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revision 1.26 by adcroft, Mon Apr 10 14:41:52 2000 UTC revision 1.982 by mlosch, Fri Apr 25 12:14:35 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: change default to OBCSfixTopo = .true.,
8      set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
9    o implementation of TAF directives for gchem,cfc,dic
10    o remove "exp5" (replaced by tutorial_deep_convection).
11    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
12      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
13      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
14      --> changes results in exp4, seaice_obcs
15    o tutorial_deep_convection :
16      update the set-up and increase resolution and domain size ; start
17      from pseudo initial conditions = output at t=120mn in order to see
18      something happening when running testreport.
19    o pkg/seaice: add os7mp as an advection scheme
20                  add check for advection schemes
21                  add a flag for restoring T and S underneath sea ice
22    o pkg/my82: add netcdf-support and diagnostics
23    o thsice pkg:
24      - Now hsMax limits snow height by turning it into ice following
25        flooding scheme (and now conserving energy)
26      - Slight rewriting of the formula in thsice_calc_thick.F
27      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
28      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
29    
30    checkpoint59p
31    o gchem / dic / cfc :
32      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
33      - add new parameter files: "data.dic" & "data.cfc" ;
34      - various re-arrangement in initialisation & header file ;
35      - fix tutorial_global_oce_biogeo for multi-threaded test.
36    o pkg/dic: test for "pickup_dic" file when restarting ;
37      if no pickup-file, can restart with a re-initialised pH (same as it did
38      before) providing pickupStrictlyMatch is set to False.
39    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
40      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
41    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
42      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
43    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
44     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
45       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
46    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
47       scheme to use for vorticty-term ;
48     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
49       (with default selectVortScheme, return to original discretisation)
50     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
51    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
52    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
53      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
54      also fix diagnostics VISCAHW & VISCA4W.
55    
56    checkpoint59o
57    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
58    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
59      move a few statemens out the main loop into separate loops
60    o pkg/shelfice:
61      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
62        (kg/m^2/s), does not break tests, because in verification/isomip,
63        rhoConstFresh=rhoConst (by accident)
64      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
65      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
66        new file model/src/seawater.F, so that they are available for all pkgs.
67      - convert potential temperature into in-situ temperature. This changes the
68        isomip tests => update tests
69    o add a flag writePickupAtEnd (default=true) to be able to suppress
70      writing a pickup at the last timestep
71    o tools/mpack-1.6 :
72      - disable automake (not working) and autoconf (not needed).
73      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
74        also cleaner with much less compilation warnings.
75    o pkg/profiles:
76      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
77      (for "less than 32 characters name" compiler requirement)
78    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
79      conditions that have a different sampling frequency than S/T/U/V obcs
80    o pkg/diagnostics (stats-diags):
81      - fix global Min/Max in case 1 processor get only empty tiles
82    o genmake2: replace (4 times)
83         make genmake_tc_1.o >> genmake_warnings 2>&1
84      with
85         COMM="$CC $CFLAGS -c genmake_tc_1.c"
86         echo $COMM >> genmake_warnings
87         $COMM >> genmake_warnings 2>&1
88      to make genmake2 always see the value of CC as specified in the optfile.
89    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
90      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
91      - modify verification advect_cs test to test SOM-advection on CS-grid.
92    o pkg/ctrl:
93      - Rewrite of ctrl_map_ini_ecco.F,
94        introducing a generic routine (ctrl_map_ini_gen.F).
95      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
96    
97    checkpoint59n
98    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
99      number in dedicate array "hdiag":
100      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
101        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
102      - many small changes (integer format) for large number of diagnostics
103      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
104        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
105    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
106      usingSphericalGrid, this allows to define the rotated grid coordinates
107      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
108      geographical coordinates according to the inverse of the rotation defined
109      by the Euler angles, so that Coriolis parameter and online-interpolation by
110      exf works with the geographical coordinates on XC/YC/XG/YG.
111      Naturally, this feature does not work with all packages, so some
112      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
113      profiles), because there the coordinates are assumed to be regular
114      spherical grid coordinates.
115    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
116      - introduce isopycnal diffusion coefficient control.
117    o tools/adjoint_options:
118      - additional control vector components.
119    o pkg/mnc: have mnc create marginally meaning full coordinate variables
120      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
121    o pkg/mypackage:
122      - add example of read/write pickup for state-var ;
123      - add entry points to the main code for state-vars diags & write-pickup.
124    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
125      transitions for useExfYearlyFields
126      - add new subroutine that determines the file to read from for
127        use*YearlyFields = .TRUE. and .FALSE.
128      - add a verification experiment to global_with_exf that tests
129        useExfYearlyFields with USE_EXF_INTERPOLATION defined
130    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
131      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
132      subroutines (which could be generated from a template, because they are
133      almost identical), for now they are included in obcs_prescribe_read.F for
134      simplicity
135    o pkg/exf:
136      - add a little more diagnostic to exf_interp_read (in analogy to
137        mds_read_field, can be turned off with debugLevel < debugLevA=1)
138      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
139        ugly but fast by unrolling short inner loops, inserting a unroll=8
140        directive in routine lagran, and splitting a loop and making do while the
141        outermost loop (the latter requires the intoduction of index arrays)
142    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
143    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
144      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
145    o verification/seaice_obcs: updated for restart test and latest options
146    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
147      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
148      for now this is only available for the C-grid code and also within
149      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
150    
151    checkpoint59m
152    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
153      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
154    o gad_som : fix flux output (& diagnostics) to have same units as other  
155      advection scheme fluxes (was previously multiplied by deltaT).  
156    o added verification/seaice_obcs both to test seaice open boundaries
157      and to provide an example matlab scrpt for generating them
158    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
159    o pkg/salt_plume: clean up salt_plume_frac.F to
160      remove redundancy in PlumeMethod 1 and 4
161    o pkg/kpp: added saltplume diagnostics
162    o pkg/obcs and pkg/seaice:
163      - do not set uice and vice to zero when OB*icefile are unspecified
164      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
165      - moved seaice tracer obcs after call to seaice_growth
166    o pkg/salt_plume: added various options for salt plume depth
167      criterion and for vertical distribution of the salt
168    
169    checkpoint59l
170    o pkg/ptracers: new version of ptracers pickup:
171      read meta file and write only fields which are needed to restart.
172      ( same logic as main pickup file ; also using pickupStrictlyMatch )
173    o pkg/seaice:
174      - add timescale for melting due to warm mixed layer as a means of
175        setting SEAICE_availHeatFrac more conveniently
176      - add a CPP-flag/runtime parameter check for flooding algorithm
177      - reformulated availHeat in seaice_growth.F to be independent of AREA
178    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
179      unit changes
180    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
181    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
182      SX vector computer.
183    o pkg/seaice:
184      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
185        seaice forcing fields can now be read only through pkg/exf
186      - removed some unused halos
187    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
188    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
189      or U/VICE from U/VWIND before computing U/VSTRESS
190    
191    checkpoint59k
192    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
193      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
194    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
195      all experiments pass when compile with un-initialised var. checking option.
196    o added pkg/salt_plume
197    o script to test restart (for now, in MITgcm_contrib/jmc_script)
198    o pkg/seaice: new read/write pickup version.
199      read meta file and write only fields which are needed to restart.
200      ( same logic as main pickup file ; also using pickupStrictlyMatch )
201    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
202    o lab_sea.hb87: modify the domain & update output.hb87.txt :
203      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
204      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
205      process. Fixed here by closing the domain at the Northern boundary.
206    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
207    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
208      a set of consecutive levels in/from a 3-D array.
209    o pkg/ptracers:
210      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
211      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
212    
213    checkpoint59j
214    o in pkgs: dic, obcs, offline, rbcs:
215      standard way to compute coeff. for time interpolation between 2 time reccords
216      which retains full precision (& make results less dependent on compiler).
217      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
218    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
219      packages instead of reading ice cover and wind speed separately
220    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
221     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
222      to allow to compile customized code before the update)
223    o cleaning-up:
224      - fix CPP instruction syntax in pkg/obcs
225      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
226        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
227      - fix some threads issue in IO parts.
228    o pkg/dic:
229      - add tons of "_d 0" (--> much better testreports !)
230       and then update outputs of tutorial_global_oce_biogeo
231    o pkg/mom_fluxform:
232      add a special version of momentum advection intended to conserve momentum
233      next to a bathymetry step or a coastline edge. (default = off = #undef)
234    o new read/write pickup version:
235      - for now, only implemented for main (mdsio) pickup file.
236      - write out only what is needed to restart; merge pickup_nh , pickup_ph
237        and main pickup together.
238      - read meta file; read only what is needed to restart; stop if a field
239        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
240        if it make sense (even if the restart is not perfect).
241      - if no meta file, assume that pickup to read corresponds exactly to
242        a pickup that would currently be written.
243      - read pickup written in the old format (until checkpoint59i) if it
244        recognizes an old meta file (no field-list).
245      - add a meta file in exp. which starts from a pickup: 2 cases:
246        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
247         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
248        b) a meta file describing the content of the associated pickup file
249         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
250    o pkg/mdsio & pkg/rw:
251      - new routine to read a meta file ; new set of routine to read
252        Multiple-fields file (with meta file).
253    o added open boundary conditions capability for seaice
254        HSNOW, HSALT, UICE, and VICE
255    
256    checkpoint59i
257    o adjoint:
258      * fix multiDimAdvection adjoint
259        (partial recomputation problem by TAF for fVerT(:,:,kDown)
260        and comlev1 size definition (maxpass vs. max. number of tracers)
261      * verification/global_ocean.90x45x15 adjoint now tests
262        NLFS and multiDimAdvection using DST3 (=30)
263      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
264    o pkg/kpp: add "_d 0" to real constant (if missing);
265      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
266      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
267    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
268      for internal parameters related to restart process (formerly from PARAMS.h)
269      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
270    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
271      as argument. (only atm2d & obcs write_pickup have not yet been updated)
272    o pkg/monitor:
273      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
274      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
275      - account for deep Atmosphere factor and density factor (anelastic)
276    o added open boundary conditions capability for seaice HEFF and AREA
277    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
278      thermodynamics
279      - requires a little reorganization, which affects the testreport results
280        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
281        so that now the conservative form is tested
282      - add a few comments
283    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
284    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
285    o add new diagnostics to seaice: advective, diffusive fluxes (only for
286      multidim-advection, for scheme 2 they are not filled) and transports,
287      thermodynamic growth rates
288    o change units of EmPmR (inside the code, + within coupling interface)
289      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
290      Affects results @ truncation level (cg2d match) and update output of
291       experiments: lab_sea(6), global_ocean.90x40x15(10),
292      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
293      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
294      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
295      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
296    
297    checkpoint59h
298    o pkg/exf:
299      - improve vectorization by moving if-statement out of loops in
300        exf_mapfields, exf_radiation
301      - exf_bulkformulae.F: introduce 2D fields and vectorize code
302    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
303    o testreport:
304      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
305        monitor & update offline_exf_seaice exp. output.
306      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
307    o pkg/seaice:
308      - bug fix in the evp solver: boundary conditions were affected be
309        masking of zMax/zMin (changes results)
310      - minor bug fix in boundary conditions in seaice_calc_strainrates
311        (changes results for no_slip)
312      - seaice_lsr.F: make interpolation of eta dependent on boundaries
313      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
314      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
315        stress formulation and no-slip boundary conditions
316    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
317      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
318    o pkg/seaice: a first HSALT time stepping equation has been checked in
319    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
320      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
321      without requiring DO-IF statements
322    o pkg/thsice:
323      use continuous power-law function for partition of energy between lateral
324      melting/freezing and thinning/thickening ; old code using step function
325      still available with #undef THSICE_FRACEN_POWERLAW
326      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
327    o testreport: change AD testing : check against results/output_adm.txt
328      using same scripts as for forward test.
329    
330    checkpoint59g
331    o adjoint testing: in preparation for changing testreport:
332      - output format: cost and grad written on separated lines
333      - ad output results in directory "results" (instead of "results_ad")
334    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
335    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
336    o pkg/ecco: allow user defined cost function contributions
337    o testreport:
338      Allow to choose (per experiment) the list of tested output variables
339       and the main variable (used to issue a pass/FAIL ) ;
340      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
341      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
342      Also modify printing of summary:
343       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
344       b) echo the list of tested variables in the individual summary.txt of
345          each experiment.
346    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
347      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
348      (but still depend on the tile decompostion of the domain).
349    o pkg/seaice: change a discretization detail to make the B-grid code
350      "more symmetric". This change is likely to remove all "ridges/leads" that
351      where quasi-aligned with the grid in B-grid solutions. It may also be
352      the solution to the stress coupling issues with the B-grid.
353    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
354      remove .cvsignore from input dir. (since testreport no longer run here).
355    o pkg/thsice:
356     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
357     - fix reshaping of sea-ice just after advection:
358       melt all the ice only if ice-volume is too small.
359     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
360       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
361     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
362    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
363      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
364    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
365      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
366      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
367      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
368      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
369      -> update output.txt
370    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
371     this affects truncation error: -> update output.txt of exp:
372      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
373      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
374    
375    checkpoint59f
376    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
377    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
378      a bounded range (in forward mode)
379    o pkg/ecco, ctrl, autodiff and mom_common:
380     internal parameter controls, completements of implementations
381    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
382    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
383      (not seem any difference in testing results).
384    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
385       at face corners.
386    o pkg/generic_advdiff:
387     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
388      loop range indices for computing vertical advection tendency
389      and do the calculation in the interior only (no overlap) ;
390      for now, only implemented for SOM advection (to save CPU time).
391     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
392    o exch2 adjoint
393      First set of changes:
394      - add exch2 hand-written adjoint templates
395      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
396        This will require cleanup in pkg/autodiff/*.F
397        (changed routines currently kept separate in verif. code/)
398      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
399        that used to hide exch2 or cubed-sphere specific code
400        (commented via 'cph-exch2')
401    o pkg/seaice
402      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
403    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
404       output of global_ocean.cs32x15.thsice .
405    
406    checkpoint59e
407    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
408      for B-grid vector (not yet tested) and C-grid vector (<- only used
409      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
410    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
411      (#ifdef ALLOW_SALT_PLUME)
412    o gather_2d/scatter_2d: removed halo regions
413    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
414      scheme and the corresponding test case (under front_relax dir). For now,
415      only available with Skew-flux form and not yet tested in realistic set-up.
416      adjoint: store directives updated, but gradient checks deteriorated,
417      so maybe GM/Redi adjoint is now broken.
418    o seaice adjoint
419      * add AREA, HEFF, HSNOW as control variable
420        (should not change lab_sea results)
421      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
422    o pkg/seaice:
423      * added computation of saltFlux in seaice_growth;
424        For time being, sea ice salinity is assumed constant
425        contribution of snow flooding to freshening of sea ice is neglected.
426        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
427        defaults to 0.0 in order to maintain backward compatibility.
428        Typical values for SEAICE_salinity are 4 to 10 g/kg.
429      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
430      * added SEAICE_availHeatFrac, which specifies fraction of surface level
431        heat content used to melt or grow ice
432      * commented out cap of HICE: it helps keep ice thinner
433      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
434      * applied OBCS T/S mask to HEFFM sea ice mask
435    
436    checkpoint59d
437    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
438     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
439     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
440    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
441     and change default value of parameter "GM_Small_Number";
442     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
443       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
444       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
445    o pkg/ecco: cost function when applying pkg/smooth to controls
446    o pkg/ctrl: add forcingPrecond run time parameter
447    o pkg/seaice:
448     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
449     - fix bug in metric terms of u-equation in LSR solver (implicit part),
450       changes verification/lab_sea
451     - rearrange implicit part of u-equation in LSR solver to make it easier to
452       read, understand, and debug. This causes changes at the truncation level.
453     - fix (serious) bug in the boundary conditions (sign error in the implicit
454       part) of the LSR solver. Changes all LSR results.
455     - fixed problem with HSNOW initialization to avoid thick snow when AREA
456       is initilized with small values - does not change lab_sea results.
457     - added HsnowFile initialization capability
458    o pkg/smooth: addition to model/src and pkg/ctrl so allow
459     initialization of pkg/smooth and application to control vector
460    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
461    o dependencies: pkg/profiles requires pkg/cal
462    o pkg/profiles:
463     - added option ALLOW_PROFILES_GENERICGRID
464         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
465         that interpolation information (grid points and coefficients) is provided
466         within the netcdf input files.
467         -> sample matlab scripts can be found in MITgcm_contrib/gael
468         that allow you to prepare netcdf input files.
469     - also modified: cleaner include statements, cleaner error print statements,
470       cleaner stops when error, and more tests of the netcdf input files consistency.
471    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
472    o pkg/seaice:
473     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
474       requires a new routine: seaice_diagnostics_fill.F
475     - make sure that seaice does not move if not forced (pressure replacement
476       method, Hibler and Ip, 1995), changes results
477     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
478     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
479       It is turned off by default (=-1.), because it changes the results.
480     - make it possible to read AREA from a file, too.
481    
482    checkpoint59c
483    o add S/R and diagnostics for oceanic mixed-layer depth
484    o move GMRedi call after all vertical mixing schemes (including KPP)
485    o pkg/thsice:
486     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
487      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
488    o pkg/obcs:
489     - bug fix for balance code
490    o pkg/seaice:
491      - allow values of SEAICE_elasticParm > 1
492      - add new parameter SEAICE_evpTauRelax as an alternative
493        to SEAICE_elasticParm
494      - make lsr boundary conditions free slip (by default), changes result
495      - add code for no slip boundary conditions for lsr
496      - set minimum of zeta to zero (and not 4e8) (changes results)
497      - add a cap on AREA after advecting AREA if seaice_growth is not called
498    o change calculation of Visbeck K:
499      - no longer depend on tapering scheme; instead, compute slope (limited
500        by GM_maxSlope). this is equivalent to what was comuted before with
501        clipping or linear tappering.
