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revision 1.390 by jmc, Sun Nov 21 22:22:31 2004 UTC revision 1.1032 by jmc, Wed Oct 22 00:19:33 2008 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o gmredi (Visbeck-variable-K):
8      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
9      - change computation of Visbeck-K where Slope > Smax :        
10        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
11        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
12    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
13      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
14    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
15    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
16      does not become too large (to avoid precision problems in implicit-diffusion
17      solver); update ideal_2D_oce output.
18    o pkg ggl90:
19      - in ggl90_cal.F: compute only one set of visc/diff, used to
20        step forward TKE/T/S/momentum
21      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
22        have Prandlt =1)
23    o gmredi (fm07):
24      - add lower limit on Transition layer thickness + lower limit on 1/lambda
25      - allow to set few more params from data.gmredi
26    o pkg ggl90:
27          - add missing sqrt(2) factor in computation of mixing length
28            scale in ggl90_calc.F
29            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
30    
31    checkpoint61d
32    o adjoint modifs
33      - adapt to new field rhoInSitu
34      - allow to revert from StoreDynVars2D, StoreDynVars3D
35        to individual fields
36        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
37    o store 3-D (in-situ) density in commom block (DYNVARS.h)
38     - save 1 rho computation.
39     - no longer modify T & S inland when using down_slope pkg.
40    o gad_som : allow to switch to SOM advection for T & S without corresponding
41      pickup files (using new S/R: MDS_CHECK4FILE).
42    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
43      (for useSingleCpuIO to work in multi-threaded)
44    o pkg/shelfice:
45     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
46       with SHELFICEtopoFile in data.shelfice
47     - move code for reading ice shelf topography and modifying hFacC into separate
48       subroutines of the shelfice package
49     - separate initialisation of "fixed" and "variable" variables
50     - kTopC is not (yet) replaced by kSurfC, although this is possible
51    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
52    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
53      and rename:
54      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
55      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
56    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
57    
58    checkpoint61c
59    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
60      to add mass source/sink of fluid in the interior (3-D generalisation
61      of oceanic real-fresh water flux).
62    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
63    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
64    o new pkg: down_slope
65      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
66      - presently, modify T & S inland (dwnslp_calc_rho.F).
67        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
68      - implementation for ocean in P-coords not tested.
69      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
70    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
71      (to facilitate conversion of oceanic pkg to p-coordinate).
72    o change FIND_RHO to FIND_RHO_2D :
73      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
74    o new pkg: cheapaml
75    
76    checkpoint61b
77    o exch2:
78      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
79      - no longer depend on the order sequence (N,S,E,W).
80      - 3rd exchange no longer needed (tested with 24 tiles).
81      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
82      - exch_UV_A-grid readily available (but not yet tested).
83      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
84      (both are no longer needed) in exch_uv: no effect in forward run; but
85       get truncation error differences with adjoint exch.
86    o exch2:
87     - change index-bounds storage (moved from target to local tile,
88       more intuitive this way) ; rename/remove some variables.
89     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
90    
91    checkpoint61a
92    o exch2/matlab-topology-generator:
93      fix bug in index bounds for N-S internal exchange (hard to tell if this
94      had any effect on the solution).
95    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
96      is exceeded
97    o testreport: modify syntax of awk, so that it works also with
98      awk, and not only with nawk and gawk
99    
100    checkpoint61
101    o autodiff
102      Change default for TAF usage by removing argument '-nonew_arg'
103      This changes TAF subroutine argument list (ordering of active var.)
104      Omission of this flag leads to incompatibility w.r.t. TAMC
105      To restore TAMC-compatibility, need following modifs:
106      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
107      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
108      Tested TAF version is 1.9.22
109      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
110    
111    checkpoint60
112    --->>> This is the last checkpoint for which generating the adjoint
113    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
114    --->>> by default.
115    --->>> Future checkpoints will ommit this flag by default.
116    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
117    o pkg/grdchk: Add gradient check to etan0 perturbations.
118    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
119    o pkg/autodiff: more flexibility in zeroadj.
120      model/src: modifying do_oceanic_phys.F accordingly.
121    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
122    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
123      special setup of gmredi for which the adjoint is stable
124      enough for parameter optimization.
125    o bridging the gap between eddy stress and GM.
126      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
127          along with a change in CPP option (now ALLOW_EDDYPSI).
128      -> when using GM w/ GM_AdvForm:
129          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
130          is applied either in the tracer Eq. or in momentum Eq.
131          depending on data.gmredi (intro. GM_InMomAsStress).
132      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
133      The key modifications are in model/src/taueddy_external_forcing.F
134      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
135    
136    checkpoint59r
137    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
138      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
139      fix option to read coriolis(@ cell-corner) from files with CS-grid.
140    o pkg/mnc: add some attributes to standard 1D-coordinate variables
141    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
142      mass points, when using mnc for output
143      - add runtime parameter (missing_value, missing_value_int) to override
144        default (which is the value of getcon('UNDEF'))
145    o pkg/mnc: prepare mnc for the actual use of missing values with the
146      diagnostics package: small fix in mnc_cw_readwrite.template and more
147      initialisation of never used fields
148      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
149      versions
150    o pkg/thsice/thsice_ini_vars.F added default initial values so that
151      thermodynamics sea ice solver does not blow up when some initial fields
152      are missing.
153    o move from external_forcing_surf.F to ini_forcing.F
154      the p-coord. hack consisting in using pLoad to set phi0surf ;
155      update output of tutorial_global_oce_in_p (affected @ truncation level).
156    o Freshen up a bit hs94.1x64x5, notably:
157      remove rotationPeriod and tRef=5*0. (adjoint only), and add
158      exactConserv=.TRUE.
159    o pkg/generic_advdiff:
160      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
161      applies to files where Temperature & Salinity 2nd Order moments are used.
162    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
163      this uses a dynamically allocated internal state data structure
164      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
165      and requires a fortran 90 compiler
166    
167    checkpoint59q
168    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
169       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
170    o Refresh tutorial_global_oce_biogeo, notably:
171      - change bathymetry (put back seamounts in ACC, use hFacs)
172      - change EOS (POLY3 --> JMD95Z)
173      - use Bryan-Lewis vertical diffusivity
174      - use multidimensional advection
175      - remove old virtual virtual in dic pkg, now done through ptracer pkg
176      - change a couple of parameters in dic pkg
177    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
178    o pkg/obcs: change default to OBCSfixTopo = .true.,
179      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
180      - replace "debugMode" with "debugLevel .GE. debLevB"
181    o implementation of TAF directives for gchem,cfc,dic
182    o remove "exp5" (replaced by tutorial_deep_convection).
183    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
184      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
185      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
186      --> changes results in exp4, seaice_obcs
187    o tutorial_deep_convection :
188      update the set-up and increase resolution and domain size ; start
189      from pseudo initial conditions = output at t=120mn in order to see
190      something happening when running testreport.
191    o pkg/seaice: add os7mp as an advection scheme
192                  add check for advection schemes
193                  add a flag for restoring T and S underneath sea ice
194    o pkg/my82: add netcdf-support and diagnostics
195    o thsice pkg:
196      - Now hsMax limits snow height by turning it into ice following
197        flooding scheme (and now conserving energy)
198      - Slight rewriting of the formula in thsice_calc_thick.F
199      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
200      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
201    
202    checkpoint59p
203    o gchem / dic / cfc :
204      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
205      - add new parameter files: "data.dic" & "data.cfc" ;
206      - various re-arrangement in initialisation & header file ;
207      - fix tutorial_global_oce_biogeo for multi-threaded test.
208    o pkg/dic: test for "pickup_dic" file when restarting ;
209      if no pickup-file, can restart with a re-initialised pH (same as it did
210      before) providing pickupStrictlyMatch is set to False.
211    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
212      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
213    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
214      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
215    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
216     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
217       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
218    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
219       scheme to use for vorticty-term ;
220     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
221       (with default selectVortScheme, return to original discretisation)
222     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
223    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
224    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
225      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
226      also fix diagnostics VISCAHW & VISCA4W.
227    
228    checkpoint59o
229    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
230    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
231      move a few statemens out the main loop into separate loops
232    o pkg/shelfice:
233      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
234        (kg/m^2/s), does not break tests, because in verification/isomip,
235        rhoConstFresh=rhoConst (by accident)
236      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
237      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
238        new file model/src/seawater.F, so that they are available for all pkgs.
239      - convert potential temperature into in-situ temperature. This changes the
240        isomip tests => update tests
241    o add a flag writePickupAtEnd (default=true) to be able to suppress
242      writing a pickup at the last timestep
243    o tools/mpack-1.6 :
244      - disable automake (not working) and autoconf (not needed).
245      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
246        also cleaner with much less compilation warnings.
247    o pkg/profiles:
248      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
249      (for "less than 32 characters name" compiler requirement)
250    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
251      conditions that have a different sampling frequency than S/T/U/V obcs
252    o pkg/diagnostics (stats-diags):
253      - fix global Min/Max in case 1 processor get only empty tiles
254    o genmake2: replace (4 times)
255         make genmake_tc_1.o >> genmake_warnings 2>&1
256      with
257         COMM="$CC $CFLAGS -c genmake_tc_1.c"
258         echo $COMM >> genmake_warnings
259         $COMM >> genmake_warnings 2>&1
260      to make genmake2 always see the value of CC as specified in the optfile.
261    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
262      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
263      - modify verification advect_cs test to test SOM-advection on CS-grid.
