements for compile time,
3078       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3079    
3080    checkpoint47
3081    differentiable version of checkpoint46n_post
3082    o bug fix in quasihydrostaticterms
3083    o * "clean" adjoint code (in terms of extensive recomputations)
3084        can now be obtained for all GMREDI options (i.e. for
3085        - GM_VISBECK_VARIABLE_K
3086        - GM_NON_UNITY_DIAGONAL
3087        - GM_EXTRA_DIAGONAL
3088        - GM_BOLUS_ADVEC )
3089      * However, wrong gradient check problem remains unsolved.
3090      * New CPP options have been introduced for different
3091        tapering schemes
3092    o external_fields_load now part of differentiation list
3093    o pressure needs multiple storing;
3094      would be nice to have store_pressure at beginning or
3095      end of forward_step, e.g. by having phiHyd global (5-dim.)
3096      (NB: pressure is needed for certain cases in find_rho,
3097      which is also invoked through convective_adjustment).
3098    o recomputations in find_rho for cases
3099     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3100    o #define ATMOSPHERIC_LOADING should be differentiable
3101    o ini_forcing shifted to begining of initialise_varia
3102    o Incorporating QNVS line search routines into MITgcm
3103      (this is separate code, and therefore not under pkg)
3104      lsopt/, optim/
3105    o Updated verification/carbon/
3106      - #define GM_VISBECK_VARIABLE_K
3107      - GM_taper_scheme    = 'ldd97'    
3108    
3109    checkpoint46n_post
3110    Merging from release1_p8:
3111    o verification/natl_box:
3112      updating new external_fields_load routine
3113    o New package: pkg/seaice
3114      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3115      The sea-ice code is based on Hibler (1979-1980).
3116      Two sea-ice dynamic solvers, ADI and LSR, are included.
3117      In addition to computing prognostic sea-ice variables and diagnosing
3118      the forcing/external data fields that drive the ocean model,
3119      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3120      The implied surface heat flux is then stored in variable
3121      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3122      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3123      non-local transport term.  Because this call precedes model
3124      thermodynamics, temperature under sea-ice may not be "exactly" at
3125      the freezing point by the time theta is dumped or time-averaged.
3126      N.B.: fairly large differences in accuracy occur across
3127            different platforms/compilers; comparison between
3128            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3129            generated output gives:
3130       T           S           U           V
3131      C D M    c        m  s        m  s        m  s        m  s
3132      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3133      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3134      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3135    
3136      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3137    o GAD:
3138      - generated new common blocks to account for call of
3139        same gad routines with differing traceridentities
3140        (needed to modify tracerIdentity indices in GAD.h)
3141      - generated separate common blocks for case useCubedSphereExchange
3142        (Department of Futurology)
3143      - parameter lists to gmredi_?transport: added tracerIdentity
3144      - added new key indices to tamc.h
3145    o external_fields_load:
3146      - added this routine to TAF list
3147      - needed to make some common blocks global and additional storing
3148        along the same lines as exf package (checkpoint_lev?_directives.h)
3149    o exf:
3150      updated external forcing package
3151      - bug fixes carried over from ecco-branch
3152        (missing OBCS_OPTIONS.h in two routines)
3153      - enable easy to use "no forcing".
3154      - added exf I/O for atmospheric loading
3155      - added exf I/O for runoff data
3156      - transfered scaling between exf <-> MITgcm to exf namelist
3157    o Adding new verification experiment global_with_exf.
3158      This verification experiment is almost identical to the
3159      global_ocean.90x40x15 experiment, except that it uses
3160      the exf (and cal) package instead of the
3161      external_fields_load routine (cf README file).
3162    
3163    checkpoint46m_post
3164    o modified testscript to return -- when there are no lines of "%MON" output
3165    o added new flag "quasiHydrostatic" for QH mode
3166      and new routine quasihydrostaticterms()
3167    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3168      New routine: mom_u_coriolis_nh()
3169    o fixed sign of non-hydrostatic metric terms in u and v equations.
