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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.984 by gforget, Tue Apr 29 21:43:54 2008 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7  o adding precip control xx_precip  o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
8  o moved ptracer ctrl index 17 -> 32  o pkg/obcs: change default to OBCSfixTopo = .true.,
9      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
10      - replace "debugMode" with "debugLevel .GE. debLevB"
11    o implementation of TAF directives for gchem,cfc,dic
12    o remove "exp5" (replaced by tutorial_deep_convection).
13    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
14      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
15      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
16      --> changes results in exp4, seaice_obcs
17    o tutorial_deep_convection :
18      update the set-up and increase resolution and domain size ; start
19      from pseudo initial conditions = output at t=120mn in order to see
20      something happening when running testreport.
21    o pkg/seaice: add os7mp as an advection scheme
22                  add check for advection schemes
23                  add a flag for restoring T and S underneath sea ice
24    o pkg/my82: add netcdf-support and diagnostics
25    o thsice pkg:
26      - Now hsMax limits snow height by turning it into ice following
27        flooding scheme (and now conserving energy)
28      - Slight rewriting of the formula in thsice_calc_thick.F
29      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
30      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
31    
32    checkpoint59p
33    o gchem / dic / cfc :
34      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
35      - add new parameter files: "data.dic" & "data.cfc" ;
36      - various re-arrangement in initialisation & header file ;
37      - fix tutorial_global_oce_biogeo for multi-threaded test.
38    o pkg/dic: test for "pickup_dic" file when restarting ;
39      if no pickup-file, can restart with a re-initialised pH (same as it did
40      before) providing pickupStrictlyMatch is set to False.
41    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
42      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
43    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
44      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
45    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
46     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
47       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
48    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
49       scheme to use for vorticty-term ;
50     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
51       (with default selectVortScheme, return to original discretisation)
52     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
53    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
54    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
55      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
56      also fix diagnostics VISCAHW & VISCA4W.
57    
58    checkpoint59o
59    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
60    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
61      move a few statemens out the main loop into separate loops
62    o pkg/shelfice:
63      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
64        (kg/m^2/s), does not break tests, because in verification/isomip,
65        rhoConstFresh=rhoConst (by accident)
66      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
67      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
68        new file model/src/seawater.F, so that they are available for all pkgs.
69      - convert potential temperature into in-situ temperature. This changes the
70        isomip tests => update tests
71    o add a flag writePickupAtEnd (default=true) to be able to suppress
72      writing a pickup at the last timestep
73    o tools/mpack-1.6 :
74      - disable automake (not working) and autoconf (not needed).
75      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
76        also cleaner with much less compilation warnings.
77    o pkg/profiles:
78      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
79      (for "less than 32 characters name" compiler requirement)
80    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
81      conditions that have a different sampling frequency than S/T/U/V obcs
82    o pkg/diagnostics (stats-diags):
83      - fix global Min/Max in case 1 processor get only empty tiles
84    o genmake2: replace (4 times)
85         make genmake_tc_1.o >> genmake_warnings 2>&1
86      with
87         COMM="$CC $CFLAGS -c genmake_tc_1.c"
88         echo $COMM >> genmake_warnings
89         $COMM >> genmake_warnings 2>&1
90      to make genmake2 always see the value of CC as specified in the optfile.
91    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
92      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
93      - modify verification advect_cs test to test SOM-advection on CS-grid.
94    o pkg/ctrl:
95      - Rewrite of ctrl_map_ini_ecco.F,
96        introducing a generic routine (ctrl_map_ini_gen.F).
97      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
98    
99    checkpoint59n
100    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
101      number in dedicate array "hdiag":
102      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
103        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
104      - many small changes (integer format) for large number of diagnostics
105      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
106        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
107    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
108      usingSphericalGrid, this allows to define the rotated grid coordinates
109      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
110      geographical coordinates according to the inverse of the rotation defined
111      by the Euler angles, so that Coriolis parameter and online-interpolation by
112      exf works with the geographical coordinates on XC/YC/XG/YG.
113      Naturally, this feature does not work with all packages, so some
114      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
115      profiles), because there the coordinates are assumed to be regular
116      spherical grid coordinates.
117    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
118      - introduce isopycnal diffusion coefficient control.
119    o tools/adjoint_options:
120      - additional control vector components.
121    o pkg/mnc: have mnc create marginally meaning full coordinate variables
122      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
123    o pkg/mypackage:
124      - add example of read/write pickup for state-var ;
125      - add entry points to the main code for state-vars diags & write-pickup.
126    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
127      transitions for useExfYearlyFields
128      - add new subroutine that determines the file to read from for
129        use*YearlyFields = .TRUE. and .FALSE.
130      - add a verification experiment to global_with_exf that tests
131        useExfYearlyFields with USE_EXF_INTERPOLATION defined
132    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
133      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
134      subroutines (which could be generated from a template, because they are
135      almost identical), for now they are included in obcs_prescribe_read.F for
136      simplicity
137    o pkg/exf:
138      - add a little more diagnostic to exf_interp_read (in analogy to
139        mds_read_field, can be turned off with debugLevel < debugLevA=1)
140      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
141        ugly but fast by unrolling short inner loops, inserting a unroll=8
142        directive in routine lagran, and splitting a loop and making do while the
143        outermost loop (the latter requires the intoduction of index arrays)
144    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
145    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
146      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
147    o verification/seaice_obcs: updated for restart test and latest options
148    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
149      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
150      for now this is only available for the C-grid code and also within
151      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
152    
153    checkpoint59m
154    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
155      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
156    o gad_som : fix flux output (& diagnostics) to have same units as other  
157      advection scheme fluxes (was previously multiplied by deltaT).  
158    o added verification/seaice_obcs both to test seaice open boundaries
159      and to provide an example matlab scrpt for generating them
160    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
161    o pkg/salt_plume: clean up salt_plume_frac.F to
162      remove redundancy in PlumeMethod 1 and 4
163    o pkg/kpp: added saltplume diagnostics
164    o pkg/obcs and pkg/seaice:
165      - do not set uice and vice to zero when OB*icefile are unspecified
166      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
167      - moved seaice tracer obcs after call to seaice_growth
168    o pkg/salt_plume: added various options for salt plume depth
169      criterion and for vertical distribution of the salt
170    
171    checkpoint59l
172    o pkg/ptracers: new version of ptracers pickup:
173      read meta file and write only fields which are needed to restart.
174      ( same logic as main pickup file ; also using pickupStrictlyMatch )
175    o pkg/seaice:
176      - add timescale for melting due to warm mixed layer as a means of
177        setting SEAICE_availHeatFrac more conveniently
178      - add a CPP-flag/runtime parameter check for flooding algorithm
179      - reformulated availHeat in seaice_growth.F to be independent of AREA
180    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
181      unit changes
182    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
183    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
184      SX vector computer.
185    o pkg/seaice:
186      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
187        seaice forcing fields can now be read only through pkg/exf
188      - removed some unused halos
189    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
190    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
191      or U/VICE from U/VWIND before computing U/VSTRESS
192    
193    checkpoint59k
194    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
195      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
196    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
197      all experiments pass when compile with un-initialised var. checking option.