264    o pkg/ctrl:
265      - Rewrite of ctrl_map_ini_ecco.F,
266        introducing a generic routine (ctrl_map_ini_gen.F).
267      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
268    
269    checkpoint59n
270    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
271      number in dedicate array "hdiag":
272      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
273        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
274      - many small changes (integer format) for large number of diagnostics
275      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
276        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
277    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
278      usingSphericalGrid, this allows to define the rotated grid coordinates
279      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
280      geographical coordinates according to the inverse of the rotation defined
281      by the Euler angles, so that Coriolis parameter and online-interpolation by
282      exf works with the geographical coordinates on XC/YC/XG/YG.
283      Naturally, this feature does not work with all packages, so some
284      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
285      profiles), because there the coordinates are assumed to be regular
286      spherical grid coordinates.
287    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
288      - introduce isopycnal diffusion coefficient control.
289    o tools/adjoint_options:
290      - additional control vector components.
291    o pkg/mnc: have mnc create marginally meaning full coordinate variables
292      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
293    o pkg/mypackage:
294      - add example of read/write pickup for state-var ;
295      - add entry points to the main code for state-vars diags & write-pickup.
296    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
297      transitions for useExfYearlyFields
298      - add new subroutine that determines the file to read from for
299        use*YearlyFields = .TRUE. and .FALSE.
300      - add a verification experiment to global_with_exf that tests
301        useExfYearlyFields with USE_EXF_INTERPOLATION defined
302    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
303      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
304      subroutines (which could be generated from a template, because they are
305      almost identical), for now they are included in obcs_prescribe_read.F for
306      simplicity
307    o pkg/exf:
308      - add a little more diagnostic to exf_interp_read (in analogy to
309        mds_read_field, can be turned off with debugLevel < debugLevA=1)
310      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
311        ugly but fast by unrolling short inner loops, inserting a unroll=8
312        directive in routine lagran, and splitting a loop and making do while the
313        outermost loop (the latter requires the intoduction of index arrays)
314    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
315    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
316      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
317    o verification/seaice_obcs: updated for restart test and latest options
318    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
319      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
320      for now this is only available for the C-grid code and also within
321      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
322    
323    checkpoint59m
324    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
325      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
326    o gad_som : fix flux output (& diagnostics) to have same units as other  
327      advection scheme fluxes (was previously multiplied by deltaT).  
328    o added verification/seaice_obcs both to test seaice open boundaries
329      and to provide an example matlab scrpt for generating them
330    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
331    o pkg/salt_plume: clean up salt_plume_frac.F to
332      remove redundancy in PlumeMethod 1 and 4
333    o pkg/kpp: added saltplume diagnostics
334    o pkg/obcs and pkg/seaice:
335      - do not set uice and vice to zero when OB*icefile are unspecified
336      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
337      - moved seaice tracer obcs after call to seaice_growth
338    o pkg/salt_plume: added various options for salt plume depth
339      criterion and for vertical distribution of the salt
340    
341    checkpoint59l
342    o pkg/ptracers: new version of ptracers pickup:
343      read meta file and write only fields which are needed to restart.
344      ( same logic as main pickup file ; also using pickupStrictlyMatch )
345    o pkg/seaice:
346      - add timescale for melting due to warm mixed layer as a means of
347        setting SEAICE_availHeatFrac more conveniently
348      - add a CPP-flag/runtime parameter check for flooding algorithm
349      - reformulated availHeat in seaice_growth.F to be independent of AREA
350    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
351      unit changes
352    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
353    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
354      SX vector computer.
355    o pkg/seaice:
356      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
357        seaice forcing fields can now be read only through pkg/exf
358      - removed some unused halos
359    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
360    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
361      or U/VICE from U/VWIND before computing U/VSTRESS
362    
363    checkpoint59k
364    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
365      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
366    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
367      all experiments pass when compile with un-initialised var. checking option.
368    o added pkg/salt_plume
369    o script to test restart (for now, in MITgcm_contrib/jmc_script)
370    o pkg/seaice: new read/write pickup version.
371      read meta file and write only fields which are needed to restart.
372      ( same logic as main pickup file ; also using pickupStrictlyMatch )
373    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
374    o lab_sea.hb87: modify the domain & update output.hb87.txt :
375      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
376      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
377      process. Fixed here by closing the domain at the Northern boundary.
378    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
379    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
380      a set of consecutive levels in/from a 3-D array.
381    o pkg/ptracers:
382      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
383      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
384    
385    checkpoint59j
386    o in pkgs: dic, obcs, offline, rbcs:
387      standard way to compute coeff. for time interpolation between 2 time reccords
388      which retains full precision (& make results less dependent on compiler).
389      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
390    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
391      packages instead of reading ice cover and wind speed separately
392    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
393     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
394      to allow to compile customized code before the update)
395    o cleaning-up:
396      - fix CPP instruction syntax in pkg/obcs
397      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
398        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
399      - fix some threads issue in IO parts.
400    o pkg/dic:
401      - add tons of "_d 0" (--> much better testreports !)
402       and then update outputs of tutorial_global_oce_biogeo
403    o pkg/mom_fluxform:
404      add a special version of momentum advection intended to conserve momentum
405      next to a bathymetry step or a coastline edge. (default = off = #undef)
406    o new read/write pickup version:
407      - for now, only implemented for main (mdsio) pickup file.
408      - write out only what is needed to restart; merge pickup_nh , pickup_ph
409        and main pickup together.
410      - read meta file; read only what is needed to restart; stop if a field
411        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
412        if it make sense (even if the restart is not perfect).
413      - if no meta file, assume that pickup to read corresponds exactly to
414        a pickup that would currently be written.
415      - read pickup written in the old format (until checkpoint59i) if it
416        recognizes an old meta file (no field-list).
417      - add a meta file in exp. which starts from a pickup: 2 cases:
418        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
419         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
420        b) a meta file describing the content of the associated pickup file
421         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
422    o pkg/mdsio & pkg/rw:
423      - new routine to read a meta file ; new set of routine to read
424        Multiple-fields file (with meta file).
425    o added open boundary conditions capability for seaice
426        HSNOW, HSALT, UICE, and VICE
427    
428    checkpoint59i
429    o adjoint:
430      * fix multiDimAdvection adjoint
431        (partial recomputation problem by TAF for fVerT(:,:,kDown)
432        and comlev1 size definition (maxpass vs. max. number of tracers)
433      * verification/global_ocean.90x45x15 adjoint now tests
434        NLFS and multiDimAdvection using DST3 (=30)
435      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
436    o pkg/kpp: add "_d 0" to real constant (if missing);
437      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
438      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
439    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
440      for internal parameters related to restart process (formerly from PARAMS.h)
441      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
442    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
443      as argument. (only atm2d & obcs write_pickup have not yet been updated)
444    o pkg/monitor:
445      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
446      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
447      - account for deep Atmosphere factor and density factor (anelastic)
448    o added open boundary conditions capability for seaice HEFF and AREA
449    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
450      thermodynamics
451      - requires a little reorganization, which affects the testreport results
452        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
453        so that now the conservative form is tested
454      - add a few comments
455    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
456    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
457    o add new diagnostics to seaice: advective, diffusive fluxes (only for
458      multidim-advection, for scheme 2 they are not filled) and transports,
459      thermodynamic growth rates
460    o change units of EmPmR (inside the code, + within coupling interface)
461      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
462      Affects results @ truncation level (cg2d match) and update output of
463       experiments: lab_sea(6), global_ocean.90x40x15(10),
464      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
465      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
466      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
467      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
468    
469    checkpoint59h
470    o pkg/exf:
471      - improve vectorization by moving if-statement out of loops in
472        exf_mapfields, exf_radiation
473      - exf_bulkformulae.F: introduce 2D fields and vectorize code
474    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
475    o testreport:
476      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
477        monitor & update offline_exf_seaice exp. output.
478      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
479    o pkg/seaice:
480      - bug fix in the evp solver: boundary conditions were affected be
481        masking of zMax/zMin (changes results)
482      - minor bug fix in boundary conditions in seaice_calc_strainrates
483        (changes results for no_slip)
484      - seaice_lsr.F: make interpolation of eta dependent on boundaries
485      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
486      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
487        stress formulation and no-slip boundary conditions
488    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
489      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
490    o pkg/seaice: a first HSALT time stepping equation has been checked in
491    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
492      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
493      without requiring DO-IF statements
494    o pkg/thsice:
495      use continuous power-law function for partition of energy between lateral
496      melting/freezing and thinning/thickening ; old code using step function
497      still available with #undef THSICE_FRACEN_POWERLAW
498      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
499    o testreport: change AD testing : check against results/output_adm.txt
500      using same scripts as for forward test.
501    
502    checkpoint59g
503    o adjoint testing: in preparation for changing testreport:
504      - output format: cost and grad written on separated lines
505      - ad output results in directory "results" (instead of "results_ad")
506    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
507    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
508    o pkg/ecco: allow user defined cost function contributions
509    o testreport:
510      Allow to choose (per experiment) the list of tested output variables
511       and the main variable (used to issue a pass/FAIL ) ;
512      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
513      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
514      Also modify printing of summary:
515       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
516       b) echo the list of tested variables in the individual summary.txt of
517          each experiment.
518    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
519      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
520      (but still depend on the tile decompostion of the domain).
521    o pkg/seaice: change a discretization detail to make the B-grid code
522      "more symmetric". This change is likely to remove all "ridges/leads" that
523      where quasi-aligned with the grid in B-grid solutions. It may also be
524      the solution to the stress coupling issues with the B-grid.