502      - fix vertical averaging (wrong by 1/2 level)
503      - leave the old version (but will not be maintained) within
504        #ifdef OLD_VISBECK_CALC / #endif
505      - update output of exp. ideal_2D_oce
506    o change error catch in calc_r_star to improve vectorization
507    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
508      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
509    o adjoint:
510      Re-organized adjoint checkpointing according to Matt Mazloff
511      (but with modifs/completions/cleanups)
512      Storing is now bundled into large arrays to optimized I/O
513      (and second step in cleanup of the_main_loop)
514    
515    checkpoint59b
516    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
517      - export/import (between ocean & coupler) fields needed for ocean DIC.
518    o pkg/seaice:
519      - get rid of three more exchanges seaice_calc_viscosities (required
520        different loop boundaries in seaice_lsr and seaice_ocean_stress)
521      - bug fix in seaice_ocean_stress (update of lab_sea required)
522      - reduce loop boundaries to necessary minimum also in seaice_evp
523      - go back to the old way of computing deltaC/Z as the adjoint likes that
524        better
525    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
526      passive tracer to an Age Tracer) + update output.txt
527    o pkg/exf:
528      - implement A-grid / C-grid selection for wind-stress input files.
529      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
530      for now, in exf_bulk_largeyeager04.F only :
531      - change implementation for case where windspeed + 2. components wind-stress
532        are read-in. AND use rhoConstFresh to convert evap.
533    o pkg/seaice:
534      - use correct EXCH_UV for wind-forcing (on A-grid).
535      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
536        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
537    o pkg/exf:
538      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
539      EXF_INTERPOLATION:
540      - merge global_with_exf/code version of exf_interp_read.F
541        to the main code ;
542      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
543        reading the file ; Important: This options needs to be defined to recover
544        previous code.
545        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
546      - no longer loose real*8 precision along the way when using exf_iprec=64.
547    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
548      - change discretisation of evp-solver in order to avoid another exchange
549        (changes lab_sea) and clean up a little
550      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
551        help the adjoint (this also changes the results slightly)
552      - add a few "_d 0" where they had been missing in seaice_evp.F
553      - cleaning up: remove unused seaice_calc_rhs.F
554    o pkg/exf: some cleaning-up:
555      - change various "constants" into runtime parameters
556      - cleaned-up Large&Yeager04 routine which should eventually
557        replace exf_bulkformulae.F (changed names of S/R and CPP)
558        and merged various ALLOW_ATM_WIND options
559     only used with thsice pkg (in thsice_get_exf.F):
560      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
561        which are used when useStabilityFct_overIce=TRUE (= the default)
562      - change default values of ice & snow emissivity and scale downward LW
563        by ice & snow emissivity.
564    o pkg/thsice:
565     fix few little problems, in thsice_calc_thickn.F:
566      - growth vertically (and not laterally) if iceFrac == iceMaskMax
567      - melt only laterally if hIce < hThinIce (as the comments say)
568      and in thsice_extend.F:
569      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
570      - start to form ice as soon as the minimum ice-volume is reachable.
571     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
572      and cpl_aim+ocn
573    o pkg/kpp
574     - move computation of surface related input fields to KPP into a new
575       subroutine kpp_forcing_surf.F
576     - remove wrong (within bi,bj loops) EXCH calls.
577     - little cleaning (add argument myThid in last position, cvs header ...)
578     - for now, fix conservation problem by exchanging KPPviscAz (may not
579       be the best fix)
580    o pkg/seaice
581     - check for inconsistent evp parameter/cpp-flag combination
582     - remove leftover errIO flat for obsolete name list error handling
583    o OpenAD
584     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
585    
586    checkpoint59a
587    o pkg/seaice: some parameter clarifications and a little bit of clean up
588    o pkg/thsice: rename run-time parameters:
589       himin       -> hIceMin
590       himin0      -> hThinIce
591       hihig       -> hThickIce
592       i0          -> i0swFrac
593       transCoef   -> bMeltCoef
594       frac_energy -> fracMelting
595      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
596       with default values (for now) that do not change the results.
597      remove old version of thsice vars advection in pkg/seaice.
598    o in FFIELDS.h:
599      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
600      - make pLoad & sIceLoad always available (but still only used if
601         ATMOSPHERIC_LOADING is #define).
602    o pkg/kpp: replaced _KPP_RL with _RL
603    o bug fixes for vertical diffusivity computations when both KPP and
604        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
605        are no longer updating the vertical diffusivity array
606        (passed as argument) but are (re-) setting those arrays.
607    o pkg/seaice: fix bug in evp solver, while doing that
608      - change (improve?) discretization of stress computations for both
609        cgrid-lsr and evp solver
610      - add a new routine to compute strain rates
611      - the above changes lab_sea results
612      - add no slip conditions for evp solver (off by default), lsr-version
613        may follow
614      - fix exchange for shear at Z-points (does not change lab_sea)
615      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
616        (to force the user to pick a time step since there is not "safe" way
617        of choosing it)
618      - add principal stress diagnostics
619      - rearrange fields for evp a little to avoid having to call a: too many
620        exchanges and b: exchanges for stress trensor components which we do
621        not have.
622      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
623        of evp, complete rewrite for lsr case (latter is does not yet work
624        in all cases)
625    o pkg/kpp: add code to have mixing in shelf ice caverns
626      - add myThid to all kpp routines (long overdue)
627    
628    checkpoint59
629    o pkg/exf:
630      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
631        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
632      - move exf header files from lower_case.h to UPPER_CASE.h ;
633        add missing cvs Header & Name
634      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
635      - add namelist param. selectStressGridPosition, exf_monFreq
636      - retire many _CLIM routines, and remove data.exf_clim
637        + params moved to data.exf
638        + climsst, climsss now handled by exf_set_gen, i.e.
639          climss?period=0 refers to constant field,
640          climss?period=-12 to monthly forcing
641      - split up namelists in data.exf
642    o pkg/seaice:
643      - remove seaice_exch and seaice_exch_uv
644      - remove superfluous exchange of theta
645      - add myThid to seaice_budget_ocean/ice
646      - add new interface for atmospheric wind forcing (C-grid only)
647        + new routine
648        + two new field (taux, tauy for stress over ice)
649        + removed one global field (DAIRN) for C-grid case only
650    o pkg/thsise
651      - 2nd set of modifs for thsice adjoint in conjunction with exf
652    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
653    
654    checkpoint58y_post
655    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
656      vertical diffusivity, similar to that in MOM4; turned on using
657      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
658      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
659    o Added capability for 3D specification of background vertical diffusion
660      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
661      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
662      "data" file that contains the 3D vertical diffusivity coefficients.
663    o ice dynamics (pkg/seaice) with thsice thermodynamics:
664      - add code within pkg thsice to advect & diffuse sea-ice fields
665      similar to (and will replace) what has been added in  seaice_advdiff.F,
666      but: - conserving Mass, Heat & Salt.
667           - better when using non-linear advection scheme (not yet fully tested)
668           - can also be used in atmospheric set-up (for now, only the diffusion).
669    
670    checkpoint58x_post
671    o IO option for global-file compact format:
672      - add options when generating topology (utils/exch2/matlab-topology-generator)
673      - add I/O capability (pkg/mdsio).
674      - adapt utils/matlab/rdmds.m to read this format.
675      for now long-line format not yet supported by pkg/mdsio (& exch2).
676    o shelfice: add a few diagnostics
677    
678    checkpoint58w_post
679    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
680      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
681      (and replace horiVertRatio in NH code).
682      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
683                         and tutorial_plume_on_slope (sensitive to truncation)
684    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
685      directly to drive seaice model (C-grid only)
686    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
687     - reintroduce computation of wind from stress,
688     - compute tau (in exf_bulkformulae.F) from windstress averaged to
689       mass points to avoid tau = 0
690     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
691    o rdmnc.m: make it work with "global" files created with gluemnc
692    o rdmnc.m : some improvements in dealing with singleton dimension
693      (tested on all testreport mnc output files).
694    o genmake2: disable pkg/profiles if netcdf test fails.
695    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
696    o move call to cal_readparms up to make calendar parameters/variable available
697      to all packages
698    
699    checkpoint58v_post
700    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
701      useDynP_inEos_Zc tested.
702    o pkg/exf: changes to properly interpolate/mask/scale initial fields
703    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
704      and portions thereof.  See read_cs.txt for description and examples.
705    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
706      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
707      following the great-circle arc between those 2 points.
708    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
709      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
710    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
711     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
712     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
713     - still needs work (not working with some options ; efficiency to improve)
714       and serious testing.
715     - use this scheme for temperature & salinity in 2 advection test exp.:
716       advect_xy & advect_xz, respectively.
717    
718    checkpoint58u_post
719    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
720    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
721    o testreport: add option "-skipdir" to skip some test.
722    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
723      momentum calculation.
724    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
725    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
726      remove checkpoint.F and the_correction_step.F (no longer used);
727      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
728    o add option (linFSConserveTr) to correct for tracer source/sink due to
729      Linear Free surface
730    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
731    o pkg/thsice: fix reading mnc-pickups
732    
733    checkpoint58t_post
734    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
735    o pkg/mdsio:
736     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
737       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
738       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
739     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
740     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
741       either MDS_READ_FIELD or MDS_WRITE_FIELD )
742     - new S/R (to replace MDSWRITEMETA), which allows to write more
743       informations (variable names, time ...) to meta files.
744     - modify rdmds.m to give back the meta file content.
745    o pkg/diagnostics: change vertical interpolation to be safer, and more
746       flexible (define p-levels to interpolate to in data.diagnostics);
747      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
748       diagnostic pointer.
749    o pkg/seaice: more cleaning up of seaice_growth, added many comments
750    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
751    o fix multi-category seaice:
752     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
753       SEAICE_MULTICATEGORY
754     - fix short wave heat flux
755    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
756       and allow to use EVP solver. Change forward lab_sea: test both EVP
757       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
758    o Initial check-in of lab_sea adjoint
759      (very similar to natl_box_adjoint/code_seaice)
760      * used C-grid and EVP solver
761      * used KPP, GM/Redi
762      * uses inAdExact=.TRUE.
763      * gradient checks fail for both ADM and TLM
764        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
765        f.d. gradients actually seem more problematic than ADM, TLM gradients;
766        issue is related to forward mismatch between g77 an ifort
767    o pkg/seaice: overhaul of thermodynamics
768     - growth.F and groatb.F are replaced by new routine seaice_growth.F
769     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
770     - move a few global fields out of SEAICE.h into seaice_growth.F and
771       make them 2D (FICE/QNETO/ ...)
772     - remove FO (it is the same as QNETO)
773     - introduce a few local fields to avoid modifying external fields such
774       as atemp, etc.
775    
776    checkpoint58s_post
777    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
778      changed exf_set_gen.F so that
779        genperiod=0 means input file is one time-constant field and
780        genperiod=-12 means input file contains 12 monthly means
781    o CG2D: use pre-computed solver main-diagonal (stored in common block);
782      this affects truncation error ; generate new output file for exp. which
783      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
784        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
785        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
786        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
787        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
788        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
789    o start implementation of deep-atmosphere and anelastic formulation
790    o verification: remove 2nd copy of input files and use script "prepare_run"
791      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
792    o mom_common/vecinv/fluxform: fix a few initialisation isssues
793    o profiles: fix for multithreaded case
794    
795    o diagnostics: rename few diags:
796      s/'PRESSURE'/'RCENTER '/g
797      s/'TICE    '/'oceFreez'/g
798      s/'TAUX    '/'oceTAUX '/g
799      s/'TAUY    '/'oceTAUY '/g
800      s/'SWFLUX  '/'oceQsw  '/g
801      s/DIFx/DFxE/g
802      s/DIFy/DFyE/g
803      and add few ocean-forcing diagnostics:
804      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
805    o modifications to pkg/seaice/growth.F and budget.F, which change results of
806      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
807      as actual snow thickness.  It now refers everywhere to effective snow
808      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
809    
810    checkpoint58r_post
811    o modifications to pkg/seaice/growth.F, which change results of
812      lab_sea experiment: fixes pertain to melting snow over open water, to
813      masking EVAP under sea ice, and to using the correct AREA variable for
814      computations of EVAP, PRECIP, HSNOW, and GHEFF
815    o add ability to read bathy, salt, and theta using MNC (off by def)
816    o add flooding algorithm and advection of HSNOW for pkg/seaice;
817      both are turned off by default and do no change any results
818    o seaice advection with pkg/thsice: a step toward the use of non-linear
819      advection scheme, but #ifdef or commented out for now (requires more EXCH).
820    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
821      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
822      in natl_box (affects results @ truncation level: update output.txt)
823    o multi-threading and IO:
824      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
825      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
826        (needed to work with SingleCpuIO): tested in all verif. exp.
827    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
828      affects the results (but none of the verification test uses this scheme).
829    o Adding some pkg/diagnostics capability to pkg/seaice
830      (will certainly be subject to changes)
831    o ctrl: adding new control variables:
832      lwflux, lwdown, evap, snowprecip, apressure, runoff
833    
834    checkpoint58q_post
835    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
836      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
837      high_res_cube configuration by 4% on Columbia.
838    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
839      add (in global_with_exf/code) a version of EXF_INTERP_READ without
840      dynamical allocation (seems to work in multi-threaded).
841    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
842      single CPU io) so that TAF does not have to see EESUPPORT.h
843    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
844    
845    checkpoint58p_post
846    o obcs: stop if obcs is used with useCDscheme = .true.
847    o shelfice:
848     - fix a sign error so that no slip at shelfice interface works
849     - remove stop for combination non-hydrostatic code and shelfice. That does
850       not mean, that the results are correct, but at least they are numerically
851       stable
852    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
853    o added adjoint exch routined for all exch*3d* routines
854      and updated flow directives
855    
856    checkpoint58o_post
857    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
858      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
859    o change controling S/R for writing pickup file (new S/R do_write_pickup)
860      and clean-up reading/writing of pickup files.
861    o fix local version of read/write pickup (NH part) in rotating_tank/code
862    o simplify EXCH interface:
863     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
864     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
865    o added the regrid package
866    o shelfice:
867     - add a simple boundary layer scheme to reduce noise
868     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
869    
870    checkpoint58n_post
871    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
872       local variable (not in common block).
873    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
874      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
875      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
876        to work with SingleCpuIO.
877    o add "_d 0" to real constant of pkg/cfc subroutines ;
878       update exp. cfc_exemple & tutorial_cfc_offline output files.
879    o multi-threading and IO:
880      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
881        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
882      - barrier before and after reading.
883      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
884      - avoid using MDS_WRITELOCAL for LAND pkg output.
885      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
886        common-block variables ; Allows multi-threading with master-thread IO.
887    o change default MAX_NO_THREADS from 32 to 4 ;
888      and stop cleanly when MAX_NO_THREADS is too small.
889    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
890    
891    checkpoint58m_post
892    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
893       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
894    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
895       keep global_ocean.90x40x15 (for AD testing) with former secondary test
896       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
897    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
898        add MITgcm_tutorials (= code + all the tutorials)
899    o ecco, option to compute cost for total ssh (mean+anom)
900    o consistent with addition of ptracer and ssh in pkg/profiles
901    o profiles: adding ptracer and ssh
902    o testreport: change multi-test output-file name
903      (from output.txt.{name} to output.{name}.txt)
904    o profiles: now ok for mutli-tiles case
905    o seaice: add 4 parameters for different advection schemes for area,
906      (effective) seaice thickness, enthalphy, and snow height. Their default
907      is the standard parameter SEAICEadvScheme
908    o calc_gw:
909     - add cosFacU in zonal viscous flux (harmonic.visc.).
910     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
911       of tutorial_plume_on_slope.
912    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
913    o calc_gw: true flux-form, account for horizontal grid spacing.
914      update rotating_tank results, but not plume_on_slope (affected at
915      truncation level, 11 digits).
916    
917    checkpoint58l_post
918    o calc_gw:
919     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
920     - remove side-drag for now (need to fix it); update plume_on_slope results.
921     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
922    o commit code to make SST/SSS weights spatially variable
923      (based on either variable in-situ or variable initial T/S weights)
924    o pkg/ecco:
925      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
926        now based on horizontally varying weights wthetaLev, wsaltLev
927      * cost_averagesflags now returns year indices in addition to day, month
928      * sflux balance is performed on annual basis
929        (sflxumm, sfluxmm2, bal_sfluxmm)
930      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
931        including separate counting and multipliers
932    o pkg/rbcs
933      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
934    
935    checkpoint58k_post
936    o testreport:
937     - always build in dir. "build" (if not there, mkdir build instead of building
938       & running in input)
939     - run in dir run (if it exists), in build otherwise.
940     - call prepare_run (if input/prepare_run exists)
941     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
942    o pkg/exf modifications to interpolation and rotation routines for more
943       reasonable treatment of North Pole singularity: for tracers North Pole
944       value is set to northernmost zonal-mean value, for zonal velocity it is
945       set to zero, and for meridional velocity it is set to northernmost value.
946    o pkg/exf/exf_check_range.F
947     - add tile index to diagnostics and move stop statement to the very
948       end of the routine.
949    o pkg/diagnostics: (diagnostics_main_init.F)
950      define title of isomorphic variables according to the current config.
951    o pkg/thsice with pkg/seaice dynamics:
952    - fix domain of computation (interior only, required for exf) and do exchanges
953    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
954    o towards a standard way of dealing with multi-threading in MONITOR
955      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
956    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
957       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
958    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
959    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
960    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
961       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
962    o tracer advection:
963     - clean-up and simplify calc_common_factors.F
964     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
965       advection subroutine (but still not used within DST advection S/R)
966    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
967    
968    checkpoint58j_post
969    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
970      from file (collects calls previously in FORWARD_STEP)
971    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
972    o adjoint store dir. adjusted accordingly
973    o genmake2
974      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
975    
976    checkpoint58i_post
977    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
978      on wind stress (SEAICEstressFactor defaults to 1.)
