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revision 1.38 by heimbach, Tue Apr 10 22:35:24 2001 UTC revision 1.1034 by mlosch, Sat Oct 25 20:49:22 2008 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
8      (#undef REAL4_IS_SLOW)
9     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
10       coordinate variable
11     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
12       (surface forcing fields), removes some of the functionality
13     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
14     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
15       probably not all: copy _RS surface flux fields to RL field before
16       calling DIAGNOSTICS_FILL
17    
18    checkpoint61e
19    o gmredi (Visbeck-variable-K):
20      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
21      - change computation of Visbeck-K where Slope > Smax :        
22        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
23        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
24    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
25      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
26    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
27    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
28      does not become too large (to avoid precision problems in implicit-diffusion
29      solver); update ideal_2D_oce output.
30    o pkg ggl90:
31      - in ggl90_cal.F: compute only one set of visc/diff, used to
32        step forward TKE/T/S/momentum
33      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
34        have Prandlt =1)
35    o gmredi (fm07):
36      - add lower limit on Transition layer thickness + lower limit on 1/lambda
37      - allow to set few more params from data.gmredi
38    o pkg ggl90:
39          - add missing sqrt(2) factor in computation of mixing length
40            scale in ggl90_calc.F
41            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
42    
43    checkpoint61d
44    o adjoint modifs
45      - adapt to new field rhoInSitu
46      - allow to revert from StoreDynVars2D, StoreDynVars3D
47        to individual fields
48        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
49    o store 3-D (in-situ) density in commom block (DYNVARS.h)
50     - save 1 rho computation.
51     - no longer modify T & S inland when using down_slope pkg.
52    o gad_som : allow to switch to SOM advection for T & S without corresponding
53      pickup files (using new S/R: MDS_CHECK4FILE).
54    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
55      (for useSingleCpuIO to work in multi-threaded)
56    o pkg/shelfice:
57     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
58       with SHELFICEtopoFile in data.shelfice
59     - move code for reading ice shelf topography and modifying hFacC into separate
60       subroutines of the shelfice package
61     - separate initialisation of "fixed" and "variable" variables
62     - kTopC is not (yet) replaced by kSurfC, although this is possible
63    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
64    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
65      and rename:
66      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
67      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
68    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
69    
70    checkpoint61c
71    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
72      to add mass source/sink of fluid in the interior (3-D generalisation
73      of oceanic real-fresh water flux).
74    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
75    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
76    o new pkg: down_slope
77      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
78      - presently, modify T & S inland (dwnslp_calc_rho.F).
79        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
80      - implementation for ocean in P-coords not tested.
81      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
82    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
83      (to facilitate conversion of oceanic pkg to p-coordinate).
84    o change FIND_RHO to FIND_RHO_2D :
85      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
86    o new pkg: cheapaml
87    
88    checkpoint61b
89    o exch2:
90      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
91      - no longer depend on the order sequence (N,S,E,W).
92      - 3rd exchange no longer needed (tested with 24 tiles).
93      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
94      - exch_UV_A-grid readily available (but not yet tested).
95      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
96      (both are no longer needed) in exch_uv: no effect in forward run; but
97       get truncation error differences with adjoint exch.
98    o exch2:
99     - change index-bounds storage (moved from target to local tile,
100       more intuitive this way) ; rename/remove some variables.
101     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
102    
103    checkpoint61a
104    o exch2/matlab-topology-generator:
105      fix bug in index bounds for N-S internal exchange (hard to tell if this
106      had any effect on the solution).
107    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
108      is exceeded
109    o testreport: modify syntax of awk, so that it works also with
110      awk, and not only with nawk and gawk
111    
112    checkpoint61
113    o autodiff
114      Change default for TAF usage by removing argument '-nonew_arg'
115      This changes TAF subroutine argument list (ordering of active var.)
116      Omission of this flag leads to incompatibility w.r.t. TAMC
117      To restore TAMC-compatibility, need following modifs:
118      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
119      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
120      Tested TAF version is 1.9.22
121      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
122    
123    checkpoint60
124    --->>> This is the last checkpoint for which generating the adjoint
125    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
126    --->>> by default.
127    --->>> Future checkpoints will ommit this flag by default.
128    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
129    o pkg/grdchk: Add gradient check to etan0 perturbations.
130    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
131    o pkg/autodiff: more flexibility in zeroadj.
132      model/src: modifying do_oceanic_phys.F accordingly.
133    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
134    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
135      special setup of gmredi for which the adjoint is stable
136      enough for parameter optimization.
137    o bridging the gap between eddy stress and GM.
138      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
139          along with a change in CPP option (now ALLOW_EDDYPSI).
140      -> when using GM w/ GM_AdvForm:
141          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
142          is applied either in the tracer Eq. or in momentum Eq.
143          depending on data.gmredi (intro. GM_InMomAsStress).
144      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
145      The key modifications are in model/src/taueddy_external_forcing.F
146      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
147    
148    checkpoint59r
149    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
150      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
151      fix option to read coriolis(@ cell-corner) from files with CS-grid.
152    o pkg/mnc: add some attributes to standard 1D-coordinate variables
153    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
154      mass points, when using mnc for output
155      - add runtime parameter (missing_value, missing_value_int) to override
156        default (which is the value of getcon('UNDEF'))
157    o pkg/mnc: prepare mnc for the actual use of missing values with the
158      diagnostics package: small fix in mnc_cw_readwrite.template and more
159      initialisation of never used fields
160      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
161      versions
162    o pkg/thsice/thsice_ini_vars.F added default initial values so that
163      thermodynamics sea ice solver does not blow up when some initial fields
164      are missing.
165    o move from external_forcing_surf.F to ini_forcing.F
166      the p-coord. hack consisting in using pLoad to set phi0surf ;
167      update output of tutorial_global_oce_in_p (affected @ truncation level).
168    o Freshen up a bit hs94.1x64x5, notably:
169      remove rotationPeriod and tRef=5*0. (adjoint only), and add
170      exactConserv=.TRUE.
171    o pkg/generic_advdiff:
172      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
173      applies to files where Temperature & Salinity 2nd Order moments are used.
174    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
175      this uses a dynamically allocated internal state data structure
176      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
177      and requires a fortran 90 compiler
178    
179    checkpoint59q
180    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
181       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
182    o Refresh tutorial_global_oce_biogeo, notably:
183      - change bathymetry (put back seamounts in ACC, use hFacs)
184      - change EOS (POLY3 --> JMD95Z)
185      - use Bryan-Lewis vertical diffusivity
186      - use multidimensional advection
187      - remove old virtual virtual in dic pkg, now done through ptracer pkg
188      - change a couple of parameters in dic pkg
189    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
190    o pkg/obcs: change default to OBCSfixTopo = .true.,
191      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
192      - replace "debugMode" with "debugLevel .GE. debLevB"
193    o implementation of TAF directives for gchem,cfc,dic
194    o remove "exp5" (replaced by tutorial_deep_convection).
195    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
196      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
197      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
198      --> changes results in exp4, seaice_obcs
199    o tutorial_deep_convection :
200      update the set-up and increase resolution and domain size ; start
201      from pseudo initial conditions = output at t=120mn in order to see
202      something happening when running testreport.
203    o pkg/seaice: add os7mp as an advection scheme
204                  add check for advection schemes
205                  add a flag for restoring T and S underneath sea ice
206    o pkg/my82: add netcdf-support and diagnostics
207    o thsice pkg:
208      - Now hsMax limits snow height by turning it into ice following
209        flooding scheme (and now conserving energy)
210      - Slight rewriting of the formula in thsice_calc_thick.F
211      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
212      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
213    
214    checkpoint59p
215    o gchem / dic / cfc :
216      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
217      - add new parameter files: "data.dic" & "data.cfc" ;
218      - various re-arrangement in initialisation & header file ;
219      - fix tutorial_global_oce_biogeo for multi-threaded test.
220    o pkg/dic: test for "pickup_dic" file when restarting ;
221      if no pickup-file, can restart with a re-initialised pH (same as it did
222      before) providing pickupStrictlyMatch is set to False.
223    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
224      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
225    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
226      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
227    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
228     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
229       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
230    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
231       scheme to use for vorticty-term ;
232     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
233       (with default selectVortScheme, return to original discretisation)
234     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
235    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
236    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
237      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
238      also fix diagnostics VISCAHW & VISCA4W.
239    
240    checkpoint59o
241    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
242    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
243      move a few statemens out the main loop into separate loops
244    o pkg/shelfice:
245      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
246        (kg/m^2/s), does not break tests, because in verification/isomip,
247        rhoConstFresh=rhoConst (by accident)
248      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
249      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
250        new file model/src/seawater.F, so that they are available for all pkgs.
251      - convert potential temperature into in-situ temperature. This changes the
252        isomip tests => update tests
253    o add a flag writePickupAtEnd (default=true) to be able to suppress
254      writing a pickup at the last timestep
255    o tools/mpack-1.6 :
256      - disable automake (not working) and autoconf (not needed).
257      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
258        also cleaner with much less compilation warnings.
259    o pkg/profiles:
260      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
261      (for "less than 32 characters name" compiler requirement)
262    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
263      conditions that have a different sampling frequency than S/T/U/V obcs
264    o pkg/diagnostics (stats-diags):
265      - fix global Min/Max in case 1 processor get only empty tiles
266    o genmake2: replace (4 times)
267         make genmake_tc_1.o >> genmake_warnings 2>&1
268      with
269         COMM="$CC $CFLAGS -c genmake_tc_1.c"
270         echo $COMM >> genmake_warnings
271         $COMM >> genmake_warnings 2>&1
272      to make genmake2 always see the value of CC as specified in the optfile.
273    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
274      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
275      - modify verification advect_cs test to test SOM-advection on CS-grid.
276    o pkg/ctrl:
277      - Rewrite of ctrl_map_ini_ecco.F,
278        introducing a generic routine (ctrl_map_ini_gen.F).
279      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
280    
281    checkpoint59n
282    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
283      number in dedicate array "hdiag":
284      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
285        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
286      - many small changes (integer format) for large number of diagnostics
287      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
288        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
289    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
290      usingSphericalGrid, this allows to define the rotated grid coordinates
291      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
292      geographical coordinates according to the inverse of the rotation defined
293      by the Euler angles, so that Coriolis parameter and online-interpolation by
294      exf works with the geographical coordinates on XC/YC/XG/YG.
295      Naturally, this feature does not work with all packages, so some
296      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
297      profiles), because there the coordinates are assumed to be regular
298      spherical grid coordinates.
299    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
300      - introduce isopycnal diffusion coefficient control.
301    o tools/adjoint_options:
302      - additional control vector components.
303    o pkg/mnc: have mnc create marginally meaning full coordinate variables
304      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
305    o pkg/mypackage:
306      - add example of read/write pickup for state-var ;
307      - add entry points to the main code for state-vars diags & write-pickup.
308    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
309      transitions for useExfYearlyFields
310      - add new subroutine that determines the file to read from for
311        use*YearlyFields = .TRUE. and .FALSE.
312      - add a verification experiment to global_with_exf that tests
313        useExfYearlyFields with USE_EXF_INTERPOLATION defined
314    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
315      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
316      subroutines (which could be generated from a template, because they are
317      almost identical), for now they are included in obcs_prescribe_read.F for
318      simplicity
319    o pkg/exf:
320      - add a little more diagnostic to exf_interp_read (in analogy to
321        mds_read_field, can be turned off with debugLevel < debugLevA=1)
322      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
323        ugly but fast by unrolling short inner loops, inserting a unroll=8
324        directive in routine lagran, and splitting a loop and making do while the
325        outermost loop (the latter requires the intoduction of index arrays)
326    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
327    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
328      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
329    o verification/seaice_obcs: updated for restart test and latest options
330    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
331      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
332      for now this is only available for the C-grid code and also within
333      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
334    
335    checkpoint59m
336    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
337      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
338    o gad_som : fix flux output (& diagnostics) to have same units as other  
339      advection scheme fluxes (was previously multiplied by deltaT).  
340    o added verification/seaice_obcs both to test seaice open boundaries
341      and to provide an example matlab scrpt for generating them
342    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
343    o pkg/salt_plume: clean up salt_plume_frac.F to
344      remove redundancy in PlumeMethod 1 and 4
345    o pkg/kpp: added saltplume diagnostics
346    o pkg/obcs and pkg/seaice:
347      - do not set uice and vice to zero when OB*icefile are unspecified
348      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
349      - moved seaice tracer obcs after call to seaice_growth
350    o pkg/salt_plume: added various options for salt plume depth
351      criterion and for vertical distribution of the salt
352    
353    checkpoint59l
354    o pkg/ptracers: new version of ptracers pickup:
355      read meta file and write only fields which are needed to restart.
356      ( same logic as main pickup file ; also using pickupStrictlyMatch )
357    o pkg/seaice:
358      - add timescale for melting due to warm mixed layer as a means of
359        setting SEAICE_availHeatFrac more conveniently
360      - add a CPP-flag/runtime parameter check for flooding algorithm
361      - reformulated availHeat in seaice_growth.F to be independent of AREA
362    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
363      unit changes
364    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
365    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
366      SX vector computer.
367    o pkg/seaice:
368      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
369        seaice forcing fields can now be read only through pkg/exf
370      - removed some unused halos
371    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
372    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
373      or U/VICE from U/VWIND before computing U/VSTRESS
374    
375    checkpoint59k
376    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
377      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
378    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
379      all experiments pass when compile with un-initialised var. checking option.
380    o added pkg/salt_plume
381    o script to test restart (for now, in MITgcm_contrib/jmc_script)
382    o pkg/seaice: new read/write pickup version.
383      read meta file and write only fields which are needed to restart.
384      ( same logic as main pickup file ; also using pickupStrictlyMatch )
385    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
386    o lab_sea.hb87: modify the domain & update output.hb87.txt :
387      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
388      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
389      process. Fixed here by closing the domain at the Northern boundary.
390    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
391    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
392      a set of consecutive levels in/from a 3-D array.
393    o pkg/ptracers:
394      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
395      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
396    
397    checkpoint59j
398    o in pkgs: dic, obcs, offline, rbcs:
399      standard way to compute coeff. for time interpolation between 2 time reccords
400      which retains full precision (& make results less dependent on compiler).
401      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
402    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
403      packages instead of reading ice cover and wind speed separately
404    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
405     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
406      to allow to compile customized code before the update)
407    o cleaning-up:
408      - fix CPP instruction syntax in pkg/obcs
409      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
410        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
411      - fix some threads issue in IO parts.
412    o pkg/dic:
413      - add tons of "_d 0" (--> much better testreports !)
414       and then update outputs of tutorial_global_oce_biogeo
415    o pkg/mom_fluxform:
416      add a special version of momentum advection intended to conserve momentum
417      next to a bathymetry step or a coastline edge. (default = off = #undef)
418    o new read/write pickup version:
419      - for now, only implemented for main (mdsio) pickup file.
420      - write out only what is needed to restart; merge pickup_nh , pickup_ph
421        and main pickup together.
422      - read meta file; read only what is needed to restart; stop if a field
423        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
424        if it make sense (even if the restart is not perfect).
425      - if no meta file, assume that pickup to read corresponds exactly to
426        a pickup that would currently be written.
427      - read pickup written in the old format (until checkpoint59i) if it
428        recognizes an old meta file (no field-list).
429      - add a meta file in exp. which starts from a pickup: 2 cases:
430        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
431         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
432        b) a meta file describing the content of the associated pickup file
433         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
434    o pkg/mdsio & pkg/rw:
435      - new routine to read a meta file ; new set of routine to read
436        Multiple-fields file (with meta file).
437    o added open boundary conditions capability for seaice
438        HSNOW, HSALT, UICE, and VICE
439    
440    checkpoint59i
441    o adjoint:
442      * fix multiDimAdvection adjoint
443        (partial recomputation problem by TAF for fVerT(:,:,kDown)
444        and comlev1 size definition (maxpass vs. max. number of tracers)
445      * verification/global_ocean.90x45x15 adjoint now tests
446        NLFS and multiDimAdvection using DST3 (=30)
447      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
448    o pkg/kpp: add "_d 0" to real constant (if missing);
449      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
450      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
451    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
452      for internal parameters related to restart process (formerly from PARAMS.h)
453      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
454    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
455      as argument. (only atm2d & obcs write_pickup have not yet been updated)
456    o pkg/monitor:
457      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
458      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
459      - account for deep Atmosphere factor and density factor (anelastic)
460    o added open boundary conditions capability for seaice HEFF and AREA
461    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
462      thermodynamics
463      - requires a little reorganization, which affects the testreport results
464        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
465        so that now the conservative form is tested
466      - add a few comments
467    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
468    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
469    o add new diagnostics to seaice: advective, diffusive fluxes (only for
470      multidim-advection, for scheme 2 they are not filled) and transports,
471      thermodynamic growth rates
472    o change units of EmPmR (inside the code, + within coupling interface)
473      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
474      Affects results @ truncation level (cg2d match) and update output of
475       experiments: lab_sea(6), global_ocean.90x40x15(10),
476      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
477      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
478      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
479      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
480    
481    checkpoint59h
482    o pkg/exf:
483      - improve vectorization by moving if-statement out of loops in
484        exf_mapfields, exf_radiation
485      - exf_bulkformulae.F: introduce 2D fields and vectorize code
486    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
487    o testreport:
488      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
489        monitor & update offline_exf_seaice exp. output.