525    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
526      remove .cvsignore from input dir. (since testreport no longer run here).
527    o pkg/thsice:
528     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
529     - fix reshaping of sea-ice just after advection:
530       melt all the ice only if ice-volume is too small.
531     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
532       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
533     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
534    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
535      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
536    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
537      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
538      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
539      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
540      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
541      -> update output.txt
542    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
543     this affects truncation error: -> update output.txt of exp:
544      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
545      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
546    
547    checkpoint59f
548    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
549    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
550      a bounded range (in forward mode)
551    o pkg/ecco, ctrl, autodiff and mom_common:
552     internal parameter controls, completements of implementations
553    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
554    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
555      (not seem any difference in testing results).
556    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
557       at face corners.
558    o pkg/generic_advdiff:
559     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
560      loop range indices for computing vertical advection tendency
561      and do the calculation in the interior only (no overlap) ;
562      for now, only implemented for SOM advection (to save CPU time).
563     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
564    o exch2 adjoint
565      First set of changes:
566      - add exch2 hand-written adjoint templates
567      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
568        This will require cleanup in pkg/autodiff/*.F
569        (changed routines currently kept separate in verif. code/)
570      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
571        that used to hide exch2 or cubed-sphere specific code
572        (commented via 'cph-exch2')
573    o pkg/seaice
574      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
575    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
576       output of global_ocean.cs32x15.thsice .
577    
578    checkpoint59e
579    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
580      for B-grid vector (not yet tested) and C-grid vector (<- only used
581      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
582    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
583      (#ifdef ALLOW_SALT_PLUME)
584    o gather_2d/scatter_2d: removed halo regions
585    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
586      scheme and the corresponding test case (under front_relax dir). For now,
587      only available with Skew-flux form and not yet tested in realistic set-up.
588      adjoint: store directives updated, but gradient checks deteriorated,
589      so maybe GM/Redi adjoint is now broken.
590    o seaice adjoint
591      * add AREA, HEFF, HSNOW as control variable
592        (should not change lab_sea results)
593      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
594    o pkg/seaice:
595      * added computation of saltFlux in seaice_growth;
596        For time being, sea ice salinity is assumed constant
597        contribution of snow flooding to freshening of sea ice is neglected.
598        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
599        defaults to 0.0 in order to maintain backward compatibility.
600        Typical values for SEAICE_salinity are 4 to 10 g/kg.
601      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
602      * added SEAICE_availHeatFrac, which specifies fraction of surface level
603        heat content used to melt or grow ice
604      * commented out cap of HICE: it helps keep ice thinner
605      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
606      * applied OBCS T/S mask to HEFFM sea ice mask
607    
608    checkpoint59d
609    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
610     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
611     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
612    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
613     and change default value of parameter "GM_Small_Number";
614     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
615       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
616       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
617    o pkg/ecco: cost function when applying pkg/smooth to controls
618    o pkg/ctrl: add forcingPrecond run time parameter
619    o pkg/seaice:
620     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
621     - fix bug in metric terms of u-equation in LSR solver (implicit part),
622       changes verification/lab_sea
623     - rearrange implicit part of u-equation in LSR solver to make it easier to
624       read, understand, and debug. This causes changes at the truncation level.
625     - fix (serious) bug in the boundary conditions (sign error in the implicit
626       part) of the LSR solver. Changes all LSR results.
627     - fixed problem with HSNOW initialization to avoid thick snow when AREA
628       is initilized with small values - does not change lab_sea results.
629     - added HsnowFile initialization capability
630    o pkg/smooth: addition to model/src and pkg/ctrl so allow
631     initialization of pkg/smooth and application to control vector
632    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
633    o dependencies: pkg/profiles requires pkg/cal
634    o pkg/profiles:
635     - added option ALLOW_PROFILES_GENERICGRID
636         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
637         that interpolation information (grid points and coefficients) is provided
638         within the netcdf input files.
639         -> sample matlab scripts can be found in MITgcm_contrib/gael
640         that allow you to prepare netcdf input files.
641     - also modified: cleaner include statements, cleaner error print statements,
642       cleaner stops when error, and more tests of the netcdf input files consistency.
643    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
644    o pkg/seaice:
645     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
646       requires a new routine: seaice_diagnostics_fill.F
647     - make sure that seaice does not move if not forced (pressure replacement
648       method, Hibler and Ip, 1995), changes results
649     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
650     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
651       It is turned off by default (=-1.), because it changes the results.
652     - make it possible to read AREA from a file, too.
653    
654    checkpoint59c
655    o add S/R and diagnostics for oceanic mixed-layer depth
656    o move GMRedi call after all vertical mixing schemes (including KPP)
657    o pkg/thsice:
658     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
659      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
660    o pkg/obcs:
661     - bug fix for balance code
662    o pkg/seaice:
663      - allow values of SEAICE_elasticParm > 1
664      - add new parameter SEAICE_evpTauRelax as an alternative
665        to SEAICE_elasticParm
666      - make lsr boundary conditions free slip (by default), changes result
667      - add code for no slip boundary conditions for lsr
668      - set minimum of zeta to zero (and not 4e8) (changes results)
669      - add a cap on AREA after advecting AREA if seaice_growth is not called
670    o change calculation of Visbeck K:
671      - no longer depend on tapering scheme; instead, compute slope (limited
672        by GM_maxSlope). this is equivalent to what was comuted before with
673        clipping or linear tappering.
674      - fix vertical averaging (wrong by 1/2 level)
675      - leave the old version (but will not be maintained) within
676        #ifdef OLD_VISBECK_CALC / #endif
677      - update output of exp. ideal_2D_oce
678    o change error catch in calc_r_star to improve vectorization
679    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
680      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
681    o adjoint:
682      Re-organized adjoint checkpointing according to Matt Mazloff
683      (but with modifs/completions/cleanups)
684      Storing is now bundled into large arrays to optimized I/O
685      (and second step in cleanup of the_main_loop)
686    
687    checkpoint59b
688    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
689      - export/import (between ocean & coupler) fields needed for ocean DIC.
690    o pkg/seaice:
691      - get rid of three more exchanges seaice_calc_viscosities (required
692        different loop boundaries in seaice_lsr and seaice_ocean_stress)
693      - bug fix in seaice_ocean_stress (update of lab_sea required)
694      - reduce loop boundaries to necessary minimum also in seaice_evp
695      - go back to the old way of computing deltaC/Z as the adjoint likes that
696        better
697    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
698      passive tracer to an Age Tracer) + update output.txt
699    o pkg/exf:
700      - implement A-grid / C-grid selection for wind-stress input files.
701      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
702      for now, in exf_bulk_largeyeager04.F only :
703      - change implementation for case where windspeed + 2. components wind-stress
704        are read-in. AND use rhoConstFresh to convert evap.
705    o pkg/seaice:
706      - use correct EXCH_UV for wind-forcing (on A-grid).
707      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
708        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
709    o pkg/exf:
710      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
711      EXF_INTERPOLATION:
712      - merge global_with_exf/code version of exf_interp_read.F
713        to the main code ;
714      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
715        reading the file ; Important: This options needs to be defined to recover
716        previous code.
717        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
718      - no longer loose real*8 precision along the way when using exf_iprec=64.
719    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
720      - change discretisation of evp-solver in order to avoid another exchange
721        (changes lab_sea) and clean up a little
722      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
723        help the adjoint (this also changes the results slightly)
724      - add a few "_d 0" where they had been missing in seaice_evp.F
725      - cleaning up: remove unused seaice_calc_rhs.F
726    o pkg/exf: some cleaning-up:
727      - change various "constants" into runtime parameters
728      - cleaned-up Large&Yeager04 routine which should eventually
729        replace exf_bulkformulae.F (changed names of S/R and CPP)
730        and merged various ALLOW_ATM_WIND options
731     only used with thsice pkg (in thsice_get_exf.F):
732      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
733        which are used when useStabilityFct_overIce=TRUE (= the default)
734      - change default values of ice & snow emissivity and scale downward LW
735        by ice & snow emissivity.
736    o pkg/thsice:
737     fix few little problems, in thsice_calc_thickn.F:
738      - growth vertically (and not laterally) if iceFrac == iceMaskMax
739      - melt only laterally if hIce < hThinIce (as the comments say)
740      and in thsice_extend.F:
741      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
742      - start to form ice as soon as the minimum ice-volume is reachable.
743     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
744      and cpl_aim+ocn
745    o pkg/kpp
746     - move computation of surface related input fields to KPP into a new
747       subroutine kpp_forcing_surf.F
748     - remove wrong (within bi,bj loops) EXCH calls.
749     - little cleaning (add argument myThid in last position, cvs header ...)
750     - for now, fix conservation problem by exchanging KPPviscAz (may not
751       be the best fix)
752    o pkg/seaice
753     - check for inconsistent evp parameter/cpp-flag combination
754     - remove leftover errIO flat for obsolete name list error handling
755    o OpenAD
756     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
757    
758    checkpoint59a
759    o pkg/seaice: some parameter clarifications and a little bit of clean up
760    o pkg/thsice: rename run-time parameters:
761       himin       -> hIceMin
762       himin0      -> hThinIce
763       hihig       -> hThickIce
764       i0          -> i0swFrac
765       transCoef   -> bMeltCoef
766       frac_energy -> fracMelting
767      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
768       with default values (for now) that do not change the results.
769      remove old version of thsice vars advection in pkg/seaice.
