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revision 1.75 by jmc, Thu Jun 20 23:52:03 2002 UTC revision 1.1033 by jmc, Thu Oct 23 15:31:34 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    checkpoint61e
8    o gmredi (Visbeck-variable-K):
9      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
10      - change computation of Visbeck-K where Slope > Smax :        
11        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
12        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
13    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
14      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
15    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
16    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
17      does not become too large (to avoid precision problems in implicit-diffusion
18      solver); update ideal_2D_oce output.
19    o pkg ggl90:
20      - in ggl90_cal.F: compute only one set of visc/diff, used to
21        step forward TKE/T/S/momentum
22      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
23        have Prandlt =1)
24    o gmredi (fm07):
25      - add lower limit on Transition layer thickness + lower limit on 1/lambda
26      - allow to set few more params from data.gmredi
27    o pkg ggl90:
28          - add missing sqrt(2) factor in computation of mixing length
29            scale in ggl90_calc.F
30            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
31    
32    checkpoint61d
33    o adjoint modifs
34      - adapt to new field rhoInSitu
35      - allow to revert from StoreDynVars2D, StoreDynVars3D
36        to individual fields
37        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
38    o store 3-D (in-situ) density in commom block (DYNVARS.h)
39     - save 1 rho computation.
40     - no longer modify T & S inland when using down_slope pkg.
41    o gad_som : allow to switch to SOM advection for T & S without corresponding
42      pickup files (using new S/R: MDS_CHECK4FILE).
43    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
44      (for useSingleCpuIO to work in multi-threaded)
45    o pkg/shelfice:
46     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
47       with SHELFICEtopoFile in data.shelfice
48     - move code for reading ice shelf topography and modifying hFacC into separate
49       subroutines of the shelfice package
50     - separate initialisation of "fixed" and "variable" variables
51     - kTopC is not (yet) replaced by kSurfC, although this is possible
52    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
53    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
54      and rename:
55      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
56      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
57    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
58    
59    checkpoint61c
60    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
61      to add mass source/sink of fluid in the interior (3-D generalisation
62      of oceanic real-fresh water flux).
63    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
64    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
65    o new pkg: down_slope
66      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
67      - presently, modify T & S inland (dwnslp_calc_rho.F).
68        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
69      - implementation for ocean in P-coords not tested.
70      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
71    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
72      (to facilitate conversion of oceanic pkg to p-coordinate).
73    o change FIND_RHO to FIND_RHO_2D :
74      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
75    o new pkg: cheapaml
76    
77    checkpoint61b
78    o exch2:
79      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
80      - no longer depend on the order sequence (N,S,E,W).
81      - 3rd exchange no longer needed (tested with 24 tiles).
82      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
83      - exch_UV_A-grid readily available (but not yet tested).
84      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
85      (both are no longer needed) in exch_uv: no effect in forward run; but
86       get truncation error differences with adjoint exch.
87    o exch2:
88     - change index-bounds storage (moved from target to local tile,
89       more intuitive this way) ; rename/remove some variables.
90     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
91    
92    checkpoint61a
93    o exch2/matlab-topology-generator:
94      fix bug in index bounds for N-S internal exchange (hard to tell if this
95      had any effect on the solution).
96    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
97      is exceeded
98    o testreport: modify syntax of awk, so that it works also with
99      awk, and not only with nawk and gawk
100    
101    checkpoint61
102    o autodiff
103      Change default for TAF usage by removing argument '-nonew_arg'
104      This changes TAF subroutine argument list (ordering of active var.)
105      Omission of this flag leads to incompatibility w.r.t. TAMC
106      To restore TAMC-compatibility, need following modifs:
107      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
108      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
109      Tested TAF version is 1.9.22
110      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
111    
112    checkpoint60
113    --->>> This is the last checkpoint for which generating the adjoint
114    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
115    --->>> by default.
116    --->>> Future checkpoints will ommit this flag by default.
117    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
118    o pkg/grdchk: Add gradient check to etan0 perturbations.
119    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
120    o pkg/autodiff: more flexibility in zeroadj.
121      model/src: modifying do_oceanic_phys.F accordingly.
122    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
123    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
124      special setup of gmredi for which the adjoint is stable
125      enough for parameter optimization.
126    o bridging the gap between eddy stress and GM.
127      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
128          along with a change in CPP option (now ALLOW_EDDYPSI).
129      -> when using GM w/ GM_AdvForm:
130          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
131          is applied either in the tracer Eq. or in momentum Eq.
132          depending on data.gmredi (intro. GM_InMomAsStress).
133      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
134      The key modifications are in model/src/taueddy_external_forcing.F
135      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
136    
137    checkpoint59r
138    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
139      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
140      fix option to read coriolis(@ cell-corner) from files with CS-grid.
141    o pkg/mnc: add some attributes to standard 1D-coordinate variables
142    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
143      mass points, when using mnc for output
144      - add runtime parameter (missing_value, missing_value_int) to override
145        default (which is the value of getcon('UNDEF'))
146    o pkg/mnc: prepare mnc for the actual use of missing values with the
147      diagnostics package: small fix in mnc_cw_readwrite.template and more
148      initialisation of never used fields
149      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
150      versions
151    o pkg/thsice/thsice_ini_vars.F added default initial values so that
152      thermodynamics sea ice solver does not blow up when some initial fields
153      are missing.
154    o move from external_forcing_surf.F to ini_forcing.F
155      the p-coord. hack consisting in using pLoad to set phi0surf ;
156      update output of tutorial_global_oce_in_p (affected @ truncation level).
157    o Freshen up a bit hs94.1x64x5, notably:
158      remove rotationPeriod and tRef=5*0. (adjoint only), and add
159      exactConserv=.TRUE.
160    o pkg/generic_advdiff:
161      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
162      applies to files where Temperature & Salinity 2nd Order moments are used.
163    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
164      this uses a dynamically allocated internal state data structure
165      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
166      and requires a fortran 90 compiler
167    
168    checkpoint59q
169    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
170       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
171    o Refresh tutorial_global_oce_biogeo, notably:
172      - change bathymetry (put back seamounts in ACC, use hFacs)
173      - change EOS (POLY3 --> JMD95Z)
174      - use Bryan-Lewis vertical diffusivity
175      - use multidimensional advection
176      - remove old virtual virtual in dic pkg, now done through ptracer pkg
177      - change a couple of parameters in dic pkg
178    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
179    o pkg/obcs: change default to OBCSfixTopo = .true.,
180      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
181      - replace "debugMode" with "debugLevel .GE. debLevB"
182    o implementation of TAF directives for gchem,cfc,dic
183    o remove "exp5" (replaced by tutorial_deep_convection).
184    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
185      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
186      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
187      --> changes results in exp4, seaice_obcs
188    o tutorial_deep_convection :
189      update the set-up and increase resolution and domain size ; start
190      from pseudo initial conditions = output at t=120mn in order to see
191      something happening when running testreport.
192    o pkg/seaice: add os7mp as an advection scheme
193                  add check for advection schemes
194                  add a flag for restoring T and S underneath sea ice
195    o pkg/my82: add netcdf-support and diagnostics
196    o thsice pkg:
197      - Now hsMax limits snow height by turning it into ice following
198        flooding scheme (and now conserving energy)
199      - Slight rewriting of the formula in thsice_calc_thick.F
200      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
201      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
202    
203    checkpoint59p
204    o gchem / dic / cfc :
205      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
206      - add new parameter files: "data.dic" & "data.cfc" ;
207      - various re-arrangement in initialisation & header file ;
208      - fix tutorial_global_oce_biogeo for multi-threaded test.
209    o pkg/dic: test for "pickup_dic" file when restarting ;
210      if no pickup-file, can restart with a re-initialised pH (same as it did
211      before) providing pickupStrictlyMatch is set to False.
212    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
213      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
214    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
215      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
216    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
217     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
218       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
219    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
220       scheme to use for vorticty-term ;
221     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
222       (with default selectVortScheme, return to original discretisation)
223     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
224    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
225    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
226      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
227      also fix diagnostics VISCAHW & VISCA4W.
228    
229    checkpoint59o
230    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
231    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
232      move a few statemens out the main loop into separate loops
233    o pkg/shelfice:
234      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
235        (kg/m^2/s), does not break tests, because in verification/isomip,
236        rhoConstFresh=rhoConst (by accident)
237      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
238      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
239        new file model/src/seawater.F, so that they are available for all pkgs.
240      - convert potential temperature into in-situ temperature. This changes the
241        isomip tests => update tests
242    o add a flag writePickupAtEnd (default=true) to be able to suppress
243      writing a pickup at the last timestep
244    o tools/mpack-1.6 :
245      - disable automake (not working) and autoconf (not needed).
246      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
247        also cleaner with much less compilation warnings.
248    o pkg/profiles:
249      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
250      (for "less than 32 characters name" compiler requirement)
251    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
252      conditions that have a different sampling frequency than S/T/U/V obcs
253    o pkg/diagnostics (stats-diags):
254      - fix global Min/Max in case 1 processor get only empty tiles
255    o genmake2: replace (4 times)
256         make genmake_tc_1.o >> genmake_warnings 2>&1
257      with
258         COMM="$CC $CFLAGS -c genmake_tc_1.c"
259         echo $COMM >> genmake_warnings
260         $COMM >> genmake_warnings 2>&1
261      to make genmake2 always see the value of CC as specified in the optfile.
262    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
263      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
264      - modify verification advect_cs test to test SOM-advection on CS-grid.
265    o pkg/ctrl:
266      - Rewrite of ctrl_map_ini_ecco.F,
267        introducing a generic routine (ctrl_map_ini_gen.F).
268      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
269    
270    checkpoint59n
271    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
272      number in dedicate array "hdiag":
273      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
274        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
275      - many small changes (integer format) for large number of diagnostics
276      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
277        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
278    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
279      usingSphericalGrid, this allows to define the rotated grid coordinates
280      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
281      geographical coordinates according to the inverse of the rotation defined
282      by the Euler angles, so that Coriolis parameter and online-interpolation by
283      exf works with the geographical coordinates on XC/YC/XG/YG.
284      Naturally, this feature does not work with all packages, so some
285      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
286      profiles), because there the coordinates are assumed to be regular
287      spherical grid coordinates.
288    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
289      - introduce isopycnal diffusion coefficient control.
290    o tools/adjoint_options:
291      - additional control vector components.
292    o pkg/mnc: have mnc create marginally meaning full coordinate variables
293      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
294    o pkg/mypackage:
295      - add example of read/write pickup for state-var ;
296      - add entry points to the main code for state-vars diags & write-pickup.
297    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
298      transitions for useExfYearlyFields
299      - add new subroutine that determines the file to read from for
300        use*YearlyFields = .TRUE. and .FALSE.
301      - add a verification experiment to global_with_exf that tests
302        useExfYearlyFields with USE_EXF_INTERPOLATION defined
303    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
304      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
305      subroutines (which could be generated from a template, because they are
306      almost identical), for now they are included in obcs_prescribe_read.F for
307      simplicity
308    o pkg/exf:
309      - add a little more diagnostic to exf_interp_read (in analogy to
310        mds_read_field, can be turned off with debugLevel < debugLevA=1)
311      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
312        ugly but fast by unrolling short inner loops, inserting a unroll=8
313        directive in routine lagran, and splitting a loop and making do while the
314        outermost loop (the latter requires the intoduction of index arrays)
315    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
316    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
317      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
318    o verification/seaice_obcs: updated for restart test and latest options
319    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
320      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
321      for now this is only available for the C-grid code and also within
322      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
323    
324    checkpoint59m
325    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
326      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
327    o gad_som : fix flux output (& diagnostics) to have same units as other  
328      advection scheme fluxes (was previously multiplied by deltaT).  
329    o added verification/seaice_obcs both to test seaice open boundaries
330      and to provide an example matlab scrpt for generating them
331    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
332    o pkg/salt_plume: clean up salt_plume_frac.F to
333      remove redundancy in PlumeMethod 1 and 4
334    o pkg/kpp: added saltplume diagnostics
335    o pkg/obcs and pkg/seaice:
336      - do not set uice and vice to zero when OB*icefile are unspecified
337      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
338      - moved seaice tracer obcs after call to seaice_growth
339    o pkg/salt_plume: added various options for salt plume depth
340      criterion and for vertical distribution of the salt
341    
342    checkpoint59l
343    o pkg/ptracers: new version of ptracers pickup:
344      read meta file and write only fields which are needed to restart.
345      ( same logic as main pickup file ; also using pickupStrictlyMatch )
346    o pkg/seaice:
347      - add timescale for melting due to warm mixed layer as a means of
348        setting SEAICE_availHeatFrac more conveniently
349      - add a CPP-flag/runtime parameter check for flooding algorithm
350      - reformulated availHeat in seaice_growth.F to be independent of AREA
351    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
352      unit changes
353    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
354    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
355      SX vector computer.
356    o pkg/seaice:
357      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
358        seaice forcing fields can now be read only through pkg/exf
359      - removed some unused halos
360    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
361    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
362      or U/VICE from U/VWIND before computing U/VSTRESS
363    
364    checkpoint59k
365    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
366      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
367    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
368      all experiments pass when compile with un-initialised var. checking option.
369    o added pkg/salt_plume
370    o script to test restart (for now, in MITgcm_contrib/jmc_script)
371    o pkg/seaice: new read/write pickup version.
372      read meta file and write only fields which are needed to restart.
373      ( same logic as main pickup file ; also using pickupStrictlyMatch )
374    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
375    o lab_sea.hb87: modify the domain & update output.hb87.txt :
376      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
377      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
378      process. Fixed here by closing the domain at the Northern boundary.
379    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
380    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
381      a set of consecutive levels in/from a 3-D array.
382    o pkg/ptracers:
383      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
384      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
385    
386    checkpoint59j
387    o in pkgs: dic, obcs, offline, rbcs:
388      standard way to compute coeff. for time interpolation between 2 time reccords
389      which retains full precision (& make results less dependent on compiler).
390      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
391    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
392      packages instead of reading ice cover and wind speed separately
393    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
394     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
395      to allow to compile customized code before the update)
396    o cleaning-up:
397      - fix CPP instruction syntax in pkg/obcs
398      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
399        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
400      - fix some threads issue in IO parts.
401    o pkg/dic:
402      - add tons of "_d 0" (--> much better testreports !)
403       and then update outputs of tutorial_global_oce_biogeo
404    o pkg/mom_fluxform:
405      add a special version of momentum advection intended to conserve momentum
406      next to a bathymetry step or a coastline edge. (default = off = #undef)
407    o new read/write pickup version:
408      - for now, only implemented for main (mdsio) pickup file.
409      - write out only what is needed to restart; merge pickup_nh , pickup_ph
410        and main pickup together.
411      - read meta file; read only what is needed to restart; stop if a field
412        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
413        if it make sense (even if the restart is not perfect).
414      - if no meta file, assume that pickup to read corresponds exactly to
415        a pickup that would currently be written.
416      - read pickup written in the old format (until checkpoint59i) if it
417        recognizes an old meta file (no field-list).
418      - add a meta file in exp. which starts from a pickup: 2 cases:
419        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
420         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
421        b) a meta file describing the content of the associated pickup file
422         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
423    o pkg/mdsio & pkg/rw:
424      - new routine to read a meta file ; new set of routine to read
425        Multiple-fields file (with meta file).
426    o added open boundary conditions capability for seaice
427        HSNOW, HSALT, UICE, and VICE
428    
429    checkpoint59i
430    o adjoint:
431      * fix multiDimAdvection adjoint
432        (partial recomputation problem by TAF for fVerT(:,:,kDown)
433        and comlev1 size definition (maxpass vs. max. number of tracers)
434      * verification/global_ocean.90x45x15 adjoint now tests
435        NLFS and multiDimAdvection using DST3 (=30)
436      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
437    o pkg/kpp: add "_d 0" to real constant (if missing);
438      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
439      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
440    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
441      for internal parameters related to restart process (formerly from PARAMS.h)
442      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
443    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
444      as argument. (only atm2d & obcs write_pickup have not yet been updated)
445    o pkg/monitor:
446      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
447      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
448      - account for deep Atmosphere factor and density factor (anelastic)
449    o added open boundary conditions capability for seaice HEFF and AREA
450    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
451      thermodynamics
452      - requires a little reorganization, which affects the testreport results
453        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
454        so that now the conservative form is tested
455      - add a few comments
456    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
457    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
458    o add new diagnostics to seaice: advective, diffusive fluxes (only for
459      multidim-advection, for scheme 2 they are not filled) and transports,
460      thermodynamic growth rates
461    o change units of EmPmR (inside the code, + within coupling interface)
462      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
463      Affects results @ truncation level (cg2d match) and update output of
464       experiments: lab_sea(6), global_ocean.90x40x15(10),
465      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
466      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
467      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
468      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
469    
470    checkpoint59h
471    o pkg/exf:
472      - improve vectorization by moving if-statement out of loops in
473        exf_mapfields, exf_radiation
474      - exf_bulkformulae.F: introduce 2D fields and vectorize code
475    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
476    o testreport:
477      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
478        monitor & update offline_exf_seaice exp. output.