490      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
491    o pkg/seaice:
492      - bug fix in the evp solver: boundary conditions were affected be
493        masking of zMax/zMin (changes results)
494      - minor bug fix in boundary conditions in seaice_calc_strainrates
495        (changes results for no_slip)
496      - seaice_lsr.F: make interpolation of eta dependent on boundaries
497      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
498      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
499        stress formulation and no-slip boundary conditions
500    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
501      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
502    o pkg/seaice: a first HSALT time stepping equation has been checked in
503    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
504      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
505      without requiring DO-IF statements
506    o pkg/thsice:
507      use continuous power-law function for partition of energy between lateral
508      melting/freezing and thinning/thickening ; old code using step function
509      still available with #undef THSICE_FRACEN_POWERLAW
510      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
511    o testreport: change AD testing : check against results/output_adm.txt
512      using same scripts as for forward test.
513    
514    checkpoint59g
515    o adjoint testing: in preparation for changing testreport:
516      - output format: cost and grad written on separated lines
517      - ad output results in directory "results" (instead of "results_ad")
518    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
519    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
520    o pkg/ecco: allow user defined cost function contributions
521    o testreport:
522      Allow to choose (per experiment) the list of tested output variables
523       and the main variable (used to issue a pass/FAIL ) ;
524      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
525      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
526      Also modify printing of summary:
527       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
528       b) echo the list of tested variables in the individual summary.txt of
529          each experiment.
530    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
531      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
532      (but still depend on the tile decompostion of the domain).
533    o pkg/seaice: change a discretization detail to make the B-grid code
534      "more symmetric". This change is likely to remove all "ridges/leads" that
535      where quasi-aligned with the grid in B-grid solutions. It may also be
536      the solution to the stress coupling issues with the B-grid.
537    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
538      remove .cvsignore from input dir. (since testreport no longer run here).
539    o pkg/thsice:
540     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
541     - fix reshaping of sea-ice just after advection:
542       melt all the ice only if ice-volume is too small.
543     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
544       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
545     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
546    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
547      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
548    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
549      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
550      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
551      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
552      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
553      -> update output.txt
554    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
555     this affects truncation error: -> update output.txt of exp:
556      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
557      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
558    
559    checkpoint59f
560    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
561    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
562      a bounded range (in forward mode)
563    o pkg/ecco, ctrl, autodiff and mom_common:
564     internal parameter controls, completements of implementations
565    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
566    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
567      (not seem any difference in testing results).
568    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
569       at face corners.
570    o pkg/generic_advdiff:
571     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
572      loop range indices for computing vertical advection tendency
573      and do the calculation in the interior only (no overlap) ;
574      for now, only implemented for SOM advection (to save CPU time).
575     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
576    o exch2 adjoint
577      First set of changes:
578      - add exch2 hand-written adjoint templates
579      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
580        This will require cleanup in pkg/autodiff/*.F
581        (changed routines currently kept separate in verif. code/)
582      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
583        that used to hide exch2 or cubed-sphere specific code
584        (commented via 'cph-exch2')
585    o pkg/seaice
586      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
587    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
588       output of global_ocean.cs32x15.thsice .
589    
590    checkpoint59e
591    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
592      for B-grid vector (not yet tested) and C-grid vector (<- only used
593      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
594    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
595      (#ifdef ALLOW_SALT_PLUME)
596    o gather_2d/scatter_2d: removed halo regions
597    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
598      scheme and the corresponding test case (under front_relax dir). For now,
599      only available with Skew-flux form and not yet tested in realistic set-up.
600      adjoint: store directives updated, but gradient checks deteriorated,
601      so maybe GM/Redi adjoint is now broken.
602    o seaice adjoint
603      * add AREA, HEFF, HSNOW as control variable
604        (should not change lab_sea results)
605      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
606    o pkg/seaice:
607      * added computation of saltFlux in seaice_growth;
608        For time being, sea ice salinity is assumed constant
609        contribution of snow flooding to freshening of sea ice is neglected.
610        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
611        defaults to 0.0 in order to maintain backward compatibility.
612        Typical values for SEAICE_salinity are 4 to 10 g/kg.
613      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
614      * added SEAICE_availHeatFrac, which specifies fraction of surface level
615        heat content used to melt or grow ice
616      * commented out cap of HICE: it helps keep ice thinner
617      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
618      * applied OBCS T/S mask to HEFFM sea ice mask
619    
620    checkpoint59d
621    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
622     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
623     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
624    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
625     and change default value of parameter "GM_Small_Number";
626     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
627       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
628       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
629    o pkg/ecco: cost function when applying pkg/smooth to controls
630    o pkg/ctrl: add forcingPrecond run time parameter
631    o pkg/seaice:
632     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
633     - fix bug in metric terms of u-equation in LSR solver (implicit part),
634       changes verification/lab_sea
635     - rearrange implicit part of u-equation in LSR solver to make it easier to
636       read, understand, and debug. This causes changes at the truncation level.
637     - fix (serious) bug in the boundary conditions (sign error in the implicit
638       part) of the LSR solver. Changes all LSR results.
639     - fixed problem with HSNOW initialization to avoid thick snow when AREA
640       is initilized with small values - does not change lab_sea results.
641     - added HsnowFile initialization capability
642    o pkg/smooth: addition to model/src and pkg/ctrl so allow
643     initialization of pkg/smooth and application to control vector
644    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
645    o dependencies: pkg/profiles requires pkg/cal
646    o pkg/profiles:
647     - added option ALLOW_PROFILES_GENERICGRID
648         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
649         that interpolation information (grid points and coefficients) is provided
650         within the netcdf input files.
651         -> sample matlab scripts can be found in MITgcm_contrib/gael
652         that allow you to prepare netcdf input files.
653     - also modified: cleaner include statements, cleaner error print statements,
654       cleaner stops when error, and more tests of the netcdf input files consistency.
655    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
656    o pkg/seaice:
657     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
658       requires a new routine: seaice_diagnostics_fill.F
659     - make sure that seaice does not move if not forced (pressure replacement
660       method, Hibler and Ip, 1995), changes results
661     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
662     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
663       It is turned off by default (=-1.), because it changes the results.
664     - make it possible to read AREA from a file, too.
665    
666    checkpoint59c
667    o add S/R and diagnostics for oceanic mixed-layer depth
668    o move GMRedi call after all vertical mixing schemes (including KPP)
669    o pkg/thsice:
670     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
671      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
672    o pkg/obcs:
673     - bug fix for balance code
674    o pkg/seaice:
675      - allow values of SEAICE_elasticParm > 1
676      - add new parameter SEAICE_evpTauRelax as an alternative
677        to SEAICE_elasticParm
678      - make lsr boundary conditions free slip (by default), changes result
679      - add code for no slip boundary conditions for lsr
680      - set minimum of zeta to zero (and not 4e8) (changes results)
681      - add a cap on AREA after advecting AREA if seaice_growth is not called
682    o change calculation of Visbeck K:
683      - no longer depend on tapering scheme; instead, compute slope (limited
684        by GM_maxSlope). this is equivalent to what was comuted before with
685        clipping or linear tappering.
686      - fix vertical averaging (wrong by 1/2 level)
687      - leave the old version (but will not be maintained) within
688        #ifdef OLD_VISBECK_CALC / #endif
689      - update output of exp. ideal_2D_oce
690    o change error catch in calc_r_star to improve vectorization
691    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
692      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
693    o adjoint:
694      Re-organized adjoint checkpointing according to Matt Mazloff
695      (but with modifs/completions/cleanups)
696      Storing is now bundled into large arrays to optimized I/O
697      (and second step in cleanup of the_main_loop)
698    
699    checkpoint59b
700    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
701      - export/import (between ocean & coupler) fields needed for ocean DIC.
702    o pkg/seaice:
703      - get rid of three more exchanges seaice_calc_viscosities (required
704        different loop boundaries in seaice_lsr and seaice_ocean_stress)
705      - bug fix in seaice_ocean_stress (update of lab_sea required)
706      - reduce loop boundaries to necessary minimum also in seaice_evp
707      - go back to the old way of computing deltaC/Z as the adjoint likes that
708        better
709    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
710      passive tracer to an Age Tracer) + update output.txt
711    o pkg/exf:
712      - implement A-grid / C-grid selection for wind-stress input files.
713      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
714      for now, in exf_bulk_largeyeager04.F only :
715      - change implementation for case where windspeed + 2. components wind-stress
716        are read-in. AND use rhoConstFresh to convert evap.
717    o pkg/seaice:
718      - use correct EXCH_UV for wind-forcing (on A-grid).
719      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
720        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
721    o pkg/exf:
722      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
723      EXF_INTERPOLATION:
724      - merge global_with_exf/code version of exf_interp_read.F
725        to the main code ;
726      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
727        reading the file ; Important: This options needs to be defined to recover
728        previous code.
729        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
730      - no longer loose real*8 precision along the way when using exf_iprec=64.
731    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
732      - change discretisation of evp-solver in order to avoid another exchange
733        (changes lab_sea) and clean up a little
734      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
735        help the adjoint (this also changes the results slightly)
736      - add a few "_d 0" where they had been missing in seaice_evp.F
737      - cleaning up: remove unused seaice_calc_rhs.F
738    o pkg/exf: some cleaning-up:
739      - change various "constants" into runtime parameters
740      - cleaned-up Large&Yeager04 routine which should eventually
741        replace exf_bulkformulae.F (changed names of S/R and CPP)
742        and merged various ALLOW_ATM_WIND options
743     only used with thsice pkg (in thsice_get_exf.F):
744      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
745        which are used when useStabilityFct_overIce=TRUE (= the default)
746      - change default values of ice & snow emissivity and scale downward LW
747        by ice & snow emissivity.
748    o pkg/thsice:
749     fix few little problems, in thsice_calc_thickn.F:
750      - growth vertically (and not laterally) if iceFrac == iceMaskMax
751      - melt only laterally if hIce < hThinIce (as the comments say)
752      and in thsice_extend.F:
753      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
754      - start to form ice as soon as the minimum ice-volume is reachable.
755     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
756      and cpl_aim+ocn
757    o pkg/kpp
758     - move computation of surface related input fields to KPP into a new
759       subroutine kpp_forcing_surf.F
760     - remove wrong (within bi,bj loops) EXCH calls.
761     - little cleaning (add argument myThid in last position, cvs header ...)
762     - for now, fix conservation problem by exchanging KPPviscAz (may not
763       be the best fix)
764    o pkg/seaice
765     - check for inconsistent evp parameter/cpp-flag combination
766     - remove leftover errIO flat for obsolete name list error handling
767    o OpenAD
768     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
769    
770    checkpoint59a
771    o pkg/seaice: some parameter clarifications and a little bit of clean up
772    o pkg/thsice: rename run-time parameters:
773       himin       -> hIceMin
774       himin0      -> hThinIce
775       hihig       -> hThickIce
776       i0          -> i0swFrac
777       transCoef   -> bMeltCoef
778       frac_energy -> fracMelting
779      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
780       with default values (for now) that do not change the results.
781      remove old version of thsice vars advection in pkg/seaice.
782    o in FFIELDS.h:
783      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
784      - make pLoad & sIceLoad always available (but still only used if
785         ATMOSPHERIC_LOADING is #define).
786    o pkg/kpp: replaced _KPP_RL with _RL
787    o bug fixes for vertical diffusivity computations when both KPP and
788        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
789        are no longer updating the vertical diffusivity array
790        (passed as argument) but are (re-) setting those arrays.
791    o pkg/seaice: fix bug in evp solver, while doing that
792      - change (improve?) discretization of stress computations for both
793        cgrid-lsr and evp solver
794      - add a new routine to compute strain rates
795      - the above changes lab_sea results
796      - add no slip conditions for evp solver (off by default), lsr-version
797        may follow
798      - fix exchange for shear at Z-points (does not change lab_sea)
799      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
800        (to force the user to pick a time step since there is not "safe" way
801        of choosing it)
802      - add principal stress diagnostics
803      - rearrange fields for evp a little to avoid having to call a: too many
804        exchanges and b: exchanges for stress trensor components which we do
805        not have.
806      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
807        of evp, complete rewrite for lsr case (latter is does not yet work
808        in all cases)
809    o pkg/kpp: add code to have mixing in shelf ice caverns
810      - add myThid to all kpp routines (long overdue)
811    
812    checkpoint59
813    o pkg/exf:
814      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
815        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
816      - move exf header files from lower_case.h to UPPER_CASE.h ;
817        add missing cvs Header & Name
818      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
819      - add namelist param. selectStressGridPosition, exf_monFreq
820      - retire many _CLIM routines, and remove data.exf_clim
821        + params moved to data.exf
822        + climsst, climsss now handled by exf_set_gen, i.e.
823          climss?period=0 refers to constant field,
824          climss?period=-12 to monthly forcing
825      - split up namelists in data.exf
826    o pkg/seaice:
827      - remove seaice_exch and seaice_exch_uv
828      - remove superfluous exchange of theta
829      - add myThid to seaice_budget_ocean/ice
830      - add new interface for atmospheric wind forcing (C-grid only)
831        + new routine
832        + two new field (taux, tauy for stress over ice)
833        + removed one global field (DAIRN) for C-grid case only
834    o pkg/thsise
835      - 2nd set of modifs for thsice adjoint in conjunction with exf
836    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
837    
838    checkpoint58y_post
839    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
840      vertical diffusivity, similar to that in MOM4; turned on using
841      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
842      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
843    o Added capability for 3D specification of background vertical diffusion
844      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
845      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
846      "data" file that contains the 3D vertical diffusivity coefficients.
847    o ice dynamics (pkg/seaice) with thsice thermodynamics:
848      - add code within pkg thsice to advect & diffuse sea-ice fields
849      similar to (and will replace) what has been added in  seaice_advdiff.F,
850      but: - conserving Mass, Heat & Salt.
851           - better when using non-linear advection scheme (not yet fully tested)
852           - can also be used in atmospheric set-up (for now, only the diffusion).
853    
854    checkpoint58x_post
855    o IO option for global-file compact format:
856      - add options when generating topology (utils/exch2/matlab-topology-generator)
857      - add I/O capability (pkg/mdsio).
858      - adapt utils/matlab/rdmds.m to read this format.
859      for now long-line format not yet supported by pkg/mdsio (& exch2).
860    o shelfice: add a few diagnostics
861    
862    checkpoint58w_post
863    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
864      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
865      (and replace horiVertRatio in NH code).
866      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
867                         and tutorial_plume_on_slope (sensitive to truncation)
868    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
869      directly to drive seaice model (C-grid only)
870    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
871     - reintroduce computation of wind from stress,
872     - compute tau (in exf_bulkformulae.F) from windstress averaged to
873       mass points to avoid tau = 0
874     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
875    o rdmnc.m: make it work with "global" files created with gluemnc
876    o rdmnc.m : some improvements in dealing with singleton dimension
877      (tested on all testreport mnc output files).
878    o genmake2: disable pkg/profiles if netcdf test fails.
879    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
880    o move call to cal_readparms up to make calendar parameters/variable available
881      to all packages
882    
883    checkpoint58v_post
884    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
885      useDynP_inEos_Zc tested.
886    o pkg/exf: changes to properly interpolate/mask/scale initial fields
887    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
888      and portions thereof.  See read_cs.txt for description and examples.
889    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
890      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
891      following the great-circle arc between those 2 points.
892    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
893      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
894    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
895     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
896     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
897     - still needs work (not working with some options ; efficiency to improve)
898       and serious testing.
899     - use this scheme for temperature & salinity in 2 advection test exp.:
900       advect_xy & advect_xz, respectively.
901    
902    checkpoint58u_post
903    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
904    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
905    o testreport: add option "-skipdir" to skip some test.
906    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
907      momentum calculation.
908    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
909    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
910      remove checkpoint.F and the_correction_step.F (no longer used);
911      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
912    o add option (linFSConserveTr) to correct for tracer source/sink due to
913      Linear Free surface
914    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
915    o pkg/thsice: fix reading mnc-pickups
916    
917    checkpoint58t_post
918    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
919    o pkg/mdsio:
920     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
921       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
922       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
923     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
924     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
925       either MDS_READ_FIELD or MDS_WRITE_FIELD )
926     - new S/R (to replace MDSWRITEMETA), which allows to write more
927       informations (variable names, time ...) to meta files.
928     - modify rdmds.m to give back the meta file content.
929    o pkg/diagnostics: change vertical interpolation to be safer, and more
930       flexible (define p-levels to interpolate to in data.diagnostics);
931      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
932       diagnostic pointer.
933    o pkg/seaice: more cleaning up of seaice_growth, added many comments
934    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
935    o fix multi-category seaice:
936     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
937       SEAICE_MULTICATEGORY
938     - fix short wave heat flux
939    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
940       and allow to use EVP solver. Change forward lab_sea: test both EVP
941       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
942    o Initial check-in of lab_sea adjoint
943      (very similar to natl_box_adjoint/code_seaice)
944      * used C-grid and EVP solver
945      * used KPP, GM/Redi
946      * uses inAdExact=.TRUE.