3170      Depend on correct sign of gravitySign.
3171    o added work.pc* to .cvsignore in aim directories using ifc
3172    o introduced flag for controllin non-hydrostatic metric terms
3173    o removed gravitySign from PARM04
3174    o switched to g77/ifc from pgf77 in aim experiments
3175    
3176    checkpoint46l_post
3177    o made convective adjustment work with pressure coordinates:
3178     - changed the direction of k-loop in convective_adjustment.F for the
3179       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3180     - adjusted the reference pressure k-index in convective_adjustment.F
3181     - adjusted the convection condition in convect.F (in analogy to
3182       calc_ivdc.F)
3183     - convective_adjustment no longer computes anything on the halos
3184     - removed the warnings about negative salinity from find_rho.F and
3185       find_alpha.F; instead the new routine look_for_neg_salinity, called
3186       at the beginning of find_rho, find_alpha, and find_beta, does a
3187       check of the entire slice, if CPP-option
3188       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3189    checkpoint46l_pre
3190    
3191    checkpoint46k_post
3192    o fixed the verification/global_ocean.90x40x15 experiment:
3193     - new bathymetry (the world according to A., JMC, and M.)
3194     - new initial fields and forcing fields (*.bin files)
3195     - new POLY3.COEFFS (for the next release one should switch to a full
3196       equation of state: JMD95P or MDJWF)
3197     - fixed several errors and redundancies in the data file
3198     - experiment uses looped cells
3199     - added matlab directory with diagnostic scripts for plotting of output
3200    
3201    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3202     - read AIM physics parameters from a file (data.aimphys)
3203     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3204    
3205    checkpoint46j_post
3206    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3207    o move wVel computation at the end of the time step, in S/R integr_continuity
3208    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3209    o update timeave pkg for wVel diagnostic.
3210    checkpoint46j_pre
3211    
3212    checkpoint46i_post
3213    o Clean up AIM package (and keep the results unchanged):
3214      include CPP_OPTION and use IMPLICT NONE in all routines ;
3215      declare all the variables _RL ; use _d 0 for all numerical constants.
3216      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3217    
3218    checkpoint46h_post
3219    o cleaned up the use of rhoNil and rhoConst.
3220      - rhoNil should only appear in the LINEAR equation of state, everywhere
3221        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3222        and the dynamical equations are all divided by rhoConst
3223    o introduced new parameter rhoConstFresh, a reference density of fresh
3224      water, to remove the fresh water flux's dependence on rhoNil. The default
3225      value is 999.8 kg/m^3
3226    o cleanup up external_forcing.F and external_forcing_surf.F
3227      - can now be used by both OCEANIC and OCEANICP
3228    checkpoint46h_pre
3229    
3230     Added code to convert surface volume flux (fresh water) into
3231     a mass flux when using P coordinates in the ocean (OCEANICP).
3232     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3233    
3234    checkpoint46g_post
3235    o Include a new diagnostic variable phiHydLow for the ocean model
3236      - in z-coordinates, it is the bottom pressure anomaly
3237      - in p-coordinates, it is the sea surface elevation
3238      - in both cases, these variable have global drift, reflecting the mass
3239        drift in z-coordinates and the volume drift in p-coordinates
3240      - included time averaging for phiHydLow, be aware of the drift!
3241    o depth-dependent computation of Bo_surf for pressure coordinates
3242      in the ocean (buoyancyRelation='OCEANICP')
3243      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3244        Theta, Salinity, and Pressure in the parameter list. This routine is
3245        presently contained in find_rho.F. This routine does not give the
3246        correct density for 'POLY3', which would be a z-dependent reference
3247        density.
3248    o cleaned up find_rho
3249      - removed obsolete 'eqn' from the parameter list.