979    o Total number of Timers is finite (<=40): comment out 2 non-essential one
980      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
981    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
982      on CS-grid: no longer loosing mass.
983    o exf & curvilinear-grid: no longer modify longitude xC & xG.
984    o pkg/ggl90: fix sloppy output and fix a bug
985    o pkg/seaice: added SEAICEuseEVPpickup parameter
986      - Set to false in order to start EVP solver with
987        non-EVP pickup files when using SEAICEuseEVP
988      - fix sign error in diffusion in seaice_calc_rhs
989    
990    checkpoint58h_post
991    * Modifications for bottom topography control
992      o replace hFacC by _hFacC at various places
993      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
994      o add non-self-adjoint cg2d_nsa
995      o update autodiff support routines
996      o re-initialise hfac after ctrl_depth_ini
997      o works for 5x5 box, doesnt work for global_ocean.90x40x15
998    * Adding verification for 5x5 box (4-layer) bottom topography control
999    
1000    checkpoint58g_post
1001    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1002       used for mean seasonal cycle, mean diurnal cycle); add an example
1003       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1004    o pkg/ggl90:
1005      - add parameter (minimum surface kinetic energy)
1006      - fix bug (avoiding division by zero)
1007    o couple pkg/thsice to pkg/seaice:
1008      - modify advection in seaice to accomodate new scalar fields to be advected
1009      - only muliDimAdection scheme work with seaice/thsice
1010      - mapping of thsice-variables to seaice-variables, back and forth
1011      - does not break the verification experiments, but does not give the
1012        desired results either
1013    o pkg/seaice
1014      - make (default) second order advection a bit less confusing?
1015    
1016    checkpoint58f_post
1017    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1018      to pkg/seaice):
1019      - new routines thsice_map_exf and thsice_get_exf provide the interface
1020      - add an additional formal parameter to thsice_solve4temp
1021    o pkg/exf:
1022      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1023      - correct Stefan-Boltzmann constant
1024      - new parameter for longwave surface emittance
1025      - separate some stuff from exf_bulkformulae into new routines  
1026        exf_radiation, exf_wind
1027      - add new parameters and constants: longwave emissivity for ocean, ice
1028        and snow, evaporation parameters over ice
1029      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1030        either wind from stress or stress from wind
1031    o pkg/thSIce:
1032    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1033    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1034       and THSICE_CALC_THICKN
1035    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1036    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1037      to make debugging easier.
1038    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1039    o pkg/bulk_force:
1040      - clean-up comments and parameters ;
1041      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1042    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1043      generate new output for test-experiment: aim.5l_cs.thSI
1044    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1045      testreport accordingly
1046    
1047    checkpoint58e_post
1048    o SEAICE_CGRID adjoint done
1049    o R_STAR adjoint implemented.
1050      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1051      * need to sort out init. of h0facc, etc.
1052    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1053      to be able to use it in pure forward.
1054    
1055    checkpoint58d_post
1056    o upgrade simple test-experiment to tutorial example:
1057     step.1: duplicate the experiment and (step.2) will remove the old copy.
1058      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1059      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1060      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1061      tutorial_global_oce_biogeo    <- copy of dic_example
1062      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1063      tutorial_plume_on_slope       <- copy of plume_on_slope
1064      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1065      tutorial_global_oce_optim     <- empty for now (David ?)
1066      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1067     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1068    o correct a sign problem in cost_scat.F
1069    o obcs and ptracers: fix boundary conditions for advections schemes
1070      with larger stencil
1071    o thsice adjoint: start
1072    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1073      completeness
1074    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1075      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1076    o ptracers adjoint:
1077      * avoid extensive recomputatations
1078      * fix missing re-init. of gptr (missed by TAF)
1079    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1080      me to turn off the excessive output to STDOUT that this package produces
1081    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1082      and add those terms in Vector-Invariant formulation.
1083    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1084      if the control period (xx_hfluxperiod etc) is 0
1085    o in profiles pkg, clean routines and fix details
1086    o in ecco pkg, reading ssh data:
1087      fix problem in case the model does not start at iter0=0
1088    o fix mnc-pickup/restart for ptracers
1089    o new package prifiles:
1090      code to compute profile-based cost by Gael Forget
1091      (modifs in ecco, ctrl, autodiff)
1092    o Benign bug fix in initialization (spotted by M. Mazloff) of
1093      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1094    
1095    checkpoint58c_post
1096    o adjoint: finish NLFS adjoint and provide reference output in
1097      verification/global_ocean.90x40x15/results_ad_nlfs
1098    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1099      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1100      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1101      with SEAICE_CGRID defined.
1102    o move calendarDumps from "data" to "data.cal" and clean-up the code
1103      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1104    o add useEXF & useCAL flags (for now, set in hard-coded way)
1105    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1106      (were missing in NH mode, and wrong in quasihydrostatic mode).
1107      waiting for Chris updated version of calc_gw to add those CALLs.
1108    o fix bug in quasihydrostatic S/R ;
1109      add a test for this option: global_ocean.90x40x15.qshyd
1110    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1111      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1112    o add on/off flag useOffLine for package OFFLINE
1113    o seaice:
1114      - modify advection so that it works also on the C-grid
1115      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1116        problem in multi-tile runs with C-grid
1117      - add flags for clipping ice velocities and/or masking solver forcing
1118      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1119        C-grid solver
1120      - added a few comments to seaice_diffusion.F
1121      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1122        are now exclusive)
1123      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1124        required re-ordering the code a little:
1125       + make DAIRN global variable (defined in SEAICE)
1126       + move computation of the viscosities eta and zeta into a new separate
1127         routine (because I need to recompute them in seaice_ocean_stress.F)
1128    
1129    checkpoint58b_post
1130    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1131      update output.txt of exp. aim.5l_cs.thSI
1132    o various mnc cleanups and improvements:
1133      + shrink lookup tables by factor of ~4
1134      + better error reporting when running out of lookup space
1135      + able to handle longer path/file names (up to 500 chars)
1136    o adjoint:
1137      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1138      - TBD: "hidden" mom_vecinv recomp. in dynamics
1139    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1140     (allow to differentiate between forcing components using new integer flags:
1141      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1142     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1143    o ecco
1144      - enable trend removal from SSH anomaly obs.
1145    o adjoint
1146      - a fix for PmEpR when #undef EXACT_CONSERV
1147      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1148      - try to fix "hidden" recomp. in forward_step for NLFS
1149        (NLFS seems broken sometimes after I checked it in)
1150    o seaice:
1151     - add c-grid version of the dynamic solver:
1152       + three new routines that are the c-grid substitute lsr, dynsolver
1153         and ostres
1154       + put a few fields that were local to dynsolver into global common
1155         blocks, so that I can move the computation of stresses etc into
1156         seaice_lsr (saves coding but may break the adjoint).
1157     - replace more hardwired parameters by runtime parameters
1158     - add ice masks that mask the rhs of the implicit solvers where there
1159       is no ice (commented out in seaice_dynsolver, because i am not sure
1160       if this works properly), eventually this should replace the clipping
1161       of ice velocities in seaice_dynsolver to +/-40cm/s.
1162    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1163      include it only where its needed
1164    o move balancing of fluxes before the call of external_forcing_surf
1165    o seaice:
1166      - correct units of turning angles (now they are really in degrees)
1167      - move computation of GWATX/Y out of main routine into dynsolver
1168      - initialize GWATX/Y in seaice_init
1169    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1170      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1171    o seaice: add runtime flags for turning angles (default to zero)
1172    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1173      and trend from exf forcing and ctrl control adjustments
1174    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1175      (since checkpoint57x_post)
1176    o change the default rotation period to 86164.s = the Earth rotation
1177    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1178      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1179    o seaice advection: add code for choosing between the default (2nd order
1180      central differences) and multiDim advection schemes provided by
1181      pkg/generic_advdiff
1182    o seaice:
1183      - removed all references to SEAICE_GRID.h fields from
1184        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1185        (cubed-sphere configuration will change a little)
1186      - grid computations in seaice_init are obsolete now.
1187      - cleaned up code a little so that is easier to read (hopefully).
1188      - added new (better?) discretizations of default advection and diffusion
1189        (turn on with SEAICEuseFluxForm)
1190      - replace 1 in 3d global fields by kSurface in growth.F
1191      
1192    checkpoint58a_post
1193    o seaice:
1194      - bug fix in advect.F
1195    o shelfice:
1196      - separate shelfice load anomaly from pload (breaks with time
1197        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1198        Its default is 0., but it may be computed more cleverly from (unknown)
1199        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1200        done offline. A good approximation of the pressure load anomaly is
1201        necessary to avoid large initial adjustment processes underneath
1202        deep-reaching shelfice.
1203      - small fix in ISOMIP shelfice_thermodynamics
1204      - add more sophisticated thermodynamics of Hellmer (1989), this is
1205        now the default
1206      - give a few constants more intuitive names
1207    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1208      if bulk formulae are used in long integration (especially EmPmR). Turn
1209      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1210      if balancePrintMean, the imbalance that is substracted is printed to
1211      STDOUT.
1212    o fix bug (typo) in obcs_apply_eta.F
1213    o add a new package shelfice which enables us to model the circulation
1214      underneath shelf-ice with draughts of hundreds of meters.
1215     - works
1216     - to do: + include improved thermodynamics
1217              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1218                instead of new field kTopC
1219              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1220                instead of new field R_shelfIce and new code in ini_depth.F
1221                and ini_mask_etc.F?
1222              + adjust vertical mixing schemes?
1223    o seaice pkg:
1224     - add a cpp-flag to include a simple formula for a salinity dependent
1225       freezing point of sea water at the surface
1226     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1227       meridional stresses are now different (and hopefully correct)
1228    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1229       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1230       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1231    o pkg/diagnostics: add options and parameters for regional-statistics
1232       diagnostics ; define regions by reading a region-mask from a file
1233       (might add other options later)
1234    o pkg/bulk_force:
1235     - add option and parameters to use AIM surface-flux formulae.
1236     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1237       others forcing fields (defined in PARM05, parameter file "data") are loaded
1238       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1239     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1240     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1241     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1242       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1243     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1244    
1245    checkpoint58
1246    o add "--embed-source" option to genmake2 which, when the supporting
1247      tools can be compiled (as determined by genmake2) will turn on the
1248      embed_files package which then embeds the entire MITgcm source code
1249      (*.[fFhc] + Makefile) used for the build within the executable
1250      - requested by CNH but off by default
1251      - adds a paltry <9MB to the mitgcmuv executable in most cases
1252      - only writes the output when useEMBEDSRC in eedata is true
1253    o clean up 3-dim. relaxation codes:
1254      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1255      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1256      * Thanks to Tom Haine for testing!
1257    
1258    checkpoint57z_post
1259    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1260      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1261    o fix the pickup behavior for obcs in combination with ptracers
1262    o fix a bug in ptracers_external_fields_load
1263    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1264      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1265    o transfered surface NH pressure to eta field (if exactConserv).
1266    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1267         and update lab_sea output.txt file.
1268    o completing 3-dim. relaxation code: additional term
1269         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1270      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1271      * At compile time, in "EXF_OPTIONS.h" set
1272          #define  ALLOW_CLIMTEMP_RELAXATION
1273          #define  ALLOW_CLIMSALT_RELAXATION
1274      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1275          tauThetaClimRelax3Dim = 15552000.0,
1276          tauSaltClimRelax3Dim  = 15552000.0,
1277      * 3 cases:
1278          1) Use a constant-in-time 3-dim. field
1279          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1280          3) Real-time relax. to time-evolving prescribed field
1281    o Adding Laplacian-type smoothness constraint on
1282      initial and boundary (forcing) controls (ic, bc)
1283      * enable at compile-time via
1284        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1285      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1286      * Absolute scale somewhat unclear so far
1287      * no area weighting was included since no other cost term does so far
1288    
1289    checkpoint57y_post
1290    First step for a NLFS adjoint
1291    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1292    o new init. routines for calc_r_star, calc_surf_dr
1293    o still need to deal with ini_masks_etc
1294    o testreport seemed happy
1295    checkpoint57y_pre
1296    
1297    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1298    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1299    o add new offset feature to offline pkg (plus minor cleanup)
1300    o cfc fixes for final year of integration
1301    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1302      be in GCHEM_OPTIONS).
1303    
1304    checkpoint57x_post
1305    o fix testreport Pb in multiple test experiment.
1306    o cleanup our namelist syntax in verification:
1307      - make it more F95 standards compliant (some work still needed)
1308      - allows the vast majority of our tests to work with gfortran
1309    o Non-Hydrostatic:
1310     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1311     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1312    o Allow to apply AB on T,S rather than on AB(gT,gS):
1313     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1314     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1315       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1316     - need a "clever" read_pickup to restart from the other AB formulation
1317    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1318    o remove some unused variables (reduces number of compiler warnings)
1319    o adjoint
1320      * Disable useVariableViscosity for adjoint for time being
1321        (there are a number of extensive recomputations)
1322      * Initialize certain variables needed for adjoint
1323    
1324    checkpoint57w_post
1325    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1326                 fix the singleCpuIO RS version of MDSWRITEFIELD
1327       and add a WARNING if using globalFiles=T with multi-processors.
1328    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1329      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1330    o tracer advection scheme:
1331      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1332       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1333       was not very convenient).
1334      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1335       (further tests needed for the implicit DST & Flux-Limiter schemes).
1336    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1337      and sRef for convenience, handy, when you want to initialize
1338      ptracers in a large domain with a constant non-zero value. Also,
1339      untangle ptracers_init.F a little.
1340    
1341    checkpoint57v_post
1342    o change dome exp. to use variable viscosity in side-drag terms.
1343    o remove all the files from the cfc_offline test since they are now
1344      incorporated into tutorial_cfc_offline which has been producing
1345      identical results for a few days of testing
1346    o add new parameter: sideDragFactor to enable half-slip-side BC
1347      and change side-drag S/R to use viscosity from mom_calc_visc
1348      (can switch back by setting sideDragFactor=0.); affects results at
1349      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1350       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1351    o vorticity & strain are now computed without masking, to account for
1352      no-slip-side BC in variable viscosity calculation ; mask is applied
1353      anyway later on, before computing advection/coriolis terms.
1354    o modify exp4 to test new obcs support for reading from external files
1355      and for passive tracers
1356    o fix behavior of ptracers_monitor when monitor output is written to a
1357      netcdf-file; still not independent of monitor.F (writes in the same
1358      file).
1359    o change default value of tRef (put a uniform, meaningful value for ocean
1360      & atmos) and initialize sRef (was missing, as Martin mentioned).
1361    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1362      to be proportional to enstrophy dissipation length.  Thus,
1363       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1364      This is now consistent with Smagorinsky and with the manual.
1365    
1366    checkpoint57u_post
1367    o OBCS and PTRACERS: add open boundary support for passive tracers
1368      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1369        OB-values from file; this is not different from the way theta and salinity
1370        are treated
1371      - however, Orlanski-radiation conditions are not supported, and the model
1372        will stop if you use pTracers and Orlanski at the same time.
1373      - beefed up the rountine obcs_external_fields_load: now only those open
1374        boundary values are overwritten with values from files for which there
1375        are really files, otherwise the OB-fields remain untouched. This makes
1376        it possible to use different OBs at different ends of the domain (as
1377        with EXF)
1378    o reduce number of exch calls in shap_filt (s2).
1379    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1380      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1381    
1382    checkpoint57t_post
1383    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1384    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1385      same truncation, independent of the face number: affects affects several
1386      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1387    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1388      note that biharmonic viscosity + no-slip was not tested in any experiment.
1389    o fix bug in non-linear free-surf side-drag ; generate new output for
1390      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1391    o make mnc honor the writeBinaryPrec flag for most kinds of output
1392    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1393    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1394      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1395    o add brackets in multi-terms sum to get same truncation, independent of
1396      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1397      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1398    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1399      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1400      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1401      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1402      Suggested values of viscosity parameters found in mom_calc_visc.
1403      Many new viscosity diagnostics available.
1404    
1405    checkpoint57s_post
1406    o Add clearing-house for viscosity calculations, mom_calc_visc and
1407      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1408      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1409      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1410      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1411      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1412      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1413      ViscAhStrain and viscAhTension are now retired.
1414    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1415    o In response to JMC's bug report, genmake2 now ignores any soft-links
1416      that it finds in the *current* directory when searching for files.
1417      Soft-links found in any other source directories will still work as
1418      they did before.
1419    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1420      a C routine to unlimit the stack size
1421    o mnc-ify pkg/aim snapshot vars
1422    o mnc-ify pkg/land as requested by Daniel
1423    o various changes to mnc including:
1424      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1425      - output can now be grouped so that all files within a group
1426          change the ITER portion of their names in lock-step together
1427      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1428          and works with both EXCH1 and EXCH2 (but needs more testing)
1429      - writing works for all verification test cases w/ g77 on Linux
1430    
1431    checkpoint57r_post
1432    o make MNC variable initialization happen earlier
1433    o add diagnostics for (almost) each term of the momentum Eq.
1434    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1435    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1436    o remove MINIMAL_TAVE_OUTPUT option ;
1437      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1438    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1439      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1440    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1441    o add time-dependent SST, SSS control
1442    o cost terms in ecco/ modularized (new cost_generic.F)
1443    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1444    o new infrastructure for seaice model vs. obs misfits in seaice/
1445      * driver from the_main_loop.F is seaice_cost_driver.F
1446      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1447      * gradient check in Exp. 6a of natl_box_adjoint/
1448    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1449      (see README file)
1450    
1451    checkpoint57q_post
1452    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1453    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1454      - bug was reported by Jean-Michel and Ian Fenty
1455    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1456      update exp. cpl_aim+ocn output.