198    o added pkg/salt_plume
199    o script to test restart (for now, in MITgcm_contrib/jmc_script)
200    o pkg/seaice: new read/write pickup version.
201      read meta file and write only fields which are needed to restart.
202      ( same logic as main pickup file ; also using pickupStrictlyMatch )
203    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
204    o lab_sea.hb87: modify the domain & update output.hb87.txt :
205      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
206      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
207      process. Fixed here by closing the domain at the Northern boundary.
208    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
209    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
210      a set of consecutive levels in/from a 3-D array.
211    o pkg/ptracers:
212      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
213      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
214    
215    checkpoint59j
216    o in pkgs: dic, obcs, offline, rbcs:
217      standard way to compute coeff. for time interpolation between 2 time reccords
218      which retains full precision (& make results less dependent on compiler).
219      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
220    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
221      packages instead of reading ice cover and wind speed separately
222    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
223     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
224      to allow to compile customized code before the update)
225    o cleaning-up:
226      - fix CPP instruction syntax in pkg/obcs
227      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
228        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
229      - fix some threads issue in IO parts.
230    o pkg/dic:
231      - add tons of "_d 0" (--> much better testreports !)
232       and then update outputs of tutorial_global_oce_biogeo
233    o pkg/mom_fluxform:
234      add a special version of momentum advection intended to conserve momentum
235      next to a bathymetry step or a coastline edge. (default = off = #undef)
236    o new read/write pickup version:
237      - for now, only implemented for main (mdsio) pickup file.
238      - write out only what is needed to restart; merge pickup_nh , pickup_ph
239        and main pickup together.
240      - read meta file; read only what is needed to restart; stop if a field
241        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
242        if it make sense (even if the restart is not perfect).
243      - if no meta file, assume that pickup to read corresponds exactly to
244        a pickup that would currently be written.
245      - read pickup written in the old format (until checkpoint59i) if it
246        recognizes an old meta file (no field-list).
247      - add a meta file in exp. which starts from a pickup: 2 cases:
248        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
249         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
250        b) a meta file describing the content of the associated pickup file
251         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
252    o pkg/mdsio & pkg/rw:
253      - new routine to read a meta file ; new set of routine to read
254        Multiple-fields file (with meta file).
255    o added open boundary conditions capability for seaice
256        HSNOW, HSALT, UICE, and VICE
257    
258    checkpoint59i
259    o adjoint:
260      * fix multiDimAdvection adjoint
261        (partial recomputation problem by TAF for fVerT(:,:,kDown)
262        and comlev1 size definition (maxpass vs. max. number of tracers)
263      * verification/global_ocean.90x45x15 adjoint now tests
264        NLFS and multiDimAdvection using DST3 (=30)
265      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
266    o pkg/kpp: add "_d 0" to real constant (if missing);
267      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
268      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
269    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
270      for internal parameters related to restart process (formerly from PARAMS.h)
271      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
272    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
273      as argument. (only atm2d & obcs write_pickup have not yet been updated)
274    o pkg/monitor:
275      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
276      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
277      - account for deep Atmosphere factor and density factor (anelastic)
278    o added open boundary conditions capability for seaice HEFF and AREA
279    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
280      thermodynamics
281      - requires a little reorganization, which affects the testreport results
282        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
283        so that now the conservative form is tested
284      - add a few comments
285    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
286    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
287    o add new diagnostics to seaice: advective, diffusive fluxes (only for
288      multidim-advection, for scheme 2 they are not filled) and transports,
289      thermodynamic growth rates
290    o change units of EmPmR (inside the code, + within coupling interface)
291      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
292      Affects results @ truncation level (cg2d match) and update output of
293       experiments: lab_sea(6), global_ocean.90x40x15(10),
294      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
295      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
296      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
297      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
298    
299    checkpoint59h
300    o pkg/exf:
301      - improve vectorization by moving if-statement out of loops in
302        exf_mapfields, exf_radiation
303      - exf_bulkformulae.F: introduce 2D fields and vectorize code
304    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
305    o testreport:
306      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
307        monitor & update offline_exf_seaice exp. output.
308      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
309    o pkg/seaice:
310      - bug fix in the evp solver: boundary conditions were affected be
311        masking of zMax/zMin (changes results)
312      - minor bug fix in boundary conditions in seaice_calc_strainrates
313        (changes results for no_slip)
314      - seaice_lsr.F: make interpolation of eta dependent on boundaries
315      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
316      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
317        stress formulation and no-slip boundary conditions
318    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
319      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
320    o pkg/seaice: a first HSALT time stepping equation has been checked in
321    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
322      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
323      without requiring DO-IF statements
324    o pkg/thsice:
325      use continuous power-law function for partition of energy between lateral
326      melting/freezing and thinning/thickening ; old code using step function
327      still available with #undef THSICE_FRACEN_POWERLAW
328      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
329    o testreport: change AD testing : check against results/output_adm.txt
330      using same scripts as for forward test.
331    
332    checkpoint59g
333    o adjoint testing: in preparation for changing testreport:
334      - output format: cost and grad written on separated lines
335      - ad output results in directory "results" (instead of "results_ad")
336    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
337    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
338    o pkg/ecco: allow user defined cost function contributions
339    o testreport:
340      Allow to choose (per experiment) the list of tested output variables
341       and the main variable (used to issue a pass/FAIL ) ;
342      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
343      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
344      Also modify printing of summary:
345       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
346       b) echo the list of tested variables in the individual summary.txt of
347          each experiment.
348    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
349      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
350      (but still depend on the tile decompostion of the domain).
351    o pkg/seaice: change a discretization detail to make the B-grid code
352      "more symmetric". This change is likely to remove all "ridges/leads" that
353      where quasi-aligned with the grid in B-grid solutions. It may also be
354      the solution to the stress coupling issues with the B-grid.
355    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
356      remove .cvsignore from input dir. (since testreport no longer run here).
357    o pkg/thsice:
358     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
359     - fix reshaping of sea-ice just after advection:
360       melt all the ice only if ice-volume is too small.
361     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
362       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
363     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
364    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
365      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
366    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
367      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
368      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
369      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
370      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
371      -> update output.txt
372    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
373     this affects truncation error: -> update output.txt of exp:
374      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
375      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
376    
377    checkpoint59f
378    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
379    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
380      a bounded range (in forward mode)
381    o pkg/ecco, ctrl, autodiff and mom_common:
382     internal parameter controls, completements of implementations
383    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
384    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
385      (not seem any difference in testing results).
386    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
387       at face corners.
388    o pkg/generic_advdiff:
389     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
390      loop range indices for computing vertical advection tendency
391      and do the calculation in the interior only (no overlap) ;
392      for now, only implemented for SOM advection (to save CPU time).
393     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
394    o exch2 adjoint
395      First set of changes:
396      - add exch2 hand-written adjoint templates
397      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
398        This will require cleanup in pkg/autodiff/*.F
399        (changed routines currently kept separate in verif. code/)
400      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
401        that used to hide exch2 or cubed-sphere specific code
402        (commented via 'cph-exch2')
403    o pkg/seaice
404      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
405    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
406       output of global_ocean.cs32x15.thsice .