947      * gradient checks fail for both ADM and TLM
948        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
949        f.d. gradients actually seem more problematic than ADM, TLM gradients;
950        issue is related to forward mismatch between g77 an ifort
951    o pkg/seaice: overhaul of thermodynamics
952     - growth.F and groatb.F are replaced by new routine seaice_growth.F
953     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
954     - move a few global fields out of SEAICE.h into seaice_growth.F and
955       make them 2D (FICE/QNETO/ ...)
956     - remove FO (it is the same as QNETO)
957     - introduce a few local fields to avoid modifying external fields such
958       as atemp, etc.
959    
960    checkpoint58s_post
961    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
962      changed exf_set_gen.F so that
963        genperiod=0 means input file is one time-constant field and
964        genperiod=-12 means input file contains 12 monthly means
965    o CG2D: use pre-computed solver main-diagonal (stored in common block);
966      this affects truncation error ; generate new output file for exp. which
967      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
968        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
969        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
970        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
971        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
972        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
973    o start implementation of deep-atmosphere and anelastic formulation
974    o verification: remove 2nd copy of input files and use script "prepare_run"
975      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
976    o mom_common/vecinv/fluxform: fix a few initialisation isssues
977    o profiles: fix for multithreaded case
978    
979    o diagnostics: rename few diags:
980      s/'PRESSURE'/'RCENTER '/g
981      s/'TICE    '/'oceFreez'/g
982      s/'TAUX    '/'oceTAUX '/g
983      s/'TAUY    '/'oceTAUY '/g
984      s/'SWFLUX  '/'oceQsw  '/g
985      s/DIFx/DFxE/g
986      s/DIFy/DFyE/g
987      and add few ocean-forcing diagnostics:
988      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
989    o modifications to pkg/seaice/growth.F and budget.F, which change results of
990      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
991      as actual snow thickness.  It now refers everywhere to effective snow
992      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
993    
994    checkpoint58r_post
995    o modifications to pkg/seaice/growth.F, which change results of
996      lab_sea experiment: fixes pertain to melting snow over open water, to
997      masking EVAP under sea ice, and to using the correct AREA variable for
998      computations of EVAP, PRECIP, HSNOW, and GHEFF
999    o add ability to read bathy, salt, and theta using MNC (off by def)
1000    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1001      both are turned off by default and do no change any results
1002    o seaice advection with pkg/thsice: a step toward the use of non-linear
1003      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1004    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1005      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1006      in natl_box (affects results @ truncation level: update output.txt)
1007    o multi-threading and IO:
1008      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1009      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1010        (needed to work with SingleCpuIO): tested in all verif. exp.
1011    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1012      affects the results (but none of the verification test uses this scheme).
1013    o Adding some pkg/diagnostics capability to pkg/seaice
1014      (will certainly be subject to changes)
1015    o ctrl: adding new control variables:
1016      lwflux, lwdown, evap, snowprecip, apressure, runoff
1017    
1018    checkpoint58q_post
1019    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1020      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1021      high_res_cube configuration by 4% on Columbia.
1022    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1023      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1024      dynamical allocation (seems to work in multi-threaded).
1025    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1026      single CPU io) so that TAF does not have to see EESUPPORT.h
1027    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1028    
1029    checkpoint58p_post
1030    o obcs: stop if obcs is used with useCDscheme = .true.
1031    o shelfice:
1032     - fix a sign error so that no slip at shelfice interface works
1033     - remove stop for combination non-hydrostatic code and shelfice. That does
1034       not mean, that the results are correct, but at least they are numerically
1035       stable
1036    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1037    o added adjoint exch routined for all exch*3d* routines
1038      and updated flow directives
1039    
1040    checkpoint58o_post
1041    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1042      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1043    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1044      and clean-up reading/writing of pickup files.
1045    o fix local version of read/write pickup (NH part) in rotating_tank/code
1046    o simplify EXCH interface:
1047     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1048     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1049    o added the regrid package
1050    o shelfice:
1051     - add a simple boundary layer scheme to reduce noise
1052     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1053    
1054    checkpoint58n_post
1055    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1056       local variable (not in common block).
1057    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1058      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1059      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1060        to work with SingleCpuIO.
1061    o add "_d 0" to real constant of pkg/cfc subroutines ;
1062       update exp. cfc_exemple & tutorial_cfc_offline output files.
1063    o multi-threading and IO:
1064      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1065        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1066      - barrier before and after reading.
1067      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1068      - avoid using MDS_WRITELOCAL for LAND pkg output.
1069      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1070        common-block variables ; Allows multi-threading with master-thread IO.
1071    o change default MAX_NO_THREADS from 32 to 4 ;
1072      and stop cleanly when MAX_NO_THREADS is too small.
1073    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1074    
1075    checkpoint58m_post
1076    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1077       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1078    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1079       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1080       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1081    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1082        add MITgcm_tutorials (= code + all the tutorials)
1083    o ecco, option to compute cost for total ssh (mean+anom)
1084    o consistent with addition of ptracer and ssh in pkg/profiles
1085    o profiles: adding ptracer and ssh
1086    o testreport: change multi-test output-file name
1087      (from output.txt.{name} to output.{name}.txt)
1088    o profiles: now ok for mutli-tiles case
1089    o seaice: add 4 parameters for different advection schemes for area,
1090      (effective) seaice thickness, enthalphy, and snow height. Their default
1091      is the standard parameter SEAICEadvScheme
1092    o calc_gw:
1093     - add cosFacU in zonal viscous flux (harmonic.visc.).
1094     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1095       of tutorial_plume_on_slope.
1096    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1097    o calc_gw: true flux-form, account for horizontal grid spacing.
1098      update rotating_tank results, but not plume_on_slope (affected at
1099      truncation level, 11 digits).
1100    
1101    checkpoint58l_post
1102    o calc_gw:
1103     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1104     - remove side-drag for now (need to fix it); update plume_on_slope results.
1105     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1106    o commit code to make SST/SSS weights spatially variable
1107      (based on either variable in-situ or variable initial T/S weights)
1108    o pkg/ecco:
1109      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1110        now based on horizontally varying weights wthetaLev, wsaltLev
1111      * cost_averagesflags now returns year indices in addition to day, month
1112      * sflux balance is performed on annual basis
1113        (sflxumm, sfluxmm2, bal_sfluxmm)
1114      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1115        including separate counting and multipliers
1116    o pkg/rbcs
1117      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1118    
1119    checkpoint58k_post
1120    o testreport:
1121     - always build in dir. "build" (if not there, mkdir build instead of building
1122       & running in input)
1123     - run in dir run (if it exists), in build otherwise.
1124     - call prepare_run (if input/prepare_run exists)
1125     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1126    o pkg/exf modifications to interpolation and rotation routines for more
1127       reasonable treatment of North Pole singularity: for tracers North Pole
1128       value is set to northernmost zonal-mean value, for zonal velocity it is
1129       set to zero, and for meridional velocity it is set to northernmost value.
1130    o pkg/exf/exf_check_range.F
1131     - add tile index to diagnostics and move stop statement to the very
1132       end of the routine.
1133    o pkg/diagnostics: (diagnostics_main_init.F)
1134      define title of isomorphic variables according to the current config.
1135    o pkg/thsice with pkg/seaice dynamics:
1136    - fix domain of computation (interior only, required for exf) and do exchanges
1137    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1138    o towards a standard way of dealing with multi-threading in MONITOR
1139      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1140    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1141       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1142    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1143    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1144    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1145       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1146    o tracer advection:
1147     - clean-up and simplify calc_common_factors.F
1148     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1149       advection subroutine (but still not used within DST advection S/R)
1150    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1151    
1152    checkpoint58j_post
1153    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1154      from file (collects calls previously in FORWARD_STEP)
1155    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1156    o adjoint store dir. adjusted accordingly
1157    o genmake2
1158      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1159    
1160    checkpoint58i_post
1161    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1162      on wind stress (SEAICEstressFactor defaults to 1.)
1163    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1164      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1165    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1166      on CS-grid: no longer loosing mass.
1167    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1168    o pkg/ggl90: fix sloppy output and fix a bug
1169    o pkg/seaice: added SEAICEuseEVPpickup parameter
1170      - Set to false in order to start EVP solver with
1171        non-EVP pickup files when using SEAICEuseEVP
1172      - fix sign error in diffusion in seaice_calc_rhs
1173    
1174    checkpoint58h_post
1175    * Modifications for bottom topography control
1176      o replace hFacC by _hFacC at various places
1177      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1178      o add non-self-adjoint cg2d_nsa
1179      o update autodiff support routines
1180      o re-initialise hfac after ctrl_depth_ini
1181      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1182    * Adding verification for 5x5 box (4-layer) bottom topography control
1183    
1184    checkpoint58g_post
1185    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1186       used for mean seasonal cycle, mean diurnal cycle); add an example
1187       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1188    o pkg/ggl90:
1189      - add parameter (minimum surface kinetic energy)
1190      - fix bug (avoiding division by zero)
1191    o couple pkg/thsice to pkg/seaice:
1192      - modify advection in seaice to accomodate new scalar fields to be advected
1193      - only muliDimAdection scheme work with seaice/thsice
1194      - mapping of thsice-variables to seaice-variables, back and forth
1195      - does not break the verification experiments, but does not give the
1196        desired results either
1197    o pkg/seaice
1198      - make (default) second order advection a bit less confusing?
1199    
1200    checkpoint58f_post
1201    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1202      to pkg/seaice):
1203      - new routines thsice_map_exf and thsice_get_exf provide the interface
1204      - add an additional formal parameter to thsice_solve4temp
1205    o pkg/exf:
1206      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1207      - correct Stefan-Boltzmann constant
1208      - new parameter for longwave surface emittance
1209      - separate some stuff from exf_bulkformulae into new routines  
1210        exf_radiation, exf_wind
1211      - add new parameters and constants: longwave emissivity for ocean, ice
1212        and snow, evaporation parameters over ice
1213      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1214        either wind from stress or stress from wind
1215    o pkg/thSIce:
1216    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1217    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1218       and THSICE_CALC_THICKN
1219    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1220    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1221      to make debugging easier.
1222    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1223    o pkg/bulk_force:
1224      - clean-up comments and parameters ;
1225      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1226    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1227      generate new output for test-experiment: aim.5l_cs.thSI
1228    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1229      testreport accordingly
1230    
1231    checkpoint58e_post
1232    o SEAICE_CGRID adjoint done
1233    o R_STAR adjoint implemented.
1234      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1235      * need to sort out init. of h0facc, etc.
1236    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1237      to be able to use it in pure forward.
1238    
1239    checkpoint58d_post
1240    o upgrade simple test-experiment to tutorial example:
1241     step.1: duplicate the experiment and (step.2) will remove the old copy.
1242      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1243      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1244      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1245      tutorial_global_oce_biogeo    <- copy of dic_example
1246      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1247      tutorial_plume_on_slope       <- copy of plume_on_slope
1248      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1249      tutorial_global_oce_optim     <- empty for now (David ?)
1250      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1251     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1252    o correct a sign problem in cost_scat.F
1253    o obcs and ptracers: fix boundary conditions for advections schemes
1254      with larger stencil
1255    o thsice adjoint: start
1256    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1257      completeness
1258    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1259      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1260    o ptracers adjoint:
1261      * avoid extensive recomputatations
1262      * fix missing re-init. of gptr (missed by TAF)
1263    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1264      me to turn off the excessive output to STDOUT that this package produces
1265    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1266      and add those terms in Vector-Invariant formulation.
1267    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1268      if the control period (xx_hfluxperiod etc) is 0
1269    o in profiles pkg, clean routines and fix details
1270    o in ecco pkg, reading ssh data:
1271      fix problem in case the model does not start at iter0=0
1272    o fix mnc-pickup/restart for ptracers
1273    o new package prifiles:
1274      code to compute profile-based cost by Gael Forget
1275      (modifs in ecco, ctrl, autodiff)
1276    o Benign bug fix in initialization (spotted by M. Mazloff) of
1277      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1278    
1279    checkpoint58c_post
1280    o adjoint: finish NLFS adjoint and provide reference output in
1281      verification/global_ocean.90x40x15/results_ad_nlfs
1282    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1283      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1284      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1285      with SEAICE_CGRID defined.
1286    o move calendarDumps from "data" to "data.cal" and clean-up the code
1287      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1288    o add useEXF & useCAL flags (for now, set in hard-coded way)
1289    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1290      (were missing in NH mode, and wrong in quasihydrostatic mode).
1291      waiting for Chris updated version of calc_gw to add those CALLs.
1292    o fix bug in quasihydrostatic S/R ;
1293      add a test for this option: global_ocean.90x40x15.qshyd
1294    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1295      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1296    o add on/off flag useOffLine for package OFFLINE
1297    o seaice:
1298      - modify advection so that it works also on the C-grid
1299      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1300        problem in multi-tile runs with C-grid
1301      - add flags for clipping ice velocities and/or masking solver forcing
1302      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1303        C-grid solver
1304      - added a few comments to seaice_diffusion.F
1305      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1306        are now exclusive)
1307      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1308        required re-ordering the code a little:
1309       + make DAIRN global variable (defined in SEAICE)
1310       + move computation of the viscosities eta and zeta into a new separate
1311         routine (because I need to recompute them in seaice_ocean_stress.F)
1312    
1313    checkpoint58b_post
1314    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1315      update output.txt of exp. aim.5l_cs.thSI
1316    o various mnc cleanups and improvements:
1317      + shrink lookup tables by factor of ~4
1318      + better error reporting when running out of lookup space
1319      + able to handle longer path/file names (up to 500 chars)
1320    o adjoint:
1321      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1322      - TBD: "hidden" mom_vecinv recomp. in dynamics
1323    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1324     (allow to differentiate between forcing components using new integer flags:
1325      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1326     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1327    o ecco
1328      - enable trend removal from SSH anomaly obs.
1329    o adjoint
1330      - a fix for PmEpR when #undef EXACT_CONSERV
1331      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1332      - try to fix "hidden" recomp. in forward_step for NLFS
1333        (NLFS seems broken sometimes after I checked it in)
1334    o seaice:
1335     - add c-grid version of the dynamic solver:
1336       + three new routines that are the c-grid substitute lsr, dynsolver
1337         and ostres
1338       + put a few fields that were local to dynsolver into global common
1339         blocks, so that I can move the computation of stresses etc into
1340         seaice_lsr (saves coding but may break the adjoint).
1341     - replace more hardwired parameters by runtime parameters
1342     - add ice masks that mask the rhs of the implicit solvers where there
1343       is no ice (commented out in seaice_dynsolver, because i am not sure
1344       if this works properly), eventually this should replace the clipping
1345       of ice velocities in seaice_dynsolver to +/-40cm/s.
1346    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1347      include it only where its needed
1348    o move balancing of fluxes before the call of external_forcing_surf
1349    o seaice:
1350      - correct units of turning angles (now they are really in degrees)
1351      - move computation of GWATX/Y out of main routine into dynsolver
1352      - initialize GWATX/Y in seaice_init
1353    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1354      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1355    o seaice: add runtime flags for turning angles (default to zero)
1356    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1357      and trend from exf forcing and ctrl control adjustments
1358    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1359      (since checkpoint57x_post)
1360    o change the default rotation period to 86164.s = the Earth rotation
1361    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1362      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1363    o seaice advection: add code for choosing between the default (2nd order
1364      central differences) and multiDim advection schemes provided by
1365      pkg/generic_advdiff
1366    o seaice:
1367      - removed all references to SEAICE_GRID.h fields from
1368        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1369        (cubed-sphere configuration will change a little)
1370      - grid computations in seaice_init are obsolete now.
1371      - cleaned up code a little so that is easier to read (hopefully).
1372      - added new (better?) discretizations of default advection and diffusion
1373        (turn on with SEAICEuseFluxForm)
1374      - replace 1 in 3d global fields by kSurface in growth.F
1375      
1376    checkpoint58a_post
1377    o seaice:
1378      - bug fix in advect.F
1379    o shelfice:
1380      - separate shelfice load anomaly from pload (breaks with time
1381        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1382        Its default is 0., but it may be computed more cleverly from (unknown)
1383        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1384        done offline. A good approximation of the pressure load anomaly is
1385        necessary to avoid large initial adjustment processes underneath
1386        deep-reaching shelfice.
1387      - small fix in ISOMIP shelfice_thermodynamics
1388      - add more sophisticated thermodynamics of Hellmer (1989), this is
1389        now the default
1390      - give a few constants more intuitive names
1391    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1392      if bulk formulae are used in long integration (especially EmPmR). Turn
1393      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1394      if balancePrintMean, the imbalance that is substracted is printed to
1395      STDOUT.
1396    o fix bug (typo) in obcs_apply_eta.F
1397    o add a new package shelfice which enables us to model the circulation
1398      underneath shelf-ice with draughts of hundreds of meters.
1399     - works
1400     - to do: + include improved thermodynamics
1401              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1402                instead of new field kTopC
1403              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1404                instead of new field R_shelfIce and new code in ini_depth.F
1405                and ini_mask_etc.F?
1406              + adjust vertical mixing schemes?
1407    o seaice pkg:
1408     - add a cpp-flag to include a simple formula for a salinity dependent
1409       freezing point of sea water at the surface
1410     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1411       meridional stresses are now different (and hopefully correct)
1412    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1413       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1414       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1415    o pkg/diagnostics: add options and parameters for regional-statistics
1416       diagnostics ; define regions by reading a region-mask from a file
1417       (might add other options later)
1418    o pkg/bulk_force:
1419     - add option and parameters to use AIM surface-flux formulae.