770    o in FFIELDS.h:
771      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
772      - make pLoad & sIceLoad always available (but still only used if
773         ATMOSPHERIC_LOADING is #define).
774    o pkg/kpp: replaced _KPP_RL with _RL
775    o bug fixes for vertical diffusivity computations when both KPP and
776        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
777        are no longer updating the vertical diffusivity array
778        (passed as argument) but are (re-) setting those arrays.
779    o pkg/seaice: fix bug in evp solver, while doing that
780      - change (improve?) discretization of stress computations for both
781        cgrid-lsr and evp solver
782      - add a new routine to compute strain rates
783      - the above changes lab_sea results
784      - add no slip conditions for evp solver (off by default), lsr-version
785        may follow
786      - fix exchange for shear at Z-points (does not change lab_sea)
787      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
788        (to force the user to pick a time step since there is not "safe" way
789        of choosing it)
790      - add principal stress diagnostics
791      - rearrange fields for evp a little to avoid having to call a: too many
792        exchanges and b: exchanges for stress trensor components which we do
793        not have.
794      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
795        of evp, complete rewrite for lsr case (latter is does not yet work
796        in all cases)
797    o pkg/kpp: add code to have mixing in shelf ice caverns
798      - add myThid to all kpp routines (long overdue)
799    
800    checkpoint59
801    o pkg/exf:
802      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
803        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
804      - move exf header files from lower_case.h to UPPER_CASE.h ;
805        add missing cvs Header & Name
806      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
807      - add namelist param. selectStressGridPosition, exf_monFreq
808      - retire many _CLIM routines, and remove data.exf_clim
809        + params moved to data.exf
810        + climsst, climsss now handled by exf_set_gen, i.e.
811          climss?period=0 refers to constant field,
812          climss?period=-12 to monthly forcing
813      - split up namelists in data.exf
814    o pkg/seaice:
815      - remove seaice_exch and seaice_exch_uv
816      - remove superfluous exchange of theta
817      - add myThid to seaice_budget_ocean/ice
818      - add new interface for atmospheric wind forcing (C-grid only)
819        + new routine
820        + two new field (taux, tauy for stress over ice)
821        + removed one global field (DAIRN) for C-grid case only
822    o pkg/thsise
823      - 2nd set of modifs for thsice adjoint in conjunction with exf
824    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
825    
826    checkpoint58y_post
827    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
828      vertical diffusivity, similar to that in MOM4; turned on using
829      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
830      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
831    o Added capability for 3D specification of background vertical diffusion
832      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
833      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
834      "data" file that contains the 3D vertical diffusivity coefficients.
835    o ice dynamics (pkg/seaice) with thsice thermodynamics:
836      - add code within pkg thsice to advect & diffuse sea-ice fields
837      similar to (and will replace) what has been added in  seaice_advdiff.F,
838      but: - conserving Mass, Heat & Salt.
839           - better when using non-linear advection scheme (not yet fully tested)
840           - can also be used in atmospheric set-up (for now, only the diffusion).
841    
842    checkpoint58x_post
843    o IO option for global-file compact format:
844      - add options when generating topology (utils/exch2/matlab-topology-generator)
845      - add I/O capability (pkg/mdsio).
846      - adapt utils/matlab/rdmds.m to read this format.
847      for now long-line format not yet supported by pkg/mdsio (& exch2).
848    o shelfice: add a few diagnostics
849    
850    checkpoint58w_post
851    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
852      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
853      (and replace horiVertRatio in NH code).
854      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
855                         and tutorial_plume_on_slope (sensitive to truncation)
856    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
857      directly to drive seaice model (C-grid only)
858    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
859     - reintroduce computation of wind from stress,
860     - compute tau (in exf_bulkformulae.F) from windstress averaged to
861       mass points to avoid tau = 0
862     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
863    o rdmnc.m: make it work with "global" files created with gluemnc
864    o rdmnc.m : some improvements in dealing with singleton dimension
865      (tested on all testreport mnc output files).
866    o genmake2: disable pkg/profiles if netcdf test fails.
867    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
868    o move call to cal_readparms up to make calendar parameters/variable available
869      to all packages
870    
871    checkpoint58v_post
872    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
873      useDynP_inEos_Zc tested.
874    o pkg/exf: changes to properly interpolate/mask/scale initial fields
875    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
876      and portions thereof.  See read_cs.txt for description and examples.
877    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
878      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
879      following the great-circle arc between those 2 points.
880    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
881      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
882    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
883     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
884     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
885     - still needs work (not working with some options ; efficiency to improve)
886       and serious testing.
887     - use this scheme for temperature & salinity in 2 advection test exp.:
888       advect_xy & advect_xz, respectively.
889    
890    checkpoint58u_post
891    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
892    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
893    o testreport: add option "-skipdir" to skip some test.
894    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
895      momentum calculation.
896    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
897    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
898      remove checkpoint.F and the_correction_step.F (no longer used);
899      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
900    o add option (linFSConserveTr) to correct for tracer source/sink due to
901      Linear Free surface
902    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
903    o pkg/thsice: fix reading mnc-pickups
904    
905    checkpoint58t_post
906    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
907    o pkg/mdsio:
908     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
909       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
910       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
911     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
912     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
913       either MDS_READ_FIELD or MDS_WRITE_FIELD )
914     - new S/R (to replace MDSWRITEMETA), which allows to write more
915       informations (variable names, time ...) to meta files.
916     - modify rdmds.m to give back the meta file content.
917    o pkg/diagnostics: change vertical interpolation to be safer, and more
918       flexible (define p-levels to interpolate to in data.diagnostics);
919      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
920       diagnostic pointer.
921    o pkg/seaice: more cleaning up of seaice_growth, added many comments
922    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
923    o fix multi-category seaice:
924     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
925       SEAICE_MULTICATEGORY
926     - fix short wave heat flux
927    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
928       and allow to use EVP solver. Change forward lab_sea: test both EVP
929       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
930    o Initial check-in of lab_sea adjoint
931      (very similar to natl_box_adjoint/code_seaice)
932      * used C-grid and EVP solver
933      * used KPP, GM/Redi
934      * uses inAdExact=.TRUE.
935      * gradient checks fail for both ADM and TLM
936        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
937        f.d. gradients actually seem more problematic than ADM, TLM gradients;
938        issue is related to forward mismatch between g77 an ifort
939    o pkg/seaice: overhaul of thermodynamics
940     - growth.F and groatb.F are replaced by new routine seaice_growth.F
941     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
942     - move a few global fields out of SEAICE.h into seaice_growth.F and
943       make them 2D (FICE/QNETO/ ...)
944     - remove FO (it is the same as QNETO)
945     - introduce a few local fields to avoid modifying external fields such
946       as atemp, etc.
947    
948    checkpoint58s_post
949    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
950      changed exf_set_gen.F so that
951        genperiod=0 means input file is one time-constant field and
952        genperiod=-12 means input file contains 12 monthly means
953    o CG2D: use pre-computed solver main-diagonal (stored in common block);
954      this affects truncation error ; generate new output file for exp. which
955      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
956        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
957        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
958        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
959        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
960        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
961    o start implementation of deep-atmosphere and anelastic formulation
962    o verification: remove 2nd copy of input files and use script "prepare_run"
963      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
964    o mom_common/vecinv/fluxform: fix a few initialisation isssues
965    o profiles: fix for multithreaded case
966    
967    o diagnostics: rename few diags:
968      s/'PRESSURE'/'RCENTER '/g
969      s/'TICE    '/'oceFreez'/g
970      s/'TAUX    '/'oceTAUX '/g
971      s/'TAUY    '/'oceTAUY '/g
972      s/'SWFLUX  '/'oceQsw  '/g
973      s/DIFx/DFxE/g
974      s/DIFy/DFyE/g
975      and add few ocean-forcing diagnostics:
976      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
977    o modifications to pkg/seaice/growth.F and budget.F, which change results of
978      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
979      as actual snow thickness.  It now refers everywhere to effective snow
980      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
981    
982    checkpoint58r_post
983    o modifications to pkg/seaice/growth.F, which change results of
984      lab_sea experiment: fixes pertain to melting snow over open water, to
985      masking EVAP under sea ice, and to using the correct AREA variable for
986      computations of EVAP, PRECIP, HSNOW, and GHEFF
987    o add ability to read bathy, salt, and theta using MNC (off by def)
988    o add flooding algorithm and advection of HSNOW for pkg/seaice;
989      both are turned off by default and do no change any results
990    o seaice advection with pkg/thsice: a step toward the use of non-linear
991      advection scheme, but #ifdef or commented out for now (requires more EXCH).
992    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
993      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
994      in natl_box (affects results @ truncation level: update output.txt)
995    o multi-threading and IO:
996      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
997      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
998        (needed to work with SingleCpuIO): tested in all verif. exp.
999    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1000      affects the results (but none of the verification test uses this scheme).
1001    o Adding some pkg/diagnostics capability to pkg/seaice
1002      (will certainly be subject to changes)
1003    o ctrl: adding new control variables:
1004      lwflux, lwdown, evap, snowprecip, apressure, runoff
1005    
1006    checkpoint58q_post
1007    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1008      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1009      high_res_cube configuration by 4% on Columbia.
1010    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1011      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1012      dynamical allocation (seems to work in multi-threaded).
1013    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1014      single CPU io) so that TAF does not have to see EESUPPORT.h
1015    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1016    
1017    checkpoint58p_post
1018    o obcs: stop if obcs is used with useCDscheme = .true.