407    
408    checkpoint59e
409    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
410      for B-grid vector (not yet tested) and C-grid vector (<- only used
411      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
412    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
413      (#ifdef ALLOW_SALT_PLUME)
414    o gather_2d/scatter_2d: removed halo regions
415    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
416      scheme and the corresponding test case (under front_relax dir). For now,
417      only available with Skew-flux form and not yet tested in realistic set-up.
418      adjoint: store directives updated, but gradient checks deteriorated,
419      so maybe GM/Redi adjoint is now broken.
420    o seaice adjoint
421      * add AREA, HEFF, HSNOW as control variable
422        (should not change lab_sea results)
423      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
424    o pkg/seaice:
425      * added computation of saltFlux in seaice_growth;
426        For time being, sea ice salinity is assumed constant
427        contribution of snow flooding to freshening of sea ice is neglected.
428        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
429        defaults to 0.0 in order to maintain backward compatibility.
430        Typical values for SEAICE_salinity are 4 to 10 g/kg.
431      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
432      * added SEAICE_availHeatFrac, which specifies fraction of surface level
433        heat content used to melt or grow ice
434      * commented out cap of HICE: it helps keep ice thinner
435      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
436      * applied OBCS T/S mask to HEFFM sea ice mask
437    
438    checkpoint59d
439    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
440     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
441     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
442    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
443     and change default value of parameter "GM_Small_Number";
444     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
445       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
446       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
447    o pkg/ecco: cost function when applying pkg/smooth to controls
448    o pkg/ctrl: add forcingPrecond run time parameter
449    o pkg/seaice:
450     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
451     - fix bug in metric terms of u-equation in LSR solver (implicit part),
452       changes verification/lab_sea
453     - rearrange implicit part of u-equation in LSR solver to make it easier to
454       read, understand, and debug. This causes changes at the truncation level.
455     - fix (serious) bug in the boundary conditions (sign error in the implicit
456       part) of the LSR solver. Changes all LSR results.
457     - fixed problem with HSNOW initialization to avoid thick snow when AREA
458       is initilized with small values - does not change lab_sea results.
459     - added HsnowFile initialization capability
460    o pkg/smooth: addition to model/src and pkg/ctrl so allow
461     initialization of pkg/smooth and application to control vector
462    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
463    o dependencies: pkg/profiles requires pkg/cal
464    o pkg/profiles:
465     - added option ALLOW_PROFILES_GENERICGRID
466         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
467         that interpolation information (grid points and coefficients) is provided
468         within the netcdf input files.
469         -> sample matlab scripts can be found in MITgcm_contrib/gael
470         that allow you to prepare netcdf input files.
471     - also modified: cleaner include statements, cleaner error print statements,
472       cleaner stops when error, and more tests of the netcdf input files consistency.
473    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
474    o pkg/seaice:
475     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
476       requires a new routine: seaice_diagnostics_fill.F
477     - make sure that seaice does not move if not forced (pressure replacement
478       method, Hibler and Ip, 1995), changes results
479     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
480     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
481       It is turned off by default (=-1.), because it changes the results.
482     - make it possible to read AREA from a file, too.
483    
484    checkpoint59c
485    o add S/R and diagnostics for oceanic mixed-layer depth
486    o move GMRedi call after all vertical mixing schemes (including KPP)
487    o pkg/thsice:
488     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
489      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
490    o pkg/obcs:
491     - bug fix for balance code
492    o pkg/seaice:
493      - allow values of SEAICE_elasticParm > 1
494      - add new parameter SEAICE_evpTauRelax as an alternative
495        to SEAICE_elasticParm
496      - make lsr boundary conditions free slip (by default), changes result
497      - add code for no slip boundary conditions for lsr
498      - set minimum of zeta to zero (and not 4e8) (changes results)
499      - add a cap on AREA after advecting AREA if seaice_growth is not called
500    o change calculation of Visbeck K:
501      - no longer depend on tapering scheme; instead, compute slope (limited
502        by GM_maxSlope). this is equivalent to what was comuted before with
503        clipping or linear tappering.
504      - fix vertical averaging (wrong by 1/2 level)
505      - leave the old version (but will not be maintained) within
506        #ifdef OLD_VISBECK_CALC / #endif
507      - update output of exp. ideal_2D_oce
508    o change error catch in calc_r_star to improve vectorization
509    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
510      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
511    o adjoint:
512      Re-organized adjoint checkpointing according to Matt Mazloff
513      (but with modifs/completions/cleanups)
514      Storing is now bundled into large arrays to optimized I/O
515      (and second step in cleanup of the_main_loop)
516    
517    checkpoint59b
518    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
519      - export/import (between ocean & coupler) fields needed for ocean DIC.
520    o pkg/seaice:
521      - get rid of three more exchanges seaice_calc_viscosities (required
522        different loop boundaries in seaice_lsr and seaice_ocean_stress)
523      - bug fix in seaice_ocean_stress (update of lab_sea required)
524      - reduce loop boundaries to necessary minimum also in seaice_evp
525      - go back to the old way of computing deltaC/Z as the adjoint likes that
526        better
527    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
528      passive tracer to an Age Tracer) + update output.txt
529    o pkg/exf:
530      - implement A-grid / C-grid selection for wind-stress input files.
531      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
532      for now, in exf_bulk_largeyeager04.F only :
533      - change implementation for case where windspeed + 2. components wind-stress
534        are read-in. AND use rhoConstFresh to convert evap.
535    o pkg/seaice:
536      - use correct EXCH_UV for wind-forcing (on A-grid).
537      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
538        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
539    o pkg/exf:
540      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
541      EXF_INTERPOLATION:
542      - merge global_with_exf/code version of exf_interp_read.F
543        to the main code ;
544      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
545        reading the file ; Important: This options needs to be defined to recover
546        previous code.
547        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
548      - no longer loose real*8 precision along the way when using exf_iprec=64.
549    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
550      - change discretisation of evp-solver in order to avoid another exchange
551        (changes lab_sea) and clean up a little
552      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
553        help the adjoint (this also changes the results slightly)
554      - add a few "_d 0" where they had been missing in seaice_evp.F
555      - cleaning up: remove unused seaice_calc_rhs.F
556    o pkg/exf: some cleaning-up:
557      - change various "constants" into runtime parameters
558      - cleaned-up Large&Yeager04 routine which should eventually
559        replace exf_bulkformulae.F (changed names of S/R and CPP)
560        and merged various ALLOW_ATM_WIND options
561     only used with thsice pkg (in thsice_get_exf.F):
562      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
563        which are used when useStabilityFct_overIce=TRUE (= the default)
564      - change default values of ice & snow emissivity and scale downward LW
565        by ice & snow emissivity.
566    o pkg/thsice:
567     fix few little problems, in thsice_calc_thickn.F:
568      - growth vertically (and not laterally) if iceFrac == iceMaskMax
569      - melt only laterally if hIce < hThinIce (as the comments say)
570      and in thsice_extend.F:
571      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
572      - start to form ice as soon as the minimum ice-volume is reachable.