1420     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1421       others forcing fields (defined in PARM05, parameter file "data") are loaded
1422       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1423     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1424     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1425     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1426       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1427     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1428    
1429    checkpoint58
1430    o add "--embed-source" option to genmake2 which, when the supporting
1431      tools can be compiled (as determined by genmake2) will turn on the
1432      embed_files package which then embeds the entire MITgcm source code
1433      (*.[fFhc] + Makefile) used for the build within the executable
1434      - requested by CNH but off by default
1435      - adds a paltry <9MB to the mitgcmuv executable in most cases
1436      - only writes the output when useEMBEDSRC in eedata is true
1437    o clean up 3-dim. relaxation codes:
1438      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1439      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1440      * Thanks to Tom Haine for testing!
1441    
1442    checkpoint57z_post
1443    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1444      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1445    o fix the pickup behavior for obcs in combination with ptracers
1446    o fix a bug in ptracers_external_fields_load
1447    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1448      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1449    o transfered surface NH pressure to eta field (if exactConserv).
1450    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1451         and update lab_sea output.txt file.
1452    o completing 3-dim. relaxation code: additional term
1453         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1454      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1455      * At compile time, in "EXF_OPTIONS.h" set
1456          #define  ALLOW_CLIMTEMP_RELAXATION
1457          #define  ALLOW_CLIMSALT_RELAXATION
1458      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1459          tauThetaClimRelax3Dim = 15552000.0,
1460          tauSaltClimRelax3Dim  = 15552000.0,
1461      * 3 cases:
1462          1) Use a constant-in-time 3-dim. field
1463          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1464          3) Real-time relax. to time-evolving prescribed field
1465    o Adding Laplacian-type smoothness constraint on
1466      initial and boundary (forcing) controls (ic, bc)
1467      * enable at compile-time via
1468        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1469      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1470      * Absolute scale somewhat unclear so far
1471      * no area weighting was included since no other cost term does so far
1472    
1473    checkpoint57y_post
1474    First step for a NLFS adjoint
1475    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1476    o new init. routines for calc_r_star, calc_surf_dr
1477    o still need to deal with ini_masks_etc
1478    o testreport seemed happy
1479    checkpoint57y_pre
1480    
1481    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1482    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1483    o add new offset feature to offline pkg (plus minor cleanup)
1484    o cfc fixes for final year of integration
1485    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1486      be in GCHEM_OPTIONS).
1487    
1488    checkpoint57x_post
1489    o fix testreport Pb in multiple test experiment.
1490    o cleanup our namelist syntax in verification:
1491      - make it more F95 standards compliant (some work still needed)
1492      - allows the vast majority of our tests to work with gfortran
1493    o Non-Hydrostatic:
1494     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1495     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1496    o Allow to apply AB on T,S rather than on AB(gT,gS):
1497     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1498     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1499       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1500     - need a "clever" read_pickup to restart from the other AB formulation
1501    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1502    o remove some unused variables (reduces number of compiler warnings)
1503    o adjoint
1504      * Disable useVariableViscosity for adjoint for time being
1505        (there are a number of extensive recomputations)
1506      * Initialize certain variables needed for adjoint
1507    
1508    checkpoint57w_post
1509    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1510                 fix the singleCpuIO RS version of MDSWRITEFIELD
1511       and add a WARNING if using globalFiles=T with multi-processors.
1512    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1513      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1514    o tracer advection scheme:
1515      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1516       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1517       was not very convenient).
1518      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1519       (further tests needed for the implicit DST & Flux-Limiter schemes).
1520    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1521      and sRef for convenience, handy, when you want to initialize
1522      ptracers in a large domain with a constant non-zero value. Also,
1523      untangle ptracers_init.F a little.
1524    
1525    checkpoint57v_post
1526    o change dome exp. to use variable viscosity in side-drag terms.
1527    o remove all the files from the cfc_offline test since they are now
1528      incorporated into tutorial_cfc_offline which has been producing
1529      identical results for a few days of testing
1530    o add new parameter: sideDragFactor to enable half-slip-side BC
1531      and change side-drag S/R to use viscosity from mom_calc_visc
1532      (can switch back by setting sideDragFactor=0.); affects results at
1533      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1534       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1535    o vorticity & strain are now computed without masking, to account for
1536      no-slip-side BC in variable viscosity calculation ; mask is applied
1537      anyway later on, before computing advection/coriolis terms.
1538    o modify exp4 to test new obcs support for reading from external files
1539      and for passive tracers
1540    o fix behavior of ptracers_monitor when monitor output is written to a
1541      netcdf-file; still not independent of monitor.F (writes in the same
1542      file).
1543    o change default value of tRef (put a uniform, meaningful value for ocean
1544      & atmos) and initialize sRef (was missing, as Martin mentioned).
1545    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1546      to be proportional to enstrophy dissipation length.  Thus,
1547       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1548      This is now consistent with Smagorinsky and with the manual.
1549    
1550    checkpoint57u_post
1551    o OBCS and PTRACERS: add open boundary support for passive tracers
1552      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1553        OB-values from file; this is not different from the way theta and salinity
1554        are treated
1555      - however, Orlanski-radiation conditions are not supported, and the model
1556        will stop if you use pTracers and Orlanski at the same time.
1557      - beefed up the rountine obcs_external_fields_load: now only those open
1558        boundary values are overwritten with values from files for which there
1559        are really files, otherwise the OB-fields remain untouched. This makes
1560        it possible to use different OBs at different ends of the domain (as
1561        with EXF)
1562    o reduce number of exch calls in shap_filt (s2).
1563    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1564      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1565    
1566    checkpoint57t_post
1567    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1568    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1569      same truncation, independent of the face number: affects affects several
1570      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1571    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1572      note that biharmonic viscosity + no-slip was not tested in any experiment.
1573    o fix bug in non-linear free-surf side-drag ; generate new output for
1574      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1575    o make mnc honor the writeBinaryPrec flag for most kinds of output
1576    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1577    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1578      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1579    o add brackets in multi-terms sum to get same truncation, independent of
1580      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1581      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1582    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1583      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1584      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1585      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1586      Suggested values of viscosity parameters found in mom_calc_visc.
1587      Many new viscosity diagnostics available.
1588    
1589    checkpoint57s_post
1590    o Add clearing-house for viscosity calculations, mom_calc_visc and
1591      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1592      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1593      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1594      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1595      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1596      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1597      ViscAhStrain and viscAhTension are now retired.
1598    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1599    o In response to JMC's bug report, genmake2 now ignores any soft-links
1600      that it finds in the *current* directory when searching for files.
1601      Soft-links found in any other source directories will still work as
1602      they did before.
1603    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1604      a C routine to unlimit the stack size
1605    o mnc-ify pkg/aim snapshot vars
1606    o mnc-ify pkg/land as requested by Daniel
1607    o various changes to mnc including:
1608      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1609      - output can now be grouped so that all files within a group
1610          change the ITER portion of their names in lock-step together
1611      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1612          and works with both EXCH1 and EXCH2 (but needs more testing)
1613      - writing works for all verification test cases w/ g77 on Linux
1614    
1615    checkpoint57r_post
1616    o make MNC variable initialization happen earlier
1617    o add diagnostics for (almost) each term of the momentum Eq.
1618    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1619    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1620    o remove MINIMAL_TAVE_OUTPUT option ;
1621      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1622    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1623      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1624    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1625    o add time-dependent SST, SSS control
1626    o cost terms in ecco/ modularized (new cost_generic.F)
1627    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1628    o new infrastructure for seaice model vs. obs misfits in seaice/
1629      * driver from the_main_loop.F is seaice_cost_driver.F
1630      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1631      * gradient check in Exp. 6a of natl_box_adjoint/
1632    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1633      (see README file)
1634    
1635    checkpoint57q_post
1636    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1637    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1638      - bug was reported by Jean-Michel and Ian Fenty
1639    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1640      update exp. cpl_aim+ocn output.
1641    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1642      Needed for high-res. runs with large global files
1643      to be able to limit tapelev size
1644    o Changed some tests for adjoint:
1645      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1646      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1647      * global_ocean.90x40x15/ back to default 3-level checkpointing
1648    o Modifications to enable scripted COMMON to MODULE conversion
1649      * verification/OpenAD/code/ has necessary scripts and description;
1650      * converts, compiles and runs successfully;
1651    
1652    checkpoint57p_post
1653    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1654    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1655      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1656    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1657    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1658      (was already the case for dissipation with mom_vecinv,
1659       and also the case for grad.PhiHyd when staggered-timeStep)
1660      This will allow to put dissipation out-off the AB time-stepping.
1661     Unfortunately, affects truncation error. Update output of exp. that "fails"
1662      (cg2d matching number) and leave the others for later: front_relax(10),
1663      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1664      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1665    
1666    checkpoint57o_post
1667    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1668      (2) its ready to be documented during the 20050801 DocFest
1669    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1670      for ideal_2D_oce and lab_sea on linux_ia32_g77
1671    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1672      in global1x1_tot/code_seaice_adj to access indices 32, 33
1673      (worth another tag)
1674    
1675    checkpoint57n_post
1676    o adding precip control xx_precip 32
1677    o adding swflux control xx_swflux 33
1678    o Replacing 10 forcing penalty cost routines by 1 generic.
1679    o Implementing partitioning in time-mean and variable adjustment
1680      for atmos. state.
1681    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1682    o in natl_box_adjoint:
1683      * updated exp 1 to 10
1684        (but does not have time-mean vs. variable split results yet)
1685    o updated global1x1/*_seaice_adj/
1686      to incorporate latest changes
1687    o enable useSingleCpuIO for mdsio vector routines
1688      (applies in particular to tapelev I/O)
1689    o removed inefficient K-loop in all active_file*control*.F
1690    
1691    checkpoint57m_post
1692    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1693      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1694    o pkg/exch2: filling of face-corner halo regions is optional
1695      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1696    
1697    checkpoint57l_post
1698     tag before updating tutorials (pre-release-2)
1699    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1700       for output and interpolation of input fields onto model grid)
1701    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1702       Affects results of exp. rotating_tank ; update output.txt.
1703    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1704          and taking the square quantity and/or using a fraction-weight field.
1705    o fix aim_diagnostics_init.F mate numbers.
1706    o add mnc output capability to diagnostics/diagstat and update
1707      our cvsignore files for the ACSII output generated
1708    
1709    checkpoint57k_post
1710    o lab_sea now uses diagnostics package and provides a suite of
1711      new EXF diagnostics output.
1712    
1713    checkpoint57j_post
1714    o exf
1715      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1716        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1717        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1718      * extended diagnostics output
1719        - now includes all EXF variables
1720        - hs, hl moved to common block
1721        - separate S/R for diagnostics, called after ctrl vector is added
1722        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1723        - EXFqnet contains true Qnet (i.e. includes qsw)
1724      * updated verif. lab_sea, global_with_exf
1725      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1726        to ensure that diagnostics sees a true EXFqnet
1727    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1728    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1729      several times with different frequencies.
1730    o mnc-ify the thsice package as requested by Daniel Enderton
1731      - the monitor--MNC output needs work
1732      - many attributes need to be added (most are currently blank)
1733    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1734      - many attributes need to be added (most are currently blank)
1735    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1736    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1737    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1738      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1739         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1740    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1741     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1742    
1743    checkpoint57i_post
1744    o Diagnostics package was changed: diagnostic allocation is now deactivated
1745      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1746    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1747      add 1rst Order upwind vertical Shear.
1748    o add a quick fix for A/B checkpointing in OFFLINE mode
1749    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1750      end-run around the C/Fortran linking horror in eesup/src/timers.F
1751    o added pkg/runclock: allows user to terminate run based on wall clock
1752    o added non-hydrostatic scaling parameter: nh_am2
1753    o pkg/my82: futile attempt to make results compiler-independent by adding
1754      some "_d 0", etc. no effect.
1755    o for mnc output, fill the 'T' coordinate var with myTime and create a
1756      separate 'iter' variable for iteration count
1757    o pkg/diagnostics:
1758      add new capability: output of Global/Regional & per-level statistics ;
1759      tested against monitor output (including land & thSIce) on various exp.
1760    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1761    
1762    checkpoint57h_done
1763      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1764      data.diagnostics, data.gchem, data.ptracers) is done.
1765    
1766    o pkg/diagnostics: prepare for Global/Regional statistics.
1767      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1768    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1769      and rename it: DIFFERENT_MULTIPLE
1770    
1771    checkpoint57h_post
1772    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1773    o pkg/diagnostics: change output frequency, now in seconds (instead
1774      of Nb of iterations). This requires to change data.diagnostics.
1775    checkpoint57h_pre
1776    
1777    o in mnc, let the user create the output dir if both mnc_outdir_date
1778      and mnc_outdir_num are false
1779    o add fflags() to pkg/diagnostics which allows one to specify, on a
1780      per-file basis, the file precision [default behavior is unchanged]
1781    o added diagnostics to pkg/kpp, including computation of mixed layer
1782      depth based on a temperature/density criterion
1783    o updated verification/natl_box to test the new pkg/kpp diagnostics
1784    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1785    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1786    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1787      not mnc -- this mistake was found by JMC and is now corrected
1788    
1789    checkpoint57g_post
1790    o add Adams-Bashforth 3rd Order time stepping:
1791      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1792      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1793    checkpoint57g_pre
1794    
1795    o make lambda[Theta,Salt]ClimRelax spatially varying
1796      (default remains spatially uniform constant based on tau)
1797    o added new control variables
1798      * init. uVel, vVel, etanN
1799      * lambda[Theta,Salt]ClimRelax
1800    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1801      (suggested by G. Forget)
1802    
1803    checkpoint57f_post
1804    o add parameter "baseTime" = model base time = time at iteration zero
1805      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1806      account for baseTime shift
1807    o move Coriolis arrays from PARAMS.h to GRID.h
1808    checkpoint57f_pre
1809    
1810    o mnc-ifying the seaice package
1811    o introduced an alternative length scale calculation for use in the limiting
1812      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1813    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1814    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1815      as well as grad(vort3).  Made it compatible with both approximate form
1816      for the cubed sphere and full form of these gradients.  Added flag
1817      useFullLeith to select between approximate and full form.  
1818    o add "d0" in getcon.F to reduce differences between compilers/platforms
1819      update output.txt of exp. fizhi-gridalt-hs
1820    o change port_rand funtion to allow to set the seed.
1821    o fix obscure MNC bug involving conversion between reals and integers
1822      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1823        new version is now more standards-compliant
1824    o adjoint-related modifications
1825      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1826      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1827      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1828    
1829    checkpoint57e_post
1830    o Adding eddy stress controls a la Ferreira et al.
1831    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1832    
1833    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1834      update output.txt of exp. fizhi-gridalt-hs
1835    o add more "Z" dimensions and associated coordinate vars to MNC
1836    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1837    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1838      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1839      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1840      months and years.  Requires pkg/cal.
1841    o diagnostics: add pickup functionality
1842      - off by default for backwards compatibility
1843      - current version only uses MDSIO -- MNC will be added
1844    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1845    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1846    
1847    checkpoint57d_post
1848    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1849    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1850      output from the diagnostics package
1851    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1852    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1853      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1854    o add coordinate variables to the MNC output from the diagnostics package
1855    o change MNC-flags default value: true when useMNC=TRUE
1856    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1857      the ability (off by default) to read the grid information using MNC
1858    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1859    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1860    o do snap-shot diagnostics at the middle of the time-interval (instead of
1861      at the end).
1862    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1863      new test for AIM with thSIce + slab-ocean
1864    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1865    o move state variable diagnostics to the beginning of the time step ;
1866      (note: still needs some work specially for snap-shot diagnostics)
1867      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1868    
1869    checkpoint57c_post
1870    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1871    o generate new output.txt files on faulks with g77 & the new -ieee option
1872    checkpoint57c_pre
1873    
1874    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1875      update output.txt of exp. global_ocean.90x40x15
1876    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1877      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1878    o add saltFlux(+File) forcing capability with periodicExternalForcing
1879    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1880    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1881    o improvements for the MNC output from DIAGNOSTICS:
1882      - correct handling of the unlimitied dimension
1883      - all dims now have associated coordinate variables
1884      - variables located at U, V, and Corner ("Z") points are now written
1885        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1886        *all* data points are output
1887    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1888    o added pkg/seaice/seaice_monitor.F
1889    o mdsio_readfield.F can now read files visible only to master MPI process.
1890    o pkg/seaice: some test code for ice-modified ocean stress
1891    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1892      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1893      spurious negative numbers for precipitation and humidity.  Will cause
1894      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1895    o pkg/ctrl/
1896      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1897        May be enabled via doPackDiag
1898      *  introduce z-scaling of
1899         + gradient (doZscalePack) and
1900         + control (doZscaleUnpack)
1901    o pkg/mdsio/
1902      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1903      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1904    
1905    checkpoint57b_post
1906    o simplify options in diagnostics_fill arguments (remove weird combinations)
1907    o fix MNC coordinate variables so that they now contain per-face index
1908      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1909      general, EXCH2 grids are only aligned to a "local" coordinate system
1910    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1911    o Implement instantaneous output within pkg diagnostics:
1912      setting a negative frequency in data.diagnostics produces
1913     "snap-shot" output (as opposed to time-average if freq > 0)
1914    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1915      NOTE: change ptracer diagnostics name: use 2 characters to work with
1916            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1917    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1918      becomes the coordinate variable for the 'T' dimension
1919    o add CF-style coordinate variables to MNC
1920      - just a first cut:  numbers are meaningless on the cubesphere and
1921        missing along the T axis but otherwise it works!