3250    o added two new verification experiments: gop and goz
3251      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3252    checkpoint46g_pre
3253    
3254    checkpoint46f_post
3255    o Enable tangent linear (forward mode) gradient checks:
3256      - extended active file handling to g_... files
3257      - added TANGENT_SIMULATION to theSimulationMode
3258      - extended grdchk package accordingly
3259    o added tangent linear setup in verification/carbon/code_ftl
3260    o added adjoint setup in verification/front_relax/code_ad
3261    
3262    checkpoint46e_post
3263    o Added new equation of state -> MDJWF
3264      - EOS of McDougall et al., 2002, JAOT, submitted
3265      - caveat: the equation of state is only valid for a smaller (more
3266        realistic?) range of values than JMD95P/Z and UNESCO
3267      - added masks to the calculation of pressure in store_pressure
3268      - added more check values for density in check_eos (ini_eos.F), some of
3269        the old check values are out of the range of the MDJWF-eos, so don't
3270        expect perfect matches for those
3271    checkpoint46e_pre
3272    
3273    checkpoint46d_post
3274    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3275      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3276      case of pressure coordinates. eosType='JMD95Z' in
3277      combination with buoyancyRelation='OCEANICP' now causes an error.
3278    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3279      in find_alpha/beta.
3280    checkpoint46d_pre
3281    
3282    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3283      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3284    
3285    checkpoint46c_post
3286    o Changes necessary for ocean in p-coordinates
3287     -  Added new buoyancy relation = 'OCEANICP'
3288     -  Added new parameters = gravitySign (this used to be contained inside
3289        the factor dRdZ which I added when we first switched to R coordinates).
3290     X GM/Redi is not compatible (yet)
3291     X bottom drag and no-slip need to be debugged.
3292    checkpoint46c_pre
3293    
3294    checkpoint46b_post
3295    o Added new equation of state -> JMD95Z and JMD95P
3296      - EOS of Jackett and McDougall, 1995, JAOT
3297      - moved all EOS parameters into EOS.h
3298      - new routines ini_eos.F, store_pressure.F
3299    o Added UNESCO EOS, but not recommended because it requires
3300      in-situ temperature (see JMD95)
3301    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3302      unesco.f to be used with POLY3
3303    checkpoint46b_pre
3304    
3305    checkpoint46a_post
3306    o Added (atmospheric) pressure loading
3307      - new field in FFIELDS.h, etc...
3308      - new cpp flag ATMOSPHERIC_LOADING
3309    o Changed hFacC to _hFacC in calc_phi_hyd.F
3310    o Added SHORTWAVE_HEATING to some files for consistency
3311    checkpoint46a_pre
3312    
3313    checkpoint46
3314    further merges from release1_p5
3315    o new ctrl package
3316      - adopted from ECCO environment to enable optimization
3317      - added Eliassen Palm fluxes to controls
3318    o added Eliassen Palm flux controls to gradient check package
3319    o cost package
3320      - Compatible with new ctrl package
3321      - added Eliassen Palm cost hooks
3322      - modif's of existing cost functions
3323    o Adjoint-related bug fixes in kpp:
3324      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3325      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3326    o autodiff package
3327      - flow directives:
3328        + new for S/R do_the_model_io
3329        + enhanced for S/R checkpoint
3330        + new gmredi.flow
3331      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3332        disable adcommon.h/g_common.h by default.
3333      - fixed problem for adjoint of global_max
3334    o modified verification/carbon/
3335    o New setup for adjoint of global_ocean
3336    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3337    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3338    o incorporated hooks for sponge layer code (external_forcing.F)
3339    
3340    checkpoint45d_post
3341    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3342  o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S  o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3343    (affects plume_on_slope "cg2d" output)    (affects plume_on_slope "cg2d" output)
3344    o add new parameter deltaTfreesurf for free-surface time stepping
3345    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3346  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3347  o change phiMin in exp1 (to agree with documentation)  o change phiMin in exp1 (to agree with documentation)
3348  o add new flags:  o add new flags:

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