573     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
574      and cpl_aim+ocn
575    o pkg/kpp
576     - move computation of surface related input fields to KPP into a new
577       subroutine kpp_forcing_surf.F
578     - remove wrong (within bi,bj loops) EXCH calls.
579     - little cleaning (add argument myThid in last position, cvs header ...)
580     - for now, fix conservation problem by exchanging KPPviscAz (may not
581       be the best fix)
582    o pkg/seaice
583     - check for inconsistent evp parameter/cpp-flag combination
584     - remove leftover errIO flat for obsolete name list error handling
585    o OpenAD
586     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
587    
588    checkpoint59a
589    o pkg/seaice: some parameter clarifications and a little bit of clean up
590    o pkg/thsice: rename run-time parameters:
591       himin       -> hIceMin
592       himin0      -> hThinIce
593       hihig       -> hThickIce
594       i0          -> i0swFrac
595       transCoef   -> bMeltCoef
596       frac_energy -> fracMelting
597      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
598       with default values (for now) that do not change the results.
599      remove old version of thsice vars advection in pkg/seaice.
600    o in FFIELDS.h:
601      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
602      - make pLoad & sIceLoad always available (but still only used if
603         ATMOSPHERIC_LOADING is #define).
604    o pkg/kpp: replaced _KPP_RL with _RL
605    o bug fixes for vertical diffusivity computations when both KPP and
606        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
607        are no longer updating the vertical diffusivity array
608        (passed as argument) but are (re-) setting those arrays.
609    o pkg/seaice: fix bug in evp solver, while doing that
610      - change (improve?) discretization of stress computations for both
611        cgrid-lsr and evp solver
612      - add a new routine to compute strain rates
613      - the above changes lab_sea results
614      - add no slip conditions for evp solver (off by default), lsr-version
615        may follow
616      - fix exchange for shear at Z-points (does not change lab_sea)
617      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
618        (to force the user to pick a time step since there is not "safe" way
619        of choosing it)
620      - add principal stress diagnostics
621      - rearrange fields for evp a little to avoid having to call a: too many
622        exchanges and b: exchanges for stress trensor components which we do
623        not have.
624      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
625        of evp, complete rewrite for lsr case (latter is does not yet work
626        in all cases)
627    o pkg/kpp: add code to have mixing in shelf ice caverns
628      - add myThid to all kpp routines (long overdue)
629    
630    checkpoint59
631    o pkg/exf:
632      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
633        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
634      - move exf header files from lower_case.h to UPPER_CASE.h ;
635        add missing cvs Header & Name
636      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
637      - add namelist param. selectStressGridPosition, exf_monFreq
638      - retire many _CLIM routines, and remove data.exf_clim
639        + params moved to data.exf
640        + climsst, climsss now handled by exf_set_gen, i.e.
641          climss?period=0 refers to constant field,
642          climss?period=-12 to monthly forcing
643      - split up namelists in data.exf
644    o pkg/seaice:
645      - remove seaice_exch and seaice_exch_uv
646      - remove superfluous exchange of theta
647      - add myThid to seaice_budget_ocean/ice
648      - add new interface for atmospheric wind forcing (C-grid only)
649        + new routine
650        + two new field (taux, tauy for stress over ice)
651        + removed one global field (DAIRN) for C-grid case only
652    o pkg/thsise
653      - 2nd set of modifs for thsice adjoint in conjunction with exf
654    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
655    
656    checkpoint58y_post
657    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
658      vertical diffusivity, similar to that in MOM4; turned on using
659      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
660      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
661    o Added capability for 3D specification of background vertical diffusion
662      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
663      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
664      "data" file that contains the 3D vertical diffusivity coefficients.
665    o ice dynamics (pkg/seaice) with thsice thermodynamics:
666      - add code within pkg thsice to advect & diffuse sea-ice fields
667      similar to (and will replace) what has been added in  seaice_advdiff.F,
668      but: - conserving Mass, Heat & Salt.
669           - better when using non-linear advection scheme (not yet fully tested)
670           - can also be used in atmospheric set-up (for now, only the diffusion).
671    
672    checkpoint58x_post
673    o IO option for global-file compact format:
674      - add options when generating topology (utils/exch2/matlab-topology-generator)
675      - add I/O capability (pkg/mdsio).
676      - adapt utils/matlab/rdmds.m to read this format.
677      for now long-line format not yet supported by pkg/mdsio (& exch2).
678    o shelfice: add a few diagnostics
679    
680    checkpoint58w_post
681    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
682      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
683      (and replace horiVertRatio in NH code).
684      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
685                         and tutorial_plume_on_slope (sensitive to truncation)
686    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
687      directly to drive seaice model (C-grid only)
688    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
689     - reintroduce computation of wind from stress,
690     - compute tau (in exf_bulkformulae.F) from windstress averaged to
691       mass points to avoid tau = 0
692     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
693    o rdmnc.m: make it work with "global" files created with gluemnc
694    o rdmnc.m : some improvements in dealing with singleton dimension
695      (tested on all testreport mnc output files).
696    o genmake2: disable pkg/profiles if netcdf test fails.
697    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
698    o move call to cal_readparms up to make calendar parameters/variable available
699      to all packages
700    
701    checkpoint58v_post
702    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
703      useDynP_inEos_Zc tested.
704    o pkg/exf: changes to properly interpolate/mask/scale initial fields
705    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
706      and portions thereof.  See read_cs.txt for description and examples.
707    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
708      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
709      following the great-circle arc between those 2 points.
710    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
711      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
712    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
713     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
714     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
715     - still needs work (not working with some options ; efficiency to improve)
716       and serious testing.
717     - use this scheme for temperature & salinity in 2 advection test exp.:
718       advect_xy & advect_xz, respectively.
719    
720    checkpoint58u_post
721    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
722    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
723    o testreport: add option "-skipdir" to skip some test.
724    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
725      momentum calculation.
726    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
727    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
728      remove checkpoint.F and the_correction_step.F (no longer used);
729      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
730    o add option (linFSConserveTr) to correct for tracer source/sink due to
731      Linear Free surface
732    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
733    o pkg/thsice: fix reading mnc-pickups
734    
735    checkpoint58t_post
736    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
737    o pkg/mdsio:
738     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
739       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
740       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
741     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
742     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
743       either MDS_READ_FIELD or MDS_WRITE_FIELD )
744     - new S/R (to replace MDSWRITEMETA), which allows to write more
745       informations (variable names, time ...) to meta files.
746     - modify rdmds.m to give back the meta file content.
747    o pkg/diagnostics: change vertical interpolation to be safer, and more
748       flexible (define p-levels to interpolate to in data.diagnostics);
749      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
750       diagnostic pointer.