1922    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1923    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1924    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1925      this is based directly on what the model compute, so that the content of
1926      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1927    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1928    o clean up build options files for SunOS, in particular
1929      - remove -traditional from xmakedepend
1930      - change -xarch=v9 to -xarch=native for f77
1931      - restore use of make (not gmake)
1932      - add CC=gcc if using g77
1933    o changes per discussion of AM, JMC, & EH3 today:
1934      - move redundant "grid" variables out of "state" -- in preparation of
1935        creating proper CF-style coordinate variables and in recognition
1936        that any/all grid variables can be easily copied (eg. w/NCO) from
1937        the grid files into any of the other NetCDF files
1938      - *always* output grid variables with MDSIO (this will eventually be
1939        changed)
1940      - output MNC grid file if useMNC is true
1941    o every instance of _END_MASTER() has been found and replaced with
1942      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1943      preprocessors
1944    o re-arrange diagnostics pkg initialisation:
1945     - allow each package to extend the available diagnostics list
1946     - add some checking and fix small problems (multi-threaded, ...)
1947     - new S/R diagnostics_fill (replace fill_diagnostics):
1948       look through the short list of active diag. (instead of the long list)
1949       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1950    
1951    checkpoint57a_post
1952    o this set of changes restores TAMC compatibility
1953      tested for global_ocean.90x40x15 adjoint on trough
1954      (what a pain)
1955    
1956    checkpoint57a_pre
1957    o some modifs in tools/build_options for sunos
1958    o call ctrl_pack for ctrl at end for optimcycle=0
1959    
1960    checkpoint57
1961    o add horizontal bi-harmonic viscosity for vertical velocity
1962      - new parameter viscA4W (defaults to viscA4)
1963      - affects only non-hydrostatic code
1964      - to be done: no-slip lateral boundary conditions
1965    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1966    o implement Implicit Vertical advection for pTracers
1967    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1968      (implemented also for implicit vertical diffusion & advection)
1969    o OBCS: extend application of tracer open boundary conditions
1970      to a strip beyond the boundary of width Olx/Oly
1971    o add call monitor to TAF set of required calls (flow directives)
1972      and include in natl_box_adjoint
1973    o untangle a few ifdefs related to cost, ctrl, autodiff
1974      untangel a few ALLOW_ECCO_OPTIMIZATION
1975    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1976      (theta2, salt2 in ecco_cost_weights)
1977    
1978    checkpoint56c_post
1979    o OBCS as control variables
1980      - update ctrl_ad_diff.list, obcs_ad_diff.list
1981      - remove balance of obcs controls from default
1982      - fix index bug nobcs in ctrl_init
1983      - fix dummy fields filen in ctrl_pack
1984      - add dummy weights for obcs
1985    o lsopt: comment out fort.94 output
1986    o optim:
1987      - remove unnecessary header files
1988      - adjusted namelists
1989      - add xerbla.F to Makefile
1990    o exf:
1991      - multiple modifications of exf_check_range
1992      - unit change in exf_init_runoff from [m/year] to [m/s]
1993    o mdsio:
1994      - i/o-vector change debugLevel from debLevA to debLevB
1995    
1996    checkpoint56b_post
1997    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1998      is called from DO_THE_MODEL_IO
1999      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2000      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2001      - clean up PTRACERS_WRITE_TIMEAVE a little
2002    o add another verification experiment that tests both the cfc-pkg and
2003      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2004      reactive tendencies treated inline with regular timestepping
2005    o testreport previously did a lousy job of comparing small numbers, so
2006      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2007      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2008      testreport.
2009    o ptracers_monitor: bug fix for MPI
2010    
2011    checkpoint56a_post
2012    o GCHEM: finish reorganizating the package
2013      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2014        (introduces another 3D-array for each passive tracer, but only if
2015        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2016        gchemTendency is not needed because the timestep is done separately)
2017      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2018      - GCHEM is now---more or less cleanly---separate from PTRACERS
2019      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2020        so clear to me how that should be done in a general way.
2021    o CFC: improve formatting of output in CFC_ATMOS
2022    o PTRACERS:
2023      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2024        that ALL experiments with ptracers enable can be checked. This makes
2025        GCHEM_MONITOR obsolete.
2026      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2027        monitorFreq
2028      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2029    o add PTRACERS (PTR0[1-5]) to testreport output
2030    o exf_check_range:
2031      * default changed to .TRUE.
2032      * will check values for niter0 if debLevA, every timestep if debLevB
2033      * STOP in exf_check_range if 'out of range'
2034      * range chosen generous to allow for potential extema
2035      TBD: a version with stricter range
2036           permitted range would be runtime parameters
2037    o GMredi:
2038      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2039      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2040      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2041    o GCHEM:
2042      - move call to GCHEM_FORCING_SEP, so that it is now called before
2043        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2044      - introduced a useGCHEM runtime flag and applied it everywhere.
2045      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2046        this flag is now only visible within GCHEM-pkg routines.
2047      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2048        be replaced by a 3D array that is computed before thermodynamics; for
2049        this, the tracer ID iTracer had to be included into the parameter list
2050        of ptracers_forcing
2051      - set up forward_step to call gchem_forcing, that will replace
2052        gchem_forcing_int in ptracers_forcing
2053      - cleaning up
2054    o small cleaning of exch2: remove files that are also in eesupp/src
2055    
2056    checkpoint56
2057    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2058    o mnc: cleanup "full" files--fixes out-of-memory problem
2059    o ECCO-GODAE
2060      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2061      * fully merged and updated from SIO code
2062        windstress sign change affects
2063        - exf_inscal_[u/v]stress
2064        - sign of xx_tau[u/v] adjustments
2065        - signs in cost_scat
2066      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2067      * natl_box_adjoint updated and compressed
2068      * 2-level checkpoint switch added
2069        (tested in EXP. 1 of natl_box_adjoint)
2070      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2071    o SVD
2072      * first complete, non-hacked version for SVD calculations
2073      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2074        performed via direct access files admtlm_vector.it????
2075        (via ctrl_[un]pack)
2076      * optimcycle is used for ARPACK iteration counter
2077        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2078      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2079        and add linear transforms where necessary
2080      * controls are initial/final SST, SSS (can be extended; need to check
2081        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2082    o mdsio: filename info to both stderr, stdout
2083    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2084      from sign change
2085    
2086    checkpoint55j_post
2087    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2088      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2089    o add consistent build directories and .cvsignore files to verification
2090    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2091    o make all subroutines 30 or less characters in length for certain older
2092      compilers to work (a thorough search only turns up two routines in
2093      pkg/ptracers)
2094    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2095      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2096    
2097    checkpoint55i_post
2098    o change arrays for total vertical diffusivity (2.D if explicit,
2099      3.D if implicit) ; each ptracer uses its own background value.
2100    o added mnc/NetCDF output capability to ocn_compon_interf
2101      - added bits to verification/cpl_aim+ocn so that it can run on
2102        ITRDA and other clusters without the mpirun "-wd" option
2103    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2104      configuration
2105    o give MNC the ability to create additional files rather than
2106      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2107      - the default is just less than 2GB which is a practical limit
2108        on many systems
2109    o Compute the non-local term using either KPP vertical diffusivity (=default)
2110       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2111    
2112    checkpoint55h_post
2113    o add verification test "vermix"
2114    o remove all the *_ioinc flags and replace with the single global
2115      outputTypesInclusive flag
2116    o allow to set a vertical profile of vertical diffusivity for T & S
2117    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2118    o useMNC moved from data.mnc to data.pkg
2119    
2120    checkpoint55g_post
2121    o Renaming carbon AD experiments to comply with testreport conventions
2122    o Updating adjoint of Held-Suarez hs94.1x64x5
2123    o Fixing directives for non-ECCO forward_step, after ECCO directives
2124      have been fixed to avoid recomp. of do_oceanic_phys
2125      Works well for global_ocean.90x40x15,
2126      but recomp. issue remains for carbon
2127    o Updating adjoint output for natl_box_adjoint after
2128      pkg/ecco has been modified (see taga c55d_post)
2129    
2130    checkpoint55f_post
2131    o rename to timeave_init_fixed
2132    
2133    checkpoint55e_post
2134    o some delicate re-shuffle of store directives to avoid one
2135      extra call of do_oceanic_physics
2136      affects ecco_the_main_loop.F, do_oceanic_physics.F
2137      checkpoint_lev1_directives.h
2138    o NB: this may break global_ocean adjoint temporarily,
2139      but it is clear how to fix it. Will do later, need this now.
2140    
2141    checkpoint55d_post
2142    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2143    o ecco_cost_weights is modified to 1x1 runs
2144    o modifs to allow observations to be read in as
2145      single file or yearly files
2146    o enable to read exf forcing fields as either
2147      single file or yearly files (flag useExfYearlyFields)
2148    checkpoint55d_pre
2149    
2150    o switch between 2-level and 3-level checkpointing
2151    o add ability of MNC to write local and "partial" (eg. 2D slices where
2152      the full 3D field is never actually stored) arrays to NetCDF files
2153      with the correct (that is, the complete multi-dimensional) set of
2154      array indicies
2155      - used in mom_vecinv() to write the diagFreq output
2156      - tested (demonstrated) in verification/aim.5l_cs
2157    o further mnc-ification
2158      - add verification/lab_sea to the list with mnc setups
2159      - fix undefined mnc v-names in cd_code
2160      - add kpp to mnc output (both snapshot and timeave)
2161    o non-hydrostatic code
2162      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2163        in calc_gw.F
2164      - defaults to viscAh
2165      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2166        friction or Leith) in non-hydrostatic mode, as long as there is
2167        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2168    o pkg/cost
2169      extend simple cost functions to treat time mean quantities
2170      (T,U,V) via cost_accumulate_state from cost_tile
2171    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2172        be 2 times larger than the minimum size the advection scheme requires.
2173        now get a perfect conservation of salt in advect_cs test-exp (updated)
2174    o GGL90 (Gaspar's TKE mixed layer)
2175      - add horizontal diffusion of TKE, requires exchanges in
2176        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2177        default. In OPA there is no horizontal diffusion of TKE but the
2178        mixing coefficients are computed from a horizontal average of TKE of
2179        6 points or so. I think that diffusion has a little more physical
2180        justification.
2181      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2182        was in vain)
2183      - mask tke-variable in ggl90_init
2184    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2185    o fix biharmonic diffusion on CS-grid.
2186    o more obcs stuff
2187      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2188        for reading boundary values. This routine is called from
2189        obcs_prescribe_read
2190      - updated obcs_check
2191      - changed sponge layer relaxation parameter units for days to seconds
2192      - turned off sponge layer by default
2193      - changed argument list of OBCS_CALC to myTime+deltaTclock
2194      - fixed about 35 bugs in obcs_external_fields_load
2195    
2196    checkpoint55c_post
2197    o obcs stuff
2198      - new runtime flags useOBCSprescribe, useOBCSbalance
2199      - re-arranged obcs_calc
2200      - moved exf_getobcs to obcs_prescibe_read
2201        obcs_prescibe_read is called after ORLANSKI stuff
2202        and independent of it (executable can contain all).
2203      - updated obcs_check
2204      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2205        These may be necessary only if tangential velocities are
2206        prescribed at OB, not sure, needs testing.
2207    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2208      which simplifies the calls and passes the ifc check-bounds test
2209    
2210    checkpoint55b_post
2211    o add a 2D scalar, Z location, exchange_2 routine.
2212    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2213      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2214      affects advect_cs results (for the wrong reason): update output.txt
2215    o use a more standard discretization for biharmonic viscosity ;
2216     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2217      affects results of dome set-up: update output.txt
2218    o fix gad_advection.F (CubedSphere part), back to version 1.23
2219    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2220    
2221    checkpoint55a_post
2222    o merged code to
2223      * prescribe/read time-dependent open boundaries
2224        (works in conjunction with exf, cal)
2225      * sponge layer code for open boundaries
2226      * each boundary N/S/E/W now has its own CPP option
2227        (healthy for the adjoint)
2228    
2229    checkpoint55
2230    o up-to-date adjoint of previous breaks
2231      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2232      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2233      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2234      - carbon: * remove tr1-related adjoint verification
2235                * add ptracer as control variable
2236    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2237      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2238    
2239    checkpoint54f_post
2240    o in verification/carbin/ remove experiment related to
2241      ALLOW_PASSIVE_TRACER (array tr1 etc)
2242      code_ad/ input_ad/ results_ad
2243    
2244    o add two new packages
2245      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2246        + subject to optimization (memory)
2247      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2248        + subject to reordering (many GOTOs in the original code)
2249        + so far opps is called for every (i,j) point, and then operates in
2250          the vertical; one may want to reorder the scheme in order operate in
2251          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2252          fields)
2253    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2254      - all verification tests compile and run with linux_ia32_g77
2255      - defaults are compatible with current input files--nothing
2256        should change if you were not previously using MNC
2257      - MNC output has been added in numerous places (eg. timeave)
2258        but there are still a few writes not yet do-able with MNC
2259        (this is in progress)
2260      - flags now allow for either/or/both use of MDSIO and MNC and
2261        documentation will soon follow
2262      - numerous small formatting cleanups for ProTeX
2263    o add version info (via BUILD_INFO.h) to MNC and stdout
2264    
2265    checkpoint54e_post
2266    o add two new packages
2267      - pp81 (Packanowski and Philander, 1981), Richardson number and
2268        stratification dependent mixing
2269      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2270      - these scheme operate in a similar manner as KPP (without ghat, of
2271        course), however there is only one diffusivity that is used for both
2272        temperature and salinity (and passive tracers)ç
2273    o add offline package
2274    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2275      provided by Stephanie Dutkiewicz
2276    o genmake2: add ability to search for C compilers and cleanup test output
2277      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2278    
2279    checkpoint54d_post
2280    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2281    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2282      leading to additional shift by 5 days each year of integration
2283       (i.e. leading to considerable offset over the years)
2284    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2285    o start with no AB and no initial filtering (staggerTimeStep):
2286      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2287    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2288      (external loading & cpl import/export stay in forward_step.F)
2289    o update coupling interface to work with new staggerTimeStep
2290    o change MDSIO ptracers_pickup.
2291    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2292    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2293    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2294    
2295    checkpoint54c_post
2296    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2297      this affects (truncation error) output.txt of test-exp:
2298       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2299    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2300    o change Qnet to always be the net heat flux, (+upward).
2301      affects (truncation error) output of natl_box exp.: updated
2302    o define the max number of passive tracers in PTRACERS_SIZE.h
2303    o start to test mnc routinely in exp0
2304    o add sea-ice loading (sIceLoad) as a new forcing field.
2305    
2306    checkpoint54b_post
2307    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2308       impressive on Altix and Opteron systems)
2309    o diagnostics can now write NetCDF files through the mnc package
2310    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2311    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2312    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2313      affects (truncation error) output of lab_sea & natl_box exp.: updated
2314    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2315    
2316    checkpoint54a_post
2317    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2318    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2319    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2320    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2321      + internal_wave (shift in writing cg2d_ini_res)
2322    checkpoint54a_pre
2323    
2324    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2325      - modified verification/lab_sea and natl_box_adjoint accordingly
2326    
2327    checkpoint54
2328    checkpoint53g_post
2329    o prepare splitting of thermodynamics: store convect.counter in common block
2330    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2331      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2332    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2333    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2334    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2335    o restore adjointability
2336    
2337    checkpoint53f_post
2338    o modifications that affect AIM experiment results (update output.txt):
2339      - no advection of S at top interface Nr (pkg/generic_advdiff)
2340      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2341    o AIM pkg:
2342      - include stability function into surf.Flux derivative relative to Tsurf
2343      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2344    
2345    checkpoint53e_post
2346    o merged cylindrical coord configuration
2347    o added rotating_tank experiment
2348    checkpoint53e_pre
2349    
2350    checkpoint53d_post
2351    o faulks upgraded: re-generate output.txt that have changed:
2352       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2353    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2354    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2355    o added Sadourny discretization of Coriolis
2356      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2357      - re-enabled use of omega3 (useAbsVorticity)
2358    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2359      vector-invariant equations
2360      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2361    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2362      hopefully without new bugs
2363      - still to do: biharmonic friction for non-hydrostatic w
2364    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2365    o regenerated output for global_ocean_ebm (using -ieee)
2366    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2367      of mom_common/
2368      - simple re-arrangement of instructions within computing loop
2369    checkpoint53d_pre
2370    
2371    checkpoint53c_post
2372    o new version of coupler for AIM+thSIce and Ocean models
2373     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2374     - land: change Evaporation of snow
2375     - aim with thSIce: fix bug in snow-precip.
2376    o changes to calc_gw.F
2377     - bug fix for w^2 term near the bottom boundary
2378     - (hopefully) improve the lateral slip boundary condtions for use with
2379        partial/looped cells
2380      - because the bug fix changes two verification experiments anyway (exp5
2381        and plume on slope), change the lateral boundary condition from half slip
2382        to the value of no_slip_sides
2383    o ebm package wasnt quite up to the parallel task. Fixed that.