479      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
480    o pkg/seaice:
481      - bug fix in the evp solver: boundary conditions were affected be
482        masking of zMax/zMin (changes results)
483      - minor bug fix in boundary conditions in seaice_calc_strainrates
484        (changes results for no_slip)
485      - seaice_lsr.F: make interpolation of eta dependent on boundaries
486      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
487      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
488        stress formulation and no-slip boundary conditions
489    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
490      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
491    o pkg/seaice: a first HSALT time stepping equation has been checked in
492    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
493      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
494      without requiring DO-IF statements
495    o pkg/thsice:
496      use continuous power-law function for partition of energy between lateral
497      melting/freezing and thinning/thickening ; old code using step function
498      still available with #undef THSICE_FRACEN_POWERLAW
499      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
500    o testreport: change AD testing : check against results/output_adm.txt
501      using same scripts as for forward test.
502    
503    checkpoint59g
504    o adjoint testing: in preparation for changing testreport:
505      - output format: cost and grad written on separated lines
506      - ad output results in directory "results" (instead of "results_ad")
507    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
508    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
509    o pkg/ecco: allow user defined cost function contributions
510    o testreport:
511      Allow to choose (per experiment) the list of tested output variables
512       and the main variable (used to issue a pass/FAIL ) ;
513      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
514      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
515      Also modify printing of summary:
516       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
517       b) echo the list of tested variables in the individual summary.txt of
518          each experiment.
519    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
520      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
521      (but still depend on the tile decompostion of the domain).
522    o pkg/seaice: change a discretization detail to make the B-grid code
523      "more symmetric". This change is likely to remove all "ridges/leads" that
524      where quasi-aligned with the grid in B-grid solutions. It may also be
525      the solution to the stress coupling issues with the B-grid.
526    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
527      remove .cvsignore from input dir. (since testreport no longer run here).
528    o pkg/thsice:
529     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
530     - fix reshaping of sea-ice just after advection:
531       melt all the ice only if ice-volume is too small.
532     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
533       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
534     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
535    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
536      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
537    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
538      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
539      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
540      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
541      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
542      -> update output.txt
543    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
544     this affects truncation error: -> update output.txt of exp:
545      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
546      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
547    
548    checkpoint59f
549    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
550    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
551      a bounded range (in forward mode)
552    o pkg/ecco, ctrl, autodiff and mom_common:
553     internal parameter controls, completements of implementations
554    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
555    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
556      (not seem any difference in testing results).
557    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
558       at face corners.
559    o pkg/generic_advdiff:
560     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
561      loop range indices for computing vertical advection tendency
562      and do the calculation in the interior only (no overlap) ;
563      for now, only implemented for SOM advection (to save CPU time).
564     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
565    o exch2 adjoint
566      First set of changes:
567      - add exch2 hand-written adjoint templates
568      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
569        This will require cleanup in pkg/autodiff/*.F
570        (changed routines currently kept separate in verif. code/)
571      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
572        that used to hide exch2 or cubed-sphere specific code
573        (commented via 'cph-exch2')
574    o pkg/seaice
575      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
576    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
577       output of global_ocean.cs32x15.thsice .
578    
579    checkpoint59e
580    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
581      for B-grid vector (not yet tested) and C-grid vector (<- only used
582      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
583    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
584      (#ifdef ALLOW_SALT_PLUME)
585    o gather_2d/scatter_2d: removed halo regions
586    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
587      scheme and the corresponding test case (under front_relax dir). For now,
588      only available with Skew-flux form and not yet tested in realistic set-up.
589      adjoint: store directives updated, but gradient checks deteriorated,
590      so maybe GM/Redi adjoint is now broken.
591    o seaice adjoint
592      * add AREA, HEFF, HSNOW as control variable
593        (should not change lab_sea results)
594      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
595    o pkg/seaice:
596      * added computation of saltFlux in seaice_growth;
597        For time being, sea ice salinity is assumed constant
598        contribution of snow flooding to freshening of sea ice is neglected.
599        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
600        defaults to 0.0 in order to maintain backward compatibility.
601        Typical values for SEAICE_salinity are 4 to 10 g/kg.
602      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
603      * added SEAICE_availHeatFrac, which specifies fraction of surface level
604        heat content used to melt or grow ice
605      * commented out cap of HICE: it helps keep ice thinner
606      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
607      * applied OBCS T/S mask to HEFFM sea ice mask
608    
609    checkpoint59d
610    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
611     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
612     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
613    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
614     and change default value of parameter "GM_Small_Number";
615     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
616       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
617       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
618    o pkg/ecco: cost function when applying pkg/smooth to controls
619    o pkg/ctrl: add forcingPrecond run time parameter
620    o pkg/seaice:
621     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
622     - fix bug in metric terms of u-equation in LSR solver (implicit part),
623       changes verification/lab_sea
624     - rearrange implicit part of u-equation in LSR solver to make it easier to
625       read, understand, and debug. This causes changes at the truncation level.
626     - fix (serious) bug in the boundary conditions (sign error in the implicit
627       part) of the LSR solver. Changes all LSR results.
628     - fixed problem with HSNOW initialization to avoid thick snow when AREA
629       is initilized with small values - does not change lab_sea results.
630     - added HsnowFile initialization capability
631    o pkg/smooth: addition to model/src and pkg/ctrl so allow
632     initialization of pkg/smooth and application to control vector
633    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
634    o dependencies: pkg/profiles requires pkg/cal
635    o pkg/profiles:
636     - added option ALLOW_PROFILES_GENERICGRID
637         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
638         that interpolation information (grid points and coefficients) is provided
639         within the netcdf input files.
640         -> sample matlab scripts can be found in MITgcm_contrib/gael
641         that allow you to prepare netcdf input files.
642     - also modified: cleaner include statements, cleaner error print statements,
643       cleaner stops when error, and more tests of the netcdf input files consistency.
644    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
645    o pkg/seaice:
646     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
647       requires a new routine: seaice_diagnostics_fill.F
648     - make sure that seaice does not move if not forced (pressure replacement
649       method, Hibler and Ip, 1995), changes results
650     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
651     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
652       It is turned off by default (=-1.), because it changes the results.
653     - make it possible to read AREA from a file, too.
654    
655    checkpoint59c
656    o add S/R and diagnostics for oceanic mixed-layer depth
657    o move GMRedi call after all vertical mixing schemes (including KPP)
658    o pkg/thsice:
659     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
660      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
661    o pkg/obcs:
662     - bug fix for balance code
663    o pkg/seaice:
664      - allow values of SEAICE_elasticParm > 1
665      - add new parameter SEAICE_evpTauRelax as an alternative
666        to SEAICE_elasticParm
667      - make lsr boundary conditions free slip (by default), changes result
668      - add code for no slip boundary conditions for lsr
669      - set minimum of zeta to zero (and not 4e8) (changes results)
670      - add a cap on AREA after advecting AREA if seaice_growth is not called
671    o change calculation of Visbeck K:
672      - no longer depend on tapering scheme; instead, compute slope (limited
673        by GM_maxSlope). this is equivalent to what was comuted before with
674        clipping or linear tappering.
675      - fix vertical averaging (wrong by 1/2 level)
676      - leave the old version (but will not be maintained) within
677        #ifdef OLD_VISBECK_CALC / #endif
678      - update output of exp. ideal_2D_oce
679    o change error catch in calc_r_star to improve vectorization
680    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
681      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
682    o adjoint:
683      Re-organized adjoint checkpointing according to Matt Mazloff
684      (but with modifs/completions/cleanups)
685      Storing is now bundled into large arrays to optimized I/O
686      (and second step in cleanup of the_main_loop)
687    
688    checkpoint59b
689    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
690      - export/import (between ocean & coupler) fields needed for ocean DIC.
691    o pkg/seaice:
692      - get rid of three more exchanges seaice_calc_viscosities (required
693        different loop boundaries in seaice_lsr and seaice_ocean_stress)
694      - bug fix in seaice_ocean_stress (update of lab_sea required)
695      - reduce loop boundaries to necessary minimum also in seaice_evp
696      - go back to the old way of computing deltaC/Z as the adjoint likes that
697        better
698    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
699      passive tracer to an Age Tracer) + update output.txt
700    o pkg/exf:
701      - implement A-grid / C-grid selection for wind-stress input files.
702      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
703      for now, in exf_bulk_largeyeager04.F only :
704      - change implementation for case where windspeed + 2. components wind-stress
705        are read-in. AND use rhoConstFresh to convert evap.
706    o pkg/seaice:
707      - use correct EXCH_UV for wind-forcing (on A-grid).
708      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
709        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
710    o pkg/exf:
711      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
712      EXF_INTERPOLATION:
713      - merge global_with_exf/code version of exf_interp_read.F
714        to the main code ;
715      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
716        reading the file ; Important: This options needs to be defined to recover
717        previous code.
718        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
719      - no longer loose real*8 precision along the way when using exf_iprec=64.
720    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
721      - change discretisation of evp-solver in order to avoid another exchange
722        (changes lab_sea) and clean up a little
723      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
724        help the adjoint (this also changes the results slightly)
725      - add a few "_d 0" where they had been missing in seaice_evp.F
726      - cleaning up: remove unused seaice_calc_rhs.F
727    o pkg/exf: some cleaning-up:
728      - change various "constants" into runtime parameters
729      - cleaned-up Large&Yeager04 routine which should eventually
730        replace exf_bulkformulae.F (changed names of S/R and CPP)
731        and merged various ALLOW_ATM_WIND options
732     only used with thsice pkg (in thsice_get_exf.F):
733      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
734        which are used when useStabilityFct_overIce=TRUE (= the default)
735      - change default values of ice & snow emissivity and scale downward LW
736        by ice & snow emissivity.
737    o pkg/thsice:
738     fix few little problems, in thsice_calc_thickn.F:
739      - growth vertically (and not laterally) if iceFrac == iceMaskMax
740      - melt only laterally if hIce < hThinIce (as the comments say)
741      and in thsice_extend.F:
742      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
743      - start to form ice as soon as the minimum ice-volume is reachable.
744     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
745      and cpl_aim+ocn
746    o pkg/kpp
747     - move computation of surface related input fields to KPP into a new
748       subroutine kpp_forcing_surf.F
749     - remove wrong (within bi,bj loops) EXCH calls.
750     - little cleaning (add argument myThid in last position, cvs header ...)
751     - for now, fix conservation problem by exchanging KPPviscAz (may not
752       be the best fix)
753    o pkg/seaice
754     - check for inconsistent evp parameter/cpp-flag combination
755     - remove leftover errIO flat for obsolete name list error handling
756    o OpenAD
757     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
758    
759    checkpoint59a
760    o pkg/seaice: some parameter clarifications and a little bit of clean up
761    o pkg/thsice: rename run-time parameters:
762       himin       -> hIceMin
763       himin0      -> hThinIce
764       hihig       -> hThickIce
765       i0          -> i0swFrac
766       transCoef   -> bMeltCoef
767       frac_energy -> fracMelting
768      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
769       with default values (for now) that do not change the results.
770      remove old version of thsice vars advection in pkg/seaice.
771    o in FFIELDS.h:
772      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
773      - make pLoad & sIceLoad always available (but still only used if
774         ATMOSPHERIC_LOADING is #define).
775    o pkg/kpp: replaced _KPP_RL with _RL
776    o bug fixes for vertical diffusivity computations when both KPP and
777        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
778        are no longer updating the vertical diffusivity array
779        (passed as argument) but are (re-) setting those arrays.
780    o pkg/seaice: fix bug in evp solver, while doing that
781      - change (improve?) discretization of stress computations for both
782        cgrid-lsr and evp solver
783      - add a new routine to compute strain rates
784      - the above changes lab_sea results
785      - add no slip conditions for evp solver (off by default), lsr-version
786        may follow
787      - fix exchange for shear at Z-points (does not change lab_sea)
788      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
789        (to force the user to pick a time step since there is not "safe" way
790        of choosing it)
791      - add principal stress diagnostics
792      - rearrange fields for evp a little to avoid having to call a: too many
793        exchanges and b: exchanges for stress trensor components which we do
794        not have.
795      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
796        of evp, complete rewrite for lsr case (latter is does not yet work
797        in all cases)
798    o pkg/kpp: add code to have mixing in shelf ice caverns
799      - add myThid to all kpp routines (long overdue)
800    
801    checkpoint59
802    o pkg/exf:
803      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
804        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
805      - move exf header files from lower_case.h to UPPER_CASE.h ;
806        add missing cvs Header & Name
807      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
808      - add namelist param. selectStressGridPosition, exf_monFreq
809      - retire many _CLIM routines, and remove data.exf_clim
810        + params moved to data.exf
811        + climsst, climsss now handled by exf_set_gen, i.e.
812          climss?period=0 refers to constant field,
813          climss?period=-12 to monthly forcing
814      - split up namelists in data.exf
815    o pkg/seaice:
816      - remove seaice_exch and seaice_exch_uv
817      - remove superfluous exchange of theta
818      - add myThid to seaice_budget_ocean/ice
819      - add new interface for atmospheric wind forcing (C-grid only)
820        + new routine
821        + two new field (taux, tauy for stress over ice)
822        + removed one global field (DAIRN) for C-grid case only
823    o pkg/thsise
824      - 2nd set of modifs for thsice adjoint in conjunction with exf
825    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
826    
827    checkpoint58y_post
828    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
829      vertical diffusivity, similar to that in MOM4; turned on using
830      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
831      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
832    o Added capability for 3D specification of background vertical diffusion
833      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
834      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
835      "data" file that contains the 3D vertical diffusivity coefficients.
836    o ice dynamics (pkg/seaice) with thsice thermodynamics:
837      - add code within pkg thsice to advect & diffuse sea-ice fields
838      similar to (and will replace) what has been added in  seaice_advdiff.F,
839      but: - conserving Mass, Heat & Salt.
840           - better when using non-linear advection scheme (not yet fully tested)
841           - can also be used in atmospheric set-up (for now, only the diffusion).
842    
843    checkpoint58x_post
844    o IO option for global-file compact format:
845      - add options when generating topology (utils/exch2/matlab-topology-generator)
846      - add I/O capability (pkg/mdsio).
847      - adapt utils/matlab/rdmds.m to read this format.
848      for now long-line format not yet supported by pkg/mdsio (& exch2).
849    o shelfice: add a few diagnostics
850    
851    checkpoint58w_post
852    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
853      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
854      (and replace horiVertRatio in NH code).
855      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
856                         and tutorial_plume_on_slope (sensitive to truncation)
857    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
858      directly to drive seaice model (C-grid only)
859    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
860     - reintroduce computation of wind from stress,
861     - compute tau (in exf_bulkformulae.F) from windstress averaged to
862       mass points to avoid tau = 0
863     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
864    o rdmnc.m: make it work with "global" files created with gluemnc
865    o rdmnc.m : some improvements in dealing with singleton dimension
866      (tested on all testreport mnc output files).
867    o genmake2: disable pkg/profiles if netcdf test fails.
868    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
869    o move call to cal_readparms up to make calendar parameters/variable available
870      to all packages
871    
872    checkpoint58v_post
873    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
874      useDynP_inEos_Zc tested.
875    o pkg/exf: changes to properly interpolate/mask/scale initial fields
876    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
877      and portions thereof.  See read_cs.txt for description and examples.
878    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
879      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
880      following the great-circle arc between those 2 points.
881    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
882      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
883    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
884     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
885     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
886     - still needs work (not working with some options ; efficiency to improve)
887       and serious testing.
888     - use this scheme for temperature & salinity in 2 advection test exp.:
889       advect_xy & advect_xz, respectively.
890    
891    checkpoint58u_post
892    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
893    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
894    o testreport: add option "-skipdir" to skip some test.
895    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
896      momentum calculation.
897    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
898    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
899      remove checkpoint.F and the_correction_step.F (no longer used);
900      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
901    o add option (linFSConserveTr) to correct for tracer source/sink due to
902      Linear Free surface
903    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
904    o pkg/thsice: fix reading mnc-pickups
905    
906    checkpoint58t_post
907    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
908    o pkg/mdsio:
909     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
910       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
911       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
912     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
913     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
914       either MDS_READ_FIELD or MDS_WRITE_FIELD )
915     - new S/R (to replace MDSWRITEMETA), which allows to write more
916       informations (variable names, time ...) to meta files.
917     - modify rdmds.m to give back the meta file content.