1019    o shelfice:
1020     - fix a sign error so that no slip at shelfice interface works
1021     - remove stop for combination non-hydrostatic code and shelfice. That does
1022       not mean, that the results are correct, but at least they are numerically
1023       stable
1024    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1025    o added adjoint exch routined for all exch*3d* routines
1026      and updated flow directives
1027    
1028    checkpoint58o_post
1029    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1030      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1031    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1032      and clean-up reading/writing of pickup files.
1033    o fix local version of read/write pickup (NH part) in rotating_tank/code
1034    o simplify EXCH interface:
1035     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1036     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1037    o added the regrid package
1038    o shelfice:
1039     - add a simple boundary layer scheme to reduce noise
1040     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1041    
1042    checkpoint58n_post
1043    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1044       local variable (not in common block).
1045    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1046      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1047      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1048        to work with SingleCpuIO.
1049    o add "_d 0" to real constant of pkg/cfc subroutines ;
1050       update exp. cfc_exemple & tutorial_cfc_offline output files.
1051    o multi-threading and IO:
1052      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1053        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1054      - barrier before and after reading.
1055      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1056      - avoid using MDS_WRITELOCAL for LAND pkg output.
1057      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1058        common-block variables ; Allows multi-threading with master-thread IO.
1059    o change default MAX_NO_THREADS from 32 to 4 ;
1060      and stop cleanly when MAX_NO_THREADS is too small.
1061    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1062    
1063    checkpoint58m_post
1064    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1065       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1066    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1067       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1068       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1069    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1070        add MITgcm_tutorials (= code + all the tutorials)
1071    o ecco, option to compute cost for total ssh (mean+anom)
1072    o consistent with addition of ptracer and ssh in pkg/profiles
1073    o profiles: adding ptracer and ssh
1074    o testreport: change multi-test output-file name
1075      (from output.txt.{name} to output.{name}.txt)
1076    o profiles: now ok for mutli-tiles case
1077    o seaice: add 4 parameters for different advection schemes for area,
1078      (effective) seaice thickness, enthalphy, and snow height. Their default
1079      is the standard parameter SEAICEadvScheme
1080    o calc_gw:
1081     - add cosFacU in zonal viscous flux (harmonic.visc.).
1082     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1083       of tutorial_plume_on_slope.
1084    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1085    o calc_gw: true flux-form, account for horizontal grid spacing.
1086      update rotating_tank results, but not plume_on_slope (affected at
1087      truncation level, 11 digits).
1088    
1089    checkpoint58l_post
1090    o calc_gw:
1091     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1092     - remove side-drag for now (need to fix it); update plume_on_slope results.
1093     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1094    o commit code to make SST/SSS weights spatially variable
1095      (based on either variable in-situ or variable initial T/S weights)
1096    o pkg/ecco:
1097      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1098        now based on horizontally varying weights wthetaLev, wsaltLev
1099      * cost_averagesflags now returns year indices in addition to day, month
1100      * sflux balance is performed on annual basis
1101        (sflxumm, sfluxmm2, bal_sfluxmm)
1102      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1103        including separate counting and multipliers
1104    o pkg/rbcs
1105      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1106    
1107    checkpoint58k_post
1108    o testreport:
1109     - always build in dir. "build" (if not there, mkdir build instead of building
1110       & running in input)
1111     - run in dir run (if it exists), in build otherwise.
1112     - call prepare_run (if input/prepare_run exists)
1113     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1114    o pkg/exf modifications to interpolation and rotation routines for more
1115       reasonable treatment of North Pole singularity: for tracers North Pole
1116       value is set to northernmost zonal-mean value, for zonal velocity it is
1117       set to zero, and for meridional velocity it is set to northernmost value.
1118    o pkg/exf/exf_check_range.F
1119     - add tile index to diagnostics and move stop statement to the very
1120       end of the routine.
1121    o pkg/diagnostics: (diagnostics_main_init.F)
1122      define title of isomorphic variables according to the current config.
1123    o pkg/thsice with pkg/seaice dynamics:
1124    - fix domain of computation (interior only, required for exf) and do exchanges
1125    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1126    o towards a standard way of dealing with multi-threading in MONITOR
1127      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1128    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1129       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1130    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1131    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1132    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1133       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1134    o tracer advection:
1135     - clean-up and simplify calc_common_factors.F
1136     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1137       advection subroutine (but still not used within DST advection S/R)
1138    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1139    
1140    checkpoint58j_post
1141    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1142      from file (collects calls previously in FORWARD_STEP)
1143    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1144    o adjoint store dir. adjusted accordingly
1145    o genmake2
1146      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1147    
1148    checkpoint58i_post
1149    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1150      on wind stress (SEAICEstressFactor defaults to 1.)
1151    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1152      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1153    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1154      on CS-grid: no longer loosing mass.
1155    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1156    o pkg/ggl90: fix sloppy output and fix a bug
1157    o pkg/seaice: added SEAICEuseEVPpickup parameter
1158      - Set to false in order to start EVP solver with
1159        non-EVP pickup files when using SEAICEuseEVP
1160      - fix sign error in diffusion in seaice_calc_rhs
1161    
1162    checkpoint58h_post
1163    * Modifications for bottom topography control
1164      o replace hFacC by _hFacC at various places
1165      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1166      o add non-self-adjoint cg2d_nsa
1167      o update autodiff support routines
1168      o re-initialise hfac after ctrl_depth_ini
1169      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1170    * Adding verification for 5x5 box (4-layer) bottom topography control
1171    
1172    checkpoint58g_post
1173    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1174       used for mean seasonal cycle, mean diurnal cycle); add an example
1175       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1176    o pkg/ggl90:
1177      - add parameter (minimum surface kinetic energy)
1178      - fix bug (avoiding division by zero)
1179    o couple pkg/thsice to pkg/seaice:
1180      - modify advection in seaice to accomodate new scalar fields to be advected
1181      - only muliDimAdection scheme work with seaice/thsice
1182      - mapping of thsice-variables to seaice-variables, back and forth
1183      - does not break the verification experiments, but does not give the
1184        desired results either
1185    o pkg/seaice
1186      - make (default) second order advection a bit less confusing?
1187    
1188    checkpoint58f_post
1189    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1190      to pkg/seaice):
1191      - new routines thsice_map_exf and thsice_get_exf provide the interface
1192      - add an additional formal parameter to thsice_solve4temp
1193    o pkg/exf:
1194      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1195      - correct Stefan-Boltzmann constant
1196      - new parameter for longwave surface emittance
1197      - separate some stuff from exf_bulkformulae into new routines  
1198        exf_radiation, exf_wind
1199      - add new parameters and constants: longwave emissivity for ocean, ice
1200        and snow, evaporation parameters over ice
1201      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1202        either wind from stress or stress from wind
1203    o pkg/thSIce:
1204    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1205    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1206       and THSICE_CALC_THICKN
1207    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1208    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1209      to make debugging easier.
1210    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1211    o pkg/bulk_force:
1212      - clean-up comments and parameters ;
1213      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1214    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1215      generate new output for test-experiment: aim.5l_cs.thSI
1216    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1217      testreport accordingly
1218    
1219    checkpoint58e_post
1220    o SEAICE_CGRID adjoint done
1221    o R_STAR adjoint implemented.
1222      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1223      * need to sort out init. of h0facc, etc.
1224    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1225      to be able to use it in pure forward.
1226    
1227    checkpoint58d_post
1228    o upgrade simple test-experiment to tutorial example:
1229     step.1: duplicate the experiment and (step.2) will remove the old copy.
1230      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1231      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1232      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1233      tutorial_global_oce_biogeo    <- copy of dic_example
1234      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1235      tutorial_plume_on_slope       <- copy of plume_on_slope
1236      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1237      tutorial_global_oce_optim     <- empty for now (David ?)
1238      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1239     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1240    o correct a sign problem in cost_scat.F
1241    o obcs and ptracers: fix boundary conditions for advections schemes
1242      with larger stencil
1243    o thsice adjoint: start
1244    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1245      completeness
1246    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1247      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1248    o ptracers adjoint:
1249      * avoid extensive recomputatations
1250      * fix missing re-init. of gptr (missed by TAF)
1251    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1252      me to turn off the excessive output to STDOUT that this package produces
1253    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1254      and add those terms in Vector-Invariant formulation.
1255    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1256      if the control period (xx_hfluxperiod etc) is 0
1257    o in profiles pkg, clean routines and fix details
1258    o in ecco pkg, reading ssh data:
1259      fix problem in case the model does not start at iter0=0
1260    o fix mnc-pickup/restart for ptracers
1261    o new package prifiles:
1262      code to compute profile-based cost by Gael Forget
1263      (modifs in ecco, ctrl, autodiff)
1264    o Benign bug fix in initialization (spotted by M. Mazloff) of
1265      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1266    
1267    checkpoint58c_post
1268    o adjoint: finish NLFS adjoint and provide reference output in
1269      verification/global_ocean.90x40x15/results_ad_nlfs
1270    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1271      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1272      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1273      with SEAICE_CGRID defined.
1274    o move calendarDumps from "data" to "data.cal" and clean-up the code
1275      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1276    o add useEXF & useCAL flags (for now, set in hard-coded way)
1277    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1278      (were missing in NH mode, and wrong in quasihydrostatic mode).
1279      waiting for Chris updated version of calc_gw to add those CALLs.