1457    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1458      Needed for high-res. runs with large global files
1459      to be able to limit tapelev size
1460    o Changed some tests for adjoint:
1461      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1462      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1463      * global_ocean.90x40x15/ back to default 3-level checkpointing
1464    o Modifications to enable scripted COMMON to MODULE conversion
1465      * verification/OpenAD/code/ has necessary scripts and description;
1466      * converts, compiles and runs successfully;
1467    
1468    checkpoint57p_post
1469    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1470    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1471      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1472    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1473    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1474      (was already the case for dissipation with mom_vecinv,
1475       and also the case for grad.PhiHyd when staggered-timeStep)
1476      This will allow to put dissipation out-off the AB time-stepping.
1477     Unfortunately, affects truncation error. Update output of exp. that "fails"
1478      (cg2d matching number) and leave the others for later: front_relax(10),
1479      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1480      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1481    
1482    checkpoint57o_post
1483    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1484      (2) its ready to be documented during the 20050801 DocFest
1485    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1486      for ideal_2D_oce and lab_sea on linux_ia32_g77
1487    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1488      in global1x1_tot/code_seaice_adj to access indices 32, 33
1489      (worth another tag)
1490    
1491    checkpoint57n_post
1492    o adding precip control xx_precip 32
1493    o adding swflux control xx_swflux 33
1494    o Replacing 10 forcing penalty cost routines by 1 generic.
1495    o Implementing partitioning in time-mean and variable adjustment
1496      for atmos. state.
1497    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1498    o in natl_box_adjoint:
1499      * updated exp 1 to 10
1500        (but does not have time-mean vs. variable split results yet)
1501    o updated global1x1/*_seaice_adj/
1502      to incorporate latest changes
1503    o enable useSingleCpuIO for mdsio vector routines
1504      (applies in particular to tapelev I/O)
1505    o removed inefficient K-loop in all active_file*control*.F
1506    
1507    checkpoint57m_post
1508    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1509      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1510    o pkg/exch2: filling of face-corner halo regions is optional
1511      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1512    
1513    checkpoint57l_post
1514     tag before updating tutorials (pre-release-2)
1515    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1516       for output and interpolation of input fields onto model grid)
1517    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1518       Affects results of exp. rotating_tank ; update output.txt.
1519    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1520          and taking the square quantity and/or using a fraction-weight field.
1521    o fix aim_diagnostics_init.F mate numbers.
1522    o add mnc output capability to diagnostics/diagstat and update
1523      our cvsignore files for the ACSII output generated
1524    
1525    checkpoint57k_post
1526    o lab_sea now uses diagnostics package and provides a suite of
1527      new EXF diagnostics output.
1528    
1529    checkpoint57j_post
1530    o exf
1531      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1532        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1533        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1534      * extended diagnostics output
1535        - now includes all EXF variables
1536        - hs, hl moved to common block
1537        - separate S/R for diagnostics, called after ctrl vector is added
1538        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1539        - EXFqnet contains true Qnet (i.e. includes qsw)
1540      * updated verif. lab_sea, global_with_exf
1541      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1542        to ensure that diagnostics sees a true EXFqnet
1543    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1544    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1545      several times with different frequencies.
1546    o mnc-ify the thsice package as requested by Daniel Enderton
1547      - the monitor--MNC output needs work
1548      - many attributes need to be added (most are currently blank)
1549    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1550      - many attributes need to be added (most are currently blank)
1551    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1552    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1553    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1554      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1555         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1556    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1557     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1558    
1559    checkpoint57i_post
1560    o Diagnostics package was changed: diagnostic allocation is now deactivated
1561      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1562    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1563      add 1rst Order upwind vertical Shear.
1564    o add a quick fix for A/B checkpointing in OFFLINE mode
1565    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1566      end-run around the C/Fortran linking horror in eesup/src/timers.F
1567    o added pkg/runclock: allows user to terminate run based on wall clock
1568    o added non-hydrostatic scaling parameter: nh_am2
1569    o pkg/my82: futile attempt to make results compiler-independent by adding
1570      some "_d 0", etc. no effect.
1571    o for mnc output, fill the 'T' coordinate var with myTime and create a
1572      separate 'iter' variable for iteration count
1573    o pkg/diagnostics:
1574      add new capability: output of Global/Regional & per-level statistics ;
1575      tested against monitor output (including land & thSIce) on various exp.
1576    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1577    
1578    checkpoint57h_done
1579      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1580      data.diagnostics, data.gchem, data.ptracers) is done.
1581    
1582    o pkg/diagnostics: prepare for Global/Regional statistics.
1583      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1584    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1585      and rename it: DIFFERENT_MULTIPLE
1586    
1587    checkpoint57h_post
1588    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1589    o pkg/diagnostics: change output frequency, now in seconds (instead
1590      of Nb of iterations). This requires to change data.diagnostics.
1591    checkpoint57h_pre
1592    
1593    o in mnc, let the user create the output dir if both mnc_outdir_date
1594      and mnc_outdir_num are false
1595    o add fflags() to pkg/diagnostics which allows one to specify, on a
1596      per-file basis, the file precision [default behavior is unchanged]
1597    o added diagnostics to pkg/kpp, including computation of mixed layer
1598      depth based on a temperature/density criterion
1599    o updated verification/natl_box to test the new pkg/kpp diagnostics
1600    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1601    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1602    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1603      not mnc -- this mistake was found by JMC and is now corrected
1604    
1605    checkpoint57g_post
1606    o add Adams-Bashforth 3rd Order time stepping:
1607      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1608      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1609    checkpoint57g_pre
1610    
1611    o make lambda[Theta,Salt]ClimRelax spatially varying
1612      (default remains spatially uniform constant based on tau)
1613    o added new control variables
1614      * init. uVel, vVel, etanN
1615      * lambda[Theta,Salt]ClimRelax
1616    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1617      (suggested by G. Forget)
1618    
1619    checkpoint57f_post
1620    o add parameter "baseTime" = model base time = time at iteration zero
1621      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1622      account for baseTime shift
1623    o move Coriolis arrays from PARAMS.h to GRID.h
1624    checkpoint57f_pre
1625    
1626    o mnc-ifying the seaice package
1627    o introduced an alternative length scale calculation for use in the limiting
1628      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1629    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1630    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1631      as well as grad(vort3).  Made it compatible with both approximate form
1632      for the cubed sphere and full form of these gradients.  Added flag
1633      useFullLeith to select between approximate and full form.  
1634    o add "d0" in getcon.F to reduce differences between compilers/platforms
1635      update output.txt of exp. fizhi-gridalt-hs
1636    o change port_rand funtion to allow to set the seed.
1637    o fix obscure MNC bug involving conversion between reals and integers
1638      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1639        new version is now more standards-compliant
1640    o adjoint-related modifications
1641      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1642      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1643      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1644    
1645    checkpoint57e_post
1646    o Adding eddy stress controls a la Ferreira et al.
1647    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1648    
1649    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1650      update output.txt of exp. fizhi-gridalt-hs
1651    o add more "Z" dimensions and associated coordinate vars to MNC
1652    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1653    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1654      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1655      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1656      months and years.  Requires pkg/cal.
1657    o diagnostics: add pickup functionality
1658      - off by default for backwards compatibility
1659      - current version only uses MDSIO -- MNC will be added
1660    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1661    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1662    
1663    checkpoint57d_post
1664    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1665    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1666      output from the diagnostics package
1667    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1668    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1669      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1670    o add coordinate variables to the MNC output from the diagnostics package
1671    o change MNC-flags default value: true when useMNC=TRUE
1672    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1673      the ability (off by default) to read the grid information using MNC
1674    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1675    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1676    o do snap-shot diagnostics at the middle of the time-interval (instead of
1677      at the end).
1678    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1679      new test for AIM with thSIce + slab-ocean
1680    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1681    o move state variable diagnostics to the beginning of the time step ;
1682      (note: still needs some work specially for snap-shot diagnostics)
1683      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1684    
1685    checkpoint57c_post
1686    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1687    o generate new output.txt files on faulks with g77 & the new -ieee option
1688    checkpoint57c_pre
1689    
1690    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1691      update output.txt of exp. global_ocean.90x40x15
1692    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1693      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1694    o add saltFlux(+File) forcing capability with periodicExternalForcing
1695    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1696    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1697    o improvements for the MNC output from DIAGNOSTICS:
1698      - correct handling of the unlimitied dimension
1699      - all dims now have associated coordinate variables
1700      - variables located at U, V, and Corner ("Z") points are now written
1701        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1702        *all* data points are output
1703    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1704    o added pkg/seaice/seaice_monitor.F
1705    o mdsio_readfield.F can now read files visible only to master MPI process.
1706    o pkg/seaice: some test code for ice-modified ocean stress
1707    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1708      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1709      spurious negative numbers for precipitation and humidity.  Will cause
1710      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1711    o pkg/ctrl/
1712      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1713        May be enabled via doPackDiag
1714      *  introduce z-scaling of
1715         + gradient (doZscalePack) and
1716         + control (doZscaleUnpack)
1717    o pkg/mdsio/
1718      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1719      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1720    
1721    checkpoint57b_post
1722    o simplify options in diagnostics_fill arguments (remove weird combinations)
1723    o fix MNC coordinate variables so that they now contain per-face index
1724      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1725      general, EXCH2 grids are only aligned to a "local" coordinate system
1726    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1727    o Implement instantaneous output within pkg diagnostics:
1728      setting a negative frequency in data.diagnostics produces
1729     "snap-shot" output (as opposed to time-average if freq > 0)
1730    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1731      NOTE: change ptracer diagnostics name: use 2 characters to work with
1732            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1733    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1734      becomes the coordinate variable for the 'T' dimension
1735    o add CF-style coordinate variables to MNC
1736      - just a first cut:  numbers are meaningless on the cubesphere and
1737        missing along the T axis but otherwise it works!
1738    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1739    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1740    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1741      this is based directly on what the model compute, so that the content of
1742      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1743    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1744    o clean up build options files for SunOS, in particular
1745      - remove -traditional from xmakedepend
1746      - change -xarch=v9 to -xarch=native for f77
1747      - restore use of make (not gmake)
1748      - add CC=gcc if using g77
1749    o changes per discussion of AM, JMC, & EH3 today:
1750      - move redundant "grid" variables out of "state" -- in preparation of
1751        creating proper CF-style coordinate variables and in recognition
1752        that any/all grid variables can be easily copied (eg. w/NCO) from
1753        the grid files into any of the other NetCDF files
1754      - *always* output grid variables with MDSIO (this will eventually be
1755        changed)
1756      - output MNC grid file if useMNC is true
1757    o every instance of _END_MASTER() has been found and replaced with
1758      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1759      preprocessors
1760    o re-arrange diagnostics pkg initialisation:
1761     - allow each package to extend the available diagnostics list
1762     - add some checking and fix small problems (multi-threaded, ...)
1763     - new S/R diagnostics_fill (replace fill_diagnostics):
1764       look through the short list of active diag. (instead of the long list)
1765       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1766    
1767    checkpoint57a_post
1768    o this set of changes restores TAMC compatibility
1769      tested for global_ocean.90x40x15 adjoint on trough
1770      (what a pain)
1771    
1772    checkpoint57a_pre
1773    o some modifs in tools/build_options for sunos
1774    o call ctrl_pack for ctrl at end for optimcycle=0
1775    
1776    checkpoint57
1777    o add horizontal bi-harmonic viscosity for vertical velocity
1778      - new parameter viscA4W (defaults to viscA4)
1779      - affects only non-hydrostatic code
1780      - to be done: no-slip lateral boundary conditions
1781    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1782    o implement Implicit Vertical advection for pTracers
1783    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1784      (implemented also for implicit vertical diffusion & advection)
1785    o OBCS: extend application of tracer open boundary conditions
1786      to a strip beyond the boundary of width Olx/Oly
1787    o add call monitor to TAF set of required calls (flow directives)
1788      and include in natl_box_adjoint
1789    o untangle a few ifdefs related to cost, ctrl, autodiff
1790      untangel a few ALLOW_ECCO_OPTIMIZATION
1791    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1792      (theta2, salt2 in ecco_cost_weights)
1793    
1794    checkpoint56c_post
1795    o OBCS as control variables
1796      - update ctrl_ad_diff.list, obcs_ad_diff.list
1797      - remove balance of obcs controls from default
1798      - fix index bug nobcs in ctrl_init
1799      - fix dummy fields filen in ctrl_pack
1800      - add dummy weights for obcs
1801    o lsopt: comment out fort.94 output
1802    o optim:
1803      - remove unnecessary header files
1804      - adjusted namelists
1805      - add xerbla.F to Makefile
1806    o exf:
1807      - multiple modifications of exf_check_range
1808      - unit change in exf_init_runoff from [m/year] to [m/s]
1809    o mdsio:
1810      - i/o-vector change debugLevel from debLevA to debLevB
1811    
1812    checkpoint56b_post
1813    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1814      is called from DO_THE_MODEL_IO
1815      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1816      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1817      - clean up PTRACERS_WRITE_TIMEAVE a little
1818    o add another verification experiment that tests both the cfc-pkg and
1819      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1820      reactive tendencies treated inline with regular timestepping
1821    o testreport previously did a lousy job of comparing small numbers, so
1822      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1823      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1824      testreport.
1825    o ptracers_monitor: bug fix for MPI
1826    
1827    checkpoint56a_post
1828    o GCHEM: finish reorganizating the package
1829      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1830        (introduces another 3D-array for each passive tracer, but only if
1831        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1832        gchemTendency is not needed because the timestep is done separately)
1833      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1834      - GCHEM is now---more or less cleanly---separate from PTRACERS
1835      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1836        so clear to me how that should be done in a general way.
1837    o CFC: improve formatting of output in CFC_ATMOS
1838    o PTRACERS:
1839      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1840        that ALL experiments with ptracers enable can be checked. This makes
1841        GCHEM_MONITOR obsolete.
1842      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1843        monitorFreq
1844      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1845    o add PTRACERS (PTR0[1-5]) to testreport output
1846    o exf_check_range:
1847      * default changed to .TRUE.
1848      * will check values for niter0 if debLevA, every timestep if debLevB
1849      * STOP in exf_check_range if 'out of range'
1850      * range chosen generous to allow for potential extema
1851      TBD: a version with stricter range
1852           permitted range would be runtime parameters
1853    o GMredi:
1854      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1855      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1856      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1857    o GCHEM:
1858      - move call to GCHEM_FORCING_SEP, so that it is now called before
1859        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1860      - introduced a useGCHEM runtime flag and applied it everywhere.
1861      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1862        this flag is now only visible within GCHEM-pkg routines.
1863      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1864        be replaced by a 3D array that is computed before thermodynamics; for
1865        this, the tracer ID iTracer had to be included into the parameter list
1866        of ptracers_forcing
1867      - set up forward_step to call gchem_forcing, that will replace
1868        gchem_forcing_int in ptracers_forcing
1869      - cleaning up
1870    o small cleaning of exch2: remove files that are also in eesupp/src
1871    
1872    checkpoint56
1873    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1874    o mnc: cleanup "full" files--fixes out-of-memory problem
1875    o ECCO-GODAE
1876      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1877      * fully merged and updated from SIO code
1878        windstress sign change affects
1879        - exf_inscal_[u/v]stress
1880        - sign of xx_tau[u/v] adjustments
1881        - signs in cost_scat
1882      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1883      * natl_box_adjoint updated and compressed
1884      * 2-level checkpoint switch added
1885        (tested in EXP. 1 of natl_box_adjoint)
1886      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1887    o SVD
1888      * first complete, non-hacked version for SVD calculations
1889      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1890        performed via direct access files admtlm_vector.it????
1891        (via ctrl_[un]pack)
1892      * optimcycle is used for ARPACK iteration counter
1893        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1894      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1895        and add linear transforms where necessary
1896      * controls are initial/final SST, SSS (can be extended; need to check
1897        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1898    o mdsio: filename info to both stderr, stdout
1899    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1900      from sign change
1901    
1902    checkpoint55j_post
1903    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1904      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1905    o add consistent build directories and .cvsignore files to verification
1906    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1907    o make all subroutines 30 or less characters in length for certain older
1908      compilers to work (a thorough search only turns up two routines in
1909      pkg/ptracers)
1910    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1911      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1912    
1913    checkpoint55i_post
1914    o change arrays for total vertical diffusivity (2.D if explicit,
1915      3.D if implicit) ; each ptracer uses its own background value.
1916    o added mnc/NetCDF output capability to ocn_compon_interf
1917      - added bits to verification/cpl_aim+ocn so that it can run on
1918        ITRDA and other clusters without the mpirun "-wd" option
1919    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1920      configuration
1921    o give MNC the ability to create additional files rather than
1922      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1923      - the default is just less than 2GB which is a practical limit
1924        on many systems
1925    o Compute the non-local term using either KPP vertical diffusivity (=default)
1926       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1927    
1928    checkpoint55h_post
1929    o add verification test "vermix"
1930    o remove all the *_ioinc flags and replace with the single global
1931      outputTypesInclusive flag
1932    o allow to set a vertical profile of vertical diffusivity for T & S
1933    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1934    o useMNC moved from data.mnc to data.pkg
1935    
1936    checkpoint55g_post
1937    o Renaming carbon AD experiments to comply with testreport conventions
1938    o Updating adjoint of Held-Suarez hs94.1x64x5
1939    o Fixing directives for non-ECCO forward_step, after ECCO directives
1940      have been fixed to avoid recomp. of do_oceanic_phys
1941      Works well for global_ocean.90x40x15,
1942      but recomp. issue remains for carbon
1943    o Updating adjoint output for natl_box_adjoint after
1944      pkg/ecco has been modified (see taga c55d_post)
1945    
1946    checkpoint55f_post
1947    o rename to timeave_init_fixed
1948    
1949    checkpoint55e_post
1950    o some delicate re-shuffle of store directives to avoid one
1951      extra call of do_oceanic_physics
1952      affects ecco_the_main_loop.F, do_oceanic_physics.F
1953      checkpoint_lev1_directives.h
1954    o NB: this may break global_ocean adjoint temporarily,
1955      but it is clear how to fix it. Will do later, need this now.