918    o pkg/diagnostics: change vertical interpolation to be safer, and more
919       flexible (define p-levels to interpolate to in data.diagnostics);
920      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
921       diagnostic pointer.
922    o pkg/seaice: more cleaning up of seaice_growth, added many comments
923    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
924    o fix multi-category seaice:
925     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
926       SEAICE_MULTICATEGORY
927     - fix short wave heat flux
928    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
929       and allow to use EVP solver. Change forward lab_sea: test both EVP
930       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
931    o Initial check-in of lab_sea adjoint
932      (very similar to natl_box_adjoint/code_seaice)
933      * used C-grid and EVP solver
934      * used KPP, GM/Redi
935      * uses inAdExact=.TRUE.
936      * gradient checks fail for both ADM and TLM
937        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
938        f.d. gradients actually seem more problematic than ADM, TLM gradients;
939        issue is related to forward mismatch between g77 an ifort
940    o pkg/seaice: overhaul of thermodynamics
941     - growth.F and groatb.F are replaced by new routine seaice_growth.F
942     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
943     - move a few global fields out of SEAICE.h into seaice_growth.F and
944       make them 2D (FICE/QNETO/ ...)
945     - remove FO (it is the same as QNETO)
946     - introduce a few local fields to avoid modifying external fields such
947       as atemp, etc.
948    
949    checkpoint58s_post
950    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
951      changed exf_set_gen.F so that
952        genperiod=0 means input file is one time-constant field and
953        genperiod=-12 means input file contains 12 monthly means
954    o CG2D: use pre-computed solver main-diagonal (stored in common block);
955      this affects truncation error ; generate new output file for exp. which
956      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
957        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
958        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
959        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
960        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
961        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
962    o start implementation of deep-atmosphere and anelastic formulation
963    o verification: remove 2nd copy of input files and use script "prepare_run"
964      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
965    o mom_common/vecinv/fluxform: fix a few initialisation isssues
966    o profiles: fix for multithreaded case
967    
968    o diagnostics: rename few diags:
969      s/'PRESSURE'/'RCENTER '/g
970      s/'TICE    '/'oceFreez'/g
971      s/'TAUX    '/'oceTAUX '/g
972      s/'TAUY    '/'oceTAUY '/g
973      s/'SWFLUX  '/'oceQsw  '/g
974      s/DIFx/DFxE/g
975      s/DIFy/DFyE/g
976      and add few ocean-forcing diagnostics:
977      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
978    o modifications to pkg/seaice/growth.F and budget.F, which change results of
979      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
980      as actual snow thickness.  It now refers everywhere to effective snow
981      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
982    
983    checkpoint58r_post
984    o modifications to pkg/seaice/growth.F, which change results of
985      lab_sea experiment: fixes pertain to melting snow over open water, to
986      masking EVAP under sea ice, and to using the correct AREA variable for
987      computations of EVAP, PRECIP, HSNOW, and GHEFF
988    o add ability to read bathy, salt, and theta using MNC (off by def)
989    o add flooding algorithm and advection of HSNOW for pkg/seaice;
990      both are turned off by default and do no change any results
991    o seaice advection with pkg/thsice: a step toward the use of non-linear
992      advection scheme, but #ifdef or commented out for now (requires more EXCH).
993    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
994      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
995      in natl_box (affects results @ truncation level: update output.txt)
996    o multi-threading and IO:
997      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
998      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
999        (needed to work with SingleCpuIO): tested in all verif. exp.
1000    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1001      affects the results (but none of the verification test uses this scheme).
1002    o Adding some pkg/diagnostics capability to pkg/seaice
1003      (will certainly be subject to changes)
1004    o ctrl: adding new control variables:
1005      lwflux, lwdown, evap, snowprecip, apressure, runoff
1006    
1007    checkpoint58q_post
1008    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1009      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1010      high_res_cube configuration by 4% on Columbia.
1011    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1012      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1013      dynamical allocation (seems to work in multi-threaded).
1014    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1015      single CPU io) so that TAF does not have to see EESUPPORT.h
1016    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1017    
1018    checkpoint58p_post
1019    o obcs: stop if obcs is used with useCDscheme = .true.
1020    o shelfice:
1021     - fix a sign error so that no slip at shelfice interface works
1022     - remove stop for combination non-hydrostatic code and shelfice. That does
1023       not mean, that the results are correct, but at least they are numerically
1024       stable
1025    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1026    o added adjoint exch routined for all exch*3d* routines
1027      and updated flow directives
1028    
1029    checkpoint58o_post
1030    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1031      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1032    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1033      and clean-up reading/writing of pickup files.
1034    o fix local version of read/write pickup (NH part) in rotating_tank/code
1035    o simplify EXCH interface:
1036     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1037     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1038    o added the regrid package
1039    o shelfice:
1040     - add a simple boundary layer scheme to reduce noise
1041     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1042    
1043    checkpoint58n_post
1044    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1045       local variable (not in common block).
1046    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1047      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1048      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1049        to work with SingleCpuIO.
1050    o add "_d 0" to real constant of pkg/cfc subroutines ;
1051       update exp. cfc_exemple & tutorial_cfc_offline output files.
1052    o multi-threading and IO:
1053      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1054        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1055      - barrier before and after reading.
1056      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1057      - avoid using MDS_WRITELOCAL for LAND pkg output.
1058      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1059        common-block variables ; Allows multi-threading with master-thread IO.
1060    o change default MAX_NO_THREADS from 32 to 4 ;
1061      and stop cleanly when MAX_NO_THREADS is too small.
1062    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1063    
1064    checkpoint58m_post
1065    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1066       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1067    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1068       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1069       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1070    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1071        add MITgcm_tutorials (= code + all the tutorials)
1072    o ecco, option to compute cost for total ssh (mean+anom)
1073    o consistent with addition of ptracer and ssh in pkg/profiles
1074    o profiles: adding ptracer and ssh
1075    o testreport: change multi-test output-file name
1076      (from output.txt.{name} to output.{name}.txt)
1077    o profiles: now ok for mutli-tiles case
1078    o seaice: add 4 parameters for different advection schemes for area,
1079      (effective) seaice thickness, enthalphy, and snow height. Their default
1080      is the standard parameter SEAICEadvScheme
1081    o calc_gw:
1082     - add cosFacU in zonal viscous flux (harmonic.visc.).
1083     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1084       of tutorial_plume_on_slope.
1085    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1086    o calc_gw: true flux-form, account for horizontal grid spacing.
1087      update rotating_tank results, but not plume_on_slope (affected at
1088      truncation level, 11 digits).
1089    
1090    checkpoint58l_post
1091    o calc_gw:
1092     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1093     - remove side-drag for now (need to fix it); update plume_on_slope results.
1094     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1095    o commit code to make SST/SSS weights spatially variable
1096      (based on either variable in-situ or variable initial T/S weights)
1097    o pkg/ecco:
1098      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1099        now based on horizontally varying weights wthetaLev, wsaltLev
1100      * cost_averagesflags now returns year indices in addition to day, month
1101      * sflux balance is performed on annual basis
1102        (sflxumm, sfluxmm2, bal_sfluxmm)
1103      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1104        including separate counting and multipliers
1105    o pkg/rbcs
1106      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1107    
1108    checkpoint58k_post
1109    o testreport:
1110     - always build in dir. "build" (if not there, mkdir build instead of building
1111       & running in input)
1112     - run in dir run (if it exists), in build otherwise.
1113     - call prepare_run (if input/prepare_run exists)
1114     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1115    o pkg/exf modifications to interpolation and rotation routines for more
1116       reasonable treatment of North Pole singularity: for tracers North Pole
1117       value is set to northernmost zonal-mean value, for zonal velocity it is
1118       set to zero, and for meridional velocity it is set to northernmost value.
1119    o pkg/exf/exf_check_range.F
1120     - add tile index to diagnostics and move stop statement to the very
1121       end of the routine.
1122    o pkg/diagnostics: (diagnostics_main_init.F)
1123      define title of isomorphic variables according to the current config.
1124    o pkg/thsice with pkg/seaice dynamics:
1125    - fix domain of computation (interior only, required for exf) and do exchanges
1126    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1127    o towards a standard way of dealing with multi-threading in MONITOR
1128      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1129    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1130       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1131    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1132    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1133    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1134       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1135    o tracer advection:
1136     - clean-up and simplify calc_common_factors.F
1137     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1138       advection subroutine (but still not used within DST advection S/R)
1139    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1140    
1141    checkpoint58j_post
1142    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1143      from file (collects calls previously in FORWARD_STEP)
1144    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1145    o adjoint store dir. adjusted accordingly
1146    o genmake2
1147      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1148    
1149    checkpoint58i_post
1150    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1151      on wind stress (SEAICEstressFactor defaults to 1.)
1152    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1153      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1154    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1155      on CS-grid: no longer loosing mass.
1156    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1157    o pkg/ggl90: fix sloppy output and fix a bug
1158    o pkg/seaice: added SEAICEuseEVPpickup parameter
1159      - Set to false in order to start EVP solver with
1160        non-EVP pickup files when using SEAICEuseEVP
1161      - fix sign error in diffusion in seaice_calc_rhs
1162    
1163    checkpoint58h_post
1164    * Modifications for bottom topography control
1165      o replace hFacC by _hFacC at various places
1166      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1167      o add non-self-adjoint cg2d_nsa
1168      o update autodiff support routines
1169      o re-initialise hfac after ctrl_depth_ini
1170      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1171    * Adding verification for 5x5 box (4-layer) bottom topography control
1172    
1173    checkpoint58g_post
1174    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1175       used for mean seasonal cycle, mean diurnal cycle); add an example
1176       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1177    o pkg/ggl90:
1178      - add parameter (minimum surface kinetic energy)
1179      - fix bug (avoiding division by zero)
1180    o couple pkg/thsice to pkg/seaice:
1181      - modify advection in seaice to accomodate new scalar fields to be advected
1182      - only muliDimAdection scheme work with seaice/thsice
1183      - mapping of thsice-variables to seaice-variables, back and forth
1184      - does not break the verification experiments, but does not give the
1185        desired results either
1186    o pkg/seaice
1187      - make (default) second order advection a bit less confusing?
1188    
1189    checkpoint58f_post
1190    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1191      to pkg/seaice):
1192      - new routines thsice_map_exf and thsice_get_exf provide the interface
1193      - add an additional formal parameter to thsice_solve4temp
1194    o pkg/exf:
1195      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1196      - correct Stefan-Boltzmann constant
1197      - new parameter for longwave surface emittance
1198      - separate some stuff from exf_bulkformulae into new routines  
1199        exf_radiation, exf_wind
1200      - add new parameters and constants: longwave emissivity for ocean, ice
1201        and snow, evaporation parameters over ice
1202      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1203        either wind from stress or stress from wind
1204    o pkg/thSIce:
1205    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1206    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1207       and THSICE_CALC_THICKN
1208    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1209    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1210      to make debugging easier.
1211    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1212    o pkg/bulk_force:
1213      - clean-up comments and parameters ;
1214      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1215    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1216      generate new output for test-experiment: aim.5l_cs.thSI
1217    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1218      testreport accordingly
1219    
1220    checkpoint58e_post
1221    o SEAICE_CGRID adjoint done
1222    o R_STAR adjoint implemented.
1223      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1224      * need to sort out init. of h0facc, etc.
1225    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1226      to be able to use it in pure forward.
1227    
1228    checkpoint58d_post
1229    o upgrade simple test-experiment to tutorial example:
1230     step.1: duplicate the experiment and (step.2) will remove the old copy.
1231      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1232      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1233      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1234      tutorial_global_oce_biogeo    <- copy of dic_example
1235      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1236      tutorial_plume_on_slope       <- copy of plume_on_slope
1237      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1238      tutorial_global_oce_optim     <- empty for now (David ?)
1239      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1240     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1241    o correct a sign problem in cost_scat.F
1242    o obcs and ptracers: fix boundary conditions for advections schemes
1243      with larger stencil
1244    o thsice adjoint: start
1245    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1246      completeness
1247    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1248      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1249    o ptracers adjoint:
1250      * avoid extensive recomputatations
1251      * fix missing re-init. of gptr (missed by TAF)
1252    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1253      me to turn off the excessive output to STDOUT that this package produces
1254    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1255      and add those terms in Vector-Invariant formulation.
1256    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1257      if the control period (xx_hfluxperiod etc) is 0
1258    o in profiles pkg, clean routines and fix details
1259    o in ecco pkg, reading ssh data:
1260      fix problem in case the model does not start at iter0=0
1261    o fix mnc-pickup/restart for ptracers
1262    o new package prifiles:
1263      code to compute profile-based cost by Gael Forget
1264      (modifs in ecco, ctrl, autodiff)
1265    o Benign bug fix in initialization (spotted by M. Mazloff) of
1266      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1267    
1268    checkpoint58c_post
1269    o adjoint: finish NLFS adjoint and provide reference output in
1270      verification/global_ocean.90x40x15/results_ad_nlfs
1271    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1272      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1273      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1274      with SEAICE_CGRID defined.
1275    o move calendarDumps from "data" to "data.cal" and clean-up the code
1276      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1277    o add useEXF & useCAL flags (for now, set in hard-coded way)
1278    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1279      (were missing in NH mode, and wrong in quasihydrostatic mode).
1280      waiting for Chris updated version of calc_gw to add those CALLs.
1281    o fix bug in quasihydrostatic S/R ;
1282      add a test for this option: global_ocean.90x40x15.qshyd
1283    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1284      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1285    o add on/off flag useOffLine for package OFFLINE
1286    o seaice:
1287      - modify advection so that it works also on the C-grid
1288      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1289        problem in multi-tile runs with C-grid
1290      - add flags for clipping ice velocities and/or masking solver forcing
1291      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1292        C-grid solver
1293      - added a few comments to seaice_diffusion.F
1294      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1295        are now exclusive)
1296      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1297        required re-ordering the code a little:
1298       + make DAIRN global variable (defined in SEAICE)
1299       + move computation of the viscosities eta and zeta into a new separate
1300         routine (because I need to recompute them in seaice_ocean_stress.F)
1301    
1302    checkpoint58b_post
1303    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1304      update output.txt of exp. aim.5l_cs.thSI
1305    o various mnc cleanups and improvements:
1306      + shrink lookup tables by factor of ~4
1307      + better error reporting when running out of lookup space
1308      + able to handle longer path/file names (up to 500 chars)
1309    o adjoint:
1310      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1311      - TBD: "hidden" mom_vecinv recomp. in dynamics
1312    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1313     (allow to differentiate between forcing components using new integer flags:
1314      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1315     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1316    o ecco
1317      - enable trend removal from SSH anomaly obs.
1318    o adjoint
1319      - a fix for PmEpR when #undef EXACT_CONSERV
1320      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1321      - try to fix "hidden" recomp. in forward_step for NLFS
1322        (NLFS seems broken sometimes after I checked it in)
1323    o seaice:
1324     - add c-grid version of the dynamic solver:
1325       + three new routines that are the c-grid substitute lsr, dynsolver
1326         and ostres
1327       + put a few fields that were local to dynsolver into global common
1328         blocks, so that I can move the computation of stresses etc into
1329         seaice_lsr (saves coding but may break the adjoint).
1330     - replace more hardwired parameters by runtime parameters
1331     - add ice masks that mask the rhs of the implicit solvers where there
1332       is no ice (commented out in seaice_dynsolver, because i am not sure
1333       if this works properly), eventually this should replace the clipping
1334       of ice velocities in seaice_dynsolver to +/-40cm/s.
1335    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1336      include it only where its needed
1337    o move balancing of fluxes before the call of external_forcing_surf
1338    o seaice:
1339      - correct units of turning angles (now they are really in degrees)
1340      - move computation of GWATX/Y out of main routine into dynsolver
1341      - initialize GWATX/Y in seaice_init
1342    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1343      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1344    o seaice: add runtime flags for turning angles (default to zero)
1345    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1346      and trend from exf forcing and ctrl control adjustments
1347    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1348      (since checkpoint57x_post)
1349    o change the default rotation period to 86164.s = the Earth rotation
1350    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1351      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1352    o seaice advection: add code for choosing between the default (2nd order
1353      central differences) and multiDim advection schemes provided by
1354      pkg/generic_advdiff
1355    o seaice:
1356      - removed all references to SEAICE_GRID.h fields from
1357        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1358        (cubed-sphere configuration will change a little)
1359      - grid computations in seaice_init are obsolete now.
1360      - cleaned up code a little so that is easier to read (hopefully).