1280    o fix bug in quasihydrostatic S/R ;
1281      add a test for this option: global_ocean.90x40x15.qshyd
1282    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1283      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1284    o add on/off flag useOffLine for package OFFLINE
1285    o seaice:
1286      - modify advection so that it works also on the C-grid
1287      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1288        problem in multi-tile runs with C-grid
1289      - add flags for clipping ice velocities and/or masking solver forcing
1290      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1291        C-grid solver
1292      - added a few comments to seaice_diffusion.F
1293      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1294        are now exclusive)
1295      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1296        required re-ordering the code a little:
1297       + make DAIRN global variable (defined in SEAICE)
1298       + move computation of the viscosities eta and zeta into a new separate
1299         routine (because I need to recompute them in seaice_ocean_stress.F)
1300    
1301    checkpoint58b_post
1302    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1303      update output.txt of exp. aim.5l_cs.thSI
1304    o various mnc cleanups and improvements:
1305      + shrink lookup tables by factor of ~4
1306      + better error reporting when running out of lookup space
1307      + able to handle longer path/file names (up to 500 chars)
1308    o adjoint:
1309      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1310      - TBD: "hidden" mom_vecinv recomp. in dynamics
1311    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1312     (allow to differentiate between forcing components using new integer flags:
1313      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1314     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1315    o ecco
1316      - enable trend removal from SSH anomaly obs.
1317    o adjoint
1318      - a fix for PmEpR when #undef EXACT_CONSERV
1319      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1320      - try to fix "hidden" recomp. in forward_step for NLFS
1321        (NLFS seems broken sometimes after I checked it in)
1322    o seaice:
1323     - add c-grid version of the dynamic solver:
1324       + three new routines that are the c-grid substitute lsr, dynsolver
1325         and ostres
1326       + put a few fields that were local to dynsolver into global common
1327         blocks, so that I can move the computation of stresses etc into
1328         seaice_lsr (saves coding but may break the adjoint).
1329     - replace more hardwired parameters by runtime parameters
1330     - add ice masks that mask the rhs of the implicit solvers where there
1331       is no ice (commented out in seaice_dynsolver, because i am not sure
1332       if this works properly), eventually this should replace the clipping
1333       of ice velocities in seaice_dynsolver to +/-40cm/s.
1334    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1335      include it only where its needed
1336    o move balancing of fluxes before the call of external_forcing_surf
1337    o seaice:
1338      - correct units of turning angles (now they are really in degrees)
1339      - move computation of GWATX/Y out of main routine into dynsolver
1340      - initialize GWATX/Y in seaice_init
1341    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1342      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1343    o seaice: add runtime flags for turning angles (default to zero)
1344    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1345      and trend from exf forcing and ctrl control adjustments
1346    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1347      (since checkpoint57x_post)
1348    o change the default rotation period to 86164.s = the Earth rotation
1349    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1350      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1351    o seaice advection: add code for choosing between the default (2nd order
1352      central differences) and multiDim advection schemes provided by
1353      pkg/generic_advdiff
1354    o seaice:
1355      - removed all references to SEAICE_GRID.h fields from
1356        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1357        (cubed-sphere configuration will change a little)
1358      - grid computations in seaice_init are obsolete now.
1359      - cleaned up code a little so that is easier to read (hopefully).
1360      - added new (better?) discretizations of default advection and diffusion
1361        (turn on with SEAICEuseFluxForm)
1362      - replace 1 in 3d global fields by kSurface in growth.F
1363      
1364    checkpoint58a_post
1365    o seaice:
1366      - bug fix in advect.F
1367    o shelfice:
1368      - separate shelfice load anomaly from pload (breaks with time
1369        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1370        Its default is 0., but it may be computed more cleverly from (unknown)
1371        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1372        done offline. A good approximation of the pressure load anomaly is
1373        necessary to avoid large initial adjustment processes underneath
1374        deep-reaching shelfice.
1375      - small fix in ISOMIP shelfice_thermodynamics
1376      - add more sophisticated thermodynamics of Hellmer (1989), this is
1377        now the default
1378      - give a few constants more intuitive names
1379    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1380      if bulk formulae are used in long integration (especially EmPmR). Turn
1381      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1382      if balancePrintMean, the imbalance that is substracted is printed to
1383      STDOUT.
1384    o fix bug (typo) in obcs_apply_eta.F
1385    o add a new package shelfice which enables us to model the circulation
1386      underneath shelf-ice with draughts of hundreds of meters.
1387     - works
1388     - to do: + include improved thermodynamics
1389              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1390                instead of new field kTopC
1391              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1392                instead of new field R_shelfIce and new code in ini_depth.F
1393                and ini_mask_etc.F?
1394              + adjust vertical mixing schemes?
1395    o seaice pkg:
1396     - add a cpp-flag to include a simple formula for a salinity dependent
1397       freezing point of sea water at the surface
1398     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1399       meridional stresses are now different (and hopefully correct)
1400    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1401       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1402       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1403    o pkg/diagnostics: add options and parameters for regional-statistics
1404       diagnostics ; define regions by reading a region-mask from a file
1405       (might add other options later)
1406    o pkg/bulk_force:
1407     - add option and parameters to use AIM surface-flux formulae.
1408     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1409       others forcing fields (defined in PARM05, parameter file "data") are loaded
1410       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1411     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1412     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1413     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1414       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1415     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1416    
1417    checkpoint58
1418    o add "--embed-source" option to genmake2 which, when the supporting
1419      tools can be compiled (as determined by genmake2) will turn on the
1420      embed_files package which then embeds the entire MITgcm source code
1421      (*.[fFhc] + Makefile) used for the build within the executable
1422      - requested by CNH but off by default
1423      - adds a paltry <9MB to the mitgcmuv executable in most cases
1424      - only writes the output when useEMBEDSRC in eedata is true
1425    o clean up 3-dim. relaxation codes:
1426      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1427      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1428      * Thanks to Tom Haine for testing!
1429    
1430    checkpoint57z_post
1431    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1432      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1433    o fix the pickup behavior for obcs in combination with ptracers
1434    o fix a bug in ptracers_external_fields_load
1435    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1436      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1437    o transfered surface NH pressure to eta field (if exactConserv).
1438    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1439         and update lab_sea output.txt file.
1440    o completing 3-dim. relaxation code: additional term
1441         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1442      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1443      * At compile time, in "EXF_OPTIONS.h" set
1444          #define  ALLOW_CLIMTEMP_RELAXATION
1445          #define  ALLOW_CLIMSALT_RELAXATION
1446      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1447          tauThetaClimRelax3Dim = 15552000.0,
1448          tauSaltClimRelax3Dim  = 15552000.0,
1449      * 3 cases:
1450          1) Use a constant-in-time 3-dim. field
1451          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1452          3) Real-time relax. to time-evolving prescribed field
1453    o Adding Laplacian-type smoothness constraint on
1454      initial and boundary (forcing) controls (ic, bc)
1455      * enable at compile-time via
1456        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1457      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1458      * Absolute scale somewhat unclear so far
1459      * no area weighting was included since no other cost term does so far
1460    
1461    checkpoint57y_post
1462    First step for a NLFS adjoint
1463    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1464    o new init. routines for calc_r_star, calc_surf_dr
1465    o still need to deal with ini_masks_etc
1466    o testreport seemed happy
1467    checkpoint57y_pre
1468    
1469    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1470    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1471    o add new offset feature to offline pkg (plus minor cleanup)
1472    o cfc fixes for final year of integration
1473    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1474      be in GCHEM_OPTIONS).
1475    
1476    checkpoint57x_post
1477    o fix testreport Pb in multiple test experiment.
1478    o cleanup our namelist syntax in verification:
1479      - make it more F95 standards compliant (some work still needed)
1480      - allows the vast majority of our tests to work with gfortran
1481    o Non-Hydrostatic:
1482     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1483     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1484    o Allow to apply AB on T,S rather than on AB(gT,gS):
1485     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1486     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1487       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1488     - need a "clever" read_pickup to restart from the other AB formulation
1489    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1490    o remove some unused variables (reduces number of compiler warnings)
1491    o adjoint
1492      * Disable useVariableViscosity for adjoint for time being
1493        (there are a number of extensive recomputations)
1494      * Initialize certain variables needed for adjoint
1495    
1496    checkpoint57w_post
1497    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1498                 fix the singleCpuIO RS version of MDSWRITEFIELD
1499       and add a WARNING if using globalFiles=T with multi-processors.
1500    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1501      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1502    o tracer advection scheme:
1503      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1504       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1505       was not very convenient).
1506      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1507       (further tests needed for the implicit DST & Flux-Limiter schemes).
1508    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1509      and sRef for convenience, handy, when you want to initialize
1510      ptracers in a large domain with a constant non-zero value. Also,
1511      untangle ptracers_init.F a little.
1512    
1513    checkpoint57v_post
1514    o change dome exp. to use variable viscosity in side-drag terms.
1515    o remove all the files from the cfc_offline test since they are now
1516      incorporated into tutorial_cfc_offline which has been producing
1517      identical results for a few days of testing
1518    o add new parameter: sideDragFactor to enable half-slip-side BC
1519      and change side-drag S/R to use viscosity from mom_calc_visc
1520      (can switch back by setting sideDragFactor=0.); affects results at
1521      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1522       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1523    o vorticity & strain are now computed without masking, to account for
1524      no-slip-side BC in variable viscosity calculation ; mask is applied
1525      anyway later on, before computing advection/coriolis terms.