2384    o Adjoint of EBM package + verification
2385      * TLM OK
2386      * ADM not sufficient accuracy yet (needs further testing)
2387    
2388    checkpoint53b_post
2389    o Commiting new energy balance model to repository
2390      * package is pkg/ebm
2391      * verif. is verification/global_ocean_ebm
2392      * references are in ebm_driver.F
2393    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2394    C        Global thermohaline circulation. Part I:
2395    C        Sensitivity to atmospheric moisture transport.
2396    C        J. Climate 12(1), 71-82
2397    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2398    C        Global thermohaline circulation. Part II:
2399    C        Sensitivity with interactive transport.
2400    C        J. Climate 12(1), 83-91
2401    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2402    C        Destabilization of the thermohaline circulation
2403    C        by atmospheric eddy transports.
2404    C        J. Climate 7(12), 1870-1882
2405    o Will need long integration testing.
2406    checkpoint53b_pre
2407    
2408    o created pkg/mom_common in preparation for variable viscosity code
2409    o renamed and split ini_mnc_io
2410    o pkg/land: only liquid water can diffuse or run-off
2411    o AIM using land: soil wetness availability account for snow
2412    o added printMapIncludesZeros to EEPARMS namelist
2413    
2414    checkpoint53a_post
2415    o restore TAMC compatiility for exf_constants.h
2416      (no usage of _d in .h)
2417    o Additional storing in KPP in an attempt to fix
2418      TAMC problem with adjoint of KPP code.
2419      (no success...)
2420      Identical code works fine with TAF.
2421    o Fixed verification/natl_box_adjoint experiments.
2422      Initial conditions for Experiments 4 and 5 are now
2423      set to "SEAICE_initialHEFF=0", which is more reasonable,
2424      and hence gives results closer to that of Experiment 2.
2425      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2426    
2427    checkpoint53
2428    o stable checkpoint with up to date adjoint
2429      TLM tests only run for 1st grdchk at the moment. Its unclear if
2430      this is a code problem or a problem with resetting code for g_
2431      variables that is being autogenerated wrong.
2432      Otherwise:
2433       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2434       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2435         are both still in chaos following their security messes.
2436    
2437    checkpoint52n_post
2438    o various build (mostly genmake2) changes including:
2439      - ability to build/run more easily within Cygwin and MacOS X
2440      - more complicated Makefiles with a stronger dependence on Gnu Make
2441    o pkg/seaice modifications
2442      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2443        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2444        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2445      - changed proxy for geostrophic velocity and updated
2446        verification/lab_sea/results/* accordingly
2447      - removed ADI dynamic solver from pkg/seaice
2448      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2449        they caused a segmentation fault under certain circumstances
2450      - removed unused field WATR
2451    o bug fix in exf-package:
2452      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2453         now reflect that.
2454    o small fixes in the cal-package:
2455      - set reference date to first of January for the 'model'-calendar
2456      - failing of cal_CheckDate in cal_FullDate now actually results in a
2457        warning
2458    o small modifications in exf-package to increase flexibility:
2459      - change climtempfreeze from a constant to a runtime parameter that
2460        is specified in data.exf_clim (default = -1.9)
2461      - introduce runtime parameter windstressmax (default = 2.0) that is
2462        specified in data.exf
2463    o fix in pkg/thsice:
2464      - update Evap (Tsf changes) to be consistent with Latent heat flux
2465      - maintain snow precipitation unchanged (even if Tsf >=0).
2466     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2467    
2468    checkpoint52m_post
2469    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2470      this does not change any of the results, because myIter=0 in swfrac always
2471      lead to jwtype=2 (the default anyway), but the call makes little sense
2472      as a default
2473    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2474    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2475      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2476    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2477    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2478    o extending useSingleCpuIO option to work with new exch2 I/O format
2479      - old-style, missing-tile I/O is still accessible by defining CPP
2480        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2481    o monitor package can write to NetCDF files and/or STDOUT
2482    o fix re-definition bug in MNC_GRID_INIT_ALL()
2483    o doc/api_reference added
2484      - a framework for building an API Reference Manual using all
2485        the "protex" comments embedded in the code
2486      - see pkg/generic_advdiff, pkg/mnc for examples
2487    o MNC:
2488      - make myThid the last argument for all subroutines
2489      - new default for the grid files: NO halos
2490      - add useMNC and other run-time flags
2491      - separate per-file-group handling of the unlimited dimension
2492      - early initialization of MNC w/ flags read at the eeboot stage
2493        and lookup tables set in initialize_fixed
2494      - write all MNC output to a freshly-created directory
2495    o thermodynamics sea-ice (thsice) is now tested with testreport.
2496    o test exp. advect_cs: use the standard cs32 grid ; update output.
2497    o Added functionality to grdchk:
2498      pick global i,j,k position (or nearest wet) where to perform check.
2499    
2500    checkpoint52l_post
2501    o new land formulation:
2502      a) use ground enthalpy as prognostic variable to ensure exact
2503         energy conservation.
2504      b) account for water temperature and for latent heat of freezing
2505         in all processes (rain, run-off, ground storage)
2506      c) compute surface and ground temperature implicitly.
2507    o aim_v23 modification for new land model:
2508      a) Treat separately land / ocean / sea-ice surface fluxes
2509         to allow implicit computation of land & sea-ice surface temp.
2510      b) add snow precipitation.
2511    checkpoint52l_pre
2512    
2513    o fix problem (when 1 tile is empty) in min/max monitor.
2514    o fix bug in timeAve (u,vZetatave in common block)
2515    o no restoring terms under ice for pkg/seaice
2516    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2517    o bug fix for pkg/seaice pickups
2518    o change MNC call locations and add coordinate attributes
2519    o mask vorticity at the corner ; affects global_ocean.cs output
2520    o fix ini_curvilinear_grid ; test CS experiments with mpi
2521    o aim.5l_cs: modify sea-ice fraction input file ; update output
2522    o exf: Adding simple range check routine for exf fields after read
2523    
2524    checkpoint52k_post
2525    o removed top-level directory "diags"
2526      - we migrated these functions to pkg/timeave a long time ago
2527    o fixed bug introduced in pkg/monitor
2528    o accuracy ctrlprec = 32 insuffient for gradient checks using
2529      averaged fields (I/O via cost_averages)
2530      -> use ctrl.h in active_file*.F to control I/O precision.
2531    o paramter list of CALL ADTHE_MAIN_LOOP
2532    o added initial do_the_model_io to ecco
2533    o set all ...Freq to zero after cost_final
2534      taveFreq, dumpFreq, pChkptFreq
2535    o MAIN and ECCO differentiability restored
2536    
2537    checkpoint52j_post
2538    o fix nchklev in tamc.h for global_ocean...
2539    o Bringing flow and store directives up-to-date
2540    o Really weird thing!
2541      call do_the_model_io from the_main_loop with parameters
2542      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2543      TAF places a faulty re-call of initialise_varia
2544      after cost_final call which should not be there!
2545    checkpoint52j_pre
2546    
2547    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2548      error messages
2549    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2550    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2551      debug output
2552    o modfied mdsio_writefield.F to handle non-global files under exch2
2553    o update AIM Cubed-Sphere exp (aim.5l_cs):
2554      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2555    o update AIM Equatorial Channel exp:
2556      use standard aim_v23 pkg and change the SST fields to be more realistic.
2557    o globalFile now works with exch2
2558    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2559      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2560    o limit timeave output for hi-res integrations
2561    
2562    checkpoint52i_post
2563    o removed CPP_EEOPTIONS.h from verification/*/code
2564    o updated the tiling for global_ocean_pressure
2565    checkpoint52i_pre
2566    
2567    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2568      the old pkg/aim).
2569    
2570    checkpoint52h_pre
2571    o shortened offending lines in exch2_send_rx?.template
2572    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2573    o genmake2: add build & execute test for NetCDF code
2574    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2575      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2576    o added useSingleCPUIO flag to monitor.F and mon_out.F
2577    o added temporary hack for sea-ice dynamics on the cube:
2578      metric terms are ignored and it is assumed that
2579      there is no sea-ice on cube faces 1, 2, 4, and 5.
2580    
2581    checkpoint52f_post
2582    o added exch2 cube routines to pkg/exch2
2583    o modified hs94.cs-32x32x5 to use it
2584    o added new grid files to hs94.cs-32x32x5
2585    checkpoint52f_pre
2586    
2587    checkpoint52e_post
2588    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2589      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2590    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2591      to work with implicit vertical advection and AB ;
2592    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2593    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2594     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2595    checkpoint52e_pre
2596    
2597    o fix bug in impldiff when Nr=1 or Nr=2.
2598    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2599    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2600    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2601      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2602    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2603    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2604    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2605    
2606    checkpoint52d_post
2607    o re-tiled many expts to allow comparison in multi-processor mode
2608      - updated output accordingly
2609      - changed hs94.128x64x5 to use intial T from file rather than use the
2610        random number generator
2611    o add infrastructure in model routines for fizhi and gridalt packages
2612    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2613    o changes to permit hi-res, cubed-sphere, configuration
2614      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2615      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2616      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2617        of surface winds for the cube
2618      (A verification experiment, based on global_ocean.cs32x15, but with
2619       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2620       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2621       complete with example surface forcing files and matlab scripts to look
2622       at the output and compare it with that of global_ocean.cs32x15.)
2623    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2624       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2625       to conform to the common rule.
2626    o check-in the first version of the coupler + interfaces for multi-components
2627       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2628       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2629       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2630       - ocean and atmos. share the same horizontal grid (no interpolation).
2631       - exchanges between component and coupler is done in forward_step
2632    o new verification experiment, cpl_aim+ocn:
2633       coupled ocean - AIM atmosphere on cs32 grid.
2634    
2635    checkpoint52d_pre
2636    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2637    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2638    
2639    checkpoint52c_post
2640    o Fixing OPTIONS files for use of exf:
2641      - ALLOW_ECCO not needed
2642      - ECCO_CPPOPTIONS.h should not be included from
2643        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2644        as has been the case in the past
2645      - All cal/exf related options are currently set in
2646        single header file. Should remain so until we
2647        agree on a consistent new policy.
2648    o Removed all CPP options for cal package.
2649      cal has no more CPP options.
2650    o modified STOREs in GAD_ADVECTION
2651    o corrected key comp. for passkey
2652    
2653    checkpoint52b_post
2654    o new version: "thsice" of thermodynamic sea-ice pkg:
2655     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2656     - modify fluxes but do not change theta directly;
2657     - light cleaning of bulk_force pkg (still needed with thsice).
2658     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2659       + output_thsice.txt to test thsice & bulk_force pkgs.
2660    o put back grid & coriolis monitor output.
2661    checkpoint52b_pre
2662    
2663    o call "do_the_model_io" at the beginning (=> dump initial state)
2664    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2665    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2666      (need info on NUMBER_OF_PTRACERS)
2667    o missing PTRACERS headers in some routines
2668    o default tamc.h in pkg/autodiff supposed to crash
2669      to ensure proper customization
2670    
2671    checkpoint52a_post
2672    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2673      - moved surfaceTendencyTice from pkg/seaice to main code
2674      - subroutine FREEZE_SURFACE now limits only surface temperature
2675        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2676        => new output.txt for global_ocean.cs32x15 & global_with_exf
2677      - keep the old version of FREEZE for backward compatibility;
2678        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2679      - corresponding modifs for TAF directives
2680    o added surface flux output variables to TIMEAVE_STATVARS
2681    o time-averaged output for pkg/ptracers
2682    o fix problem with ECCO-related divided adjoint
2683      snapshot file was missing some ad-variables,
2684      but no warning issued by TAF
2685    
2686    checkpoint52a_pre
2687    o some bug fixes for #undef REAL4_IS_SLOW
2688    
2689    checkpoint52 = ecco_c52_e35
2690    o after testing adjoints of checkpoint51u_post
2691    
2692    checkpoint51u_post
2693    o this is the post-merge tag of the ecco-branch
2694      (needs another clean checkout and re-testing)
2695    o various natl_box_adjoint configs and results
2696      but no input fields
2697    o obcs adjoint not yet merged!
2698    o adding ECCO global 1x1 and 2x2 degree configs
2699    o updated/extended some store directives for seaice
2700    o pkg/ecco now containes ecco-specific part of cost function
2701    o top level routines the_main_loop, forward_step
2702      supersede those in model/src/
2703      previous input data.cost now in data.ecco
2704      (new namelist ecco_cost_nml)
2705    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2706    
2707    checkpoint51t_post
2708    o this is the pre-merge tag of the ecco-branch
2709    
2710    checkpoint51s_post
2711    o cleanup: removed various obsolete #define-s
2712    o pkg/grdchk
2713      - renamed 'ph-grd 3' to 'grad-res'
2714      - merged from ecco-branch
2715        (remaining bug fixes for obcs gradient checks)
2716      - additional high-precision output for testreport
2717        (grep for 'precision_grdchk_result')
2718    
2719    checkpoint51r_post
2720    o cleaned up or removed CPP_OPTIONS.h files
2721    o updated results for some of the tests to reflect the new
2722      optfiles (-ieee: -O0 instead of -O3)
2723    
2724    checkpoint51q_post
2725    o cd_code:
2726      - moved cd_scheme.F -> cd_code_scheme.F
2727      - separate read_checkpoint from cd_code_ini_vars.F
2728      - separated cd_code part from write_checkpoint
2729      - updated AD_SOURCE, generated .flow
2730      - added CD_CODE_VARS.h to the_main_loop
2731      - Moving cd_code specific store dir.s to pkg/cd_code
2732    o ctrl package totally restructured
2733      - pack/unpack now optional and decoupled from
2734        xx_/adxx_ I/O
2735      - ctrl_pack/unpack cleaned
2736        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2737      - confined inclusion of AD_CONFIG.h to where necessary.
2738    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2739    
2740    checkpoint51p_post
2741    o create initial cd_code package
2742      - WARNING: the initialization of fields within packages
2743        is broken because INI_FIELDS (where READ_CHECKPOINT is
2744        called) is called *before* PACKAGES_INIT_VARIABLES.
2745        This seems to be backwards since
2746        1) its important to initially zero the entire field including
2747           the "halo" region
2748        2) zeroing needs to be done *before* reading pickup info
2749           and the pickup call might or might not happen in any
2750           particular run
2751      - this needs an overhaul for R2
2752    o cleanup verification/*/code/GMREDI_OPTIONS.h
2753    o cleanup testreport
2754    
2755    checkpoint51o_post
2756    o bringing AD-related verif's up to date with genmake2
2757      - carbon/
2758      - global_ocean.90x40x15/
2759      - hs.94.1x64x5/
2760      - (front_relax/ )
2761    o (more) consistent directory structure for AD-related verif.'s
2762    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2763    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2764    o bug fix in find_alpha.F for MDJWF:
2765      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2766        change rho -> rho-rhoConst
2767      - replace call find_rho to find_rhonum
2768    o initialisation of rFlx extended to full array (required by TAF)
2769      and shifted to thermodynamics
2770    o removed PTRACERS.h in ptracers routine
2771    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2772    o Correcting initialisations for fVerU, fVerV.
2773    o helping TAF to recognize dependency on kUp for
2774      fVerU, fVerV
2775    o Replacing delZ by delR in pkg/ctrl/
2776    checkpoint51o_pre
2777    
2778    o undid all of cp51 pending some cleanups and discussion
2779    o added the [#include "AD_CONFIG.h"] statement to all files that need
2780       it for adjoint/tl #defines
2781     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2782     o removed tools/genmake since it no longer works
2783    
2784    checkpoint51n_post
2785    o modifications to make FREEZE flux visible to pkg/kpp
2786      - moved surfaceTendencyTice from pkg/seaice to main code
2787      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2788      - subroutine FREEZE now limits only surface temperature
2789        (this means new output.txt for global_ocean.90x40x15,
2790         global_ocean.cs32x15, and global_with_exf)
2791    o added surface flux output variables to TIMEAVE_STATVARS
2792    
2793    checkpoint51n_pre
2794    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2795    o added [#include "AD_CONFIG.h"] to all files that use the following
2796      defines:
2797      - ALLOW_ADJOINT_RUN
2798      - ALLOW_TANGENTLINEAR_RUN
2799      - ALLOW_ECCO_OPTIMIZATION
2800    
2801    checkpoint51m_post
2802    o incorporating changes to get TAMC/TAF working in genmake2
2803      - added new TAMC/TAF targets to the Makefile
2804      - various cleanups related to package handling
2805      - these changes should have no impact on the forward model
2806    
2807    checkpoint51l_post
2808    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2809     - faster algorithm for cal_addtime.F
2810     - higher precision arithmetic, where needed
2811     - pkg/exf *startdate variables changed from calendar date to
2812       model integration time
2813    
2814    checkpoint51l_pre
2815    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2816    o enable to apply restoring on S & T only in a latitude band.
2817    o update output (external_forcing_surf modif. change truncation errors)
2818       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2819    
2820    checkpoint51k_post
2821    o change default to: useNHMTerms=.FALSE.