1361      - added new (better?) discretizations of default advection and diffusion
1362        (turn on with SEAICEuseFluxForm)
1363      - replace 1 in 3d global fields by kSurface in growth.F
1364      
1365    checkpoint58a_post
1366    o seaice:
1367      - bug fix in advect.F
1368    o shelfice:
1369      - separate shelfice load anomaly from pload (breaks with time
1370        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1371        Its default is 0., but it may be computed more cleverly from (unknown)
1372        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1373        done offline. A good approximation of the pressure load anomaly is
1374        necessary to avoid large initial adjustment processes underneath
1375        deep-reaching shelfice.
1376      - small fix in ISOMIP shelfice_thermodynamics
1377      - add more sophisticated thermodynamics of Hellmer (1989), this is
1378        now the default
1379      - give a few constants more intuitive names
1380    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1381      if bulk formulae are used in long integration (especially EmPmR). Turn
1382      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1383      if balancePrintMean, the imbalance that is substracted is printed to
1384      STDOUT.
1385    o fix bug (typo) in obcs_apply_eta.F
1386    o add a new package shelfice which enables us to model the circulation
1387      underneath shelf-ice with draughts of hundreds of meters.
1388     - works
1389     - to do: + include improved thermodynamics
1390              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1391                instead of new field kTopC
1392              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1393                instead of new field R_shelfIce and new code in ini_depth.F
1394                and ini_mask_etc.F?
1395              + adjust vertical mixing schemes?
1396    o seaice pkg:
1397     - add a cpp-flag to include a simple formula for a salinity dependent
1398       freezing point of sea water at the surface
1399     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1400       meridional stresses are now different (and hopefully correct)
1401    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1402       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1403       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1404    o pkg/diagnostics: add options and parameters for regional-statistics
1405       diagnostics ; define regions by reading a region-mask from a file
1406       (might add other options later)
1407    o pkg/bulk_force:
1408     - add option and parameters to use AIM surface-flux formulae.
1409     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1410       others forcing fields (defined in PARM05, parameter file "data") are loaded
1411       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1412     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1413     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1414     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1415       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1416     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1417    
1418    checkpoint58
1419    o add "--embed-source" option to genmake2 which, when the supporting
1420      tools can be compiled (as determined by genmake2) will turn on the
1421      embed_files package which then embeds the entire MITgcm source code
1422      (*.[fFhc] + Makefile) used for the build within the executable
1423      - requested by CNH but off by default
1424      - adds a paltry <9MB to the mitgcmuv executable in most cases
1425      - only writes the output when useEMBEDSRC in eedata is true
1426    o clean up 3-dim. relaxation codes:
1427      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1428      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1429      * Thanks to Tom Haine for testing!
1430    
1431    checkpoint57z_post
1432    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1433      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1434    o fix the pickup behavior for obcs in combination with ptracers
1435    o fix a bug in ptracers_external_fields_load
1436    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1437      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1438    o transfered surface NH pressure to eta field (if exactConserv).
1439    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1440         and update lab_sea output.txt file.
1441    o completing 3-dim. relaxation code: additional term
1442         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1443      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1444      * At compile time, in "EXF_OPTIONS.h" set
1445          #define  ALLOW_CLIMTEMP_RELAXATION
1446          #define  ALLOW_CLIMSALT_RELAXATION
1447      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1448          tauThetaClimRelax3Dim = 15552000.0,
1449          tauSaltClimRelax3Dim  = 15552000.0,
1450      * 3 cases:
1451          1) Use a constant-in-time 3-dim. field
1452          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1453          3) Real-time relax. to time-evolving prescribed field
1454    o Adding Laplacian-type smoothness constraint on
1455      initial and boundary (forcing) controls (ic, bc)
1456      * enable at compile-time via
1457        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1458      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1459      * Absolute scale somewhat unclear so far
1460      * no area weighting was included since no other cost term does so far
1461    
1462    checkpoint57y_post
1463    First step for a NLFS adjoint
1464    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1465    o new init. routines for calc_r_star, calc_surf_dr
1466    o still need to deal with ini_masks_etc
1467    o testreport seemed happy
1468    checkpoint57y_pre
1469    
1470    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1471    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1472    o add new offset feature to offline pkg (plus minor cleanup)
1473    o cfc fixes for final year of integration
1474    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1475      be in GCHEM_OPTIONS).
1476    
1477    checkpoint57x_post
1478    o fix testreport Pb in multiple test experiment.
1479    o cleanup our namelist syntax in verification:
1480      - make it more F95 standards compliant (some work still needed)
1481      - allows the vast majority of our tests to work with gfortran
1482    o Non-Hydrostatic:
1483     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1484     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1485    o Allow to apply AB on T,S rather than on AB(gT,gS):
1486     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1487     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1488       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1489     - need a "clever" read_pickup to restart from the other AB formulation
1490    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1491    o remove some unused variables (reduces number of compiler warnings)
1492    o adjoint
1493      * Disable useVariableViscosity for adjoint for time being
1494        (there are a number of extensive recomputations)
1495      * Initialize certain variables needed for adjoint
1496    
1497    checkpoint57w_post
1498    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1499                 fix the singleCpuIO RS version of MDSWRITEFIELD
1500       and add a WARNING if using globalFiles=T with multi-processors.
1501    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1502      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1503    o tracer advection scheme:
1504      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1505       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1506       was not very convenient).
1507      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1508       (further tests needed for the implicit DST & Flux-Limiter schemes).
1509    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1510      and sRef for convenience, handy, when you want to initialize
1511      ptracers in a large domain with a constant non-zero value. Also,
1512      untangle ptracers_init.F a little.
1513    
1514    checkpoint57v_post
1515    o change dome exp. to use variable viscosity in side-drag terms.
1516    o remove all the files from the cfc_offline test since they are now
1517      incorporated into tutorial_cfc_offline which has been producing
1518      identical results for a few days of testing
1519    o add new parameter: sideDragFactor to enable half-slip-side BC
1520      and change side-drag S/R to use viscosity from mom_calc_visc
1521      (can switch back by setting sideDragFactor=0.); affects results at
1522      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1523       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1524    o vorticity & strain are now computed without masking, to account for
1525      no-slip-side BC in variable viscosity calculation ; mask is applied
1526      anyway later on, before computing advection/coriolis terms.
1527    o modify exp4 to test new obcs support for reading from external files
1528      and for passive tracers
1529    o fix behavior of ptracers_monitor when monitor output is written to a
1530      netcdf-file; still not independent of monitor.F (writes in the same
1531      file).
1532    o change default value of tRef (put a uniform, meaningful value for ocean
1533      & atmos) and initialize sRef (was missing, as Martin mentioned).
1534    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1535      to be proportional to enstrophy dissipation length.  Thus,
1536       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1537      This is now consistent with Smagorinsky and with the manual.
1538    
1539    checkpoint57u_post
1540    o OBCS and PTRACERS: add open boundary support for passive tracers
1541      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1542        OB-values from file; this is not different from the way theta and salinity
1543        are treated
1544      - however, Orlanski-radiation conditions are not supported, and the model
1545        will stop if you use pTracers and Orlanski at the same time.
1546      - beefed up the rountine obcs_external_fields_load: now only those open
1547        boundary values are overwritten with values from files for which there
1548        are really files, otherwise the OB-fields remain untouched. This makes
1549        it possible to use different OBs at different ends of the domain (as
1550        with EXF)
1551    o reduce number of exch calls in shap_filt (s2).
1552    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1553      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1554    
1555    checkpoint57t_post
1556    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1557    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1558      same truncation, independent of the face number: affects affects several
1559      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1560    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1561      note that biharmonic viscosity + no-slip was not tested in any experiment.
1562    o fix bug in non-linear free-surf side-drag ; generate new output for
1563      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1564    o make mnc honor the writeBinaryPrec flag for most kinds of output
1565    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1566    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1567      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1568    o add brackets in multi-terms sum to get same truncation, independent of
1569      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1570      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1571    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1572      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1573      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1574      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1575      Suggested values of viscosity parameters found in mom_calc_visc.
1576      Many new viscosity diagnostics available.
1577    
1578    checkpoint57s_post
1579    o Add clearing-house for viscosity calculations, mom_calc_visc and
1580      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1581      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1582      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1583      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1584      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1585      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1586      ViscAhStrain and viscAhTension are now retired.
1587    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1588    o In response to JMC's bug report, genmake2 now ignores any soft-links
1589      that it finds in the *current* directory when searching for files.
1590      Soft-links found in any other source directories will still work as
1591      they did before.
1592    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1593      a C routine to unlimit the stack size
1594    o mnc-ify pkg/aim snapshot vars
1595    o mnc-ify pkg/land as requested by Daniel
1596    o various changes to mnc including:
1597      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1598      - output can now be grouped so that all files within a group
1599          change the ITER portion of their names in lock-step together
1600      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1601          and works with both EXCH1 and EXCH2 (but needs more testing)
1602      - writing works for all verification test cases w/ g77 on Linux
1603    
1604    checkpoint57r_post
1605    o make MNC variable initialization happen earlier
1606    o add diagnostics for (almost) each term of the momentum Eq.
1607    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1608    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1609    o remove MINIMAL_TAVE_OUTPUT option ;
1610      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1611    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1612      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1613    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1614    o add time-dependent SST, SSS control
1615    o cost terms in ecco/ modularized (new cost_generic.F)
1616    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1617    o new infrastructure for seaice model vs. obs misfits in seaice/
1618      * driver from the_main_loop.F is seaice_cost_driver.F
1619      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1620      * gradient check in Exp. 6a of natl_box_adjoint/
1621    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1622      (see README file)
1623    
1624    checkpoint57q_post
1625    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1626    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1627      - bug was reported by Jean-Michel and Ian Fenty
1628    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1629      update exp. cpl_aim+ocn output.
1630    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1631      Needed for high-res. runs with large global files
1632      to be able to limit tapelev size
1633    o Changed some tests for adjoint:
1634      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1635      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1636      * global_ocean.90x40x15/ back to default 3-level checkpointing
1637    o Modifications to enable scripted COMMON to MODULE conversion
1638      * verification/OpenAD/code/ has necessary scripts and description;
1639      * converts, compiles and runs successfully;
1640    
1641    checkpoint57p_post
1642    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1643    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1644      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1645    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1646    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1647      (was already the case for dissipation with mom_vecinv,
1648       and also the case for grad.PhiHyd when staggered-timeStep)
1649      This will allow to put dissipation out-off the AB time-stepping.
1650     Unfortunately, affects truncation error. Update output of exp. that "fails"
1651      (cg2d matching number) and leave the others for later: front_relax(10),
1652      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1653      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1654    
1655    checkpoint57o_post
1656    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1657      (2) its ready to be documented during the 20050801 DocFest
1658    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1659      for ideal_2D_oce and lab_sea on linux_ia32_g77
1660    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1661      in global1x1_tot/code_seaice_adj to access indices 32, 33
1662      (worth another tag)
1663    
1664    checkpoint57n_post
1665    o adding precip control xx_precip 32
1666    o adding swflux control xx_swflux 33
1667    o Replacing 10 forcing penalty cost routines by 1 generic.
1668    o Implementing partitioning in time-mean and variable adjustment
1669      for atmos. state.
1670    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1671    o in natl_box_adjoint:
1672      * updated exp 1 to 10
1673        (but does not have time-mean vs. variable split results yet)
1674    o updated global1x1/*_seaice_adj/
1675      to incorporate latest changes
1676    o enable useSingleCpuIO for mdsio vector routines
1677      (applies in particular to tapelev I/O)
1678    o removed inefficient K-loop in all active_file*control*.F
1679    
1680    checkpoint57m_post
1681    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1682      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1683    o pkg/exch2: filling of face-corner halo regions is optional
1684      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1685    
1686    checkpoint57l_post
1687     tag before updating tutorials (pre-release-2)
1688    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1689       for output and interpolation of input fields onto model grid)
1690    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1691       Affects results of exp. rotating_tank ; update output.txt.
1692    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1693          and taking the square quantity and/or using a fraction-weight field.
1694    o fix aim_diagnostics_init.F mate numbers.
1695    o add mnc output capability to diagnostics/diagstat and update
1696      our cvsignore files for the ACSII output generated
1697    
1698    checkpoint57k_post
1699    o lab_sea now uses diagnostics package and provides a suite of
1700      new EXF diagnostics output.
1701    
1702    checkpoint57j_post
1703    o exf
1704      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1705        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1706        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1707      * extended diagnostics output
1708        - now includes all EXF variables
1709        - hs, hl moved to common block
1710        - separate S/R for diagnostics, called after ctrl vector is added
1711        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1712        - EXFqnet contains true Qnet (i.e. includes qsw)
1713      * updated verif. lab_sea, global_with_exf
1714      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1715        to ensure that diagnostics sees a true EXFqnet
1716    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1717    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1718      several times with different frequencies.
1719    o mnc-ify the thsice package as requested by Daniel Enderton
1720      - the monitor--MNC output needs work
1721      - many attributes need to be added (most are currently blank)
1722    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1723      - many attributes need to be added (most are currently blank)
1724    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1725    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1726    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1727      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1728         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1729    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1730     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1731    
1732    checkpoint57i_post
1733    o Diagnostics package was changed: diagnostic allocation is now deactivated
1734      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1735    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1736      add 1rst Order upwind vertical Shear.
1737    o add a quick fix for A/B checkpointing in OFFLINE mode
1738    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1739      end-run around the C/Fortran linking horror in eesup/src/timers.F
1740    o added pkg/runclock: allows user to terminate run based on wall clock
1741    o added non-hydrostatic scaling parameter: nh_am2
1742    o pkg/my82: futile attempt to make results compiler-independent by adding
1743      some "_d 0", etc. no effect.
1744    o for mnc output, fill the 'T' coordinate var with myTime and create a
1745      separate 'iter' variable for iteration count
1746    o pkg/diagnostics:
1747      add new capability: output of Global/Regional & per-level statistics ;
1748      tested against monitor output (including land & thSIce) on various exp.
1749    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1750    
1751    checkpoint57h_done
1752      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1753      data.diagnostics, data.gchem, data.ptracers) is done.
1754    
1755    o pkg/diagnostics: prepare for Global/Regional statistics.
1756      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1757    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1758      and rename it: DIFFERENT_MULTIPLE
1759    
1760    checkpoint57h_post
1761    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1762    o pkg/diagnostics: change output frequency, now in seconds (instead
1763      of Nb of iterations). This requires to change data.diagnostics.
1764    checkpoint57h_pre
1765    
1766    o in mnc, let the user create the output dir if both mnc_outdir_date
1767      and mnc_outdir_num are false
1768    o add fflags() to pkg/diagnostics which allows one to specify, on a
1769      per-file basis, the file precision [default behavior is unchanged]
1770    o added diagnostics to pkg/kpp, including computation of mixed layer
1771      depth based on a temperature/density criterion
1772    o updated verification/natl_box to test the new pkg/kpp diagnostics
1773    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1774    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1775    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1776      not mnc -- this mistake was found by JMC and is now corrected
1777    
1778    checkpoint57g_post
1779    o add Adams-Bashforth 3rd Order time stepping:
1780      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1781      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1782    checkpoint57g_pre
1783    
1784    o make lambda[Theta,Salt]ClimRelax spatially varying
1785      (default remains spatially uniform constant based on tau)
1786    o added new control variables
1787      * init. uVel, vVel, etanN
1788      * lambda[Theta,Salt]ClimRelax
1789    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1790      (suggested by G. Forget)
1791    
1792    checkpoint57f_post
1793    o add parameter "baseTime" = model base time = time at iteration zero
1794      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1795      account for baseTime shift
1796    o move Coriolis arrays from PARAMS.h to GRID.h
1797    checkpoint57f_pre
1798    
1799    o mnc-ifying the seaice package
1800    o introduced an alternative length scale calculation for use in the limiting
1801      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1802    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1803    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1804      as well as grad(vort3).  Made it compatible with both approximate form
1805      for the cubed sphere and full form of these gradients.  Added flag
1806      useFullLeith to select between approximate and full form.  
1807    o add "d0" in getcon.F to reduce differences between compilers/platforms
1808      update output.txt of exp. fizhi-gridalt-hs
1809    o change port_rand funtion to allow to set the seed.
1810    o fix obscure MNC bug involving conversion between reals and integers
1811      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1812        new version is now more standards-compliant
1813    o adjoint-related modifications
1814      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1815      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1816      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1817    
1818    checkpoint57e_post
1819    o Adding eddy stress controls a la Ferreira et al.
1820    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1821    
1822    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1823      update output.txt of exp. fizhi-gridalt-hs
1824    o add more "Z" dimensions and associated coordinate vars to MNC
1825    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1826    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1827      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1828      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1829      months and years.  Requires pkg/cal.
1830    o diagnostics: add pickup functionality
1831      - off by default for backwards compatibility
1832      - current version only uses MDSIO -- MNC will be added
1833    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1834    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1835    
1836    checkpoint57d_post
1837    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1838    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1839      output from the diagnostics package
1840    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1841    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1842      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1843    o add coordinate variables to the MNC output from the diagnostics package
1844    o change MNC-flags default value: true when useMNC=TRUE
1845    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1846      the ability (off by default) to read the grid information using MNC
1847    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1848    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1849    o do snap-shot diagnostics at the middle of the time-interval (instead of
1850      at the end).