1526    o modify exp4 to test new obcs support for reading from external files
1527      and for passive tracers
1528    o fix behavior of ptracers_monitor when monitor output is written to a
1529      netcdf-file; still not independent of monitor.F (writes in the same
1530      file).
1531    o change default value of tRef (put a uniform, meaningful value for ocean
1532      & atmos) and initialize sRef (was missing, as Martin mentioned).
1533    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1534      to be proportional to enstrophy dissipation length.  Thus,
1535       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1536      This is now consistent with Smagorinsky and with the manual.
1537    
1538    checkpoint57u_post
1539    o OBCS and PTRACERS: add open boundary support for passive tracers
1540      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1541        OB-values from file; this is not different from the way theta and salinity
1542        are treated
1543      - however, Orlanski-radiation conditions are not supported, and the model
1544        will stop if you use pTracers and Orlanski at the same time.
1545      - beefed up the rountine obcs_external_fields_load: now only those open
1546        boundary values are overwritten with values from files for which there
1547        are really files, otherwise the OB-fields remain untouched. This makes
1548        it possible to use different OBs at different ends of the domain (as
1549        with EXF)
1550    o reduce number of exch calls in shap_filt (s2).
1551    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1552      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1553    
1554    checkpoint57t_post
1555    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1556    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1557      same truncation, independent of the face number: affects affects several
1558      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1559    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1560      note that biharmonic viscosity + no-slip was not tested in any experiment.
1561    o fix bug in non-linear free-surf side-drag ; generate new output for
1562      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1563    o make mnc honor the writeBinaryPrec flag for most kinds of output
1564    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1565    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1566      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1567    o add brackets in multi-terms sum to get same truncation, independent of
1568      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1569      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1570    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1571      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1572      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1573      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1574      Suggested values of viscosity parameters found in mom_calc_visc.
1575      Many new viscosity diagnostics available.
1576    
1577    checkpoint57s_post
1578    o Add clearing-house for viscosity calculations, mom_calc_visc and
1579      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1580      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1581      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1582      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1583      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1584      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1585      ViscAhStrain and viscAhTension are now retired.
1586    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1587    o In response to JMC's bug report, genmake2 now ignores any soft-links
1588      that it finds in the *current* directory when searching for files.
1589      Soft-links found in any other source directories will still work as
1590      they did before.
1591    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1592      a C routine to unlimit the stack size
1593    o mnc-ify pkg/aim snapshot vars
1594    o mnc-ify pkg/land as requested by Daniel
1595    o various changes to mnc including:
1596      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1597      - output can now be grouped so that all files within a group
1598          change the ITER portion of their names in lock-step together
1599      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1600          and works with both EXCH1 and EXCH2 (but needs more testing)
1601      - writing works for all verification test cases w/ g77 on Linux
1602    
1603    checkpoint57r_post
1604    o make MNC variable initialization happen earlier
1605    o add diagnostics for (almost) each term of the momentum Eq.
1606    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1607    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1608    o remove MINIMAL_TAVE_OUTPUT option ;
1609      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1610    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1611      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1612    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1613    o add time-dependent SST, SSS control
1614    o cost terms in ecco/ modularized (new cost_generic.F)
1615    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1616    o new infrastructure for seaice model vs. obs misfits in seaice/
1617      * driver from the_main_loop.F is seaice_cost_driver.F
1618      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1619      * gradient check in Exp. 6a of natl_box_adjoint/
1620    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1621      (see README file)
1622    
1623    checkpoint57q_post
1624    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1625    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1626      - bug was reported by Jean-Michel and Ian Fenty
1627    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1628      update exp. cpl_aim+ocn output.
1629    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1630      Needed for high-res. runs with large global files
1631      to be able to limit tapelev size
1632    o Changed some tests for adjoint:
1633      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1634      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1635      * global_ocean.90x40x15/ back to default 3-level checkpointing
1636    o Modifications to enable scripted COMMON to MODULE conversion
1637      * verification/OpenAD/code/ has necessary scripts and description;
1638      * converts, compiles and runs successfully;
1639    
1640    checkpoint57p_post
1641    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1642    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1643      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1644    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1645    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1646      (was already the case for dissipation with mom_vecinv,
1647       and also the case for grad.PhiHyd when staggered-timeStep)
1648      This will allow to put dissipation out-off the AB time-stepping.
1649     Unfortunately, affects truncation error. Update output of exp. that "fails"
1650      (cg2d matching number) and leave the others for later: front_relax(10),
1651      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1652      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1653    
1654    checkpoint57o_post
1655    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1656      (2) its ready to be documented during the 20050801 DocFest
1657    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1658      for ideal_2D_oce and lab_sea on linux_ia32_g77
1659    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1660      in global1x1_tot/code_seaice_adj to access indices 32, 33
1661      (worth another tag)
1662    
1663    checkpoint57n_post
1664    o adding precip control xx_precip 32
1665    o adding swflux control xx_swflux 33
1666    o Replacing 10 forcing penalty cost routines by 1 generic.
1667    o Implementing partitioning in time-mean and variable adjustment
1668      for atmos. state.
1669    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1670    o in natl_box_adjoint:
1671      * updated exp 1 to 10
1672        (but does not have time-mean vs. variable split results yet)
1673    o updated global1x1/*_seaice_adj/
1674      to incorporate latest changes
1675    o enable useSingleCpuIO for mdsio vector routines
1676      (applies in particular to tapelev I/O)
1677    o removed inefficient K-loop in all active_file*control*.F
1678    
1679    checkpoint57m_post
1680    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1681      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1682    o pkg/exch2: filling of face-corner halo regions is optional
1683      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1684    
1685    checkpoint57l_post
1686     tag before updating tutorials (pre-release-2)
1687    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1688       for output and interpolation of input fields onto model grid)
1689    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1690       Affects results of exp. rotating_tank ; update output.txt.
1691    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1692          and taking the square quantity and/or using a fraction-weight field.
1693    o fix aim_diagnostics_init.F mate numbers.
1694    o add mnc output capability to diagnostics/diagstat and update
1695      our cvsignore files for the ACSII output generated
1696    
1697    checkpoint57k_post
1698    o lab_sea now uses diagnostics package and provides a suite of
1699      new EXF diagnostics output.
1700    
1701    checkpoint57j_post
1702    o exf
1703      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1704        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1705        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1706      * extended diagnostics output
1707        - now includes all EXF variables
1708        - hs, hl moved to common block
1709        - separate S/R for diagnostics, called after ctrl vector is added
1710        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1711        - EXFqnet contains true Qnet (i.e. includes qsw)
1712      * updated verif. lab_sea, global_with_exf
1713      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1714        to ensure that diagnostics sees a true EXFqnet
1715    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1716    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1717      several times with different frequencies.
1718    o mnc-ify the thsice package as requested by Daniel Enderton
1719      - the monitor--MNC output needs work
1720      - many attributes need to be added (most are currently blank)
1721    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1722      - many attributes need to be added (most are currently blank)
1723    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1724    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1725    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1726      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1727         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1728    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1729     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1730    
1731    checkpoint57i_post
1732    o Diagnostics package was changed: diagnostic allocation is now deactivated
1733      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1734    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1735      add 1rst Order upwind vertical Shear.
1736    o add a quick fix for A/B checkpointing in OFFLINE mode
1737    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1738      end-run around the C/Fortran linking horror in eesup/src/timers.F
1739    o added pkg/runclock: allows user to terminate run based on wall clock
1740    o added non-hydrostatic scaling parameter: nh_am2
1741    o pkg/my82: futile attempt to make results compiler-independent by adding
1742      some "_d 0", etc. no effect.
1743    o for mnc output, fill the 'T' coordinate var with myTime and create a
1744      separate 'iter' variable for iteration count
1745    o pkg/diagnostics:
1746      add new capability: output of Global/Regional & per-level statistics ;
1747      tested against monitor output (including land & thSIce) on various exp.
1748    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1749    
1750    checkpoint57h_done
1751      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1752      data.diagnostics, data.gchem, data.ptracers) is done.
1753    
1754    o pkg/diagnostics: prepare for Global/Regional statistics.
1755      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1756    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1757      and rename it: DIFFERENT_MULTIPLE
1758    
1759    checkpoint57h_post
1760    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1761    o pkg/diagnostics: change output frequency, now in seconds (instead
1762      of Nb of iterations). This requires to change data.diagnostics.
1763    checkpoint57h_pre
1764    
1765    o in mnc, let the user create the output dir if both mnc_outdir_date
1766      and mnc_outdir_num are false
1767    o add fflags() to pkg/diagnostics which allows one to specify, on a
1768      per-file basis, the file precision [default behavior is unchanged]
1769    o added diagnostics to pkg/kpp, including computation of mixed layer
1770      depth based on a temperature/density criterion
1771    o updated verification/natl_box to test the new pkg/kpp diagnostics
1772    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1773    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1774    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1775      not mnc -- this mistake was found by JMC and is now corrected
1776    
1777    checkpoint57g_post
1778    o add Adams-Bashforth 3rd Order time stepping:
1779      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1780      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1781    checkpoint57g_pre
1782    
1783    o make lambda[Theta,Salt]ClimRelax spatially varying
1784      (default remains spatially uniform constant based on tau)
1785    o added new control variables
1786      * init. uVel, vVel, etanN
1787      * lambda[Theta,Salt]ClimRelax
1788    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1789      (suggested by G. Forget)
1790    
1791    checkpoint57f_post
1792    o add parameter "baseTime" = model base time = time at iteration zero
1793      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1794      account for baseTime shift
1795    o move Coriolis arrays from PARAMS.h to GRID.h
1796    checkpoint57f_pre
1797    
1798    o mnc-ifying the seaice package
1799    o introduced an alternative length scale calculation for use in the limiting
1800      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1801    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1802    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1803      as well as grad(vort3).  Made it compatible with both approximate form
1804      for the cubed sphere and full form of these gradients.  Added flag
1805      useFullLeith to select between approximate and full form.  