2822     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2823       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2824     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2825        exp1, ideal_2D_oce
2826     - change data file of oceanic exp (leave the results unchanged for now)
2827       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2828    o set gravitySign automatically according to the vertical coordinate used
2829      (and change sign: back to "logical" value: +1 when R increases downward)
2830    o added an include barrier to the default CPP_OPTIONS.h and
2831      removed the #include "PACKAGES_CONFIG.h" from it
2832    o fix a bug in mom_fluxform (from chk51j_post)
2833    
2834    checkpoint51j_post
2835    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2836    o adjusted some flow directives (dynamics, thermodynamics)
2837    o added cubed-sphere case to test cost function
2838    o heckpoint_lev?_directives.h now include
2839      pkg-specific directives, whenever those are enabled.
2840    o Moving pkg-specific flow directives to corresponding pkg
2841      Moving pkg-specific differentiation list to corresponding pkg
2842      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2843      ---> conventions are
2844           - pkg_ad.flow
2845           - pkg_ad_diff.list
2846           - pkg_ad_check_lev?_dir.h
2847    
2848    checkpoint51i_post
2849    o merge of the branch-genmake2
2850      - knowingly breaks the older genmake
2851      - automatic generation of all ALLOW_${PKG_NAME} defines
2852      - new testreport supersedes older testscript
2853    o large number of package inclusion and header cleanups
2854    checkpoint51i_pre
2855    
2856    o new output for adjoin of global ocean vector invariant
2857    o fix for checkpoint of thermodynamic seaice and bulk_force
2858    o Steph gchem various cleanups
2859    
2860    checkpoint 51h_pre
2861    o fixed some single quotes
2862    o modify gchem pkg to be more versatile
2863    o modifications to clean up dic pkg
2864    o add pkg/cfc
2865    
2866    checkpoint51g_post
2867    o provide links for ARPACK and ADM*TLM
2868    o start removing verification/vero/
2869    o update AD-related stuff
2870      (in particular some IF-statements in model/src/ routines)
2871    o adding to verification/global_ocean.90x40x15/ adjoint of
2872      vector invariant setup
2873    
2874    checkpoint51f_post
2875    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2876    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2877      of tracer Green's fucntions for ocean inversion project.
2878    
2879    checkpoint51f_pre
2880    o Added on-the-fly spatial interpolation capability
2881        "USE_EXF_INTERPOLATION" to pkg/exf.
2882      - This is a temporary Cartesian-grid hack until
2883        the super-duper ESMF coupler becomes available.
2884      - See verification/global_with_exf/README for usage example.
2885      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2886        flags and modified pkg/seaice accordingly.
2887    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2888        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2889        non-local transport term.
2890    
2891    checkpoint51e_post
2892    o pkg/mom_vecinv:
2893      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2894      - add time-ave diagnostic of vorticity advection.
2895    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2896    o atmospheric geopotential: - include water vapor effect;
2897                                - use p^kappa in p* scaling.
2898    o land pkg: read initial state from files.
2899    o AIM : add stratospheric drag in the upper level
2900    
2901    checkpoint51d_post
2902    o change function ILNBLNK (=> last non-blank char.) to return zero
2903      (instead of the string length) when the string. char is empty
2904    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2905    o modif's to restore TAMC compatibility
2906      - avoid "_d" constructs in PARAMETER declarations
2907      - avoid interrupting lines by comment lines
2908    o Use cluster local disks for purely local I/O
2909      vs. globally visible disks needed for ctrl stuff
2910      (merged from ecco-branch)
2911      - new active_file_loc... and mdsio_..._loc routines
2912      - affected packages: autodiff, ctrl, grdchk, mdsio
2913    
2914    checkpoint51c_post
2915    o introducing integer flag debugLevel
2916      - debLevZero: suppress all output
2917      - debLevA: standard
2918      - debLevB: equivalent to current debugMode=.TRUE.
2919    o introducing pathname variable mdsioLocalDir for mdsio
2920      that can be specified at runtime
2921      (relevant for cluster I/O to local disk)
2922    `
2923    >>>checkpoint51b_post
2924    adjoint of ptracers
2925    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2926    o extended state in checkpoint_lev?, etc.
2927    o alternative ctrl/cost with tr1 or ptracer
2928    o new comlev1_bibj_ptracers
2929    o new ptracers.flow
2930    o made ptracers_forcing same as external_forcing_s
2931    o added verification for adjoint with ptracers
2932      - adm. grdchk fail so far
2933      - tlm. grdchk OK
2934      - checked tapelev/comlev recomputations: OK
2935    <<<checkpoint51b_pre
2936    
2937    checkpoint51a_post
2938    o added code for biogeochemistry package
2939      - new pkgs: dic, gchem
2940      - new subroutine in ptracers
2941    o modify code for biogeo packages
2942      - in model/src and pkg/ptracers
2943    
2944    checkpoint51
2945    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2946      - autodiff, ctrl, exf, grdchk, seaice
2947      kept separate packages
2948      - cost, ecco, obcs
2949    o updating verification/internal_wave, verification/lab_sea
2950      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2951    
2952    checkpoint50i_post
2953    o Preparing next differentiable checkpoint and sync
2954      of MAIN vs. ecco-branch
2955      - 1st step: this one is differentiable
2956      - 2nd step: next(! not this) checkpoint will have updated packages
2957                  from ecco-branch)
2958    
2959    checkpoint50h_post
2960    o new package "land": provide surface BC for AIM.
2961    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2962    o AIM: use true log-P extrapolation for near surface temp (= as in
2963        F.Molteni paper) ; update aim.5l_cs output.
2964    o New variable in PARM03 for more flexible pickups
2965    o somewhat cleaned package initialisation sequence for
2966      ctrl/ cost/ ecco/ in packages_... routines
2967    
2968    checkpoint50g_post
2969    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2970      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2971      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2972        made the default because of faster convergence than ADI
2973    
2974    checkpoint50f_post
2975    o exf totally restructured
2976      - replaced all exf_set_ routines by one generic exf_set_gen.F
2977        and made sure it's still differentiable
2978      - split exf_getffields.F into new exf_bulkformulae.F
2979      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2980      - updated adjoint/makefile and relevant verif. accordingly
2981    
2982    checkpoint50f_pre
2983     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2984          + change Evap over land. (update aim.5l_cs output)
2985     o added missing .cvsignores and made uniform across expts
2986     o changed configuration of tidal_basin_2d expt
2987     o added pkg/debug functions for tracing code in fatal crashes
2988     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2989     o new fn in pkg/monitor to stop model if solution grows too big
2990     o removed lots of single quotes from comments
2991    
2992    checkpoint50e_post
2993    o make KPP work with PTRACERS
2994     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2995       nearly a copy of kpp_transport_s
2996     - there is no analogue to SurfaceTendencyS, so I have to use
2997       gPtr(of the surface layer) instead
2998    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2999    checkpoint50e_pre
3000    
3001    checkpoint50d_post
3002    o change kpp output from multiple-record state files to single-record state
3003      files analogous to write_state.F
3004    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
3005      analogous to the cg2d-related output.
3006    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
3007      so that writing to internal file fn (with length 512) fails.
3008    checkpoint50d_pre
3009    
3010    checkpoint50c_post
3011    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
3012    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
3013    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
3014    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
3015    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
3016    
3017    checkpoint50c_pre
3018    Merging from release1_p13:
3019    o bug fix for pkg/seaice dynamic solver
3020    o Added SEAICE_initialHEFF to pkg/seaice
3021    
3022    checkpoint50b_post
3023    o store u*,v* in gU,V instead of in guNm1,gvNm1
3024    o in order to put the momForcing out of the Adams-Bashforth:
3025      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
3026      to timestep.F
3027    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
3028    o re-generate output for highly sensitive test-exp:
3029       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
3030    
3031    checkpoint50b_pre
3032    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
3033    o corrected CPP option mismatch in exf_Bulk... functions for case
3034      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
3035    
3036    checkpoint50a_post
3037    o Bug fix for merging between c50 and KPP.
3038      ikey was passed from thermodynamics to kpp_calc via
3039      common block rather than being recomputed in kpp_calc,
3040      in contradiction with new key itdkey.
3041      New key ikppkey created, and tamc.h headers updated.
3042    
3043    checkpoint50
3044    - 2nd step of merge with ecco-branch:
3045      merge changes in ecco-branch back into main trunk
3046    - bug fix in find_alpha
3047    - more storing in gmredi_calc_tensor.F, kpp_routines.F
3048    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
3049    - merged some sliced AD support routines
3050    
3051    checkpoint49
3052    merged from ecco-branch:
3053    o exf:
3054      - Enable initialisation of forcing fields to constant
3055        (runtime) values.
3056      - in exf_getffields.F
3057        Reduce i-/j-loop to interior domain, discarding overlaps.
3058        That also fixes wrong TAF-key computations for key_1, key_2
3059        with bulf formulae.
3060      - exf_init.F modify #ifdef for exf_init_evap
3061      - exf_getffieldrec.F, ctrl_getrec.F
3062        The following INT-usages are not safe:
3063          fldsecs  = int(fldsecs/fldperiod)*fldperiod
3064          fldcount = int(fldsecs/fldperiod) + 1
3065        and were modified.
3066    o autodiff: checkpoint_lev...
3067      - updated storing for bulk formulae (some arrays were missing)
3068      - added state for seaice package
3069      - synchronized with main branch
3070    o DIVA:
3071      Modif.s in
3072      - the_main_loop.F
3073      - the_model_main.F
3074      and added cost_final_restore.F cost_final_store.F
3075      o With these changes, it is possible to fully separate
3076        the first forward run to compute the cost function (mdthe_main_loop)
3077        and adjoint runs over individual DIVA intervals (adthe_main_loop)
3078        into separate model executions.
3079        This enables better tuning of DIVA to given queue sizes.
3080      o Loss of cost function value in consecutive DIVA runs is
3081        fixed by storing to 'costfinal' file.
3082      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
3083        beginning/end of adjoint integration is accounted for.
3084      The current changes apply to TAF-1.4.26.
3085      TAF has one remaining bug, requiring one manual change
3086      (see MITgcm manual).
3087    o cal: synchronized between MAIN and ecco-branch
3088    
3089    checkpoint48i_post
3090    o Changes to restore differentiability of code w.r.t. previous tag
3091      (mostly adding new routines to make list and replacing
3092      pressure by totPhiHyd).
3093    o Updated and merged grdchk package
3094      - has both ADM and TLM checks
3095      - works for single- and multi-proc.
3096      - output cleaned
3097      - worked successfully for parallel DIVA
3098    o genmake:
3099      - Adding -platform=SP4
3100      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
3101    o Modif. for DIVA:
3102      ctrl_unpack should not be called in intermediate DIVA interval.
3103      (similar thing would apply for active files such as
3104      tbar, sbar, psbar, which should not be reinitialised;
3105      only relevant for ecco-branch)
3106    
3107    checkpoint48h_post
3108    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
3109    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
3110    o Added SEAICE_initialHEFF to pkg/seaice
3111    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
3112    
3113    checkpoint48g_post
3114    --- EOS:
3115    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
3116      store total Potential in totPhyHyd for diagnostics & EOS.
3117    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
3118    --- Pressure/geopotential gradient:
3119    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
3120    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
3121      ( changes results of global_ocean_pressure )
3122    o NLFS + z-coord.: add eta*Rho' contribution.
3123    o accurate phiHyd when using interface-W at the middle between 2 centers
3124     ( changes results of ideal_2D_oce )
3125    o includes r* 2nd term in potential gradient.
3126    
3127    checkpoint48f_post
3128    Merging from release1_p12:
3129    o Modifications for using pkg/exf with pkg/seaice
3130      - improved description of the various forcing configurations
3131      - added basic radiation bulk formulae to pkg/exf
3132      - units/sign fix for evap computation in exf_getffields.F
3133      - updated verification/global_with_exf/results/output.txt
3134    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
3135      (SBO) core products, including oceanic mass, center-of-mass,
3136      angular, and bottom pressure (see pkg/sbo/README.sbo).
3137    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
3138      to avoid negative values in shallow regions.
3139      - updated verification/natl_box/results/output.txt
3140      - updated verification/lab_sea/results/output.txt
3141    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
3142    o Added useSingleCpuIO option (see PARAMS.h).
3143    o Updated useSingleCpuIO option in mdsio_writefield.F to
3144      work with multi-field files, e.g., for single-file pickup.
3145    o pkg/seaice:
3146      - bug fix in growth.F: QNET for no shortwave case
3147      - added HeffFile for specifying initial sea-ice thickness
3148      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
3149    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
3150      kpp_transport_t.F, forward_step.F, and the_main_loop.F
3151    o pkg/seaice:
3152      - adjoint-friendly modifications
3153      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
3154    
3155    checkpoint48e_post
3156    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
3157    o dynamics: change definition of computational domain & adapt mom_fluxform
3158      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
3159    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
3160        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
3161        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
3162        global_ocean.90x40x15 global_with_exf global_ocean_pressure
3163        inverted_barometer solid-body.cs-32x32x1
3164      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
3165    
3166    checkpoint48d_post
3167    o in preparation for r*:
3168     a) use pre-computed gradient of hydrostatic potential:
3169        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
3170     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
3171        => affects results of glob_oce_pressure (different truncation error)  
3172      update output.txt of ideal_2D_oce & global_ocean_pressure
3173    
3174    checkpoint48d_pre
3175    o in preparation for r*:
3176      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
3177      pass the 2 comp. of the grad. as arguments to momentum S/R.
3178      but for the moment, only used if it does not change the results.
3179    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
3180    
3181    checkpoint48c_post
3182    Modifications in treatment of initial flux forcing controls
3183    to avoid extra storing of flux fields.
3184    
3185    checkpoint48c_pre
3186    o Added tidal_basin_2d experiment (currently 1D!)
3187    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3188    
3189    checkpoint48b_post
3190    o r* coordinate added in #ifdef NONLIN_FRSURF block.
3191     (modification to pressure gradient not yet implemented)
3192    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
3193      (for U & V) that are used for vertical advection of momentum.
3194    
3195    checkpoint48a_post
3196    o In preparation for r*, use temp. array to compute vertical transport
3197       in flux-form momentum pkg. => change results of few test-exp.
3198      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
3199                        lab_sea, natl_box & plume_on_slope
3200    
3201    checkpoint48
3202    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
3203    
3204    checkpoint47j_post
3205    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
3206    o moved adexch from forward_step to addummy_in_stepping
3207    o added exch in ctrl_map_...
3208    o aveFreq.=0. at end of cost_final to avoid overwrite in
3209      reverse checkpointing loop
3210    o Yet more changes in gmredi:
3211      * adgmredi_calc_tensor
3212        avoiding all recomputation of gmredi_slope_limit
3213      * adgmredi_x/y/rtransport
3214        added flag for excessive storing to avoid recomp. of
3215        u/v/rtans, dTdx/y/z
3216        -> this is not really necessary and very memory-consuming
3217      * adgmredi_slope_psi:
3218        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
3219      * gmredi_slope_limit
3220        re-activated full calculation of taperfct for case 'ac02'
3221    o updating verification/ adjoints of carbon, global_ocean.90x40x15
3222    
3223    checkpoint47i_post
3224    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
3225    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
3226      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
3227    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
3228    o gmredi: fix few bugs.
3229    
3230    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
3231    This will be a good checkpoint to plug into the ecco-branch.
3232    o few modif.'s to get latest version adjointed
3233      (mainly kick out code in ini_linear_phisurf)
3234    o modif's to run adjoint with exactConserv
3235    o case GM_BOLUS_ADVEC should be cleaned
3236      S/R gmredi_slope_psi should be cleaned
3237    o verification/carbon now has exactConserv=.TRUE.
3238    
3239    checkpoint47g_post
3240    o time-average AIM output: becomes independent from statvars time-average
3241      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
3242    o After TAF bug fix:
3243      Tested adjoint of gmredi package.
3244      Tests were done with checkpoint47 rather than with latest
3245      checkpoint47f_post since the latter is broken for the adjoint
3246      verification/carbon/ contains both ADM and TLM gradient checks.
3247    Here they are, before they get changed/lost/stolen.
3248    Mostly modif.'s to fix numerical sensitivities.
3249    Gradient checks OK for
3250    - GM_taper_scheme:
3251      * clipping
3252      * ac02
3253      * linear
3254      * glw91
3255      * dm95
3256      * ldd97
3257    - GMREDI_OPTIONS:
3258      * GM_VISBECK_VARIABLE_K
3259      * GM_NON_UNITY_DIAGONAL
3260      * GM_EXTRA_DIAGONAL
3261      * GM_BOLUS_ADVEC
3262    in conjunction with data.gmredi parameters to be checked in
3263    in a few minutes under verification/carbon/code/
3264    
3265    checkpoint47f_post
3266    Merging from release1_p10:
3267    o modifications for using pkg/exf with pkg/seaice
3268      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
3269        and SEAICE_EXTERNAL_FLUXES
3270      - pkg/exf CPP options EXF_READ_EVAP and
3271        EXF_NO_BULK_COMPUTATIONS
3272      - usage examples are Experiments 8 and 9 in
3273        verification/lab_sea/README
3274      - verification/lab_sea default experiment now uses
3275        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
3276    
3277    checkpoint47e_post
3278    o created a tag prior to creating a branch
3279    
3280    checkpoint47d_post
3281    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
3282      at the bottom boundary had an erroneous half slip boundary condition
3283    o added bottom drag and no slip boundary condition capabilities to
3284      oceanic pressure coordinates code
3285    o added new verification experiment global_ocean_pressure, this experiment is
3286      also described in the tutorial section of the manual
3287    checkpoint47d_pre
3288    
3289    checkpoint47c_post
3290    o Added a verification experiment for a global cubed-sphere ocean run
3291      -  verification/global_ocean.cubed32x32x30
3292      -  uses pkg/therm_seaice and pkg/bulk_forcing
3293    
3294    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
3295    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
3296      when using P-coordinate; only implemented for atmospheric config.