1851    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1852      new test for AIM with thSIce + slab-ocean
1853    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1854    o move state variable diagnostics to the beginning of the time step ;
1855      (note: still needs some work specially for snap-shot diagnostics)
1856      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1857    
1858    checkpoint57c_post
1859    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1860    o generate new output.txt files on faulks with g77 & the new -ieee option
1861    checkpoint57c_pre
1862    
1863    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1864      update output.txt of exp. global_ocean.90x40x15
1865    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1866      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1867    o add saltFlux(+File) forcing capability with periodicExternalForcing
1868    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1869    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1870    o improvements for the MNC output from DIAGNOSTICS:
1871      - correct handling of the unlimitied dimension
1872      - all dims now have associated coordinate variables
1873      - variables located at U, V, and Corner ("Z") points are now written
1874        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1875        *all* data points are output
1876    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1877    o added pkg/seaice/seaice_monitor.F
1878    o mdsio_readfield.F can now read files visible only to master MPI process.
1879    o pkg/seaice: some test code for ice-modified ocean stress
1880    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1881      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1882      spurious negative numbers for precipitation and humidity.  Will cause
1883      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1884    o pkg/ctrl/
1885      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1886        May be enabled via doPackDiag
1887      *  introduce z-scaling of
1888         + gradient (doZscalePack) and
1889         + control (doZscaleUnpack)
1890    o pkg/mdsio/
1891      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1892      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1893    
1894    checkpoint57b_post
1895    o simplify options in diagnostics_fill arguments (remove weird combinations)
1896    o fix MNC coordinate variables so that they now contain per-face index
1897      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1898      general, EXCH2 grids are only aligned to a "local" coordinate system
1899    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1900    o Implement instantaneous output within pkg diagnostics:
1901      setting a negative frequency in data.diagnostics produces
1902     "snap-shot" output (as opposed to time-average if freq > 0)
1903    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1904      NOTE: change ptracer diagnostics name: use 2 characters to work with
1905            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1906    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1907      becomes the coordinate variable for the 'T' dimension
1908    o add CF-style coordinate variables to MNC
1909      - just a first cut:  numbers are meaningless on the cubesphere and
1910        missing along the T axis but otherwise it works!
1911    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1912    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1913    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1914      this is based directly on what the model compute, so that the content of
1915      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1916    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1917    o clean up build options files for SunOS, in particular
1918      - remove -traditional from xmakedepend
1919      - change -xarch=v9 to -xarch=native for f77
1920      - restore use of make (not gmake)
1921      - add CC=gcc if using g77
1922    o changes per discussion of AM, JMC, & EH3 today:
1923      - move redundant "grid" variables out of "state" -- in preparation of
1924        creating proper CF-style coordinate variables and in recognition
1925        that any/all grid variables can be easily copied (eg. w/NCO) from
1926        the grid files into any of the other NetCDF files
1927      - *always* output grid variables with MDSIO (this will eventually be
1928        changed)
1929      - output MNC grid file if useMNC is true
1930    o every instance of _END_MASTER() has been found and replaced with
1931      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1932      preprocessors
1933    o re-arrange diagnostics pkg initialisation:
1934     - allow each package to extend the available diagnostics list
1935     - add some checking and fix small problems (multi-threaded, ...)
1936     - new S/R diagnostics_fill (replace fill_diagnostics):
1937       look through the short list of active diag. (instead of the long list)
1938       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1939    
1940    checkpoint57a_post
1941    o this set of changes restores TAMC compatibility
1942      tested for global_ocean.90x40x15 adjoint on trough
1943      (what a pain)
1944    
1945    checkpoint57a_pre
1946    o some modifs in tools/build_options for sunos
1947    o call ctrl_pack for ctrl at end for optimcycle=0
1948    
1949    checkpoint57
1950    o add horizontal bi-harmonic viscosity for vertical velocity
1951      - new parameter viscA4W (defaults to viscA4)
1952      - affects only non-hydrostatic code
1953      - to be done: no-slip lateral boundary conditions
1954    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1955    o implement Implicit Vertical advection for pTracers
1956    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1957      (implemented also for implicit vertical diffusion & advection)
1958    o OBCS: extend application of tracer open boundary conditions
1959      to a strip beyond the boundary of width Olx/Oly
1960    o add call monitor to TAF set of required calls (flow directives)
1961      and include in natl_box_adjoint
1962    o untangle a few ifdefs related to cost, ctrl, autodiff
1963      untangel a few ALLOW_ECCO_OPTIMIZATION
1964    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1965      (theta2, salt2 in ecco_cost_weights)
1966    
1967    checkpoint56c_post
1968    o OBCS as control variables
1969      - update ctrl_ad_diff.list, obcs_ad_diff.list
1970      - remove balance of obcs controls from default
1971      - fix index bug nobcs in ctrl_init
1972      - fix dummy fields filen in ctrl_pack
1973      - add dummy weights for obcs
1974    o lsopt: comment out fort.94 output
1975    o optim:
1976      - remove unnecessary header files
1977      - adjusted namelists
1978      - add xerbla.F to Makefile
1979    o exf:
1980      - multiple modifications of exf_check_range
1981      - unit change in exf_init_runoff from [m/year] to [m/s]
1982    o mdsio:
1983      - i/o-vector change debugLevel from debLevA to debLevB
1984    
1985    checkpoint56b_post
1986    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1987      is called from DO_THE_MODEL_IO
1988      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1989      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1990      - clean up PTRACERS_WRITE_TIMEAVE a little
1991    o add another verification experiment that tests both the cfc-pkg and
1992      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1993      reactive tendencies treated inline with regular timestepping
1994    o testreport previously did a lousy job of comparing small numbers, so
1995      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1996      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1997      testreport.
1998    o ptracers_monitor: bug fix for MPI
1999    
2000    checkpoint56a_post
2001    o GCHEM: finish reorganizating the package
2002      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2003        (introduces another 3D-array for each passive tracer, but only if
2004        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2005        gchemTendency is not needed because the timestep is done separately)
2006      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2007      - GCHEM is now---more or less cleanly---separate from PTRACERS
2008      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2009        so clear to me how that should be done in a general way.
2010    o CFC: improve formatting of output in CFC_ATMOS
2011    o PTRACERS:
2012      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2013        that ALL experiments with ptracers enable can be checked. This makes
2014        GCHEM_MONITOR obsolete.
2015      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2016        monitorFreq
2017      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2018    o add PTRACERS (PTR0[1-5]) to testreport output
2019    o exf_check_range:
2020      * default changed to .TRUE.
2021      * will check values for niter0 if debLevA, every timestep if debLevB
2022      * STOP in exf_check_range if 'out of range'
2023      * range chosen generous to allow for potential extema
2024      TBD: a version with stricter range
2025           permitted range would be runtime parameters
2026    o GMredi:
2027      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2028      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2029      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2030    o GCHEM:
2031      - move call to GCHEM_FORCING_SEP, so that it is now called before
2032        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2033      - introduced a useGCHEM runtime flag and applied it everywhere.
2034      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2035        this flag is now only visible within GCHEM-pkg routines.
2036      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2037        be replaced by a 3D array that is computed before thermodynamics; for
2038        this, the tracer ID iTracer had to be included into the parameter list
2039        of ptracers_forcing
2040      - set up forward_step to call gchem_forcing, that will replace
2041        gchem_forcing_int in ptracers_forcing
2042      - cleaning up
2043    o small cleaning of exch2: remove files that are also in eesupp/src
2044    
2045    checkpoint56
2046    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2047    o mnc: cleanup "full" files--fixes out-of-memory problem
2048    o ECCO-GODAE
2049      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2050      * fully merged and updated from SIO code
2051        windstress sign change affects
2052        - exf_inscal_[u/v]stress
2053        - sign of xx_tau[u/v] adjustments
2054        - signs in cost_scat
2055      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2056      * natl_box_adjoint updated and compressed
2057      * 2-level checkpoint switch added
2058        (tested in EXP. 1 of natl_box_adjoint)
2059      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2060    o SVD
2061      * first complete, non-hacked version for SVD calculations
2062      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2063        performed via direct access files admtlm_vector.it????
2064        (via ctrl_[un]pack)
2065      * optimcycle is used for ARPACK iteration counter
2066        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2067      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2068        and add linear transforms where necessary
2069      * controls are initial/final SST, SSS (can be extended; need to check
2070        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2071    o mdsio: filename info to both stderr, stdout
2072    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2073      from sign change
2074    
2075    checkpoint55j_post
2076    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2077      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2078    o add consistent build directories and .cvsignore files to verification
2079    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2080    o make all subroutines 30 or less characters in length for certain older
2081      compilers to work (a thorough search only turns up two routines in
2082      pkg/ptracers)
2083    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2084      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2085    
2086    checkpoint55i_post
2087    o change arrays for total vertical diffusivity (2.D if explicit,
2088      3.D if implicit) ; each ptracer uses its own background value.
2089    o added mnc/NetCDF output capability to ocn_compon_interf
2090      - added bits to verification/cpl_aim+ocn so that it can run on
2091        ITRDA and other clusters without the mpirun "-wd" option
2092    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2093      configuration
2094    o give MNC the ability to create additional files rather than
2095      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2096      - the default is just less than 2GB which is a practical limit
2097        on many systems
2098    o Compute the non-local term using either KPP vertical diffusivity (=default)
2099       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2100    
2101    checkpoint55h_post
2102    o add verification test "vermix"
2103    o remove all the *_ioinc flags and replace with the single global
2104      outputTypesInclusive flag
2105    o allow to set a vertical profile of vertical diffusivity for T & S
2106    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2107    o useMNC moved from data.mnc to data.pkg
2108    
2109    checkpoint55g_post
2110    o Renaming carbon AD experiments to comply with testreport conventions
2111    o Updating adjoint of Held-Suarez hs94.1x64x5
2112    o Fixing directives for non-ECCO forward_step, after ECCO directives
2113      have been fixed to avoid recomp. of do_oceanic_phys
2114      Works well for global_ocean.90x40x15,
2115      but recomp. issue remains for carbon
2116    o Updating adjoint output for natl_box_adjoint after
2117      pkg/ecco has been modified (see taga c55d_post)
2118    
2119    checkpoint55f_post
2120    o rename to timeave_init_fixed
2121    
2122    checkpoint55e_post
2123    o some delicate re-shuffle of store directives to avoid one
2124      extra call of do_oceanic_physics
2125      affects ecco_the_main_loop.F, do_oceanic_physics.F
2126      checkpoint_lev1_directives.h
2127    o NB: this may break global_ocean adjoint temporarily,
2128      but it is clear how to fix it. Will do later, need this now.
2129    
2130    checkpoint55d_post
2131    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2132    o ecco_cost_weights is modified to 1x1 runs
2133    o modifs to allow observations to be read in as
2134      single file or yearly files
2135    o enable to read exf forcing fields as either
2136      single file or yearly files (flag useExfYearlyFields)
2137    checkpoint55d_pre
2138    
2139    o switch between 2-level and 3-level checkpointing
2140    o add ability of MNC to write local and "partial" (eg. 2D slices where
2141      the full 3D field is never actually stored) arrays to NetCDF files
2142      with the correct (that is, the complete multi-dimensional) set of
2143      array indicies
2144      - used in mom_vecinv() to write the diagFreq output
2145      - tested (demonstrated) in verification/aim.5l_cs
2146    o further mnc-ification
2147      - add verification/lab_sea to the list with mnc setups
2148      - fix undefined mnc v-names in cd_code
2149      - add kpp to mnc output (both snapshot and timeave)
2150    o non-hydrostatic code
2151      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2152        in calc_gw.F
2153      - defaults to viscAh
2154      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2155        friction or Leith) in non-hydrostatic mode, as long as there is
2156        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2157    o pkg/cost
2158      extend simple cost functions to treat time mean quantities
2159      (T,U,V) via cost_accumulate_state from cost_tile
2160    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2161        be 2 times larger than the minimum size the advection scheme requires.
2162        now get a perfect conservation of salt in advect_cs test-exp (updated)
2163    o GGL90 (Gaspar's TKE mixed layer)
2164      - add horizontal diffusion of TKE, requires exchanges in
2165        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2166        default. In OPA there is no horizontal diffusion of TKE but the
2167        mixing coefficients are computed from a horizontal average of TKE of
2168        6 points or so. I think that diffusion has a little more physical
2169        justification.
2170      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2171        was in vain)
2172      - mask tke-variable in ggl90_init
2173    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2174    o fix biharmonic diffusion on CS-grid.
2175    o more obcs stuff
2176      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2177        for reading boundary values. This routine is called from
2178        obcs_prescribe_read
2179      - updated obcs_check
2180      - changed sponge layer relaxation parameter units for days to seconds
2181      - turned off sponge layer by default
2182      - changed argument list of OBCS_CALC to myTime+deltaTclock
2183      - fixed about 35 bugs in obcs_external_fields_load
2184    
2185    checkpoint55c_post
2186    o obcs stuff
2187      - new runtime flags useOBCSprescribe, useOBCSbalance
2188      - re-arranged obcs_calc
2189      - moved exf_getobcs to obcs_prescibe_read
2190        obcs_prescibe_read is called after ORLANSKI stuff
2191        and independent of it (executable can contain all).
2192      - updated obcs_check
2193      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2194        These may be necessary only if tangential velocities are
2195        prescribed at OB, not sure, needs testing.
2196    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2197      which simplifies the calls and passes the ifc check-bounds test
2198    
2199    checkpoint55b_post
2200    o add a 2D scalar, Z location, exchange_2 routine.
2201    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2202      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2203      affects advect_cs results (for the wrong reason): update output.txt
2204    o use a more standard discretization for biharmonic viscosity ;
2205     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2206      affects results of dome set-up: update output.txt
2207    o fix gad_advection.F (CubedSphere part), back to version 1.23
2208    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2209    
2210    checkpoint55a_post
2211    o merged code to
2212      * prescribe/read time-dependent open boundaries
2213        (works in conjunction with exf, cal)
2214      * sponge layer code for open boundaries
2215      * each boundary N/S/E/W now has its own CPP option
2216        (healthy for the adjoint)
2217    
2218    checkpoint55
2219    o up-to-date adjoint of previous breaks
2220      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2221      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2222      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2223      - carbon: * remove tr1-related adjoint verification
2224                * add ptracer as control variable
2225    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2226      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2227    
2228    checkpoint54f_post
2229    o in verification/carbin/ remove experiment related to
2230      ALLOW_PASSIVE_TRACER (array tr1 etc)
2231      code_ad/ input_ad/ results_ad
2232    
2233    o add two new packages
2234      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2235        + subject to optimization (memory)
2236      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2237        + subject to reordering (many GOTOs in the original code)
2238        + so far opps is called for every (i,j) point, and then operates in
2239          the vertical; one may want to reorder the scheme in order operate in
2240          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2241          fields)
2242    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2243      - all verification tests compile and run with linux_ia32_g77
2244      - defaults are compatible with current input files--nothing
2245        should change if you were not previously using MNC
2246      - MNC output has been added in numerous places (eg. timeave)
2247        but there are still a few writes not yet do-able with MNC
2248        (this is in progress)
2249      - flags now allow for either/or/both use of MDSIO and MNC and
2250        documentation will soon follow
2251      - numerous small formatting cleanups for ProTeX
2252    o add version info (via BUILD_INFO.h) to MNC and stdout
2253    
2254    checkpoint54e_post
2255    o add two new packages
2256      - pp81 (Packanowski and Philander, 1981), Richardson number and
2257        stratification dependent mixing
2258      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2259      - these scheme operate in a similar manner as KPP (without ghat, of
2260        course), however there is only one diffusivity that is used for both
2261        temperature and salinity (and passive tracers)ç
2262    o add offline package
2263    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2264      provided by Stephanie Dutkiewicz
2265    o genmake2: add ability to search for C compilers and cleanup test output
2266      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2267    
2268    checkpoint54d_post
2269    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2270    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2271      leading to additional shift by 5 days each year of integration
2272       (i.e. leading to considerable offset over the years)
2273    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2274    o start with no AB and no initial filtering (staggerTimeStep):
2275      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2276    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2277      (external loading & cpl import/export stay in forward_step.F)
2278    o update coupling interface to work with new staggerTimeStep
2279    o change MDSIO ptracers_pickup.
2280    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2281    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2282    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2283    
2284    checkpoint54c_post
2285    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2286      this affects (truncation error) output.txt of test-exp:
2287       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2288    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2289    o change Qnet to always be the net heat flux, (+upward).