1806    o add "d0" in getcon.F to reduce differences between compilers/platforms
1807      update output.txt of exp. fizhi-gridalt-hs
1808    o change port_rand funtion to allow to set the seed.
1809    o fix obscure MNC bug involving conversion between reals and integers
1810      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1811        new version is now more standards-compliant
1812    o adjoint-related modifications
1813      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1814      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1815      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1816    
1817    checkpoint57e_post
1818    o Adding eddy stress controls a la Ferreira et al.
1819    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1820    
1821    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1822      update output.txt of exp. fizhi-gridalt-hs
1823    o add more "Z" dimensions and associated coordinate vars to MNC
1824    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1825    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1826      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1827      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1828      months and years.  Requires pkg/cal.
1829    o diagnostics: add pickup functionality
1830      - off by default for backwards compatibility
1831      - current version only uses MDSIO -- MNC will be added
1832    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1833    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1834    
1835    checkpoint57d_post
1836    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1837    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1838      output from the diagnostics package
1839    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1840    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1841      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1842    o add coordinate variables to the MNC output from the diagnostics package
1843    o change MNC-flags default value: true when useMNC=TRUE
1844    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1845      the ability (off by default) to read the grid information using MNC
1846    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1847    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1848    o do snap-shot diagnostics at the middle of the time-interval (instead of
1849      at the end).
1850    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1851      new test for AIM with thSIce + slab-ocean
1852    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1853    o move state variable diagnostics to the beginning of the time step ;
1854      (note: still needs some work specially for snap-shot diagnostics)
1855      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1856    
1857    checkpoint57c_post
1858    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1859    o generate new output.txt files on faulks with g77 & the new -ieee option
1860    checkpoint57c_pre
1861    
1862    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1863      update output.txt of exp. global_ocean.90x40x15
1864    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1865      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1866    o add saltFlux(+File) forcing capability with periodicExternalForcing
1867    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1868    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1869    o improvements for the MNC output from DIAGNOSTICS:
1870      - correct handling of the unlimitied dimension
1871      - all dims now have associated coordinate variables
1872      - variables located at U, V, and Corner ("Z") points are now written
1873        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1874        *all* data points are output
1875    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1876    o added pkg/seaice/seaice_monitor.F
1877    o mdsio_readfield.F can now read files visible only to master MPI process.
1878    o pkg/seaice: some test code for ice-modified ocean stress
1879    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1880      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1881      spurious negative numbers for precipitation and humidity.  Will cause
1882      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1883    o pkg/ctrl/
1884      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1885        May be enabled via doPackDiag
1886      *  introduce z-scaling of
1887         + gradient (doZscalePack) and
1888         + control (doZscaleUnpack)
1889    o pkg/mdsio/
1890      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1891      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1892    
1893    checkpoint57b_post
1894    o simplify options in diagnostics_fill arguments (remove weird combinations)
1895    o fix MNC coordinate variables so that they now contain per-face index
1896      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1897      general, EXCH2 grids are only aligned to a "local" coordinate system
1898    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1899    o Implement instantaneous output within pkg diagnostics:
1900      setting a negative frequency in data.diagnostics produces
1901     "snap-shot" output (as opposed to time-average if freq > 0)
1902    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1903      NOTE: change ptracer diagnostics name: use 2 characters to work with
1904            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1905    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1906      becomes the coordinate variable for the 'T' dimension
1907    o add CF-style coordinate variables to MNC
1908      - just a first cut:  numbers are meaningless on the cubesphere and
1909        missing along the T axis but otherwise it works!
1910    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1911    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1912    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1913      this is based directly on what the model compute, so that the content of
1914      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1915    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1916    o clean up build options files for SunOS, in particular
1917      - remove -traditional from xmakedepend
1918      - change -xarch=v9 to -xarch=native for f77
1919      - restore use of make (not gmake)
1920      - add CC=gcc if using g77
1921    o changes per discussion of AM, JMC, & EH3 today:
1922      - move redundant "grid" variables out of "state" -- in preparation of
1923        creating proper CF-style coordinate variables and in recognition
1924        that any/all grid variables can be easily copied (eg. w/NCO) from
1925        the grid files into any of the other NetCDF files
1926      - *always* output grid variables with MDSIO (this will eventually be
1927        changed)
1928      - output MNC grid file if useMNC is true
1929    o every instance of _END_MASTER() has been found and replaced with
1930      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1931      preprocessors
1932    o re-arrange diagnostics pkg initialisation:
1933     - allow each package to extend the available diagnostics list
1934     - add some checking and fix small problems (multi-threaded, ...)
1935     - new S/R diagnostics_fill (replace fill_diagnostics):
1936       look through the short list of active diag. (instead of the long list)
1937       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1938    
1939    checkpoint57a_post
1940    o this set of changes restores TAMC compatibility
1941      tested for global_ocean.90x40x15 adjoint on trough
1942      (what a pain)
1943    
1944    checkpoint57a_pre
1945    o some modifs in tools/build_options for sunos
1946    o call ctrl_pack for ctrl at end for optimcycle=0
1947    
1948    checkpoint57
1949    o add horizontal bi-harmonic viscosity for vertical velocity
1950      - new parameter viscA4W (defaults to viscA4)
1951      - affects only non-hydrostatic code
1952      - to be done: no-slip lateral boundary conditions
1953    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1954    o implement Implicit Vertical advection for pTracers
1955    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1956      (implemented also for implicit vertical diffusion & advection)
1957    o OBCS: extend application of tracer open boundary conditions
1958      to a strip beyond the boundary of width Olx/Oly
1959    o add call monitor to TAF set of required calls (flow directives)
1960      and include in natl_box_adjoint
1961    o untangle a few ifdefs related to cost, ctrl, autodiff
1962      untangel a few ALLOW_ECCO_OPTIMIZATION
1963    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1964      (theta2, salt2 in ecco_cost_weights)
1965    
1966    checkpoint56c_post
1967    o OBCS as control variables
1968      - update ctrl_ad_diff.list, obcs_ad_diff.list
1969      - remove balance of obcs controls from default
1970      - fix index bug nobcs in ctrl_init
1971      - fix dummy fields filen in ctrl_pack
1972      - add dummy weights for obcs
1973    o lsopt: comment out fort.94 output
1974    o optim:
1975      - remove unnecessary header files
1976      - adjusted namelists
1977      - add xerbla.F to Makefile
1978    o exf:
1979      - multiple modifications of exf_check_range
1980      - unit change in exf_init_runoff from [m/year] to [m/s]
1981    o mdsio:
1982      - i/o-vector change debugLevel from debLevA to debLevB
1983    
1984    checkpoint56b_post
1985    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1986      is called from DO_THE_MODEL_IO
1987      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1988      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1989      - clean up PTRACERS_WRITE_TIMEAVE a little
1990    o add another verification experiment that tests both the cfc-pkg and
1991      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1992      reactive tendencies treated inline with regular timestepping
1993    o testreport previously did a lousy job of comparing small numbers, so
1994      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1995      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1996      testreport.
1997    o ptracers_monitor: bug fix for MPI
1998    
1999    checkpoint56a_post
2000    o GCHEM: finish reorganizating the package
2001      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2002        (introduces another 3D-array for each passive tracer, but only if
2003        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2004        gchemTendency is not needed because the timestep is done separately)
2005      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2006      - GCHEM is now---more or less cleanly---separate from PTRACERS
2007      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2008        so clear to me how that should be done in a general way.
2009    o CFC: improve formatting of output in CFC_ATMOS
2010    o PTRACERS:
2011      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2012        that ALL experiments with ptracers enable can be checked. This makes
2013        GCHEM_MONITOR obsolete.
2014      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2015        monitorFreq
2016      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2017    o add PTRACERS (PTR0[1-5]) to testreport output
2018    o exf_check_range:
2019      * default changed to .TRUE.
2020      * will check values for niter0 if debLevA, every timestep if debLevB
2021      * STOP in exf_check_range if 'out of range'
2022      * range chosen generous to allow for potential extema
2023      TBD: a version with stricter range
2024           permitted range would be runtime parameters
2025  o GMredi:  o GMredi:
2026    - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;    - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2027    - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.    - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
# Line 11  o GCHEM: Line 2030  o GCHEM:
2030    - move call to GCHEM_FORCING_SEP, so that it is now called before    - move call to GCHEM_FORCING_SEP, so that it is now called before
2031      the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP      the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2032    - introduced a useGCHEM runtime flag and applied it everywhere.    - introduced a useGCHEM runtime flag and applied it everywhere.
2033      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2034        this flag is now only visible within GCHEM-pkg routines.
2035      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2036        be replaced by a 3D array that is computed before thermodynamics; for
2037        this, the tracer ID iTracer had to be included into the parameter list
2038        of ptracers_forcing
2039      - set up forward_step to call gchem_forcing, that will replace
2040        gchem_forcing_int in ptracers_forcing
2041      - cleaning up
2042  o small cleaning of exch2: remove files that are also in eesupp/src  o small cleaning of exch2: remove files that are also in eesupp/src
2043    
2044  checkpoint56  checkpoint56

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