1956    
1957    checkpoint55d_post
1958    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1959    o ecco_cost_weights is modified to 1x1 runs
1960    o modifs to allow observations to be read in as
1961      single file or yearly files
1962    o enable to read exf forcing fields as either
1963      single file or yearly files (flag useExfYearlyFields)
1964    checkpoint55d_pre
1965    
1966    o switch between 2-level and 3-level checkpointing
1967    o add ability of MNC to write local and "partial" (eg. 2D slices where
1968      the full 3D field is never actually stored) arrays to NetCDF files
1969      with the correct (that is, the complete multi-dimensional) set of
1970      array indicies
1971      - used in mom_vecinv() to write the diagFreq output
1972      - tested (demonstrated) in verification/aim.5l_cs
1973    o further mnc-ification
1974      - add verification/lab_sea to the list with mnc setups
1975      - fix undefined mnc v-names in cd_code
1976      - add kpp to mnc output (both snapshot and timeave)
1977    o non-hydrostatic code
1978      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1979        in calc_gw.F
1980      - defaults to viscAh
1981      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1982        friction or Leith) in non-hydrostatic mode, as long as there is
1983        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1984    o pkg/cost
1985      extend simple cost functions to treat time mean quantities
1986      (T,U,V) via cost_accumulate_state from cost_tile
1987    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1988        be 2 times larger than the minimum size the advection scheme requires.
1989        now get a perfect conservation of salt in advect_cs test-exp (updated)
1990    o GGL90 (Gaspar's TKE mixed layer)
1991      - add horizontal diffusion of TKE, requires exchanges in
1992        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1993        default. In OPA there is no horizontal diffusion of TKE but the
1994        mixing coefficients are computed from a horizontal average of TKE of
1995        6 points or so. I think that diffusion has a little more physical
1996        justification.
1997      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1998        was in vain)
1999      - mask tke-variable in ggl90_init
2000    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2001    o fix biharmonic diffusion on CS-grid.
2002    o more obcs stuff
2003      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2004        for reading boundary values. This routine is called from
2005        obcs_prescribe_read
2006      - updated obcs_check
2007      - changed sponge layer relaxation parameter units for days to seconds
2008      - turned off sponge layer by default
2009      - changed argument list of OBCS_CALC to myTime+deltaTclock
2010      - fixed about 35 bugs in obcs_external_fields_load
2011    
2012    checkpoint55c_post
2013    o obcs stuff
2014      - new runtime flags useOBCSprescribe, useOBCSbalance
2015      - re-arranged obcs_calc
2016      - moved exf_getobcs to obcs_prescibe_read
2017        obcs_prescibe_read is called after ORLANSKI stuff
2018        and independent of it (executable can contain all).
2019      - updated obcs_check
2020      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2021        These may be necessary only if tangential velocities are
2022        prescribed at OB, not sure, needs testing.
2023    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2024      which simplifies the calls and passes the ifc check-bounds test
2025    
2026    checkpoint55b_post
2027    o add a 2D scalar, Z location, exchange_2 routine.
2028    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2029      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2030      affects advect_cs results (for the wrong reason): update output.txt
2031    o use a more standard discretization for biharmonic viscosity ;
2032     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2033      affects results of dome set-up: update output.txt
2034    o fix gad_advection.F (CubedSphere part), back to version 1.23
2035    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2036    
2037    checkpoint55a_post
2038    o merged code to
2039      * prescribe/read time-dependent open boundaries
2040        (works in conjunction with exf, cal)
2041      * sponge layer code for open boundaries
2042      * each boundary N/S/E/W now has its own CPP option
2043        (healthy for the adjoint)
2044    
2045    checkpoint55
2046    o up-to-date adjoint of previous breaks
2047      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2048      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2049      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2050      - carbon: * remove tr1-related adjoint verification
2051                * add ptracer as control variable
2052    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2053      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2054    
2055    checkpoint54f_post
2056    o in verification/carbin/ remove experiment related to
2057      ALLOW_PASSIVE_TRACER (array tr1 etc)
2058      code_ad/ input_ad/ results_ad
2059    
2060    o add two new packages
2061      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2062        + subject to optimization (memory)
2063      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2064        + subject to reordering (many GOTOs in the original code)
2065        + so far opps is called for every (i,j) point, and then operates in
2066          the vertical; one may want to reorder the scheme in order operate in
2067          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2068          fields)
2069    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2070      - all verification tests compile and run with linux_ia32_g77
2071      - defaults are compatible with current input files--nothing
2072        should change if you were not previously using MNC
2073      - MNC output has been added in numerous places (eg. timeave)
2074        but there are still a few writes not yet do-able with MNC
2075        (this is in progress)
2076      - flags now allow for either/or/both use of MDSIO and MNC and
2077        documentation will soon follow
2078      - numerous small formatting cleanups for ProTeX
2079    o add version info (via BUILD_INFO.h) to MNC and stdout
2080    
2081    checkpoint54e_post
2082    o add two new packages
2083      - pp81 (Packanowski and Philander, 1981), Richardson number and
2084        stratification dependent mixing
2085      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2086      - these scheme operate in a similar manner as KPP (without ghat, of
2087        course), however there is only one diffusivity that is used for both
2088        temperature and salinity (and passive tracers)ç
2089    o add offline package
2090    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2091      provided by Stephanie Dutkiewicz
2092    o genmake2: add ability to search for C compilers and cleanup test output
2093      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2094    
2095    checkpoint54d_post
2096    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2097    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2098      leading to additional shift by 5 days each year of integration
2099       (i.e. leading to considerable offset over the years)
2100    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2101    o start with no AB and no initial filtering (staggerTimeStep):
2102      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2103    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2104      (external loading & cpl import/export stay in forward_step.F)
2105    o update coupling interface to work with new staggerTimeStep
2106    o change MDSIO ptracers_pickup.
2107    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2108    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2109    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2110    
2111    checkpoint54c_post
2112    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2113      this affects (truncation error) output.txt of test-exp:
2114       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2115    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2116    o change Qnet to always be the net heat flux, (+upward).
2117      affects (truncation error) output of natl_box exp.: updated
2118    o define the max number of passive tracers in PTRACERS_SIZE.h
2119    o start to test mnc routinely in exp0
2120    o add sea-ice loading (sIceLoad) as a new forcing field.
2121    
2122    checkpoint54b_post
2123    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2124       impressive on Altix and Opteron systems)
2125    o diagnostics can now write NetCDF files through the mnc package
2126    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2127    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2128    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2129      affects (truncation error) output of lab_sea & natl_box exp.: updated
2130    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2131    
2132    checkpoint54a_post
2133    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2134    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2135    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2136    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2137      + internal_wave (shift in writing cg2d_ini_res)
2138    checkpoint54a_pre
2139    
2140    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2141      - modified verification/lab_sea and natl_box_adjoint accordingly
2142    
2143    checkpoint54
2144    checkpoint53g_post
2145    o prepare splitting of thermodynamics: store convect.counter in common block
2146    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2147      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2148    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2149    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2150    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2151    o restore adjointability
2152    
2153    checkpoint53f_post
2154    o modifications that affect AIM experiment results (update output.txt):
2155      - no advection of S at top interface Nr (pkg/generic_advdiff)
2156      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2157    o AIM pkg:
2158      - include stability function into surf.Flux derivative relative to Tsurf
2159      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2160    
2161    checkpoint53e_post
2162    o merged cylindrical coord configuration
2163    o added rotating_tank experiment
2164    checkpoint53e_pre
2165    
2166    checkpoint53d_post
2167    o faulks upgraded: re-generate output.txt that have changed:
2168       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2169    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2170    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2171    o added Sadourny discretization of Coriolis
2172      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2173      - re-enabled use of omega3 (useAbsVorticity)
2174    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2175      vector-invariant equations
2176      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2177    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2178      hopefully without new bugs
2179      - still to do: biharmonic friction for non-hydrostatic w
2180    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2181    o regenerated output for global_ocean_ebm (using -ieee)
2182    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2183      of mom_common/
2184      - simple re-arrangement of instructions within computing loop
2185    checkpoint53d_pre
2186    
2187    checkpoint53c_post
2188    o new version of coupler for AIM+thSIce and Ocean models
2189     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2190     - land: change Evaporation of snow
2191     - aim with thSIce: fix bug in snow-precip.
2192    o changes to calc_gw.F
2193     - bug fix for w^2 term near the bottom boundary
2194     - (hopefully) improve the lateral slip boundary condtions for use with
2195        partial/looped cells
2196      - because the bug fix changes two verification experiments anyway (exp5
2197        and plume on slope), change the lateral boundary condition from half slip
2198        to the value of no_slip_sides
2199    o ebm package wasnt quite up to the parallel task. Fixed that.
2200    o Adjoint of EBM package + verification
2201      * TLM OK
2202      * ADM not sufficient accuracy yet (needs further testing)
2203    
2204    checkpoint53b_post
2205    o Commiting new energy balance model to repository
2206      * package is pkg/ebm
2207      * verif. is verification/global_ocean_ebm
2208      * references are in ebm_driver.F
2209    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2210    C        Global thermohaline circulation. Part I:
2211    C        Sensitivity to atmospheric moisture transport.
2212    C        J. Climate 12(1), 71-82
2213    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2214    C        Global thermohaline circulation. Part II:
2215    C        Sensitivity with interactive transport.
2216    C        J. Climate 12(1), 83-91
2217    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2218    C        Destabilization of the thermohaline circulation
2219    C        by atmospheric eddy transports.
2220    C        J. Climate 7(12), 1870-1882
2221    o Will need long integration testing.
2222    checkpoint53b_pre
2223    
2224    o created pkg/mom_common in preparation for variable viscosity code
2225    o renamed and split ini_mnc_io
2226    o pkg/land: only liquid water can diffuse or run-off
2227    o AIM using land: soil wetness availability account for snow
2228    o added printMapIncludesZeros to EEPARMS namelist
2229    
2230    checkpoint53a_post
2231    o restore TAMC compatiility for exf_constants.h
2232      (no usage of _d in .h)
2233    o Additional storing in KPP in an attempt to fix
2234      TAMC problem with adjoint of KPP code.
2235      (no success...)
2236      Identical code works fine with TAF.
2237    o Fixed verification/natl_box_adjoint experiments.
2238      Initial conditions for Experiments 4 and 5 are now
2239      set to "SEAICE_initialHEFF=0", which is more reasonable,
2240      and hence gives results closer to that of Experiment 2.
2241      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2242    
2243    checkpoint53
2244    o stable checkpoint with up to date adjoint
2245      TLM tests only run for 1st grdchk at the moment. Its unclear if
2246      this is a code problem or a problem with resetting code for g_
2247      variables that is being autogenerated wrong.
2248      Otherwise:
2249       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2250       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2251         are both still in chaos following their security messes.
2252    
2253    checkpoint52n_post
2254    o various build (mostly genmake2) changes including:
2255      - ability to build/run more easily within Cygwin and MacOS X
2256      - more complicated Makefiles with a stronger dependence on Gnu Make
2257    o pkg/seaice modifications
2258      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2259        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2260        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2261      - changed proxy for geostrophic velocity and updated
2262        verification/lab_sea/results/* accordingly
2263      - removed ADI dynamic solver from pkg/seaice
2264      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2265        they caused a segmentation fault under certain circumstances
2266      - removed unused field WATR
2267    o bug fix in exf-package:
2268      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2269         now reflect that.
2270    o small fixes in the cal-package:
2271      - set reference date to first of January for the 'model'-calendar
2272      - failing of cal_CheckDate in cal_FullDate now actually results in a
2273        warning
2274    o small modifications in exf-package to increase flexibility:
2275      - change climtempfreeze from a constant to a runtime parameter that
2276        is specified in data.exf_clim (default = -1.9)
2277      - introduce runtime parameter windstressmax (default = 2.0) that is
2278        specified in data.exf
2279    o fix in pkg/thsice:
2280      - update Evap (Tsf changes) to be consistent with Latent heat flux
2281      - maintain snow precipitation unchanged (even if Tsf >=0).
2282     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2283    
2284    checkpoint52m_post
2285    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2286      this does not change any of the results, because myIter=0 in swfrac always
2287      lead to jwtype=2 (the default anyway), but the call makes little sense
2288      as a default
2289    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2290    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2291      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2292    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2293    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2294    o extending useSingleCpuIO option to work with new exch2 I/O format
2295      - old-style, missing-tile I/O is still accessible by defining CPP
2296        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2297    o monitor package can write to NetCDF files and/or STDOUT
2298    o fix re-definition bug in MNC_GRID_INIT_ALL()
2299    o doc/api_reference added
2300      - a framework for building an API Reference Manual using all
2301        the "protex" comments embedded in the code
2302      - see pkg/generic_advdiff, pkg/mnc for examples
2303    o MNC:
2304      - make myThid the last argument for all subroutines
2305      - new default for the grid files: NO halos
2306      - add useMNC and other run-time flags
2307      - separate per-file-group handling of the unlimited dimension
2308      - early initialization of MNC w/ flags read at the eeboot stage
2309        and lookup tables set in initialize_fixed
2310      - write all MNC output to a freshly-created directory
2311    o thermodynamics sea-ice (thsice) is now tested with testreport.
2312    o test exp. advect_cs: use the standard cs32 grid ; update output.
2313    o Added functionality to grdchk:
2314      pick global i,j,k position (or nearest wet) where to perform check.
2315    
2316    checkpoint52l_post
2317    o new land formulation:
2318      a) use ground enthalpy as prognostic variable to ensure exact
2319         energy conservation.
2320      b) account for water temperature and for latent heat of freezing
2321         in all processes (rain, run-off, ground storage)
2322      c) compute surface and ground temperature implicitly.
2323    o aim_v23 modification for new land model:
2324      a) Treat separately land / ocean / sea-ice surface fluxes
2325         to allow implicit computation of land & sea-ice surface temp.
2326      b) add snow precipitation.
2327    checkpoint52l_pre
2328    
2329    o fix problem (when 1 tile is empty) in min/max monitor.
2330    o fix bug in timeAve (u,vZetatave in common block)
2331    o no restoring terms under ice for pkg/seaice
2332    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2333    o bug fix for pkg/seaice pickups
2334    o change MNC call locations and add coordinate attributes
2335    o mask vorticity at the corner ; affects global_ocean.cs output
2336    o fix ini_curvilinear_grid ; test CS experiments with mpi
2337    o aim.5l_cs: modify sea-ice fraction input file ; update output
2338    o exf: Adding simple range check routine for exf fields after read
2339    
2340    checkpoint52k_post
2341    o removed top-level directory "diags"
2342      - we migrated these functions to pkg/timeave a long time ago
2343    o fixed bug introduced in pkg/monitor
2344    o accuracy ctrlprec = 32 insuffient for gradient checks using
2345      averaged fields (I/O via cost_averages)
2346      -> use ctrl.h in active_file*.F to control I/O precision.
2347    o paramter list of CALL ADTHE_MAIN_LOOP
2348    o added initial do_the_model_io to ecco
2349    o set all ...Freq to zero after cost_final
2350      taveFreq, dumpFreq, pChkptFreq
2351    o MAIN and ECCO differentiability restored
2352    
2353    checkpoint52j_post
2354    o fix nchklev in tamc.h for global_ocean...
2355    o Bringing flow and store directives up-to-date
2356    o Really weird thing!
2357      call do_the_model_io from the_main_loop with parameters
2358      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2359      TAF places a faulty re-call of initialise_varia
2360      after cost_final call which should not be there!
2361    checkpoint52j_pre
2362    
2363    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2364      error messages
2365    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2366    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2367      debug output
2368    o modfied mdsio_writefield.F to handle non-global files under exch2
2369    o update AIM Cubed-Sphere exp (aim.5l_cs):
2370      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2371    o update AIM Equatorial Channel exp:
2372      use standard aim_v23 pkg and change the SST fields to be more realistic.
2373    o globalFile now works with exch2
2374    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2375      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2376    o limit timeave output for hi-res integrations
2377    
2378    checkpoint52i_post
2379    o removed CPP_EEOPTIONS.h from verification/*/code
2380    o updated the tiling for global_ocean_pressure
2381    checkpoint52i_pre
2382    
2383    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2384      the old pkg/aim).
2385    
2386    checkpoint52h_pre
2387    o shortened offending lines in exch2_send_rx?.template
2388    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2389    o genmake2: add build & execute test for NetCDF code
2390    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2391      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2392    o added useSingleCPUIO flag to monitor.F and mon_out.F
2393    o added temporary hack for sea-ice dynamics on the cube:
2394      metric terms are ignored and it is assumed that
2395      there is no sea-ice on cube faces 1, 2, 4, and 5.
2396    
2397    checkpoint52f_post
2398    o added exch2 cube routines to pkg/exch2
2399    o modified hs94.cs-32x32x5 to use it
2400    o added new grid files to hs94.cs-32x32x5
2401    checkpoint52f_pre
2402    
2403    checkpoint52e_post
2404    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2405      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2406    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2407      to work with implicit vertical advection and AB ;
2408    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2409    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2410     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2411    checkpoint52e_pre
2412    
2413    o fix bug in impldiff when Nr=1 or Nr=2.