751    o pkg/seaice: more cleaning up of seaice_growth, added many comments
752    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
753    o fix multi-category seaice:
754     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
755       SEAICE_MULTICATEGORY
756     - fix short wave heat flux
757    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
758       and allow to use EVP solver. Change forward lab_sea: test both EVP
759       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
760    o Initial check-in of lab_sea adjoint
761      (very similar to natl_box_adjoint/code_seaice)
762      * used C-grid and EVP solver
763      * used KPP, GM/Redi
764      * uses inAdExact=.TRUE.
765      * gradient checks fail for both ADM and TLM
766        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
767        f.d. gradients actually seem more problematic than ADM, TLM gradients;
768        issue is related to forward mismatch between g77 an ifort
769    o pkg/seaice: overhaul of thermodynamics
770     - growth.F and groatb.F are replaced by new routine seaice_growth.F
771     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
772     - move a few global fields out of SEAICE.h into seaice_growth.F and
773       make them 2D (FICE/QNETO/ ...)
774     - remove FO (it is the same as QNETO)
775     - introduce a few local fields to avoid modifying external fields such
776       as atemp, etc.
777    
778    checkpoint58s_post
779    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
780      changed exf_set_gen.F so that
781        genperiod=0 means input file is one time-constant field and
782        genperiod=-12 means input file contains 12 monthly means
783    o CG2D: use pre-computed solver main-diagonal (stored in common block);
784      this affects truncation error ; generate new output file for exp. which
785      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
786        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
787        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
788        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
789        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
790        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
791    o start implementation of deep-atmosphere and anelastic formulation
792    o verification: remove 2nd copy of input files and use script "prepare_run"
793      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
794    o mom_common/vecinv/fluxform: fix a few initialisation isssues
795    o profiles: fix for multithreaded case
796    
797    o diagnostics: rename few diags:
798      s/'PRESSURE'/'RCENTER '/g
799      s/'TICE    '/'oceFreez'/g
800      s/'TAUX    '/'oceTAUX '/g
801      s/'TAUY    '/'oceTAUY '/g
802      s/'SWFLUX  '/'oceQsw  '/g
803      s/DIFx/DFxE/g
804      s/DIFy/DFyE/g
805      and add few ocean-forcing diagnostics:
806      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
807    o modifications to pkg/seaice/growth.F and budget.F, which change results of
808      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
809      as actual snow thickness.  It now refers everywhere to effective snow
810      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
811    
812    checkpoint58r_post
813    o modifications to pkg/seaice/growth.F, which change results of
814      lab_sea experiment: fixes pertain to melting snow over open water, to
815      masking EVAP under sea ice, and to using the correct AREA variable for
816      computations of EVAP, PRECIP, HSNOW, and GHEFF
817    o add ability to read bathy, salt, and theta using MNC (off by def)
818    o add flooding algorithm and advection of HSNOW for pkg/seaice;
819      both are turned off by default and do no change any results
820    o seaice advection with pkg/thsice: a step toward the use of non-linear
821      advection scheme, but #ifdef or commented out for now (requires more EXCH).
822    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
823      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
824      in natl_box (affects results @ truncation level: update output.txt)
825    o multi-threading and IO:
826      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
827      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
828        (needed to work with SingleCpuIO): tested in all verif. exp.
829    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
830      affects the results (but none of the verification test uses this scheme).
831    o Adding some pkg/diagnostics capability to pkg/seaice
832      (will certainly be subject to changes)
833    o ctrl: adding new control variables:
834      lwflux, lwdown, evap, snowprecip, apressure, runoff
835    
836    checkpoint58q_post
837    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
838      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
839      high_res_cube configuration by 4% on Columbia.
840    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
841      add (in global_with_exf/code) a version of EXF_INTERP_READ without
842      dynamical allocation (seems to work in multi-threaded).
843    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
844      single CPU io) so that TAF does not have to see EESUPPORT.h
845    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
846    
847    checkpoint58p_post
848    o obcs: stop if obcs is used with useCDscheme = .true.
849    o shelfice:
850     - fix a sign error so that no slip at shelfice interface works
851     - remove stop for combination non-hydrostatic code and shelfice. That does
852       not mean, that the results are correct, but at least they are numerically
853       stable
854    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
855    o added adjoint exch routined for all exch*3d* routines
856      and updated flow directives
857    
858    checkpoint58o_post
859    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
860      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
861    o change controling S/R for writing pickup file (new S/R do_write_pickup)
862      and clean-up reading/writing of pickup files.
863    o fix local version of read/write pickup (NH part) in rotating_tank/code
864    o simplify EXCH interface:
865     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
866     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
867    o added the regrid package
868    o shelfice:
869     - add a simple boundary layer scheme to reduce noise
870     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
871    
872    checkpoint58n_post
873    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
874       local variable (not in common block).
875    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
876      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
877      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
878        to work with SingleCpuIO.
879    o add "_d 0" to real constant of pkg/cfc subroutines ;
880       update exp. cfc_exemple & tutorial_cfc_offline output files.
881    o multi-threading and IO:
882      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
883        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
884      - barrier before and after reading.
885      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
886      - avoid using MDS_WRITELOCAL for LAND pkg output.
887      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
888        common-block variables ; Allows multi-threading with master-thread IO.
889    o change default MAX_NO_THREADS from 32 to 4 ;
890      and stop cleanly when MAX_NO_THREADS is too small.
891    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
892    
893    checkpoint58m_post
894    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
895       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
896    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
897       keep global_ocean.90x40x15 (for AD testing) with former secondary test
898       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
899    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
900        add MITgcm_tutorials (= code + all the tutorials)
901    o ecco, option to compute cost for total ssh (mean+anom)
902    o consistent with addition of ptracer and ssh in pkg/profiles
903    o profiles: adding ptracer and ssh
904    o testreport: change multi-test output-file name
905      (from output.txt.{name} to output.{name}.txt)
906    o profiles: now ok for mutli-tiles case
907    o seaice: add 4 parameters for different advection schemes for area,
908      (effective) seaice thickness, enthalphy, and snow height. Their default
909      is the standard parameter SEAICEadvScheme
910    o calc_gw:
911     - add cosFacU in zonal viscous flux (harmonic.visc.).
912     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
913       of tutorial_plume_on_slope.
914    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
915    o calc_gw: true flux-form, account for horizontal grid spacing.
916      update rotating_tank results, but not plume_on_slope (affected at
917      truncation level, 11 digits).
918    
919    checkpoint58l_post
920    o calc_gw:
921     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
922     - remove side-drag for now (need to fix it); update plume_on_slope results.
923     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
924    o commit code to make SST/SSS weights spatially variable
925      (based on either variable in-situ or variable initial T/S weights)
926    o pkg/ecco:
927      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
928        now based on horizontally varying weights wthetaLev, wsaltLev
929      * cost_averagesflags now returns year indices in addition to day, month
930      * sflux balance is performed on annual basis
931        (sflxumm, sfluxmm2, bal_sfluxmm)
932      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
933        including separate counting and multipliers
934    o pkg/rbcs
935      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
936    
937    checkpoint58k_post
938    o testreport:
939     - always build in dir. "build" (if not there, mkdir build instead of building
940       & running in input)
941     - run in dir run (if it exists), in build otherwise.