2290      affects (truncation error) output of natl_box exp.: updated
2291    o define the max number of passive tracers in PTRACERS_SIZE.h
2292    o start to test mnc routinely in exp0
2293    o add sea-ice loading (sIceLoad) as a new forcing field.
2294    
2295    checkpoint54b_post
2296    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2297       impressive on Altix and Opteron systems)
2298    o diagnostics can now write NetCDF files through the mnc package
2299    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2300    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2301    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2302      affects (truncation error) output of lab_sea & natl_box exp.: updated
2303    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2304    
2305    checkpoint54a_post
2306    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2307    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2308    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2309    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2310      + internal_wave (shift in writing cg2d_ini_res)
2311    checkpoint54a_pre
2312    
2313    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2314      - modified verification/lab_sea and natl_box_adjoint accordingly
2315    
2316    checkpoint54
2317    checkpoint53g_post
2318    o prepare splitting of thermodynamics: store convect.counter in common block
2319    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2320      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2321    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2322    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2323    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2324    o restore adjointability
2325    
2326    checkpoint53f_post
2327    o modifications that affect AIM experiment results (update output.txt):
2328      - no advection of S at top interface Nr (pkg/generic_advdiff)
2329      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2330    o AIM pkg:
2331      - include stability function into surf.Flux derivative relative to Tsurf
2332      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2333    
2334    checkpoint53e_post
2335    o merged cylindrical coord configuration
2336    o added rotating_tank experiment
2337    checkpoint53e_pre
2338    
2339    checkpoint53d_post
2340    o faulks upgraded: re-generate output.txt that have changed:
2341       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2342    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2343    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2344    o added Sadourny discretization of Coriolis
2345      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2346      - re-enabled use of omega3 (useAbsVorticity)
2347    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2348      vector-invariant equations
2349      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2350    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2351      hopefully without new bugs
2352      - still to do: biharmonic friction for non-hydrostatic w
2353    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2354    o regenerated output for global_ocean_ebm (using -ieee)
2355    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2356      of mom_common/
2357      - simple re-arrangement of instructions within computing loop
2358    checkpoint53d_pre
2359    
2360    checkpoint53c_post
2361    o new version of coupler for AIM+thSIce and Ocean models
2362     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2363     - land: change Evaporation of snow
2364     - aim with thSIce: fix bug in snow-precip.
2365    o changes to calc_gw.F
2366     - bug fix for w^2 term near the bottom boundary
2367     - (hopefully) improve the lateral slip boundary condtions for use with
2368        partial/looped cells
2369      - because the bug fix changes two verification experiments anyway (exp5
2370        and plume on slope), change the lateral boundary condition from half slip
2371        to the value of no_slip_sides
2372    o ebm package wasnt quite up to the parallel task. Fixed that.
2373    o Adjoint of EBM package + verification
2374      * TLM OK
2375      * ADM not sufficient accuracy yet (needs further testing)
2376    
2377    checkpoint53b_post
2378    o Commiting new energy balance model to repository
2379      * package is pkg/ebm
2380      * verif. is verification/global_ocean_ebm
2381      * references are in ebm_driver.F
2382    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2383    C        Global thermohaline circulation. Part I:
2384    C        Sensitivity to atmospheric moisture transport.
2385    C        J. Climate 12(1), 71-82
2386    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2387    C        Global thermohaline circulation. Part II:
2388    C        Sensitivity with interactive transport.
2389    C        J. Climate 12(1), 83-91
2390    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2391    C        Destabilization of the thermohaline circulation
2392    C        by atmospheric eddy transports.
2393    C        J. Climate 7(12), 1870-1882
2394    o Will need long integration testing.
2395    checkpoint53b_pre
2396    
2397    o created pkg/mom_common in preparation for variable viscosity code
2398    o renamed and split ini_mnc_io
2399    o pkg/land: only liquid water can diffuse or run-off
2400    o AIM using land: soil wetness availability account for snow
2401    o added printMapIncludesZeros to EEPARMS namelist
2402    
2403    checkpoint53a_post
2404    o restore TAMC compatiility for exf_constants.h
2405      (no usage of _d in .h)
2406    o Additional storing in KPP in an attempt to fix
2407      TAMC problem with adjoint of KPP code.
2408      (no success...)
2409      Identical code works fine with TAF.
2410    o Fixed verification/natl_box_adjoint experiments.
2411      Initial conditions for Experiments 4 and 5 are now
2412      set to "SEAICE_initialHEFF=0", which is more reasonable,
2413      and hence gives results closer to that of Experiment 2.
2414      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2415    
2416    checkpoint53
2417    o stable checkpoint with up to date adjoint
2418      TLM tests only run for 1st grdchk at the moment. Its unclear if
2419      this is a code problem or a problem with resetting code for g_
2420      variables that is being autogenerated wrong.
2421      Otherwise:
2422       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2423       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2424         are both still in chaos following their security messes.
2425    
2426    checkpoint52n_post
2427    o various build (mostly genmake2) changes including:
2428      - ability to build/run more easily within Cygwin and MacOS X
2429      - more complicated Makefiles with a stronger dependence on Gnu Make
2430    o pkg/seaice modifications
2431      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2432        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2433        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2434      - changed proxy for geostrophic velocity and updated
2435        verification/lab_sea/results/* accordingly
2436      - removed ADI dynamic solver from pkg/seaice
2437      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2438        they caused a segmentation fault under certain circumstances
2439      - removed unused field WATR
2440    o bug fix in exf-package:
2441      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2442         now reflect that.
2443    o small fixes in the cal-package:
2444      - set reference date to first of January for the 'model'-calendar
2445      - failing of cal_CheckDate in cal_FullDate now actually results in a
2446        warning
2447    o small modifications in exf-package to increase flexibility:
2448      - change climtempfreeze from a constant to a runtime parameter that
2449        is specified in data.exf_clim (default = -1.9)
2450      - introduce runtime parameter windstressmax (default = 2.0) that is
2451        specified in data.exf
2452    o fix in pkg/thsice:
2453      - update Evap (Tsf changes) to be consistent with Latent heat flux
2454      - maintain snow precipitation unchanged (even if Tsf >=0).
2455     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2456    
2457    checkpoint52m_post
2458    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2459      this does not change any of the results, because myIter=0 in swfrac always
2460      lead to jwtype=2 (the default anyway), but the call makes little sense
2461      as a default
2462    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2463    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2464      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2465    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2466    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2467    o extending useSingleCpuIO option to work with new exch2 I/O format
2468      - old-style, missing-tile I/O is still accessible by defining CPP
2469        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2470    o monitor package can write to NetCDF files and/or STDOUT
2471    o fix re-definition bug in MNC_GRID_INIT_ALL()
2472    o doc/api_reference added
2473      - a framework for building an API Reference Manual using all
2474        the "protex" comments embedded in the code
2475      - see pkg/generic_advdiff, pkg/mnc for examples
2476    o MNC:
2477      - make myThid the last argument for all subroutines
2478      - new default for the grid files: NO halos
2479      - add useMNC and other run-time flags
2480      - separate per-file-group handling of the unlimited dimension
2481      - early initialization of MNC w/ flags read at the eeboot stage
2482        and lookup tables set in initialize_fixed
2483      - write all MNC output to a freshly-created directory
2484    o thermodynamics sea-ice (thsice) is now tested with testreport.
2485    o test exp. advect_cs: use the standard cs32 grid ; update output.
2486    o Added functionality to grdchk:
2487      pick global i,j,k position (or nearest wet) where to perform check.
2488    
2489    checkpoint52l_post
2490    o new land formulation:
2491      a) use ground enthalpy as prognostic variable to ensure exact
2492         energy conservation.
2493      b) account for water temperature and for latent heat of freezing
2494         in all processes (rain, run-off, ground storage)
2495      c) compute surface and ground temperature implicitly.
2496    o aim_v23 modification for new land model:
2497      a) Treat separately land / ocean / sea-ice surface fluxes
2498         to allow implicit computation of land & sea-ice surface temp.
2499      b) add snow precipitation.
2500    checkpoint52l_pre
2501    
2502    o fix problem (when 1 tile is empty) in min/max monitor.
2503    o fix bug in timeAve (u,vZetatave in common block)
2504    o no restoring terms under ice for pkg/seaice
2505    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2506    o bug fix for pkg/seaice pickups
2507    o change MNC call locations and add coordinate attributes
2508    o mask vorticity at the corner ; affects global_ocean.cs output
2509    o fix ini_curvilinear_grid ; test CS experiments with mpi
2510    o aim.5l_cs: modify sea-ice fraction input file ; update output
2511    o exf: Adding simple range check routine for exf fields after read
2512    
2513    checkpoint52k_post
2514    o removed top-level directory "diags"
2515      - we migrated these functions to pkg/timeave a long time ago
2516    o fixed bug introduced in pkg/monitor
2517    o accuracy ctrlprec = 32 insuffient for gradient checks using
2518      averaged fields (I/O via cost_averages)
2519      -> use ctrl.h in active_file*.F to control I/O precision.
2520    o paramter list of CALL ADTHE_MAIN_LOOP
2521    o added initial do_the_model_io to ecco
2522    o set all ...Freq to zero after cost_final
2523      taveFreq, dumpFreq, pChkptFreq
2524    o MAIN and ECCO differentiability restored
2525    
2526    checkpoint52j_post
2527    o fix nchklev in tamc.h for global_ocean...
2528    o Bringing flow and store directives up-to-date
2529    o Really weird thing!
2530      call do_the_model_io from the_main_loop with parameters
2531      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2532      TAF places a faulty re-call of initialise_varia
2533      after cost_final call which should not be there!
2534    checkpoint52j_pre
2535    
2536    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2537      error messages
2538    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2539    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2540      debug output
2541    o modfied mdsio_writefield.F to handle non-global files under exch2
2542    o update AIM Cubed-Sphere exp (aim.5l_cs):
2543      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2544    o update AIM Equatorial Channel exp:
2545      use standard aim_v23 pkg and change the SST fields to be more realistic.
2546    o globalFile now works with exch2
2547    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2548      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2549    o limit timeave output for hi-res integrations
2550    
2551    checkpoint52i_post
2552    o removed CPP_EEOPTIONS.h from verification/*/code
2553    o updated the tiling for global_ocean_pressure
2554    checkpoint52i_pre
2555    
2556    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2557      the old pkg/aim).
2558    
2559    checkpoint52h_pre
2560    o shortened offending lines in exch2_send_rx?.template
2561    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2562    o genmake2: add build & execute test for NetCDF code
2563    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2564      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2565    o added useSingleCPUIO flag to monitor.F and mon_out.F
2566    o added temporary hack for sea-ice dynamics on the cube:
2567      metric terms are ignored and it is assumed that
2568      there is no sea-ice on cube faces 1, 2, 4, and 5.
2569    
2570    checkpoint52f_post
2571    o added exch2 cube routines to pkg/exch2
2572    o modified hs94.cs-32x32x5 to use it
2573    o added new grid files to hs94.cs-32x32x5
2574    checkpoint52f_pre
2575    
2576    checkpoint52e_post
2577    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2578      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2579    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2580      to work with implicit vertical advection and AB ;
2581    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2582    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2583     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2584    checkpoint52e_pre
2585    
2586    o fix bug in impldiff when Nr=1 or Nr=2.
2587    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2588    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2589    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2590      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2591    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2592    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2593    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2594    
2595    checkpoint52d_post
2596    o re-tiled many expts to allow comparison in multi-processor mode
2597      - updated output accordingly
2598      - changed hs94.128x64x5 to use intial T from file rather than use the
2599        random number generator
2600    o add infrastructure in model routines for fizhi and gridalt packages
2601    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2602    o changes to permit hi-res, cubed-sphere, configuration
2603      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2604      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2605      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2606        of surface winds for the cube
2607      (A verification experiment, based on global_ocean.cs32x15, but with
2608       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2609       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2610       complete with example surface forcing files and matlab scripts to look
2611       at the output and compare it with that of global_ocean.cs32x15.)
2612    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2613       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2614       to conform to the common rule.
2615    o check-in the first version of the coupler + interfaces for multi-components
2616       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2617       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2618       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2619       - ocean and atmos. share the same horizontal grid (no interpolation).
2620       - exchanges between component and coupler is done in forward_step
2621    o new verification experiment, cpl_aim+ocn:
2622       coupled ocean - AIM atmosphere on cs32 grid.
2623    
2624    checkpoint52d_pre
2625    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2626    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2627    
2628    checkpoint52c_post
2629    o Fixing OPTIONS files for use of exf:
2630      - ALLOW_ECCO not needed
2631      - ECCO_CPPOPTIONS.h should not be included from
2632        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2633        as has been the case in the past
2634      - All cal/exf related options are currently set in
2635        single header file. Should remain so until we
2636        agree on a consistent new policy.
2637    o Removed all CPP options for cal package.
2638      cal has no more CPP options.
2639    o modified STOREs in GAD_ADVECTION
2640    o corrected key comp. for passkey
2641    
2642    checkpoint52b_post
2643    o new version: "thsice" of thermodynamic sea-ice pkg:
2644     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2645     - modify fluxes but do not change theta directly;
2646     - light cleaning of bulk_force pkg (still needed with thsice).
2647     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2648       + output_thsice.txt to test thsice & bulk_force pkgs.
2649    o put back grid & coriolis monitor output.
2650    checkpoint52b_pre
2651    
2652    o call "do_the_model_io" at the beginning (=> dump initial state)
2653    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2654    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2655      (need info on NUMBER_OF_PTRACERS)
2656    o missing PTRACERS headers in some routines
2657    o default tamc.h in pkg/autodiff supposed to crash
2658      to ensure proper customization
2659    
2660    checkpoint52a_post
2661    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2662      - moved surfaceTendencyTice from pkg/seaice to main code
2663      - subroutine FREEZE_SURFACE now limits only surface temperature
2664        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2665        => new output.txt for global_ocean.cs32x15 & global_with_exf
2666      - keep the old version of FREEZE for backward compatibility;
2667        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2668      - corresponding modifs for TAF directives
2669    o added surface flux output variables to TIMEAVE_STATVARS
2670    o time-averaged output for pkg/ptracers
2671    o fix problem with ECCO-related divided adjoint
2672      snapshot file was missing some ad-variables,
2673      but no warning issued by TAF
2674    
2675    checkpoint52a_pre
2676    o some bug fixes for #undef REAL4_IS_SLOW
2677    
2678    checkpoint52 = ecco_c52_e35
2679    o after testing adjoints of checkpoint51u_post
2680    
2681    checkpoint51u_post
2682    o this is the post-merge tag of the ecco-branch
2683      (needs another clean checkout and re-testing)
2684    o various natl_box_adjoint configs and results
2685      but no input fields
2686    o obcs adjoint not yet merged!
2687    o adding ECCO global 1x1 and 2x2 degree configs
2688    o updated/extended some store directives for seaice
2689    o pkg/ecco now containes ecco-specific part of cost function
2690    o top level routines the_main_loop, forward_step
2691      supersede those in model/src/
2692      previous input data.cost now in data.ecco
2693      (new namelist ecco_cost_nml)
2694    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2695    
2696    checkpoint51t_post
2697    o this is the pre-merge tag of the ecco-branch
2698    
2699    checkpoint51s_post
2700    o cleanup: removed various obsolete #define-s
2701    o pkg/grdchk
2702      - renamed 'ph-grd 3' to 'grad-res'
2703      - merged from ecco-branch
2704        (remaining bug fixes for obcs gradient checks)
2705      - additional high-precision output for testreport
2706        (grep for 'precision_grdchk_result')
2707    
2708    checkpoint51r_post
2709    o cleaned up or removed CPP_OPTIONS.h files
2710    o updated results for some of the tests to reflect the new
2711      optfiles (-ieee: -O0 instead of -O3)
2712    
2713    checkpoint51q_post
2714    o cd_code:
2715      - moved cd_scheme.F -> cd_code_scheme.F
2716      - separate read_checkpoint from cd_code_ini_vars.F
2717      - separated cd_code part from write_checkpoint
2718      - updated AD_SOURCE, generated .flow
2719      - added CD_CODE_VARS.h to the_main_loop
2720      - Moving cd_code specific store dir.s to pkg/cd_code
2721    o ctrl package totally restructured
2722      - pack/unpack now optional and decoupled from
2723        xx_/adxx_ I/O
2724      - ctrl_pack/unpack cleaned
2725        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2726      - confined inclusion of AD_CONFIG.h to where necessary.
2727    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2728    
2729    checkpoint51p_post
2730    o create initial cd_code package
2731      - WARNING: the initialization of fields within packages
2732        is broken because INI_FIELDS (where READ_CHECKPOINT is
2733        called) is called *before* PACKAGES_INIT_VARIABLES.