2414    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2415    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2416    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2417      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2418    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2419    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2420    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2421    
2422    checkpoint52d_post
2423    o re-tiled many expts to allow comparison in multi-processor mode
2424      - updated output accordingly
2425      - changed hs94.128x64x5 to use intial T from file rather than use the
2426        random number generator
2427    o add infrastructure in model routines for fizhi and gridalt packages
2428    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2429    o changes to permit hi-res, cubed-sphere, configuration
2430      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2431      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2432      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2433        of surface winds for the cube
2434      (A verification experiment, based on global_ocean.cs32x15, but with
2435       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2436       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2437       complete with example surface forcing files and matlab scripts to look
2438       at the output and compare it with that of global_ocean.cs32x15.)
2439    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2440       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2441       to conform to the common rule.
2442    o check-in the first version of the coupler + interfaces for multi-components
2443       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2444       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2445       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2446       - ocean and atmos. share the same horizontal grid (no interpolation).
2447       - exchanges between component and coupler is done in forward_step
2448    o new verification experiment, cpl_aim+ocn:
2449       coupled ocean - AIM atmosphere on cs32 grid.
2450    
2451    checkpoint52d_pre
2452    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2453    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2454    
2455    checkpoint52c_post
2456    o Fixing OPTIONS files for use of exf:
2457      - ALLOW_ECCO not needed
2458      - ECCO_CPPOPTIONS.h should not be included from
2459        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2460        as has been the case in the past
2461      - All cal/exf related options are currently set in
2462        single header file. Should remain so until we
2463        agree on a consistent new policy.
2464    o Removed all CPP options for cal package.
2465      cal has no more CPP options.
2466    o modified STOREs in GAD_ADVECTION
2467    o corrected key comp. for passkey
2468    
2469    checkpoint52b_post
2470    o new version: "thsice" of thermodynamic sea-ice pkg:
2471     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2472     - modify fluxes but do not change theta directly;
2473     - light cleaning of bulk_force pkg (still needed with thsice).
2474     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2475       + output_thsice.txt to test thsice & bulk_force pkgs.
2476    o put back grid & coriolis monitor output.
2477    checkpoint52b_pre
2478    
2479    o call "do_the_model_io" at the beginning (=> dump initial state)
2480    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2481    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2482      (need info on NUMBER_OF_PTRACERS)
2483    o missing PTRACERS headers in some routines
2484    o default tamc.h in pkg/autodiff supposed to crash
2485      to ensure proper customization
2486    
2487    checkpoint52a_post
2488    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2489      - moved surfaceTendencyTice from pkg/seaice to main code
2490      - subroutine FREEZE_SURFACE now limits only surface temperature
2491        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2492        => new output.txt for global_ocean.cs32x15 & global_with_exf
2493      - keep the old version of FREEZE for backward compatibility;
2494        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2495      - corresponding modifs for TAF directives
2496    o added surface flux output variables to TIMEAVE_STATVARS
2497    o time-averaged output for pkg/ptracers
2498    o fix problem with ECCO-related divided adjoint
2499      snapshot file was missing some ad-variables,
2500      but no warning issued by TAF
2501    
2502    checkpoint52a_pre
2503    o some bug fixes for #undef REAL4_IS_SLOW
2504    
2505    checkpoint52 = ecco_c52_e35
2506    o after testing adjoints of checkpoint51u_post
2507    
2508    checkpoint51u_post
2509    o this is the post-merge tag of the ecco-branch
2510      (needs another clean checkout and re-testing)
2511    o various natl_box_adjoint configs and results
2512      but no input fields
2513    o obcs adjoint not yet merged!
2514    o adding ECCO global 1x1 and 2x2 degree configs
2515    o updated/extended some store directives for seaice
2516    o pkg/ecco now containes ecco-specific part of cost function
2517    o top level routines the_main_loop, forward_step
2518      supersede those in model/src/
2519      previous input data.cost now in data.ecco
2520      (new namelist ecco_cost_nml)
2521    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2522    
2523    checkpoint51t_post
2524    o this is the pre-merge tag of the ecco-branch
2525    
2526    checkpoint51s_post
2527    o cleanup: removed various obsolete #define-s
2528    o pkg/grdchk
2529      - renamed 'ph-grd 3' to 'grad-res'
2530      - merged from ecco-branch
2531        (remaining bug fixes for obcs gradient checks)
2532      - additional high-precision output for testreport
2533        (grep for 'precision_grdchk_result')
2534    
2535    checkpoint51r_post
2536    o cleaned up or removed CPP_OPTIONS.h files
2537    o updated results for some of the tests to reflect the new
2538      optfiles (-ieee: -O0 instead of -O3)
2539    
2540    checkpoint51q_post
2541    o cd_code:
2542      - moved cd_scheme.F -> cd_code_scheme.F
2543      - separate read_checkpoint from cd_code_ini_vars.F
2544      - separated cd_code part from write_checkpoint
2545      - updated AD_SOURCE, generated .flow
2546      - added CD_CODE_VARS.h to the_main_loop
2547      - Moving cd_code specific store dir.s to pkg/cd_code
2548    o ctrl package totally restructured
2549      - pack/unpack now optional and decoupled from
2550        xx_/adxx_ I/O
2551      - ctrl_pack/unpack cleaned
2552        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2553      - confined inclusion of AD_CONFIG.h to where necessary.
2554    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2555    
2556    checkpoint51p_post
2557    o create initial cd_code package
2558      - WARNING: the initialization of fields within packages
2559        is broken because INI_FIELDS (where READ_CHECKPOINT is
2560        called) is called *before* PACKAGES_INIT_VARIABLES.
2561        This seems to be backwards since
2562        1) its important to initially zero the entire field including
2563           the "halo" region
2564        2) zeroing needs to be done *before* reading pickup info
2565           and the pickup call might or might not happen in any
2566           particular run
2567      - this needs an overhaul for R2
2568    o cleanup verification/*/code/GMREDI_OPTIONS.h
2569    o cleanup testreport
2570    
2571    checkpoint51o_post
2572    o bringing AD-related verif's up to date with genmake2
2573      - carbon/
2574      - global_ocean.90x40x15/
2575      - hs.94.1x64x5/
2576      - (front_relax/ )
2577    o (more) consistent directory structure for AD-related verif.'s
2578    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2579    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2580    o bug fix in find_alpha.F for MDJWF:
2581      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2582        change rho -> rho-rhoConst
2583      - replace call find_rho to find_rhonum
2584    o initialisation of rFlx extended to full array (required by TAF)
2585      and shifted to thermodynamics
2586    o removed PTRACERS.h in ptracers routine
2587    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2588    o Correcting initialisations for fVerU, fVerV.
2589    o helping TAF to recognize dependency on kUp for
2590      fVerU, fVerV
2591    o Replacing delZ by delR in pkg/ctrl/
2592    checkpoint51o_pre
2593    
2594    o undid all of cp51 pending some cleanups and discussion
2595    o added the [#include "AD_CONFIG.h"] statement to all files that need
2596       it for adjoint/tl #defines
2597     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2598     o removed tools/genmake since it no longer works
2599    
2600    checkpoint51n_post
2601    o modifications to make FREEZE flux visible to pkg/kpp
2602      - moved surfaceTendencyTice from pkg/seaice to main code
2603      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2604      - subroutine FREEZE now limits only surface temperature
2605        (this means new output.txt for global_ocean.90x40x15,
2606         global_ocean.cs32x15, and global_with_exf)
2607    o added surface flux output variables to TIMEAVE_STATVARS
2608    
2609    checkpoint51n_pre
2610    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2611    o added [#include "AD_CONFIG.h"] to all files that use the following
2612      defines:
2613      - ALLOW_ADJOINT_RUN
2614      - ALLOW_TANGENTLINEAR_RUN
2615      - ALLOW_ECCO_OPTIMIZATION
2616    
2617    checkpoint51m_post
2618    o incorporating changes to get TAMC/TAF working in genmake2
2619      - added new TAMC/TAF targets to the Makefile
2620      - various cleanups related to package handling
2621      - these changes should have no impact on the forward model
2622    
2623    checkpoint51l_post
2624    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2625     - faster algorithm for cal_addtime.F
2626     - higher precision arithmetic, where needed
2627     - pkg/exf *startdate variables changed from calendar date to
2628       model integration time
2629    
2630    checkpoint51l_pre
2631    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2632    o enable to apply restoring on S & T only in a latitude band.
2633    o update output (external_forcing_surf modif. change truncation errors)
2634       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2635    
2636    checkpoint51k_post
2637    o change default to: useNHMTerms=.FALSE.
2638     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2639       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2640     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2641        exp1, ideal_2D_oce
2642     - change data file of oceanic exp (leave the results unchanged for now)
2643       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2644    o set gravitySign automatically according to the vertical coordinate used
2645      (and change sign: back to "logical" value: +1 when R increases downward)
2646    o added an include barrier to the default CPP_OPTIONS.h and
2647      removed the #include "PACKAGES_CONFIG.h" from it
2648    o fix a bug in mom_fluxform (from chk51j_post)
2649    
2650    checkpoint51j_post
2651    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2652    o adjusted some flow directives (dynamics, thermodynamics)
2653    o added cubed-sphere case to test cost function
2654    o heckpoint_lev?_directives.h now include
2655      pkg-specific directives, whenever those are enabled.
2656    o Moving pkg-specific flow directives to corresponding pkg
2657      Moving pkg-specific differentiation list to corresponding pkg
2658      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2659      ---> conventions are
2660           - pkg_ad.flow
2661           - pkg_ad_diff.list
2662           - pkg_ad_check_lev?_dir.h
2663    
2664    checkpoint51i_post
2665    o merge of the branch-genmake2
2666      - knowingly breaks the older genmake
2667      - automatic generation of all ALLOW_${PKG_NAME} defines
2668      - new testreport supersedes older testscript
2669    o large number of package inclusion and header cleanups
2670    checkpoint51i_pre
2671    
2672    o new output for adjoin of global ocean vector invariant
2673    o fix for checkpoint of thermodynamic seaice and bulk_force
2674    o Steph gchem various cleanups
2675    
2676    checkpoint 51h_pre
2677    o fixed some single quotes
2678    o modify gchem pkg to be more versatile
2679    o modifications to clean up dic pkg
2680    o add pkg/cfc
2681    
2682    checkpoint51g_post
2683    o provide links for ARPACK and ADM*TLM
2684    o start removing verification/vero/
2685    o update AD-related stuff
2686      (in particular some IF-statements in model/src/ routines)
2687    o adding to verification/global_ocean.90x40x15/ adjoint of
2688      vector invariant setup
2689    
2690    checkpoint51f_post
2691    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2692    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2693      of tracer Green's fucntions for ocean inversion project.
2694    
2695    checkpoint51f_pre
2696    o Added on-the-fly spatial interpolation capability
2697        "USE_EXF_INTERPOLATION" to pkg/exf.
2698      - This is a temporary Cartesian-grid hack until
2699        the super-duper ESMF coupler becomes available.
2700      - See verification/global_with_exf/README for usage example.
2701      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2702        flags and modified pkg/seaice accordingly.
2703    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2704        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2705        non-local transport term.
2706    
2707    checkpoint51e_post
2708    o pkg/mom_vecinv:
2709      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2710      - add time-ave diagnostic of vorticity advection.
2711    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2712    o atmospheric geopotential: - include water vapor effect;
2713                                - use p^kappa in p* scaling.
2714    o land pkg: read initial state from files.
2715    o AIM : add stratospheric drag in the upper level
2716    
2717    checkpoint51d_post
2718    o change function ILNBLNK (=> last non-blank char.) to return zero
2719      (instead of the string length) when the string. char is empty
2720    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2721    o modif's to restore TAMC compatibility
2722      - avoid "_d" constructs in PARAMETER declarations
2723      - avoid interrupting lines by comment lines
2724    o Use cluster local disks for purely local I/O
2725      vs. globally visible disks needed for ctrl stuff
2726      (merged from ecco-branch)
2727      - new active_file_loc... and mdsio_..._loc routines
2728      - affected packages: autodiff, ctrl, grdchk, mdsio
2729    
2730    checkpoint51c_post
2731    o introducing integer flag debugLevel
2732      - debLevZero: suppress all output
2733      - debLevA: standard
2734      - debLevB: equivalent to current debugMode=.TRUE.
2735    o introducing pathname variable mdsioLocalDir for mdsio
2736      that can be specified at runtime
2737      (relevant for cluster I/O to local disk)
2738    `
2739    >>>checkpoint51b_post
2740    adjoint of ptracers
2741    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2742    o extended state in checkpoint_lev?, etc.
2743    o alternative ctrl/cost with tr1 or ptracer
2744    o new comlev1_bibj_ptracers
2745    o new ptracers.flow
2746    o made ptracers_forcing same as external_forcing_s
2747    o added verification for adjoint with ptracers
2748      - adm. grdchk fail so far
2749      - tlm. grdchk OK
2750      - checked tapelev/comlev recomputations: OK
2751    <<<checkpoint51b_pre
2752    
2753    checkpoint51a_post
2754    o added code for biogeochemistry package
2755      - new pkgs: dic, gchem
2756      - new subroutine in ptracers
2757    o modify code for biogeo packages
2758      - in model/src and pkg/ptracers
2759    
2760    checkpoint51
2761    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2762      - autodiff, ctrl, exf, grdchk, seaice
2763      kept separate packages
2764      - cost, ecco, obcs
2765    o updating verification/internal_wave, verification/lab_sea
2766      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2767    
2768    checkpoint50i_post
2769    o Preparing next differentiable checkpoint and sync
2770      of MAIN vs. ecco-branch
2771      - 1st step: this one is differentiable
2772      - 2nd step: next(! not this) checkpoint will have updated packages
2773                  from ecco-branch)
2774    
2775    checkpoint50h_post
2776    o new package "land": provide surface BC for AIM.
2777    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2778    o AIM: use true log-P extrapolation for near surface temp (= as in
2779        F.Molteni paper) ; update aim.5l_cs output.
2780    o New variable in PARM03 for more flexible pickups
2781    o somewhat cleaned package initialisation sequence for
2782      ctrl/ cost/ ecco/ in packages_... routines
2783    
2784    checkpoint50g_post
2785    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2786      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2787      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2788        made the default because of faster convergence than ADI
2789    
2790    checkpoint50f_post
2791    o exf totally restructured
2792      - replaced all exf_set_ routines by one generic exf_set_gen.F
2793        and made sure it's still differentiable
2794      - split exf_getffields.F into new exf_bulkformulae.F
2795      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2796      - updated adjoint/makefile and relevant verif. accordingly
2797    
2798    checkpoint50f_pre
2799     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2800          + change Evap over land. (update aim.5l_cs output)
2801     o added missing .cvsignores and made uniform across expts
2802     o changed configuration of tidal_basin_2d expt
2803     o added pkg/debug functions for tracing code in fatal crashes
2804     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2805     o new fn in pkg/monitor to stop model if solution grows too big
2806     o removed lots of single quotes from comments
2807    
2808    checkpoint50e_post
2809    o make KPP work with PTRACERS
2810     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2811       nearly a copy of kpp_transport_s
2812     - there is no analogue to SurfaceTendencyS, so I have to use
2813       gPtr(of the surface layer) instead
2814    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2815    checkpoint50e_pre
2816    
2817    checkpoint50d_post
2818    o change kpp output from multiple-record state files to single-record state
2819      files analogous to write_state.F
2820    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2821      analogous to the cg2d-related output.
2822    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2823      so that writing to internal file fn (with length 512) fails.
2824    checkpoint50d_pre
2825    
2826    checkpoint50c_post
2827    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2828    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2829    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2830    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2831    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2832    
2833    checkpoint50c_pre
2834    Merging from release1_p13:
2835    o bug fix for pkg/seaice dynamic solver
2836    o Added SEAICE_initialHEFF to pkg/seaice
2837    
2838    checkpoint50b_post
2839    o store u*,v* in gU,V instead of in guNm1,gvNm1
2840    o in order to put the momForcing out of the Adams-Bashforth:
2841      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2842      to timestep.F
2843    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2844    o re-generate output for highly sensitive test-exp:
2845       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2846    
2847    checkpoint50b_pre
2848    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2849    o corrected CPP option mismatch in exf_Bulk... functions for case
2850      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2851    
2852    checkpoint50a_post
2853    o Bug fix for merging between c50 and KPP.
2854      ikey was passed from thermodynamics to kpp_calc via
2855      common block rather than being recomputed in kpp_calc,
2856      in contradiction with new key itdkey.
2857      New key ikppkey created, and tamc.h headers updated.
2858    
2859    checkpoint50
2860    - 2nd step of merge with ecco-branch:
2861      merge changes in ecco-branch back into main trunk
2862    - bug fix in find_alpha
2863    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2864    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2865    - merged some sliced AD support routines
2866    
2867    checkpoint49
2868    merged from ecco-branch:
2869    o exf:
2870      - Enable initialisation of forcing fields to constant
2871        (runtime) values.
2872      - in exf_getffields.F
2873        Reduce i-/j-loop to interior domain, discarding overlaps.
2874        That also fixes wrong TAF-key computations for key_1, key_2
2875        with bulf formulae.
2876      - exf_init.F modify #ifdef for exf_init_evap
2877      - exf_getffieldrec.F, ctrl_getrec.F
2878        The following INT-usages are not safe:
2879          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2880          fldcount = int(fldsecs/fldperiod) + 1
2881        and were modified.
2882    o autodiff: checkpoint_lev...
2883      - updated storing for bulk formulae (some arrays were missing)
2884      - added state for seaice package
2885      - synchronized with main branch
2886    o DIVA:
2887      Modif.s in
2888      - the_main_loop.F
2889      - the_model_main.F
2890      and added cost_final_restore.F cost_final_store.F
2891      o With these changes, it is possible to fully separate
2892        the first forward run to compute the cost function (mdthe_main_loop)
2893        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2894        into separate model executions.
2895        This enables better tuning of DIVA to given queue sizes.
2896      o Loss of cost function value in consecutive DIVA runs is
2897        fixed by storing to 'costfinal' file.