942     - call prepare_run (if input/prepare_run exists)
943     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
944    o pkg/exf modifications to interpolation and rotation routines for more
945       reasonable treatment of North Pole singularity: for tracers North Pole
946       value is set to northernmost zonal-mean value, for zonal velocity it is
947       set to zero, and for meridional velocity it is set to northernmost value.
948    o pkg/exf/exf_check_range.F
949     - add tile index to diagnostics and move stop statement to the very
950       end of the routine.
951    o pkg/diagnostics: (diagnostics_main_init.F)
952      define title of isomorphic variables according to the current config.
953    o pkg/thsice with pkg/seaice dynamics:
954    - fix domain of computation (interior only, required for exf) and do exchanges
955    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
956    o towards a standard way of dealing with multi-threading in MONITOR
957      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
958    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
959       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
960    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
961    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
962    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
963       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
964    o tracer advection:
965     - clean-up and simplify calc_common_factors.F
966     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
967       advection subroutine (but still not used within DST advection S/R)
968    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
969    
970    checkpoint58j_post
971    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
972      from file (collects calls previously in FORWARD_STEP)
973    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
974    o adjoint store dir. adjusted accordingly
975    o genmake2
976      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
977    
978    checkpoint58i_post
979    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
980      on wind stress (SEAICEstressFactor defaults to 1.)
981    o Total number of Timers is finite (<=40): comment out 2 non-essential one
982      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
983    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
984      on CS-grid: no longer loosing mass.
985    o exf & curvilinear-grid: no longer modify longitude xC & xG.
986    o pkg/ggl90: fix sloppy output and fix a bug
987    o pkg/seaice: added SEAICEuseEVPpickup parameter
988      - Set to false in order to start EVP solver with
989        non-EVP pickup files when using SEAICEuseEVP
990      - fix sign error in diffusion in seaice_calc_rhs
991    
992    checkpoint58h_post
993    * Modifications for bottom topography control
994      o replace hFacC by _hFacC at various places
995      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
996      o add non-self-adjoint cg2d_nsa
997      o update autodiff support routines
998      o re-initialise hfac after ctrl_depth_ini
999      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1000    * Adding verification for 5x5 box (4-layer) bottom topography control
1001    
1002    checkpoint58g_post
1003    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1004       used for mean seasonal cycle, mean diurnal cycle); add an example
1005       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1006    o pkg/ggl90:
1007      - add parameter (minimum surface kinetic energy)
1008      - fix bug (avoiding division by zero)
1009    o couple pkg/thsice to pkg/seaice:
1010      - modify advection in seaice to accomodate new scalar fields to be advected
1011      - only muliDimAdection scheme work with seaice/thsice
1012      - mapping of thsice-variables to seaice-variables, back and forth
1013      - does not break the verification experiments, but does not give the
1014        desired results either
1015    o pkg/seaice
1016      - make (default) second order advection a bit less confusing?
1017    
1018    checkpoint58f_post
1019    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1020      to pkg/seaice):
1021      - new routines thsice_map_exf and thsice_get_exf provide the interface
1022      - add an additional formal parameter to thsice_solve4temp
1023    o pkg/exf:
1024      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1025      - correct Stefan-Boltzmann constant
1026      - new parameter for longwave surface emittance
1027      - separate some stuff from exf_bulkformulae into new routines  
1028        exf_radiation, exf_wind
1029      - add new parameters and constants: longwave emissivity for ocean, ice
1030        and snow, evaporation parameters over ice
1031      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1032        either wind from stress or stress from wind
1033    o pkg/thSIce:
1034    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1035    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1036       and THSICE_CALC_THICKN
1037    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1038    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1039      to make debugging easier.
1040    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1041    o pkg/bulk_force:
1042      - clean-up comments and parameters ;
1043      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1044    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1045      generate new output for test-experiment: aim.5l_cs.thSI
1046    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1047      testreport accordingly
1048    
1049    checkpoint58e_post
1050    o SEAICE_CGRID adjoint done
1051    o R_STAR adjoint implemented.
1052      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1053      * need to sort out init. of h0facc, etc.
1054    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1055      to be able to use it in pure forward.
1056    
1057    checkpoint58d_post
1058    o upgrade simple test-experiment to tutorial example:
1059     step.1: duplicate the experiment and (step.2) will remove the old copy.
1060      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1061      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1062      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1063      tutorial_global_oce_biogeo    <- copy of dic_example
1064      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1065      tutorial_plume_on_slope       <- copy of plume_on_slope
1066      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1067      tutorial_global_oce_optim     <- empty for now (David ?)
1068      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1069     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1070    o correct a sign problem in cost_scat.F
1071    o obcs and ptracers: fix boundary conditions for advections schemes
1072      with larger stencil
1073    o thsice adjoint: start
1074    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1075      completeness
1076    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1077      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1078    o ptracers adjoint:
1079      * avoid extensive recomputatations
1080      * fix missing re-init. of gptr (missed by TAF)
1081    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1082      me to turn off the excessive output to STDOUT that this package produces
1083    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1084      and add those terms in Vector-Invariant formulation.
1085    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1086      if the control period (xx_hfluxperiod etc) is 0
1087    o in profiles pkg, clean routines and fix details
1088    o in ecco pkg, reading ssh data:
1089      fix problem in case the model does not start at iter0=0
1090    o fix mnc-pickup/restart for ptracers
1091    o new package prifiles:
1092      code to compute profile-based cost by Gael Forget
1093      (modifs in ecco, ctrl, autodiff)
1094    o Benign bug fix in initialization (spotted by M. Mazloff) of
1095      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1096    
1097    checkpoint58c_post
1098    o adjoint: finish NLFS adjoint and provide reference output in
1099      verification/global_ocean.90x40x15/results_ad_nlfs
1100    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1101      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1102      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1103      with SEAICE_CGRID defined.
1104    o move calendarDumps from "data" to "data.cal" and clean-up the code
1105      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1106    o add useEXF & useCAL flags (for now, set in hard-coded way)
1107    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1108      (were missing in NH mode, and wrong in quasihydrostatic mode).
1109      waiting for Chris updated version of calc_gw to add those CALLs.
1110    o fix bug in quasihydrostatic S/R ;
1111      add a test for this option: global_ocean.90x40x15.qshyd
1112    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1113      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1114    o add on/off flag useOffLine for package OFFLINE
1115    o seaice:
1116      - modify advection so that it works also on the C-grid
1117      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1118        problem in multi-tile runs with C-grid
1119      - add flags for clipping ice velocities and/or masking solver forcing
1120      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1121        C-grid solver
1122      - added a few comments to seaice_diffusion.F
1123      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1124        are now exclusive)
1125      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1126        required re-ordering the code a little:
1127       + make DAIRN global variable (defined in SEAICE)
1128       + move computation of the viscosities eta and zeta into a new separate
1129         routine (because I need to recompute them in seaice_ocean_stress.F)
1130    
1131    checkpoint58b_post
1132    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1133      update output.txt of exp. aim.5l_cs.thSI
1134    o various mnc cleanups and improvements:
1135      + shrink lookup tables by factor of ~4
1136      + better error reporting when running out of lookup space
1137      + able to handle longer path/file names (up to 500 chars)
1138    o adjoint:
1139      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1140      - TBD: "hidden" mom_vecinv recomp. in dynamics
1141    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1142     (allow to differentiate between forcing components using new integer flags:
1143      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1144     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1145    o ecco
1146      - enable trend removal from SSH anomaly obs.