2734        This seems to be backwards since
2735        1) its important to initially zero the entire field including
2736           the "halo" region
2737        2) zeroing needs to be done *before* reading pickup info
2738           and the pickup call might or might not happen in any
2739           particular run
2740      - this needs an overhaul for R2
2741    o cleanup verification/*/code/GMREDI_OPTIONS.h
2742    o cleanup testreport
2743    
2744    checkpoint51o_post
2745    o bringing AD-related verif's up to date with genmake2
2746      - carbon/
2747      - global_ocean.90x40x15/
2748      - hs.94.1x64x5/
2749      - (front_relax/ )
2750    o (more) consistent directory structure for AD-related verif.'s
2751    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2752    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2753    o bug fix in find_alpha.F for MDJWF:
2754      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2755        change rho -> rho-rhoConst
2756      - replace call find_rho to find_rhonum
2757    o initialisation of rFlx extended to full array (required by TAF)
2758      and shifted to thermodynamics
2759    o removed PTRACERS.h in ptracers routine
2760    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2761    o Correcting initialisations for fVerU, fVerV.
2762    o helping TAF to recognize dependency on kUp for
2763      fVerU, fVerV
2764    o Replacing delZ by delR in pkg/ctrl/
2765    checkpoint51o_pre
2766    
2767    o undid all of cp51 pending some cleanups and discussion
2768    o added the [#include "AD_CONFIG.h"] statement to all files that need
2769       it for adjoint/tl #defines
2770     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2771     o removed tools/genmake since it no longer works
2772    
2773    checkpoint51n_post
2774    o modifications to make FREEZE flux visible to pkg/kpp
2775      - moved surfaceTendencyTice from pkg/seaice to main code
2776      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2777      - subroutine FREEZE now limits only surface temperature
2778        (this means new output.txt for global_ocean.90x40x15,
2779         global_ocean.cs32x15, and global_with_exf)
2780    o added surface flux output variables to TIMEAVE_STATVARS
2781    
2782    checkpoint51n_pre
2783    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2784    o added [#include "AD_CONFIG.h"] to all files that use the following
2785      defines:
2786      - ALLOW_ADJOINT_RUN
2787      - ALLOW_TANGENTLINEAR_RUN
2788      - ALLOW_ECCO_OPTIMIZATION
2789    
2790    checkpoint51m_post
2791    o incorporating changes to get TAMC/TAF working in genmake2
2792      - added new TAMC/TAF targets to the Makefile
2793      - various cleanups related to package handling
2794      - these changes should have no impact on the forward model
2795    
2796    checkpoint51l_post
2797    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2798     - faster algorithm for cal_addtime.F
2799     - higher precision arithmetic, where needed
2800     - pkg/exf *startdate variables changed from calendar date to
2801       model integration time
2802    
2803    checkpoint51l_pre
2804    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2805    o enable to apply restoring on S & T only in a latitude band.
2806    o update output (external_forcing_surf modif. change truncation errors)
2807       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2808    
2809    checkpoint51k_post
2810    o change default to: useNHMTerms=.FALSE.
2811     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2812       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2813     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2814        exp1, ideal_2D_oce
2815     - change data file of oceanic exp (leave the results unchanged for now)
2816       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2817    o set gravitySign automatically according to the vertical coordinate used
2818      (and change sign: back to "logical" value: +1 when R increases downward)
2819    o added an include barrier to the default CPP_OPTIONS.h and
2820      removed the #include "PACKAGES_CONFIG.h" from it
2821    o fix a bug in mom_fluxform (from chk51j_post)
2822    
2823    checkpoint51j_post
2824    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2825    o adjusted some flow directives (dynamics, thermodynamics)
2826    o added cubed-sphere case to test cost function
2827    o heckpoint_lev?_directives.h now include
2828      pkg-specific directives, whenever those are enabled.
2829    o Moving pkg-specific flow directives to corresponding pkg
2830      Moving pkg-specific differentiation list to corresponding pkg
2831      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2832      ---> conventions are
2833           - pkg_ad.flow
2834           - pkg_ad_diff.list
2835           - pkg_ad_check_lev?_dir.h
2836    
2837    checkpoint51i_post
2838    o merge of the branch-genmake2
2839      - knowingly breaks the older genmake
2840      - automatic generation of all ALLOW_${PKG_NAME} defines
2841      - new testreport supersedes older testscript
2842    o large number of package inclusion and header cleanups
2843    checkpoint51i_pre
2844    
2845    o new output for adjoin of global ocean vector invariant
2846    o fix for checkpoint of thermodynamic seaice and bulk_force
2847    o Steph gchem various cleanups
2848    
2849    checkpoint 51h_pre
2850    o fixed some single quotes
2851    o modify gchem pkg to be more versatile
2852    o modifications to clean up dic pkg
2853    o add pkg/cfc
2854    
2855    checkpoint51g_post
2856    o provide links for ARPACK and ADM*TLM
2857    o start removing verification/vero/
2858    o update AD-related stuff
2859      (in particular some IF-statements in model/src/ routines)
2860    o adding to verification/global_ocean.90x40x15/ adjoint of
2861      vector invariant setup
2862    
2863    checkpoint51f_post
2864    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2865    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2866      of tracer Green's fucntions for ocean inversion project.
2867    
2868    checkpoint51f_pre
2869    o Added on-the-fly spatial interpolation capability
2870        "USE_EXF_INTERPOLATION" to pkg/exf.
2871      - This is a temporary Cartesian-grid hack until
2872        the super-duper ESMF coupler becomes available.
2873      - See verification/global_with_exf/README for usage example.
2874      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2875        flags and modified pkg/seaice accordingly.
2876    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2877        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2878        non-local transport term.
2879    
2880    checkpoint51e_post
2881    o pkg/mom_vecinv:
2882      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2883      - add time-ave diagnostic of vorticity advection.
2884    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2885    o atmospheric geopotential: - include water vapor effect;
2886                                - use p^kappa in p* scaling.
2887    o land pkg: read initial state from files.
2888    o AIM : add stratospheric drag in the upper level
2889    
2890    checkpoint51d_post
2891    o change function ILNBLNK (=> last non-blank char.) to return zero
2892      (instead of the string length) when the string. char is empty
2893    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2894    o modif's to restore TAMC compatibility
2895      - avoid "_d" constructs in PARAMETER declarations
2896      - avoid interrupting lines by comment lines
2897    o Use cluster local disks for purely local I/O
2898      vs. globally visible disks needed for ctrl stuff
2899      (merged from ecco-branch)
2900      - new active_file_loc... and mdsio_..._loc routines
2901      - affected packages: autodiff, ctrl, grdchk, mdsio
2902    
2903    checkpoint51c_post
2904    o introducing integer flag debugLevel
2905      - debLevZero: suppress all output
2906      - debLevA: standard
2907      - debLevB: equivalent to current debugMode=.TRUE.
2908    o introducing pathname variable mdsioLocalDir for mdsio
2909      that can be specified at runtime
2910      (relevant for cluster I/O to local disk)
2911    `
2912    >>>checkpoint51b_post
2913    adjoint of ptracers
2914    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2915    o extended state in checkpoint_lev?, etc.
2916    o alternative ctrl/cost with tr1 or ptracer
2917    o new comlev1_bibj_ptracers
2918    o new ptracers.flow
2919    o made ptracers_forcing same as external_forcing_s
2920    o added verification for adjoint with ptracers
2921      - adm. grdchk fail so far
2922      - tlm. grdchk OK
2923      - checked tapelev/comlev recomputations: OK
2924    <<<checkpoint51b_pre
2925    
2926    checkpoint51a_post
2927    o added code for biogeochemistry package
2928      - new pkgs: dic, gchem
2929      - new subroutine in ptracers
2930    o modify code for biogeo packages
2931      - in model/src and pkg/ptracers
2932    
2933    checkpoint51
2934    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2935      - autodiff, ctrl, exf, grdchk, seaice
2936      kept separate packages
2937      - cost, ecco, obcs
2938    o updating verification/internal_wave, verification/lab_sea
2939      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2940    
2941    checkpoint50i_post
2942    o Preparing next differentiable checkpoint and sync
2943      of MAIN vs. ecco-branch
2944      - 1st step: this one is differentiable
2945      - 2nd step: next(! not this) checkpoint will have updated packages
2946                  from ecco-branch)
2947    
2948    checkpoint50h_post
2949    o new package "land": provide surface BC for AIM.
2950    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2951    o AIM: use true log-P extrapolation for near surface temp (= as in
2952        F.Molteni paper) ; update aim.5l_cs output.
2953    o New variable in PARM03 for more flexible pickups
2954    o somewhat cleaned package initialisation sequence for
2955      ctrl/ cost/ ecco/ in packages_... routines
2956    
2957    checkpoint50g_post
2958    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2959      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2960      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2961        made the default because of faster convergence than ADI
2962    
2963    checkpoint50f_post
2964    o exf totally restructured
2965      - replaced all exf_set_ routines by one generic exf_set_gen.F
2966        and made sure it's still differentiable
2967      - split exf_getffields.F into new exf_bulkformulae.F
2968      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2969      - updated adjoint/makefile and relevant verif. accordingly
2970    
2971    checkpoint50f_pre
2972     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2973          + change Evap over land. (update aim.5l_cs output)
2974     o added missing .cvsignores and made uniform across expts
2975     o changed configuration of tidal_basin_2d expt
2976     o added pkg/debug functions for tracing code in fatal crashes
2977     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2978     o new fn in pkg/monitor to stop model if solution grows too big
2979     o removed lots of single quotes from comments
2980    
2981    checkpoint50e_post
2982    o make KPP work with PTRACERS
2983     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2984       nearly a copy of kpp_transport_s
2985     - there is no analogue to SurfaceTendencyS, so I have to use
2986       gPtr(of the surface layer) instead
2987    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2988    checkpoint50e_pre
2989    
2990    checkpoint50d_post
2991    o change kpp output from multiple-record state files to single-record state
2992      files analogous to write_state.F
2993    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2994      analogous to the cg2d-related output.
2995    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2996      so that writing to internal file fn (with length 512) fails.
2997    checkpoint50d_pre
2998    
2999    checkpoint50c_post
3000    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
3001    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
3002    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
3003    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
3004    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
3005    
3006    checkpoint50c_pre
3007    Merging from release1_p13:
3008    o bug fix for pkg/seaice dynamic solver
3009    o Added SEAICE_initialHEFF to pkg/seaice
3010    
3011    checkpoint50b_post
3012    o store u*,v* in gU,V instead of in guNm1,gvNm1
3013    o in order to put the momForcing out of the Adams-Bashforth:
3014      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
3015      to timestep.F
3016    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
3017    o re-generate output for highly sensitive test-exp:
3018       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
3019    
3020    checkpoint50b_pre
3021    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
3022    o corrected CPP option mismatch in exf_Bulk... functions for case
3023      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
3024    
3025    checkpoint50a_post
3026    o Bug fix for merging between c50 and KPP.
3027      ikey was passed from thermodynamics to kpp_calc via
3028      common block rather than being recomputed in kpp_calc,
3029      in contradiction with new key itdkey.
3030      New key ikppkey created, and tamc.h headers updated.
3031    
3032    checkpoint50
3033    - 2nd step of merge with ecco-branch:
3034      merge changes in ecco-branch back into main trunk
3035    - bug fix in find_alpha
3036    - more storing in gmredi_calc_tensor.F, kpp_routines.F
3037    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
3038    - merged some sliced AD support routines
3039    
3040    checkpoint49
3041    merged from ecco-branch:
3042    o exf:
3043      - Enable initialisation of forcing fields to constant
3044        (runtime) values.
3045      - in exf_getffields.F
3046        Reduce i-/j-loop to interior domain, discarding overlaps.
3047        That also fixes wrong TAF-key computations for key_1, key_2
3048        with bulf formulae.
3049      - exf_init.F modify #ifdef for exf_init_evap
3050      - exf_getffieldrec.F, ctrl_getrec.F
3051        The following INT-usages are not safe:
3052          fldsecs  = int(fldsecs/fldperiod)*fldperiod
3053          fldcount = int(fldsecs/fldperiod) + 1
3054        and were modified.
3055    o autodiff: checkpoint_lev...
3056      - updated storing for bulk formulae (some arrays were missing)
3057      - added state for seaice package
3058      - synchronized with main branch
3059    o DIVA:
3060      Modif.s in
3061      - the_main_loop.F
3062      - the_model_main.F
3063      and added cost_final_restore.F cost_final_store.F
3064      o With these changes, it is possible to fully separate
3065        the first forward run to compute the cost function (mdthe_main_loop)
3066        and adjoint runs over individual DIVA intervals (adthe_main_loop)
3067        into separate model executions.
3068        This enables better tuning of DIVA to given queue sizes.
3069      o Loss of cost function value in consecutive DIVA runs is
3070        fixed by storing to 'costfinal' file.
3071      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
3072        beginning/end of adjoint integration is accounted for.
3073      The current changes apply to TAF-1.4.26.
3074      TAF has one remaining bug, requiring one manual change
3075      (see MITgcm manual).
3076    o cal: synchronized between MAIN and ecco-branch
3077    
3078    checkpoint48i_post
3079    o Changes to restore differentiability of code w.r.t. previous tag
3080      (mostly adding new routines to make list and replacing
3081      pressure by totPhiHyd).
3082    o Updated and merged grdchk package
3083      - has both ADM and TLM checks
3084      - works for single- and multi-proc.
3085      - output cleaned
3086      - worked successfully for parallel DIVA
3087    o genmake:
3088      - Adding -platform=SP4
3089      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
3090    o Modif. for DIVA:
3091      ctrl_unpack should not be called in intermediate DIVA interval.
3092      (similar thing would apply for active files such as
3093      tbar, sbar, psbar, which should not be reinitialised;
3094      only relevant for ecco-branch)
3095    
3096    checkpoint48h_post
3097    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
3098    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
3099    o Added SEAICE_initialHEFF to pkg/seaice
3100    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
3101    
3102    checkpoint48g_post
3103    --- EOS:
3104    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
3105      store total Potential in totPhyHyd for diagnostics & EOS.
3106    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
3107    --- Pressure/geopotential gradient:
3108    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
3109    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
3110      ( changes results of global_ocean_pressure )
3111    o NLFS + z-coord.: add eta*Rho' contribution.
3112    o accurate phiHyd when using interface-W at the middle between 2 centers
3113     ( changes results of ideal_2D_oce )
3114    o includes r* 2nd term in potential gradient.
3115    
3116    checkpoint48f_post
3117    Merging from release1_p12:
3118    o Modifications for using pkg/exf with pkg/seaice
3119      - improved description of the various forcing configurations
3120      - added basic radiation bulk formulae to pkg/exf
3121      - units/sign fix for evap computation in exf_getffields.F
3122      - updated verification/global_with_exf/results/output.txt
3123    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
3124      (SBO) core products, including oceanic mass, center-of-mass,
3125      angular, and bottom pressure (see pkg/sbo/README.sbo).
3126    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
3127      to avoid negative values in shallow regions.
3128      - updated verification/natl_box/results/output.txt
3129      - updated verification/lab_sea/results/output.txt
3130    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
3131    o Added useSingleCpuIO option (see PARAMS.h).
3132    o Updated useSingleCpuIO option in mdsio_writefield.F to
3133      work with multi-field files, e.g., for single-file pickup.
3134    o pkg/seaice:
3135      - bug fix in growth.F: QNET for no shortwave case
3136      - added HeffFile for specifying initial sea-ice thickness
3137      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
3138    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
3139      kpp_transport_t.F, forward_step.F, and the_main_loop.F
3140    o pkg/seaice:
3141      - adjoint-friendly modifications
3142      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
3143    
3144    checkpoint48e_post
3145    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
3146    o dynamics: change definition of computational domain & adapt mom_fluxform
3147      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
3148    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
3149        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
3150        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
3151        global_ocean.90x40x15 global_with_exf global_ocean_pressure
3152        inverted_barometer solid-body.cs-32x32x1
3153      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
3154    
3155    checkpoint48d_post
3156    o in preparation for r*:
3157     a) use pre-computed gradient of hydrostatic potential:
3158        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
3159     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
3160        => affects results of glob_oce_pressure (different truncation error)  
3161      update output.txt of ideal_2D_oce & global_ocean_pressure
3162    
3163    checkpoint48d_pre
3164    o in preparation for r*:
3165      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
3166      pass the 2 comp. of the grad. as arguments to momentum S/R.
3167      but for the moment, only used if it does not change the results.
3168    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
3169    
3170    checkpoint48c_post
3171    Modifications in treatment of initial flux forcing controls
3172    to avoid extra storing of flux fields.
3173    
3174    checkpoint48c_pre
3175    o Added tidal_basin_2d experiment (currently 1D!)