2898      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2899        beginning/end of adjoint integration is accounted for.
2900      The current changes apply to TAF-1.4.26.
2901      TAF has one remaining bug, requiring one manual change
2902      (see MITgcm manual).
2903    o cal: synchronized between MAIN and ecco-branch
2904    
2905    checkpoint48i_post
2906    o Changes to restore differentiability of code w.r.t. previous tag
2907      (mostly adding new routines to make list and replacing
2908      pressure by totPhiHyd).
2909    o Updated and merged grdchk package
2910      - has both ADM and TLM checks
2911      - works for single- and multi-proc.
2912      - output cleaned
2913      - worked successfully for parallel DIVA
2914    o genmake:
2915      - Adding -platform=SP4
2916      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2917    o Modif. for DIVA:
2918      ctrl_unpack should not be called in intermediate DIVA interval.
2919      (similar thing would apply for active files such as
2920      tbar, sbar, psbar, which should not be reinitialised;
2921      only relevant for ecco-branch)
2922    
2923    checkpoint48h_post
2924    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2925    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2926    o Added SEAICE_initialHEFF to pkg/seaice
2927    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2928    
2929    checkpoint48g_post
2930    --- EOS:
2931    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2932      store total Potential in totPhyHyd for diagnostics & EOS.
2933    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2934    --- Pressure/geopotential gradient:
2935    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2936    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2937      ( changes results of global_ocean_pressure )
2938    o NLFS + z-coord.: add eta*Rho' contribution.
2939    o accurate phiHyd when using interface-W at the middle between 2 centers
2940     ( changes results of ideal_2D_oce )
2941    o includes r* 2nd term in potential gradient.
2942    
2943    checkpoint48f_post
2944    Merging from release1_p12:
2945    o Modifications for using pkg/exf with pkg/seaice
2946      - improved description of the various forcing configurations
2947      - added basic radiation bulk formulae to pkg/exf
2948      - units/sign fix for evap computation in exf_getffields.F
2949      - updated verification/global_with_exf/results/output.txt
2950    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2951      (SBO) core products, including oceanic mass, center-of-mass,
2952      angular, and bottom pressure (see pkg/sbo/README.sbo).
2953    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2954      to avoid negative values in shallow regions.
2955      - updated verification/natl_box/results/output.txt
2956      - updated verification/lab_sea/results/output.txt
2957    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2958    o Added useSingleCpuIO option (see PARAMS.h).
2959    o Updated useSingleCpuIO option in mdsio_writefield.F to
2960      work with multi-field files, e.g., for single-file pickup.
2961    o pkg/seaice:
2962      - bug fix in growth.F: QNET for no shortwave case
2963      - added HeffFile for specifying initial sea-ice thickness
2964      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2965    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2966      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2967    o pkg/seaice:
2968      - adjoint-friendly modifications
2969      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2970    
2971    checkpoint48e_post
2972    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2973    o dynamics: change definition of computational domain & adapt mom_fluxform
2974      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2975    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2976        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2977        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2978        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2979        inverted_barometer solid-body.cs-32x32x1
2980      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2981    
2982    checkpoint48d_post
2983    o in preparation for r*:
2984     a) use pre-computed gradient of hydrostatic potential:
2985        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2986     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2987        => affects results of glob_oce_pressure (different truncation error)  
2988      update output.txt of ideal_2D_oce & global_ocean_pressure
2989    
2990    checkpoint48d_pre
2991    o in preparation for r*:
2992      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2993      pass the 2 comp. of the grad. as arguments to momentum S/R.
2994      but for the moment, only used if it does not change the results.
2995    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2996    
2997    checkpoint48c_post
2998    Modifications in treatment of initial flux forcing controls
2999    to avoid extra storing of flux fields.
3000    
3001    checkpoint48c_pre
3002    o Added tidal_basin_2d experiment (currently 1D!)
3003    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3004    
3005    checkpoint48b_post
3006    o r* coordinate added in #ifdef NONLIN_FRSURF block.
3007     (modification to pressure gradient not yet implemented)
3008    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
3009      (for U & V) that are used for vertical advection of momentum.
3010    
3011    checkpoint48a_post
3012    o In preparation for r*, use temp. array to compute vertical transport
3013       in flux-form momentum pkg. => change results of few test-exp.
3014      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
3015                        lab_sea, natl_box & plume_on_slope
3016    
3017    checkpoint48
3018    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
3019    
3020    checkpoint47j_post
3021    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
3022    o moved adexch from forward_step to addummy_in_stepping
3023    o added exch in ctrl_map_...
3024    o aveFreq.=0. at end of cost_final to avoid overwrite in
3025      reverse checkpointing loop
3026    o Yet more changes in gmredi:
3027      * adgmredi_calc_tensor
3028        avoiding all recomputation of gmredi_slope_limit
3029      * adgmredi_x/y/rtransport
3030        added flag for excessive storing to avoid recomp. of
3031        u/v/rtans, dTdx/y/z
3032        -> this is not really necessary and very memory-consuming
3033      * adgmredi_slope_psi:
3034        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
3035      * gmredi_slope_limit
3036        re-activated full calculation of taperfct for case 'ac02'
3037    o updating verification/ adjoints of carbon, global_ocean.90x40x15
3038    
3039    checkpoint47i_post
3040    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
3041    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
3042      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
3043    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
3044    o gmredi: fix few bugs.
3045    
3046    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
3047    This will be a good checkpoint to plug into the ecco-branch.
3048    o few modif.'s to get latest version adjointed
3049      (mainly kick out code in ini_linear_phisurf)
3050    o modif's to run adjoint with exactConserv
3051    o case GM_BOLUS_ADVEC should be cleaned
3052      S/R gmredi_slope_psi should be cleaned
3053    o verification/carbon now has exactConserv=.TRUE.
3054    
3055    checkpoint47g_post
3056    o time-average AIM output: becomes independent from statvars time-average
3057      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
3058    o After TAF bug fix:
3059      Tested adjoint of gmredi package.
3060      Tests were done with checkpoint47 rather than with latest
3061      checkpoint47f_post since the latter is broken for the adjoint
3062      verification/carbon/ contains both ADM and TLM gradient checks.
3063    Here they are, before they get changed/lost/stolen.
3064    Mostly modif.'s to fix numerical sensitivities.
3065    Gradient checks OK for
3066    - GM_taper_scheme:
3067      * clipping
3068      * ac02
3069      * linear
3070      * glw91
3071      * dm95
3072      * ldd97
3073    - GMREDI_OPTIONS:
3074      * GM_VISBECK_VARIABLE_K
3075      * GM_NON_UNITY_DIAGONAL
3076      * GM_EXTRA_DIAGONAL
3077      * GM_BOLUS_ADVEC
3078    in conjunction with data.gmredi parameters to be checked in
3079    in a few minutes under verification/carbon/code/
3080    
3081    checkpoint47f_post
3082    Merging from release1_p10:
3083    o modifications for using pkg/exf with pkg/seaice
3084      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
3085        and SEAICE_EXTERNAL_FLUXES
3086      - pkg/exf CPP options EXF_READ_EVAP and
3087        EXF_NO_BULK_COMPUTATIONS
3088      - usage examples are Experiments 8 and 9 in
3089        verification/lab_sea/README
3090      - verification/lab_sea default experiment now uses
3091        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
3092    
3093    checkpoint47e_post
3094    o created a tag prior to creating a branch
3095    
3096    checkpoint47d_post
3097    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
3098      at the bottom boundary had an erroneous half slip boundary condition
3099    o added bottom drag and no slip boundary condition capabilities to
3100      oceanic pressure coordinates code
3101    o added new verification experiment global_ocean_pressure, this experiment is
3102      also described in the tutorial section of the manual
3103    checkpoint47d_pre
3104    
3105    checkpoint47c_post
3106    o Added a verification experiment for a global cubed-sphere ocean run
3107      -  verification/global_ocean.cubed32x32x30
3108      -  uses pkg/therm_seaice and pkg/bulk_forcing
3109    
3110    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
3111    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
3112      when using P-coordinate; only implemented for atmospheric config.
3113    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
3114      NOTES: requires option NONLIN_FRSURF to be "#define".
3115    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3116    
3117    checkpoint47b_post
3118    Merging from release1_p9:
3119    o pkg/seaice
3120      - removed GOTO's and added taf directives
3121      - double precision constants to reduce the g77 (Linux)
3122        to F77 (SGI) differences reported in release1_p8
3123    o tools/genmake
3124      - added SGI options
3125    o verification/testscript
3126      - updated to that of checkpoint47a_post
3127    o verification/global_ocean.90x40x15/input/eedata
3128      - modified for SGI f77 compatibility
3129    o verification/lab_sea
3130      - added description of sea-ice model
3131      - added missing matlab routines
3132      - added test of thermodynamics parallelization
3133    
3134    checkpoint47a_post
3135    o new pkg: aim_v23
3136     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3137       for now, keep the same surface forcing as before.
3138     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3139     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3140     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3141    o add diagnostic of surface correction term in monitor output
3142    
3143    o bulk_force and therm_seaice
3144    - Two packages:  bulk_force (Bulk forcing)
3145      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3146    - Earlier integration from Stephaine Dutkiewicz
3147      and Patrick Heimbach.
3148    - Two ifdef statements for compile time,
3149       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3150    
3151    checkpoint47
3152    differentiable version of checkpoint46n_post
3153    o bug fix in quasihydrostaticterms
3154    o * "clean" adjoint code (in terms of extensive recomputations)
3155        can now be obtained for all GMREDI options (i.e. for
3156        - GM_VISBECK_VARIABLE_K
3157        - GM_NON_UNITY_DIAGONAL
3158        - GM_EXTRA_DIAGONAL
3159        - GM_BOLUS_ADVEC )
3160      * However, wrong gradient check problem remains unsolved.
3161      * New CPP options have been introduced for different
3162        tapering schemes
3163    o external_fields_load now part of differentiation list
3164    o pressure needs multiple storing;
3165      would be nice to have store_pressure at beginning or
3166      end of forward_step, e.g. by having phiHyd global (5-dim.)
3167      (NB: pressure is needed for certain cases in find_rho,
3168      which is also invoked through convective_adjustment).
3169    o recomputations in find_rho for cases
3170     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3171    o #define ATMOSPHERIC_LOADING should be differentiable
3172    o ini_forcing shifted to begining of initialise_varia
3173    o Incorporating QNVS line search routines into MITgcm
3174      (this is separate code, and therefore not under pkg)
3175      lsopt/, optim/
3176    o Updated verification/carbon/
3177      - #define GM_VISBECK_VARIABLE_K
3178      - GM_taper_scheme    = 'ldd97'    
3179    
3180    checkpoint46n_post
3181    Merging from release1_p8:
3182    o verification/natl_box:
3183      updating new external_fields_load routine
3184    o New package: pkg/seaice
3185      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3186      The sea-ice code is based on Hibler (1979-1980).
3187      Two sea-ice dynamic solvers, ADI and LSR, are included.
3188      In addition to computing prognostic sea-ice variables and diagnosing
3189      the forcing/external data fields that drive the ocean model,
3190      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3191      The implied surface heat flux is then stored in variable
3192      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3193      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3194      non-local transport term.  Because this call precedes model
3195      thermodynamics, temperature under sea-ice may not be "exactly" at
3196      the freezing point by the time theta is dumped or time-averaged.
3197      N.B.: fairly large differences in accuracy occur across
3198            different platforms/compilers; comparison between
3199            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3200            generated output gives:
3201       T           S           U           V
3202      C D M    c        m  s        m  s        m  s        m  s
3203      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3204      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3205      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3206    
3207      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3208    o GAD:
3209      - generated new common blocks to account for call of
3210        same gad routines with differing traceridentities
3211        (needed to modify tracerIdentity indices in GAD.h)
3212      - generated separate common blocks for case useCubedSphereExchange
3213        (Department of Futurology)
3214      - parameter lists to gmredi_?transport: added tracerIdentity
3215      - added new key indices to tamc.h
3216    o external_fields_load:
3217      - added this routine to TAF list
3218      - needed to make some common blocks global and additional storing
3219        along the same lines as exf package (checkpoint_lev?_directives.h)
3220    o exf:
3221      updated external forcing package
3222      - bug fixes carried over from ecco-branch
3223        (missing OBCS_OPTIONS.h in two routines)
3224      - enable easy to use "no forcing".
3225      - added exf I/O for atmospheric loading
3226      - added exf I/O for runoff data
3227      - transfered scaling between exf <-> MITgcm to exf namelist
3228    o Adding new verification experiment global_with_exf.
3229      This verification experiment is almost identical to the
3230      global_ocean.90x40x15 experiment, except that it uses
3231      the exf (and cal) package instead of the
3232      external_fields_load routine (cf README file).
3233    
3234    checkpoint46m_post
3235    o modified testscript to return -- when there are no lines of "%MON" output
3236    o added new flag "quasiHydrostatic" for QH mode
3237      and new routine quasihydrostaticterms()
3238    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3239      New routine: mom_u_coriolis_nh()
3240    o fixed sign of non-hydrostatic metric terms in u and v equations.
3241      Depend on correct sign of gravitySign.
3242    o added work.pc* to .cvsignore in aim directories using ifc
3243    o introduced flag for controllin non-hydrostatic metric terms
3244    o removed gravitySign from PARM04
3245    o switched to g77/ifc from pgf77 in aim experiments
3246    
3247    checkpoint46l_post
3248    o made convective adjustment work with pressure coordinates:
3249     - changed the direction of k-loop in convective_adjustment.F for the
3250       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3251     - adjusted the reference pressure k-index in convective_adjustment.F
3252     - adjusted the convection condition in convect.F (in analogy to
3253       calc_ivdc.F)
3254     - convective_adjustment no longer computes anything on the halos
3255     - removed the warnings about negative salinity from find_rho.F and
3256       find_alpha.F; instead the new routine look_for_neg_salinity, called
3257       at the beginning of find_rho, find_alpha, and find_beta, does a
3258       check of the entire slice, if CPP-option
3259       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3260    checkpoint46l_pre
3261    
3262    checkpoint46k_post
3263    o fixed the verification/global_ocean.90x40x15 experiment:
3264     - new bathymetry (the world according to A., JMC, and M.)
3265     - new initial fields and forcing fields (*.bin files)
3266     - new POLY3.COEFFS (for the next release one should switch to a full
3267       equation of state: JMD95P or MDJWF)
3268     - fixed several errors and redundancies in the data file
3269     - experiment uses looped cells
3270     - added matlab directory with diagnostic scripts for plotting of output
3271    
3272    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3273     - read AIM physics parameters from a file (data.aimphys)
3274     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3275    
3276    checkpoint46j_post
3277    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3278    o move wVel computation at the end of the time step, in S/R integr_continuity
3279    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3280    o update timeave pkg for wVel diagnostic.
3281    checkpoint46j_pre
3282    
3283    checkpoint46i_post
3284    o Clean up AIM package (and keep the results unchanged):
3285      include CPP_OPTION and use IMPLICT NONE in all routines ;
3286      declare all the variables _RL ; use _d 0 for all numerical constants.
3287      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3288    
3289    checkpoint46h_post
3290    o cleaned up the use of rhoNil and rhoConst.
3291      - rhoNil should only appear in the LINEAR equation of state, everywhere
3292        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3293        and the dynamical equations are all divided by rhoConst
3294    o introduced new parameter rhoConstFresh, a reference density of fresh
3295      water, to remove the fresh water flux's dependence on rhoNil. The default
3296      value is 999.8 kg/m^3
3297    o cleanup up external_forcing.F and external_forcing_surf.F
3298      - can now be used by both OCEANIC and OCEANICP
3299    checkpoint46h_pre
3300    
3301     Added code to convert surface volume flux (fresh water) into
3302     a mass flux when using P coordinates in the ocean (OCEANICP).
3303     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3304    
3305    checkpoint46g_post
3306    o Include a new diagnostic variable phiHydLow for the ocean model
3307      - in z-coordinates, it is the bottom pressure anomaly
3308      - in p-coordinates, it is the sea surface elevation
3309      - in both cases, these variable have global drift, reflecting the mass
3310        drift in z-coordinates and the volume drift in p-coordinates
3311      - included time averaging for phiHydLow, be aware of the drift!
3312    o depth-dependent computation of Bo_surf for pressure coordinates
3313      in the ocean (buoyancyRelation='OCEANICP')
3314      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3315        Theta, Salinity, and Pressure in the parameter list. This routine is
3316        presently contained in find_rho.F. This routine does not give the
3317        correct density for 'POLY3', which would be a z-dependent reference
3318        density.
3319    o cleaned up find_rho
3320      - removed obsolete 'eqn' from the parameter list.
3321    o added two new verification experiments: gop and goz
3322      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3323    checkpoint46g_pre
3324    
3325    checkpoint46f_post
3326    o Enable tangent linear (forward mode) gradient checks:
3327      - extended active file handling to g_... files
3328      - added TANGENT_SIMULATION to theSimulationMode
3329      - extended grdchk package accordingly
3330    o added tangent linear setup in verification/carbon/code_ftl
3331    o added adjoint setup in verification/front_relax/code_ad
3332    
3333    checkpoint46e_post
3334    o Added new equation of state -> MDJWF
3335      - EOS of McDougall et al., 2002, JAOT, submitted
3336      - caveat: the equation of state is only valid for a smaller (more
3337        realistic?) range of values than JMD95P/Z and UNESCO
3338      - added masks to the calculation of pressure in store_pressure
3339      - added more check values for density in check_eos (ini_eos.F), some of
3340        the old check values are out of the range of the MDJWF-eos, so don't
3341        expect perfect matches for those
3342    checkpoint46e_pre
3343    
3344    checkpoint46d_post
3345    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3346      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3347      case of pressure coordinates. eosType='JMD95Z' in
3348      combination with buoyancyRelation='OCEANICP' now causes an error.