1147    o adjoint
1148      - a fix for PmEpR when #undef EXACT_CONSERV
1149      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1150      - try to fix "hidden" recomp. in forward_step for NLFS
1151        (NLFS seems broken sometimes after I checked it in)
1152    o seaice:
1153     - add c-grid version of the dynamic solver:
1154       + three new routines that are the c-grid substitute lsr, dynsolver
1155         and ostres
1156       + put a few fields that were local to dynsolver into global common
1157         blocks, so that I can move the computation of stresses etc into
1158         seaice_lsr (saves coding but may break the adjoint).
1159     - replace more hardwired parameters by runtime parameters
1160     - add ice masks that mask the rhs of the implicit solvers where there
1161       is no ice (commented out in seaice_dynsolver, because i am not sure
1162       if this works properly), eventually this should replace the clipping
1163       of ice velocities in seaice_dynsolver to +/-40cm/s.
1164    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1165      include it only where its needed
1166    o move balancing of fluxes before the call of external_forcing_surf
1167    o seaice:
1168      - correct units of turning angles (now they are really in degrees)
1169      - move computation of GWATX/Y out of main routine into dynsolver
1170      - initialize GWATX/Y in seaice_init
1171    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1172      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1173    o seaice: add runtime flags for turning angles (default to zero)
1174    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1175      and trend from exf forcing and ctrl control adjustments
1176    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1177      (since checkpoint57x_post)
1178    o change the default rotation period to 86164.s = the Earth rotation
1179    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1180      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1181    o seaice advection: add code for choosing between the default (2nd order
1182      central differences) and multiDim advection schemes provided by
1183      pkg/generic_advdiff
1184    o seaice:
1185      - removed all references to SEAICE_GRID.h fields from
1186        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1187        (cubed-sphere configuration will change a little)
1188      - grid computations in seaice_init are obsolete now.
1189      - cleaned up code a little so that is easier to read (hopefully).
1190      - added new (better?) discretizations of default advection and diffusion
1191        (turn on with SEAICEuseFluxForm)
1192      - replace 1 in 3d global fields by kSurface in growth.F
1193      
1194    checkpoint58a_post
1195    o seaice:
1196      - bug fix in advect.F
1197    o shelfice:
1198      - separate shelfice load anomaly from pload (breaks with time
1199        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1200        Its default is 0., but it may be computed more cleverly from (unknown)
1201        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1202        done offline. A good approximation of the pressure load anomaly is
1203        necessary to avoid large initial adjustment processes underneath
1204        deep-reaching shelfice.
1205      - small fix in ISOMIP shelfice_thermodynamics
1206      - add more sophisticated thermodynamics of Hellmer (1989), this is
1207        now the default
1208      - give a few constants more intuitive names
1209    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1210      if bulk formulae are used in long integration (especially EmPmR). Turn
1211      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1212      if balancePrintMean, the imbalance that is substracted is printed to
1213      STDOUT.
1214    o fix bug (typo) in obcs_apply_eta.F
1215    o add a new package shelfice which enables us to model the circulation
1216      underneath shelf-ice with draughts of hundreds of meters.
1217     - works
1218     - to do: + include improved thermodynamics
1219              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1220                instead of new field kTopC
1221              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1222                instead of new field R_shelfIce and new code in ini_depth.F
1223                and ini_mask_etc.F?
1224              + adjust vertical mixing schemes?
1225    o seaice pkg:
1226     - add a cpp-flag to include a simple formula for a salinity dependent
1227       freezing point of sea water at the surface
1228     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1229       meridional stresses are now different (and hopefully correct)
1230    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1231       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1232       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1233    o pkg/diagnostics: add options and parameters for regional-statistics
1234       diagnostics ; define regions by reading a region-mask from a file
1235       (might add other options later)
1236    o pkg/bulk_force:
1237     - add option and parameters to use AIM surface-flux formulae.
1238     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1239       others forcing fields (defined in PARM05, parameter file "data") are loaded
1240       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1241     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1242     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1243     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1244       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1245     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1246    
1247    checkpoint58
1248    o add "--embed-source" option to genmake2 which, when the supporting
1249      tools can be compiled (as determined by genmake2) will turn on the
1250      embed_files package which then embeds the entire MITgcm source code
1251      (*.[fFhc] + Makefile) used for the build within the executable
1252      - requested by CNH but off by default
1253      - adds a paltry <9MB to the mitgcmuv executable in most cases
1254      - only writes the output when useEMBEDSRC in eedata is true
1255    o clean up 3-dim. relaxation codes:
1256      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1257      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1258      * Thanks to Tom Haine for testing!
1259    
1260    checkpoint57z_post
1261    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1262      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1263    o fix the pickup behavior for obcs in combination with ptracers
1264    o fix a bug in ptracers_external_fields_load
1265    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1266      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1267    o transfered surface NH pressure to eta field (if exactConserv).
1268    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1269         and update lab_sea output.txt file.
1270    o completing 3-dim. relaxation code: additional term
1271         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1272      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1273      * At compile time, in "EXF_OPTIONS.h" set
1274          #define  ALLOW_CLIMTEMP_RELAXATION
1275          #define  ALLOW_CLIMSALT_RELAXATION
1276      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1277          tauThetaClimRelax3Dim = 15552000.0,
1278          tauSaltClimRelax3Dim  = 15552000.0,
1279      * 3 cases:
1280          1) Use a constant-in-time 3-dim. field
1281          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1282          3) Real-time relax. to time-evolving prescribed field
1283    o Adding Laplacian-type smoothness constraint on
1284      initial and boundary (forcing) controls (ic, bc)
1285      * enable at compile-time via
1286        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1287      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1288      * Absolute scale somewhat unclear so far
1289      * no area weighting was included since no other cost term does so far
1290    
1291    checkpoint57y_post
1292    First step for a NLFS adjoint
1293    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1294    o new init. routines for calc_r_star, calc_surf_dr
1295    o still need to deal with ini_masks_etc
1296    o testreport seemed happy
1297    checkpoint57y_pre
1298    
1299    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1300    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1301    o add new offset feature to offline pkg (plus minor cleanup)
1302    o cfc fixes for final year of integration
1303    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1304      be in GCHEM_OPTIONS).
1305    
1306    checkpoint57x_post
1307    o fix testreport Pb in multiple test experiment.