3176    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3177    
3178    checkpoint48b_post
3179    o r* coordinate added in #ifdef NONLIN_FRSURF block.
3180     (modification to pressure gradient not yet implemented)
3181    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
3182      (for U & V) that are used for vertical advection of momentum.
3183    
3184    checkpoint48a_post
3185    o In preparation for r*, use temp. array to compute vertical transport
3186       in flux-form momentum pkg. => change results of few test-exp.
3187      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
3188                        lab_sea, natl_box & plume_on_slope
3189    
3190    checkpoint48
3191    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
3192    
3193    checkpoint47j_post
3194    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
3195    o moved adexch from forward_step to addummy_in_stepping
3196    o added exch in ctrl_map_...
3197    o aveFreq.=0. at end of cost_final to avoid overwrite in
3198      reverse checkpointing loop
3199    o Yet more changes in gmredi:
3200      * adgmredi_calc_tensor
3201        avoiding all recomputation of gmredi_slope_limit
3202      * adgmredi_x/y/rtransport
3203        added flag for excessive storing to avoid recomp. of
3204        u/v/rtans, dTdx/y/z
3205        -> this is not really necessary and very memory-consuming
3206      * adgmredi_slope_psi:
3207        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
3208      * gmredi_slope_limit
3209        re-activated full calculation of taperfct for case 'ac02'
3210    o updating verification/ adjoints of carbon, global_ocean.90x40x15
3211    
3212    checkpoint47i_post
3213    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
3214    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
3215      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
3216    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
3217    o gmredi: fix few bugs.
3218    
3219    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
3220    This will be a good checkpoint to plug into the ecco-branch.
3221    o few modif.'s to get latest version adjointed
3222      (mainly kick out code in ini_linear_phisurf)
3223    o modif's to run adjoint with exactConserv
3224    o case GM_BOLUS_ADVEC should be cleaned
3225      S/R gmredi_slope_psi should be cleaned
3226    o verification/carbon now has exactConserv=.TRUE.
3227    
3228    checkpoint47g_post
3229    o time-average AIM output: becomes independent from statvars time-average
3230      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
3231    o After TAF bug fix:
3232      Tested adjoint of gmredi package.
3233      Tests were done with checkpoint47 rather than with latest
3234      checkpoint47f_post since the latter is broken for the adjoint
3235      verification/carbon/ contains both ADM and TLM gradient checks.
3236    Here they are, before they get changed/lost/stolen.
3237    Mostly modif.'s to fix numerical sensitivities.
3238    Gradient checks OK for
3239    - GM_taper_scheme:
3240      * clipping
3241      * ac02
3242      * linear
3243      * glw91
3244      * dm95
3245      * ldd97
3246    - GMREDI_OPTIONS:
3247      * GM_VISBECK_VARIABLE_K
3248      * GM_NON_UNITY_DIAGONAL
3249      * GM_EXTRA_DIAGONAL
3250      * GM_BOLUS_ADVEC
3251    in conjunction with data.gmredi parameters to be checked in
3252    in a few minutes under verification/carbon/code/
3253    
3254    checkpoint47f_post
3255    Merging from release1_p10:
3256    o modifications for using pkg/exf with pkg/seaice
3257      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
3258        and SEAICE_EXTERNAL_FLUXES
3259      - pkg/exf CPP options EXF_READ_EVAP and
3260        EXF_NO_BULK_COMPUTATIONS
3261      - usage examples are Experiments 8 and 9 in
3262        verification/lab_sea/README
3263      - verification/lab_sea default experiment now uses
3264        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
3265    
3266    checkpoint47e_post
3267    o created a tag prior to creating a branch
3268    
3269    checkpoint47d_post
3270    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
3271      at the bottom boundary had an erroneous half slip boundary condition
3272    o added bottom drag and no slip boundary condition capabilities to
3273      oceanic pressure coordinates code
3274    o added new verification experiment global_ocean_pressure, this experiment is
3275      also described in the tutorial section of the manual
3276    checkpoint47d_pre
3277    
3278    checkpoint47c_post
3279    o Added a verification experiment for a global cubed-sphere ocean run
3280      -  verification/global_ocean.cubed32x32x30
3281      -  uses pkg/therm_seaice and pkg/bulk_forcing
3282    
3283    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
3284    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
3285      when using P-coordinate; only implemented for atmospheric config.
3286    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
3287      NOTES: requires option NONLIN_FRSURF to be "#define".
3288    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3289    
3290    checkpoint47b_post
3291    Merging from release1_p9:
3292    o pkg/seaice
3293      - removed GOTO's and added taf directives
3294      - double precision constants to reduce the g77 (Linux)
3295        to F77 (SGI) differences reported in release1_p8
3296    o tools/genmake
3297      - added SGI options
3298    o verification/testscript
3299      - updated to that of checkpoint47a_post
3300    o verification/global_ocean.90x40x15/input/eedata
3301      - modified for SGI f77 compatibility
3302    o verification/lab_sea
3303      - added description of sea-ice model
3304      - added missing matlab routines
3305      - added test of thermodynamics parallelization
3306    
3307    checkpoint47a_post
3308    o new pkg: aim_v23
3309     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3310       for now, keep the same surface forcing as before.
3311     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3312     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3313     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3314    o add diagnostic of surface correction term in monitor output
3315    
3316    o bulk_force and therm_seaice
3317    - Two packages:  bulk_force (Bulk forcing)
3318      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3319    - Earlier integration from Stephaine Dutkiewicz
3320      and Patrick Heimbach.
3321    - Two ifdef statements for compile time,
3322       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3323    
3324    checkpoint47
3325    differentiable version of checkpoint46n_post
3326    o bug fix in quasihydrostaticterms
3327    o * "clean" adjoint code (in terms of extensive recomputations)
3328        can now be obtained for all GMREDI options (i.e. for
3329        - GM_VISBECK_VARIABLE_K
3330        - GM_NON_UNITY_DIAGONAL
3331        - GM_EXTRA_DIAGONAL
3332        - GM_BOLUS_ADVEC )
3333      * However, wrong gradient check problem remains unsolved.
3334      * New CPP options have been introduced for different
3335        tapering schemes
3336    o external_fields_load now part of differentiation list
3337    o pressure needs multiple storing;
3338      would be nice to have store_pressure at beginning or
3339      end of forward_step, e.g. by having phiHyd global (5-dim.)
3340      (NB: pressure is needed for certain cases in find_rho,
3341      which is also invoked through convective_adjustment).
3342    o recomputations in find_rho for cases
3343     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3344    o #define ATMOSPHERIC_LOADING should be differentiable
3345    o ini_forcing shifted to begining of initialise_varia
3346    o Incorporating QNVS line search routines into MITgcm
3347      (this is separate code, and therefore not under pkg)
3348      lsopt/, optim/
3349    o Updated verification/carbon/
3350      - #define GM_VISBECK_VARIABLE_K
3351      - GM_taper_scheme    = 'ldd97'    
3352    
3353    checkpoint46n_post
3354    Merging from release1_p8:
3355    o verification/natl_box:
3356      updating new external_fields_load routine
3357    o New package: pkg/seaice
3358      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3359      The sea-ice code is based on Hibler (1979-1980).
3360      Two sea-ice dynamic solvers, ADI and LSR, are included.
3361      In addition to computing prognostic sea-ice variables and diagnosing
3362      the forcing/external data fields that drive the ocean model,
3363      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3364      The implied surface heat flux is then stored in variable
3365      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3366      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3367      non-local transport term.  Because this call precedes model
3368      thermodynamics, temperature under sea-ice may not be "exactly" at
3369      the freezing point by the time theta is dumped or time-averaged.
3370      N.B.: fairly large differences in accuracy occur across
3371            different platforms/compilers; comparison between
3372            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3373            generated output gives:
3374       T           S           U           V
3375      C D M    c        m  s        m  s        m  s        m  s
3376      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3377      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3378      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3379    
3380      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3381    o GAD:
3382      - generated new common blocks to account for call of
3383        same gad routines with differing traceridentities
3384        (needed to modify tracerIdentity indices in GAD.h)
3385      - generated separate common blocks for case useCubedSphereExchange
3386        (Department of Futurology)
3387      - parameter lists to gmredi_?transport: added tracerIdentity
3388      - added new key indices to tamc.h
3389    o external_fields_load:
3390      - added this routine to TAF list
3391      - needed to make some common blocks global and additional storing
3392        along the same lines as exf package (checkpoint_lev?_directives.h)
3393    o exf:
3394      updated external forcing package
3395      - bug fixes carried over from ecco-branch
3396        (missing OBCS_OPTIONS.h in two routines)
3397      - enable easy to use "no forcing".
3398      - added exf I/O for atmospheric loading
3399      - added exf I/O for runoff data
3400      - transfered scaling between exf <-> MITgcm to exf namelist
3401    o Adding new verification experiment global_with_exf.
3402      This verification experiment is almost identical to the
3403      global_ocean.90x40x15 experiment, except that it uses
3404      the exf (and cal) package instead of the
3405      external_fields_load routine (cf README file).
3406    
3407    checkpoint46m_post
3408    o modified testscript to return -- when there are no lines of "%MON" output
3409    o added new flag "quasiHydrostatic" for QH mode
3410      and new routine quasihydrostaticterms()
3411    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3412      New routine: mom_u_coriolis_nh()
3413    o fixed sign of non-hydrostatic metric terms in u and v equations.
3414      Depend on correct sign of gravitySign.
3415    o added work.pc* to .cvsignore in aim directories using ifc
3416    o introduced flag for controllin non-hydrostatic metric terms
3417    o removed gravitySign from PARM04
3418    o switched to g77/ifc from pgf77 in aim experiments
3419    
3420    checkpoint46l_post
3421    o made convective adjustment work with pressure coordinates:
3422     - changed the direction of k-loop in convective_adjustment.F for the
3423       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3424     - adjusted the reference pressure k-index in convective_adjustment.F
3425     - adjusted the convection condition in convect.F (in analogy to
3426       calc_ivdc.F)
3427     - convective_adjustment no longer computes anything on the halos
3428     - removed the warnings about negative salinity from find_rho.F and
3429       find_alpha.F; instead the new routine look_for_neg_salinity, called
3430       at the beginning of find_rho, find_alpha, and find_beta, does a
3431       check of the entire slice, if CPP-option
3432       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3433    checkpoint46l_pre
3434    
3435    checkpoint46k_post
3436    o fixed the verification/global_ocean.90x40x15 experiment:
3437     - new bathymetry (the world according to A., JMC, and M.)
3438     - new initial fields and forcing fields (*.bin files)
3439     - new POLY3.COEFFS (for the next release one should switch to a full
3440       equation of state: JMD95P or MDJWF)
3441     - fixed several errors and redundancies in the data file
3442     - experiment uses looped cells
3443     - added matlab directory with diagnostic scripts for plotting of output
3444    
3445    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3446     - read AIM physics parameters from a file (data.aimphys)
3447     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3448    
3449    checkpoint46j_post
3450    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3451    o move wVel computation at the end of the time step, in S/R integr_continuity
3452    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3453    o update timeave pkg for wVel diagnostic.
3454    checkpoint46j_pre
3455    
3456    checkpoint46i_post
3457    o Clean up AIM package (and keep the results unchanged):
3458      include CPP_OPTION and use IMPLICT NONE in all routines ;
3459      declare all the variables _RL ; use _d 0 for all numerical constants.
3460      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3461    
3462    checkpoint46h_post
3463    o cleaned up the use of rhoNil and rhoConst.
3464      - rhoNil should only appear in the LINEAR equation of state, everywhere
3465        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3466        and the dynamical equations are all divided by rhoConst
3467    o introduced new parameter rhoConstFresh, a reference density of fresh
3468      water, to remove the fresh water flux's dependence on rhoNil. The default
3469      value is 999.8 kg/m^3
3470    o cleanup up external_forcing.F and external_forcing_surf.F
3471      - can now be used by both OCEANIC and OCEANICP
3472    checkpoint46h_pre
3473    
3474     Added code to convert surface volume flux (fresh water) into
3475     a mass flux when using P coordinates in the ocean (OCEANICP).
3476     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3477    
3478    checkpoint46g_post
3479    o Include a new diagnostic variable phiHydLow for the ocean model
3480      - in z-coordinates, it is the bottom pressure anomaly
3481      - in p-coordinates, it is the sea surface elevation
3482      - in both cases, these variable have global drift, reflecting the mass
3483        drift in z-coordinates and the volume drift in p-coordinates
3484      - included time averaging for phiHydLow, be aware of the drift!
3485    o depth-dependent computation of Bo_surf for pressure coordinates
3486      in the ocean (buoyancyRelation='OCEANICP')
3487      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3488        Theta, Salinity, and Pressure in the parameter list. This routine is
3489        presently contained in find_rho.F. This routine does not give the
3490        correct density for 'POLY3', which would be a z-dependent reference
3491        density.
3492    o cleaned up find_rho
3493      - removed obsolete 'eqn' from the parameter list.
3494    o added two new verification experiments: gop and goz
3495      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3496    checkpoint46g_pre
3497    
3498    checkpoint46f_post
3499    o Enable tangent linear (forward mode) gradient checks:
3500      - extended active file handling to g_... files
3501      - added TANGENT_SIMULATION to theSimulationMode
3502      - extended grdchk package accordingly
3503    o added tangent linear setup in verification/carbon/code_ftl
3504    o added adjoint setup in verification/front_relax/code_ad
3505    
3506    checkpoint46e_post
3507    o Added new equation of state -> MDJWF
3508      - EOS of McDougall et al., 2002, JAOT, submitted
3509      - caveat: the equation of state is only valid for a smaller (more
3510        realistic?) range of values than JMD95P/Z and UNESCO
3511      - added masks to the calculation of pressure in store_pressure
3512      - added more check values for density in check_eos (ini_eos.F), some of
3513        the old check values are out of the range of the MDJWF-eos, so don't
3514        expect perfect matches for those
3515    checkpoint46e_pre
3516    
3517    checkpoint46d_post
3518    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3519      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3520      case of pressure coordinates. eosType='JMD95Z' in
3521      combination with buoyancyRelation='OCEANICP' now causes an error.
3522    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3523      in find_alpha/beta.
3524    checkpoint46d_pre
3525    
3526    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3527      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3528    
3529    checkpoint46c_post
3530    o Changes necessary for ocean in p-coordinates
3531     -  Added new buoyancy relation = 'OCEANICP'
3532     -  Added new parameters = gravitySign (this used to be contained inside
3533        the factor dRdZ which I added when we first switched to R coordinates).
3534     X GM/Redi is not compatible (yet)
3535     X bottom drag and no-slip need to be debugged.
3536    checkpoint46c_pre
3537    
3538    checkpoint46b_post
3539    o Added new equation of state -> JMD95Z and JMD95P
3540      - EOS of Jackett and McDougall, 1995, JAOT
3541      - moved all EOS parameters into EOS.h
3542      - new routines ini_eos.F, store_pressure.F
3543    o Added UNESCO EOS, but not recommended because it requires
3544      in-situ temperature (see JMD95)
3545    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3546      unesco.f to be used with POLY3
3547    checkpoint46b_pre
3548    
3549    checkpoint46a_post
3550    o Added (atmospheric) pressure loading
3551      - new field in FFIELDS.h, etc...
3552      - new cpp flag ATMOSPHERIC_LOADING
3553    o Changed hFacC to _hFacC in calc_phi_hyd.F
3554    o Added SHORTWAVE_HEATING to some files for consistency
3555    checkpoint46a_pre
3556    
3557    checkpoint46
3558    further merges from release1_p5
3559    o new ctrl package
3560      - adopted from ECCO environment to enable optimization
3561      - added Eliassen Palm fluxes to controls
3562    o added Eliassen Palm flux controls to gradient check package
3563    o cost package
3564      - Compatible with new ctrl package
3565      - added Eliassen Palm cost hooks
3566      - modif's of existing cost functions
3567    o Adjoint-related bug fixes in kpp:
3568      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3569      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3570    o autodiff package
3571      - flow directives:
3572        + new for S/R do_the_model_io
3573        + enhanced for S/R checkpoint
3574        + new gmredi.flow
3575      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3576        disable adcommon.h/g_common.h by default.
3577      - fixed problem for adjoint of global_max
3578    o modified verification/carbon/
3579    o New setup for adjoint of global_ocean
3580    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3581    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3582    o incorporated hooks for sponge layer code (external_forcing.F)
3583    
3584    checkpoint45d_post
3585    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3586    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3587      (affects plume_on_slope "cg2d" output)
3588    o add new parameter deltaTfreesurf for free-surface time stepping
3589    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3590  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3591  o change phiMin in exp1 (to agree with documentation)  o change phiMin in exp1 (to agree with documentation)
3592  o add new flags:  o add new flags:

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