3349    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3350      in find_alpha/beta.
3351    checkpoint46d_pre
3352    
3353    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3354      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3355    
3356    checkpoint46c_post
3357    o Changes necessary for ocean in p-coordinates
3358     -  Added new buoyancy relation = 'OCEANICP'
3359     -  Added new parameters = gravitySign (this used to be contained inside
3360        the factor dRdZ which I added when we first switched to R coordinates).
3361     X GM/Redi is not compatible (yet)
3362     X bottom drag and no-slip need to be debugged.
3363    checkpoint46c_pre
3364    
3365    checkpoint46b_post
3366    o Added new equation of state -> JMD95Z and JMD95P
3367      - EOS of Jackett and McDougall, 1995, JAOT
3368      - moved all EOS parameters into EOS.h
3369      - new routines ini_eos.F, store_pressure.F
3370    o Added UNESCO EOS, but not recommended because it requires
3371      in-situ temperature (see JMD95)
3372    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3373      unesco.f to be used with POLY3
3374    checkpoint46b_pre
3375    
3376    checkpoint46a_post
3377    o Added (atmospheric) pressure loading
3378      - new field in FFIELDS.h, etc...
3379      - new cpp flag ATMOSPHERIC_LOADING
3380    o Changed hFacC to _hFacC in calc_phi_hyd.F
3381    o Added SHORTWAVE_HEATING to some files for consistency
3382    checkpoint46a_pre
3383    
3384    checkpoint46
3385    further merges from release1_p5
3386    o new ctrl package
3387      - adopted from ECCO environment to enable optimization
3388      - added Eliassen Palm fluxes to controls
3389    o added Eliassen Palm flux controls to gradient check package
3390    o cost package
3391      - Compatible with new ctrl package
3392      - added Eliassen Palm cost hooks
3393      - modif's of existing cost functions
3394    o Adjoint-related bug fixes in kpp:
3395      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3396      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3397    o autodiff package
3398      - flow directives:
3399        + new for S/R do_the_model_io
3400        + enhanced for S/R checkpoint
3401        + new gmredi.flow
3402      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3403        disable adcommon.h/g_common.h by default.
3404      - fixed problem for adjoint of global_max
3405    o modified verification/carbon/
3406    o New setup for adjoint of global_ocean
3407    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3408    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3409    o incorporated hooks for sponge layer code (external_forcing.F)
3410    
3411    checkpoint45d_post
3412    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3413    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3414      (affects plume_on_slope "cg2d" output)
3415    o add new parameter deltaTfreesurf for free-surface time stepping
3416    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3417    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3418    o change phiMin in exp1 (to agree with documentation)
3419    o add new flags:
3420     - T,S forcing inside/outside Adams-Bashforth
3421     - turn off temp,salt advection and/or forcing
3422     - for each tracer, define internal flag for multiDimAdvection & A-B
3423    o monitor: change definition of KE to check conservation of Energy
3424    
3425    checkpoint45c_post
3426    o Removed f90 comments ("!")
3427    o Modified initialisations to enable exf package for MITgcm
3428      (without invoking ECCO_PACKAGE).
3429    o modifications to gradient check package (Martin Losch)
3430      - enable centered differences
3431      - modified format of standard output
3432    
3433    checkpoint45b_post
3434    o cleaned exchange calls in cg2d
3435    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
3436    o included CPP option SINGLE_LAYER_MODE in thermodynamics
3437      to configure barotropic setup (Martin Losch)
3438    o moved some initialisations within bi,bj loop in dynamics
3439      (TAF flow dependency)
3440    o in initialise_varia, moved call packages_init_variables
3441      before convective_adjustment_init
3442      (corresponding adjustment of TAF tape initialisation).
3443    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
3444    
3445    checkpoint45a_post
3446    o compute Rho over the whole domain (extend iMin,jMin indices)
3447    o specific exchange for X-slice domain (case Ny=1)
3448    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
3449    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
3450    
3451    checkpoint44h_post = checkpoint45
3452    o Fix to restore differentiability:
3453      place at which packages_init_variables is called in
3454      initialise_varia is crucial for reverse control flow.
3455    o modifications in GMRedi to enable stable adjoint
3456      (corresponding modif's in thermodynamics, dynamics)
3457    o added missing hook for sponge layer code in external_forcing
3458    o modified test cost functions
3459    o storing in gad_advection (plus removal of write(0,*)!
3460    o missing headers TR1.h added in convective_adjustment routines
3461    o errorMessageUnit set non-equal zero in eeboot
3462      (conflict on some platforms, e.g. IBM SP3)
3463    o modified carbon verif.
3464    
3465    checkpoint44h_pre
3466    o vertical grid option: allow to put the Interface at the middle between
3467      2 cell-centers ; replace delZ in pkg/kpp by drF.
3468    o GM Advective form: Tracers are advected using the residual transport (=
3469      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
3470    
3471    checkpoint44g_post
3472    o fix surface correction term in multiDimAdvection (affects plume_on_slope
3473      results) ; ifdef missing in thermodynamics.F
3474    
3475    checkpoint44f_pre,checkpoint44f_post
3476    o added PTRACERS package
3477      This allows an arbitrary number of passive tracers to be integrated
3478      forward simultaneously with the dynamicaly model.
3479      + Implemented so far:
3480        - basic forward algorithm (time-stepping, advection, diffusion, convection)
3481        - I/O and checkpointing
3482        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
3483      + Not implemented so far:
3484        - KPP
3485        - OBCS
3486      + No specific example supplied (yet) but global_ocean.90x40x15 has the
3487        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
3488        line in data.pkg.
3489      + This package is disabled by default since it increases storage.
3490    
3491    
3492    o testscript: added -cleanup option
3493    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
3494                 b) enable to filter 2D fields.
3495    
3496    checkpoint44e_pre,post
3497    o re-wrote convective adjustment to use pre-calculated weights
3498      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
3499      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
3500      Original calls to convect() still in place.
3501    
3502    chkpt44d_pre,post
3503    o added missing EXCLUDE_MONITOR flags
3504    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
3505      (incompatible typ in MIN/MAX expressions caused problems
3506      on IBM SP3)
3507    o in genmake added variable MAKEDEPEND
3508      plus resetting for case SunOS
3509    o added timer_stats.c routine for IBM SP3
3510    o removed variables in dynamics
3511    !!! I forgot to create tag chkpt44d_pre !!!
3512    !!! But chkpt44d_pre = chkpt44c_post    !!!
3513    
3514    o real fresh water flux implemented with non-linear free-surface.
3515    
3516    chkpt44c_pre,post
3517    o few fix (mask in shap_s2, EmPmR in external_field_load,
3518      USE_NATURAL_BCS in solve_for_P);
3519    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
3520    
3521    checkpoint44b_pre/_post
3522    o merge of relevant stuff from the ecco-branch:
3523      - genmake: removed $S64 overwrite for case SunOS
3524      - pkg/exf: update and corrections for field swapping and obcs
3525      - pkg/ecco: parameter lists for the_model_main, the_main_loop
3526                  harmonized between ECCO and MITgcm
3527      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
3528                      updated checkpointing_lev... lists for obcs
3529      - model/src: minor changes in forward_step, plot_field
3530                   added directive for divided adjoint in the_main_loop
3531      - pkg/mdsio: added mdsio_gl_slice
3532    
3533    o check parameters & config (chkpt44a_pre,post)
3534    o OBC and NonLin_FrSurf.
3535    
3536    checkpoint44
3537    o fix bug in mom_vi_del2uv
3538    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
3539    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
3540    o update AIM experiments (NCEP input files)
3541    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
3542    o added some stuff for AD
3543    
3544    checkpoint43
3545    o added two new advection tests
3546    o added global 4x4 degree ocean test
3547    o added test of H&S94 with free surface on cube
3548    o some final mods for gradient check, adjoint,...
3549    
3550    checkpoint42
3551      Fixed AD-related problems:
3552    o Store directives up-to-date with re-arranged Adams-Bashforth
3553      (mainly thermodynamics.F)
3554    o New store directives for multi-dim. advection schemes
3555      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
3556      * new common block and key passkey
3557      (mainly gad_advection.F)
3558    o Modified store directives for split of dynamics/thermodynamics
3559      for the case ALLOW_KPP
3560    o Cleaned argument list for timestep_tracer.F
3561    
3562    checkpoint41
3563    o re-formatted/added comments in prologues of key subroutines
3564      to work with protex
3565    
3566    checkpoint40
3567    o moved calc_gs, calc_gt and calc_tr1 back to model/src
3568    o added FLT (floats) package from Arne along with demo. experiment
3569    o re-arranged Adams-Bashforth scheme for tracers to allow easier
3570      implementation of forward-in-time forcing terms
3571    o more mods for non-linear free-surface including new variable
3572    o modified multi-dim method to work on cube
3573    o bug fix in KPP (from DM)
3574    
3575    checkpoint40pre9
3576    o added DST advection schemes
3577    o fix MPI bug on SGI's
3578    o modifications for non-linear free-surface
3579    o fixed conditionals for fixed flow/passive tracer only mode
3580    o added tension/strain form of stress tensor
3581    o changes to commenting of arguments for TAF/TAMC
3582    o added/updated many matlab scripts
3583    o added multi-dimensional advection method for tracers
3584      
3585    checkpoint40pre8
3586    o new package rw/
3587      Added method for dumping intermediate local arrays:
3588      mdsio_writetile - same as mdsio_writefield except works from inside
3589                        bi,bj loop
3590      mdsio_writelocal - same as mdsio_writetile except works for local
3591                         arrays
3592      write_local_r? - higher-level wrapper for mdsio_writelocal
3593      Controlled by diagFreq. Defaults to zero (ie. no dumps)
3594      Example given at end of mom_vecinv.F that dumps some local arrays.
3595    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
3596      control flux-form versus vector invariant code.
3597      Switch is runtime flag vectorInvariantMomentum (defaults to false)
3598      or genmake -DISABLE ...
3599    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
3600      (additional storing is now needed for case vecinv;
3601      currently nothing implemented to switch this storing off
3602      in case fluxform is used since no CPP flag available).
3603    
3604    checkpoint40pre7
3605    o bug fix in dynamics.F
3606      calc_viscosity called before k=1,Nr loop.
3607    o added some #ifdef's ALLOW_PASSIVE_TRACER
3608    o cleaned initialisations in ctrl_map_ini
3609      related to TAF
3610    
3611    checkpoint40pre6
3612    o split dynamics into thermodynamics & dynamics
3613    o corresponding split of calc_diffusivity into
3614      calc_diffusivity, calc_viscosity
3615      (kpp_calc_diff, kpp_calc_visc).
3616    o Added diffkr, kapgm to control variables
3617    o bug fix in gmredi_slope_limit for ldd97
3618    
3619    checkpoint40pre5
3620    o proper initialization of Adams-Bashforth time stepping
3621      + uses forward step for very first step of model (iter=0)
3622    o re-generated *all* output since almost all output is modified by this
3623      change (sorry but we've been putting this one off for about 2 years)
3624      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
3625        *not* regenerated since they are already out of date and I don't
3626        want to create the impression that they are suddenly working.
3627    o removed KAP stuff for DEC's
3628    o modified/added many .cvsignore files in */code and */input
3629    o added new expt "solid-body.cs-32x32x1"
3630      + this uses an alternative form of ini_curvilinear_grid.F which
3631        is not necessarily any better than the current one...
3632    
3633    checkpoint40pre4
3634    o added re-initialisations of utrans,vtrans,rtrans in
3635      calc_common_factors which are crucial for TAF.
3636    o extended iMin,jMin range for calc_common_factors,
3637      calc_diffusivity
3638    o added option ALLOW_PASSIVE_TRACER
3639    o a few minor updates and fixes
3640    
3641    checkpoint40pre3
3642    o created calc_gtr1.F for gad package
3643    o split the_main_loop and re-introduced forward_step
3644    o some recomputations of nIter0 for TAMC
3645    
3646    checkpoint40pre2
3647    o Updated to latest branch of AJA, JMC
3648    o Added gradient check package
3649    o Added routines for passive tracer handling
3650    o Added carbon sequestration sensitivity experiment
3651    
3652    checkpoint39
3653     o Modifications and fixes to support TAMC
3654       (mainly missing or wrong directives)
3655     o Corrected common blocks when fooling TAMC to produce adjoint I/O
3656       in addummy_in_stepping
3657     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
3658     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
3659     o Included following packages:
3660       cal: calendar
3661       exf: external forcing
3662       ecco: essential routines to control use of cal, exf
3663             (NB: this is not the full ECCO environment)
3664     o disabled some packages by default in genmake
3665    
3666    checkpoint38
3667     o see notes_c37_adj.txt
3668     o corrected wrong layer index in external_forcing_t
3669     o replaced the_main_loop/forward_step by the_main_loop
3670     o removed forceoutput from write_state
3671       (replaced criteria for initial/final state)
3672     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
3673    
3674    checkpoint37
3675     o mdsio.F routine split and packaged in pkg/mdsio
3676       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
3677        used unless genmake -disable=mdsio)
3678     o allow a more precise surface-geopotential gradient for the atmosphere
3679       taking into account the change in space of Alpha (=1/rho) at the surface.
3680     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
3681       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
3682     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
3683       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
3684       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
3685     o Time-Average diagnostics defined as a pseudo package "timeave".
3686     o pickup files : old pickup (before c35) did not work with new code (c35
3687       and after) unless activating 2 commented lines in initialise-varia.
3688     o Non-Hydrostatic pickup file Pb fixed.
3689     o bug with Rigid-lid version (since c35) fixed.  
3690    
3691    checkpoint36
3692     o implement Crank-Nickelson barotropic time-stepping
3693     o recover Time-Average diagnostics
3694     o fix Pb in checkpoint (PR#19)
3695     o AIM become a standard package ; clean unused CPP_kees
3696    
3697    checkpoint35
3698     o subtantial rewrite of dynamics.f
3699     o allows staggered time-stepping
3700     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
3701     o added bottom drag (linear + quadratic)
3702    
3703    checkpoint34
3704     o Modified exchange routines for correct reverse simulation.
3705     o Added verification output to comply with bug fix in impldiff.F
3706       as of c33 (exp2, natl_box).
3707     o Corrected store directives in dynamics.F
3708     o Corrected array boundaries in impldiff.F
3709     o Corrected array dimensions in gmredi.
3710       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
3711     o Added routine GLOBAL_SUM_INT to global_sum.F
3712     o Added mdsio_gl.F for ECCO purposes.
3713    
3714    checkpoint33
3715     o Fixed bug in lower BC in impldiff.F
3716     o Fixed confusion about units of forcing arrays in FFIELDS.h
3717       namely Fu,Fv,Qnet,Qsw,EmPmR:
3718       - Removed verification/natl_box/code/external_fields_scale.F
3719         (did not differ from that in model/src)
3720       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
3721         (see FFIELDS.h for description)
3722       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
3723         kpp_calc.F and kpp_transport_t.F
3724       - Removed model/src/external_fields_scale.F and calls to it
3725       - verification/natl_box uses flux data with "atmospheric" sign so
3726         a special version of external_fields_load.F is used to
3727         change the data as it's read in. This way, the arrays
3728         have the right units and signs at all times tha a user could
3729         possibly use them.
3730     o Corrected genmake to delete a temporary file during configuration
3731    
3732    checkpoint32
3733     o Scaling of forcing fields moved from external_forcing.F to
3734       external_fields_scale.F, called directly after loading fields.
3735     o Surface relaxation terms added to surface tendency fields in
3736       extra subroutine.
3737     o impldiff.F changed to avoid storing by TAMC of huge intermediate
3738       fields.
3739     o Changes in GMRedi to comply with packaging structure.
3740     o Modifications and bug fixes in KPP package.
3741     o Verification experiment for KPP added (verification/nat_box/)
3742    
3743    checkpoint31
3744     o Packages interface brought in line with defined standard
3745       -> new routines packages_...F
3746       -> changes in initialise_fixed.F, initialise_varia.F
3747       -> enables initialisation interface for ECCO package
3748     o Rescaling of external forcing fields immediately after read
3749       (removed from external_forcing.F)
3750       -> new: surface_fields_scale.F
3751       -> affects ini_foorcing.F, external_fields_load.F
3752     o Computation of surface tendencies before tendency updates.
3753       -> new: external_forcing_surf.F
3754     o Change of variable names useGMRedi, useKPP, useECCO
3755     o Further changes in dynamics.F, impldiff.F for TAMC
3756     o Tested for experiments 0, 2, 4.
3757       - not yet tested for GMRedi.
3758       - not yet tested for KPP.
3759    
3760    checkpoint30
3761     o Updates for OBCs
3762     o New experiment for test OBCs (internal_wave)
3763     o New output.txt in verification/exp4/results/
3764     o Updates for KPP: calculation of viscosity corrected, new variables
3765       kpp_dumpFreq and kpp_taveFreq
3766     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
3767       and entry for T90 in genmake
3768    
3769    checkpoint29
3770     o packaged KPP and GM/Redi
3771    
3772    checkpoint28
3773     o Corrected initialization of hFacMin for difference vertical coordinates
3774     o Modified calculation of partial cell thickness to more robust algorithm
3775     o config_summary.F: replaced write_1D_... by write_0D_...
3776       read_write.F: added subroutines write_0D_...
3777     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
3778       included some initialisations required for TAMC.
3779     o routine calc_isoslopes: modified sqrt computation to make it
3780       differentiable for zero argument.
3781     o routines dynamics, impldiff:
3782       included store directives and tape key computations required for TAMC.
3783     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
3784    
3785  checkpoint27  checkpoint27
3786   o fixed calc_isoslopes() to so that cancellation of terms in tensor   o fixed calc_isoslopes() to so that cancellation of terms in tensor
3787     formulation works properly with variable resolution.     formulation works properly with variable resolution.

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