1308    o cleanup our namelist syntax in verification:
1309      - make it more F95 standards compliant (some work still needed)
1310      - allows the vast majority of our tests to work with gfortran
1311    o Non-Hydrostatic:
1312     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1313     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1314    o Allow to apply AB on T,S rather than on AB(gT,gS):
1315     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1316     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1317       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1318     - need a "clever" read_pickup to restart from the other AB formulation
1319    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1320    o remove some unused variables (reduces number of compiler warnings)
1321    o adjoint
1322      * Disable useVariableViscosity for adjoint for time being
1323        (there are a number of extensive recomputations)
1324      * Initialize certain variables needed for adjoint
1325    
1326    checkpoint57w_post
1327    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1328                 fix the singleCpuIO RS version of MDSWRITEFIELD
1329       and add a WARNING if using globalFiles=T with multi-processors.
1330    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1331      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1332    o tracer advection scheme:
1333      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1334       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1335       was not very convenient).
1336      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1337       (further tests needed for the implicit DST & Flux-Limiter schemes).
1338    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1339      and sRef for convenience, handy, when you want to initialize
1340      ptracers in a large domain with a constant non-zero value. Also,
1341      untangle ptracers_init.F a little.
1342    
1343    checkpoint57v_post
1344    o change dome exp. to use variable viscosity in side-drag terms.
1345    o remove all the files from the cfc_offline test since they are now
1346      incorporated into tutorial_cfc_offline which has been producing
1347      identical results for a few days of testing
1348    o add new parameter: sideDragFactor to enable half-slip-side BC
1349      and change side-drag S/R to use viscosity from mom_calc_visc
1350      (can switch back by setting sideDragFactor=0.); affects results at
1351      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1352       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1353    o vorticity & strain are now computed without masking, to account for
1354      no-slip-side BC in variable viscosity calculation ; mask is applied
1355      anyway later on, before computing advection/coriolis terms.
1356    o modify exp4 to test new obcs support for reading from external files
1357      and for passive tracers
1358    o fix behavior of ptracers_monitor when monitor output is written to a
1359      netcdf-file; still not independent of monitor.F (writes in the same
1360      file).
1361    o change default value of tRef (put a uniform, meaningful value for ocean
1362      & atmos) and initialize sRef (was missing, as Martin mentioned).
1363    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1364      to be proportional to enstrophy dissipation length.  Thus,
1365       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1366      This is now consistent with Smagorinsky and with the manual.
1367    
1368    checkpoint57u_post
1369    o OBCS and PTRACERS: add open boundary support for passive tracers
1370      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1371        OB-values from file; this is not different from the way theta and salinity
1372        are treated
1373      - however, Orlanski-radiation conditions are not supported, and the model
1374        will stop if you use pTracers and Orlanski at the same time.
1375      - beefed up the rountine obcs_external_fields_load: now only those open
1376        boundary values are overwritten with values from files for which there
1377        are really files, otherwise the OB-fields remain untouched. This makes
1378        it possible to use different OBs at different ends of the domain (as
1379        with EXF)
1380    o reduce number of exch calls in shap_filt (s2).
1381    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1382      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1383    
1384    checkpoint57t_post
1385    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1386    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1387      same truncation, independent of the face number: affects affects several
1388      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1389    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1390      note that biharmonic viscosity + no-slip was not tested in any experiment.
1391    o fix bug in non-linear free-surf side-drag ; generate new output for
1392      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1393    o make mnc honor the writeBinaryPrec flag for most kinds of output
1394    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1395    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1396      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1397    o add brackets in multi-terms sum to get same truncation, independent of
1398      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1399      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1400    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1401      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1402      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1403      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1404      Suggested values of viscosity parameters found in mom_calc_visc.
1405      Many new viscosity diagnostics available.
1406    
1407    checkpoint57s_post
1408    o Add clearing-house for viscosity calculations, mom_calc_visc and
1409      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1410      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1411      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1412      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1413      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1414      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1415      ViscAhStrain and viscAhTension are now retired.
1416    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1417    o In response to JMC's bug report, genmake2 now ignores any soft-links
1418      that it finds in the *current* directory when searching for files.
1419      Soft-links found in any other source directories will still work as
1420      they did before.
1421    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1422      a C routine to unlimit the stack size
1423    o mnc-ify pkg/aim snapshot vars
1424    o mnc-ify pkg/land as requested by Daniel
1425    o various changes to mnc including:
1426      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1427      - output can now be grouped so that all files within a group
1428          change the ITER portion of their names in lock-step together
1429      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1430          and works with both EXCH1 and EXCH2 (but needs more testing)
1431      - writing works for all verification test cases w/ g77 on Linux
1432    
1433    checkpoint57r_post
1434    o make MNC variable initialization happen earlier
1435    o add diagnostics for (almost) each term of the momentum Eq.
1436    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1437    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1438    o remove MINIMAL_TAVE_OUTPUT option ;
1439      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1440    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1441      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1442    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1443    o add time-dependent SST, SSS control
1444    o cost terms in ecco/ modularized (new cost_generic.F)
1445    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1446    o new infrastructure for seaice model vs. obs misfits in seaice/
1447      * driver from the_main_loop.F is seaice_cost_driver.F
1448      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1449      * gradient check in Exp. 6a of natl_box_adjoint/
1450    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1451      (see README file)
1452    
1453    checkpoint57q_post
1454    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1455    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1456      - bug was reported by Jean-Michel and Ian Fenty
1457    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1458      update exp. cpl_aim+ocn output.
1459    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1460      Needed for high-res. runs with large global files
1461      to be able to limit tapelev size
1462    o Changed some tests for adjoint:
1463      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1464      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1465      * global_ocean.90x40x15/ back to default 3-level checkpointing
1466    o Modifications to enable scripted COMMON to MODULE conversion
1467      * verification/OpenAD/code/ has necessary scripts and description;
1468      * converts, compiles and runs successfully;
1469    
1470    checkpoint57p_post
1471    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1472    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1473      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1474    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1475    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1476      (was already the case for dissipation with mom_vecinv,
1477       and also the case for grad.PhiHyd when staggered-timeStep)
1478      This will allow to put dissipation out-off the AB time-stepping.
1479     Unfortunately, affects truncation error. Update output of exp. that "fails"
1480      (cg2d matching number) and leave the others for later: front_relax(10),
1481      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1482      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1483    
1484    checkpoint57o_post
1485    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1486      (2) its ready to be documented during the 20050801 DocFest
1487    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1488      for ideal_2D_oce and lab_sea on linux_ia32_g77
1489    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1490      in global1x1_tot/code_seaice_adj to access indices 32, 33
1491      (worth another tag)
1492    
1493    checkpoint57n_post
1494    o adding precip control xx_precip 32
1495    o adding swflux control xx_swflux 33
1496    o Replacing 10 forcing penalty cost routines by 1 generic.
1497    o Implementing partitioning in time-mean and variable adjustment
1498      for atmos. state.
1499    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1500  o in natl_box_adjoint:  o in natl_box_adjoint:
1501    * updated: results_bulk/    * updated exp 1 to 10
1502    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1503    o updated global1x1/*_seaice_adj/
1504      to incorporate latest changes
1505    o enable useSingleCpuIO for mdsio vector routines
1506      (applies in particular to tapelev I/O)
1507    o removed inefficient K-loop in all active_file*control*.F
1508    
1509  checkpoint57m_post  checkpoint57m_post
1510  o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)  o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)

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