3297    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
3298      NOTES: requires option NONLIN_FRSURF to be "#define".
3299    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3300    
3301    checkpoint47b_post
3302    Merging from release1_p9:
3303    o pkg/seaice
3304      - removed GOTO's and added taf directives
3305      - double precision constants to reduce the g77 (Linux)
3306        to F77 (SGI) differences reported in release1_p8
3307    o tools/genmake
3308      - added SGI options
3309    o verification/testscript
3310      - updated to that of checkpoint47a_post
3311    o verification/global_ocean.90x40x15/input/eedata
3312      - modified for SGI f77 compatibility
3313    o verification/lab_sea
3314      - added description of sea-ice model
3315      - added missing matlab routines
3316      - added test of thermodynamics parallelization
3317    
3318    checkpoint47a_post
3319    o new pkg: aim_v23
3320     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3321       for now, keep the same surface forcing as before.
3322     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3323     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3324     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3325    o add diagnostic of surface correction term in monitor output
3326    
3327    o bulk_force and therm_seaice
3328    - Two packages:  bulk_force (Bulk forcing)
3329      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3330    - Earlier integration from Stephaine Dutkiewicz
3331      and Patrick Heimbach.
3332    - Two ifdef statements for compile time,
3333       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3334    
3335    checkpoint47
3336    differentiable version of checkpoint46n_post
3337    o bug fix in quasihydrostaticterms
3338    o * "clean" adjoint code (in terms of extensive recomputations)
3339        can now be obtained for all GMREDI options (i.e. for
3340        - GM_VISBECK_VARIABLE_K
3341        - GM_NON_UNITY_DIAGONAL
3342        - GM_EXTRA_DIAGONAL
3343        - GM_BOLUS_ADVEC )
3344      * However, wrong gradient check problem remains unsolved.
3345      * New CPP options have been introduced for different
3346        tapering schemes
3347    o external_fields_load now part of differentiation list
3348    o pressure needs multiple storing;
3349      would be nice to have store_pressure at beginning or
3350      end of forward_step, e.g. by having phiHyd global (5-dim.)
3351      (NB: pressure is needed for certain cases in find_rho,
3352      which is also invoked through convective_adjustment).
3353    o recomputations in find_rho for cases
3354     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3355    o #define ATMOSPHERIC_LOADING should be differentiable
3356    o ini_forcing shifted to begining of initialise_varia
3357    o Incorporating QNVS line search routines into MITgcm
3358      (this is separate code, and therefore not under pkg)
3359      lsopt/, optim/
3360    o Updated verification/carbon/
3361      - #define GM_VISBECK_VARIABLE_K
3362      - GM_taper_scheme    = 'ldd97'    
3363    
3364    checkpoint46n_post
3365    Merging from release1_p8:
3366    o verification/natl_box:
3367      updating new external_fields_load routine
3368    o New package: pkg/seaice
3369      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3370      The sea-ice code is based on Hibler (1979-1980).
3371      Two sea-ice dynamic solvers, ADI and LSR, are included.
3372      In addition to computing prognostic sea-ice variables and diagnosing
3373      the forcing/external data fields that drive the ocean model,
3374      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3375      The implied surface heat flux is then stored in variable
3376      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3377      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3378      non-local transport term.  Because this call precedes model
3379      thermodynamics, temperature under sea-ice may not be "exactly" at
3380      the freezing point by the time theta is dumped or time-averaged.
3381      N.B.: fairly large differences in accuracy occur across
3382            different platforms/compilers; comparison between
3383            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3384            generated output gives:
3385       T           S           U           V
3386      C D M    c        m  s        m  s        m  s        m  s
3387      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3388      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3389      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3390    
3391      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3392    o GAD:
3393      - generated new common blocks to account for call of
3394        same gad routines with differing traceridentities
3395        (needed to modify tracerIdentity indices in GAD.h)
3396      - generated separate common blocks for case useCubedSphereExchange
3397        (Department of Futurology)
3398      - parameter lists to gmredi_?transport: added tracerIdentity
3399      - added new key indices to tamc.h
3400    o external_fields_load:
3401      - added this routine to TAF list
3402      - needed to make some common blocks global and additional storing
3403        along the same lines as exf package (checkpoint_lev?_directives.h)
3404    o exf:
3405      updated external forcing package
3406      - bug fixes carried over from ecco-branch
3407        (missing OBCS_OPTIONS.h in two routines)
3408      - enable easy to use "no forcing".
3409      - added exf I/O for atmospheric loading
3410      - added exf I/O for runoff data
3411      - transfered scaling between exf <-> MITgcm to exf namelist
3412    o Adding new verification experiment global_with_exf.
3413      This verification experiment is almost identical to the
3414      global_ocean.90x40x15 experiment, except that it uses
3415      the exf (and cal) package instead of the
3416      external_fields_load routine (cf README file).
3417    
3418    checkpoint46m_post
3419    o modified testscript to return -- when there are no lines of "%MON" output
3420    o added new flag "quasiHydrostatic" for QH mode
3421      and new routine quasihydrostaticterms()
3422    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3423      New routine: mom_u_coriolis_nh()
3424    o fixed sign of non-hydrostatic metric terms in u and v equations.
3425      Depend on correct sign of gravitySign.
3426    o added work.pc* to .cvsignore in aim directories using ifc
3427    o introduced flag for controllin non-hydrostatic metric terms
3428    o removed gravitySign from PARM04
3429    o switched to g77/ifc from pgf77 in aim experiments
3430    
3431    checkpoint46l_post
3432    o made convective adjustment work with pressure coordinates:
3433     - changed the direction of k-loop in convective_adjustment.F for the
3434       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3435     - adjusted the reference pressure k-index in convective_adjustment.F
3436     - adjusted the convection condition in convect.F (in analogy to
3437       calc_ivdc.F)
3438     - convective_adjustment no longer computes anything on the halos
3439     - removed the warnings about negative salinity from find_rho.F and
3440       find_alpha.F; instead the new routine look_for_neg_salinity, called
3441       at the beginning of find_rho, find_alpha, and find_beta, does a
3442       check of the entire slice, if CPP-option
3443       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3444    checkpoint46l_pre
3445    
3446    checkpoint46k_post
3447    o fixed the verification/global_ocean.90x40x15 experiment:
3448     - new bathymetry (the world according to A., JMC, and M.)
3449     - new initial fields and forcing fields (*.bin files)
3450     - new POLY3.COEFFS (for the next release one should switch to a full
3451       equation of state: JMD95P or MDJWF)
3452     - fixed several errors and redundancies in the data file
3453     - experiment uses looped cells
3454     - added matlab directory with diagnostic scripts for plotting of output
3455    
3456    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3457     - read AIM physics parameters from a file (data.aimphys)
3458     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3459    
3460    checkpoint46j_post
3461    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3462    o move wVel computation at the end of the time step, in S/R integr_continuity
3463    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3464    o update timeave pkg for wVel diagnostic.
3465    checkpoint46j_pre
3466    
3467    checkpoint46i_post
3468    o Clean up AIM package (and keep the results unchanged):
3469      include CPP_OPTION and use IMPLICT NONE in all routines ;
3470      declare all the variables _RL ; use _d 0 for all numerical constants.
3471      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3472    
3473    checkpoint46h_post
3474    o cleaned up the use of rhoNil and rhoConst.
3475      - rhoNil should only appear in the LINEAR equation of state, everywhere
3476        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3477        and the dynamical equations are all divided by rhoConst
3478    o introduced new parameter rhoConstFresh, a reference density of fresh
3479      water, to remove the fresh water flux's dependence on rhoNil. The default
3480      value is 999.8 kg/m^3
3481    o cleanup up external_forcing.F and external_forcing_surf.F
3482      - can now be used by both OCEANIC and OCEANICP
3483    checkpoint46h_pre
3484    
3485     Added code to convert surface volume flux (fresh water) into
3486     a mass flux when using P coordinates in the ocean (OCEANICP).
3487     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3488    
3489    checkpoint46g_post
3490    o Include a new diagnostic variable phiHydLow for the ocean model
3491      - in z-coordinates, it is the bottom pressure anomaly
3492      - in p-coordinates, it is the sea surface elevation
3493      - in both cases, these variable have global drift, reflecting the mass
3494        drift in z-coordinates and the volume drift in p-coordinates
3495      - included time averaging for phiHydLow, be aware of the drift!
3496    o depth-dependent computation of Bo_surf for pressure coordinates
3497      in the ocean (buoyancyRelation='OCEANICP')
3498      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3499        Theta, Salinity, and Pressure in the parameter list. This routine is
3500        presently contained in find_rho.F. This routine does not give the
3501        correct density for 'POLY3', which would be a z-dependent reference
3502        density.
3503    o cleaned up find_rho
3504      - removed obsolete 'eqn' from the parameter list.
3505    o added two new verification experiments: gop and goz
3506      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3507    checkpoint46g_pre
3508    
3509    checkpoint46f_post
3510    o Enable tangent linear (forward mode) gradient checks:
3511      - extended active file handling to g_... files
3512      - added TANGENT_SIMULATION to theSimulationMode
3513      - extended grdchk package accordingly
3514    o added tangent linear setup in verification/carbon/code_ftl
3515    o added adjoint setup in verification/front_relax/code_ad
3516    
3517    checkpoint46e_post
3518    o Added new equation of state -> MDJWF
3519      - EOS of McDougall et al., 2002, JAOT, submitted
3520      - caveat: the equation of state is only valid for a smaller (more
3521        realistic?) range of values than JMD95P/Z and UNESCO
3522      - added masks to the calculation of pressure in store_pressure
3523      - added more check values for density in check_eos (ini_eos.F), some of
3524        the old check values are out of the range of the MDJWF-eos, so don't
3525        expect perfect matches for those
3526    checkpoint46e_pre
3527    
3528    checkpoint46d_post
3529    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3530      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3531      case of pressure coordinates. eosType='JMD95Z' in
3532      combination with buoyancyRelation='OCEANICP' now causes an error.
3533    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3534      in find_alpha/beta.
3535    checkpoint46d_pre
3536    
3537    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3538      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3539    
3540    checkpoint46c_post
3541    o Changes necessary for ocean in p-coordinates
3542     -  Added new buoyancy relation = 'OCEANICP'
3543     -  Added new parameters = gravitySign (this used to be contained inside
3544        the factor dRdZ which I added when we first switched to R coordinates).
3545     X GM/Redi is not compatible (yet)
3546     X bottom drag and no-slip need to be debugged.
3547    checkpoint46c_pre
3548    
3549    checkpoint46b_post
3550    o Added new equation of state -> JMD95Z and JMD95P
3551      - EOS of Jackett and McDougall, 1995, JAOT
3552      - moved all EOS parameters into EOS.h
3553      - new routines ini_eos.F, store_pressure.F
3554    o Added UNESCO EOS, but not recommended because it requires
3555      in-situ temperature (see JMD95)
3556    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3557      unesco.f to be used with POLY3
3558    checkpoint46b_pre
3559    
3560    checkpoint46a_post
3561    o Added (atmospheric) pressure loading
3562      - new field in FFIELDS.h, etc...
3563      - new cpp flag ATMOSPHERIC_LOADING
3564    o Changed hFacC to _hFacC in calc_phi_hyd.F
3565    o Added SHORTWAVE_HEATING to some files for consistency
3566    checkpoint46a_pre
3567    
3568    checkpoint46
3569    further merges from release1_p5
3570    o new ctrl package
3571      - adopted from ECCO environment to enable optimization
3572      - added Eliassen Palm fluxes to controls
3573    o added Eliassen Palm flux controls to gradient check package
3574    o cost package
3575      - Compatible with new ctrl package
3576      - added Eliassen Palm cost hooks
3577      - modif's of existing cost functions
3578    o Adjoint-related bug fixes in kpp:
3579      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3580      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3581    o autodiff package
3582      - flow directives:
3583        + new for S/R do_the_model_io
3584        + enhanced for S/R checkpoint
3585        + new gmredi.flow
3586      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3587        disable adcommon.h/g_common.h by default.
3588      - fixed problem for adjoint of global_max
3589    o modified verification/carbon/
3590    o New setup for adjoint of global_ocean
3591    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3592    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3593    o incorporated hooks for sponge layer code (external_forcing.F)
3594    
3595    checkpoint45d_post
3596    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3597    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3598      (affects plume_on_slope "cg2d" output)
3599    o add new parameter deltaTfreesurf for free-surface time stepping
3600    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3601    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3602    o change phiMin in exp1 (to agree with documentation)
3603    o add new flags:
3604     - T,S forcing inside/outside Adams-Bashforth
3605     - turn off temp,salt advection and/or forcing
3606     - for each tracer, define internal flag for multiDimAdvection & A-B
3607    o monitor: change definition of KE to check conservation of Energy
3608    
3609    checkpoint45c_post
3610    o Removed f90 comments ("!")
3611    o Modified initialisations to enable exf package for MITgcm
3612      (without invoking ECCO_PACKAGE).
3613    o modifications to gradient check package (Martin Losch)
3614      - enable centered differences
3615      - modified format of standard output
3616    
3617    checkpoint45b_post
3618    o cleaned exchange calls in cg2d
3619    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
3620    o included CPP option SINGLE_LAYER_MODE in thermodynamics
3621      to configure barotropic setup (Martin Losch)
3622    o moved some initialisations within bi,bj loop in dynamics
3623      (TAF flow dependency)
3624    o in initialise_varia, moved call packages_init_variables
3625      before convective_adjustment_init
3626      (corresponding adjustment of TAF tape initialisation).
3627    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
3628    
3629    checkpoint45a_post
3630    o compute Rho over the whole domain (extend iMin,jMin indices)
3631    o specific exchange for X-slice domain (case Ny=1)
3632    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
3633    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
3634    
3635    checkpoint44h_post = checkpoint45
3636    o Fix to restore differentiability:
3637      place at which packages_init_variables is called in
3638      initialise_varia is crucial for reverse control flow.
3639    o modifications in GMRedi to enable stable adjoint
3640      (corresponding modif's in thermodynamics, dynamics)
3641    o added missing hook for sponge layer code in external_forcing
3642    o modified test cost functions
3643    o storing in gad_advection (plus removal of write(0,*)!
3644    o missing headers TR1.h added in convective_adjustment routines
3645    o errorMessageUnit set non-equal zero in eeboot
3646      (conflict on some platforms, e.g. IBM SP3)
3647    o modified carbon verif.
3648    
3649    checkpoint44h_pre
3650    o vertical grid option: allow to put the Interface at the middle between
3651      2 cell-centers ; replace delZ in pkg/kpp by drF.
3652    o GM Advective form: Tracers are advected using the residual transport (=
3653      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
3654    
3655    checkpoint44g_post
3656    o fix surface correction term in multiDimAdvection (affects plume_on_slope
3657      results) ; ifdef missing in thermodynamics.F
3658    
3659    checkpoint44f_pre,checkpoint44f_post
3660    o added PTRACERS package
3661      This allows an arbitrary number of passive tracers to be integrated
3662      forward simultaneously with the dynamicaly model.
3663      + Implemented so far:
3664        - basic forward algorithm (time-stepping, advection, diffusion, convection)
3665        - I/O and checkpointing
3666        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
3667      + Not implemented so far:
3668        - KPP
3669        - OBCS
3670      + No specific example supplied (yet) but global_ocean.90x40x15 has the
3671        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
3672        line in data.pkg.
3673      + This package is disabled by default since it increases storage.
3674    
3675    
3676    o testscript: added -cleanup option
3677    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
3678                 b) enable to filter 2D fields.
3679    
3680    checkpoint44e_pre,post
3681    o re-wrote convective adjustment to use pre-calculated weights
3682      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
3683      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
3684      Original calls to convect() still in place.
3685    
3686    chkpt44d_pre,post
3687    o added missing EXCLUDE_MONITOR flags
3688    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
3689      (incompatible typ in MIN/MAX expressions caused problems
3690      on IBM SP3)
3691    o in genmake added variable MAKEDEPEND
3692      plus resetting for case SunOS
3693    o added timer_stats.c routine for IBM SP3
3694    o removed variables in dynamics
3695    !!! I forgot to create tag chkpt44d_pre !!!
3696    !!! But chkpt44d_pre = chkpt44c_post    !!!
3697    
3698    o real fresh water flux implemented with non-linear free-surface.
3699    
3700    chkpt44c_pre,post
3701    o few fix (mask in shap_s2, EmPmR in external_field_load,
3702      USE_NATURAL_BCS in solve_for_P);
3703    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
3704    
3705    checkpoint44b_pre/_post
3706    o merge of relevant stuff from the ecco-branch:
3707      - genmake: removed $S64 overwrite for case SunOS
3708      - pkg/exf: update and corrections for field swapping and obcs
3709      - pkg/ecco: parameter lists for the_model_main, the_main_loop
3710                  harmonized between ECCO and MITgcm
3711      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
3712                      updated checkpointing_lev... lists for obcs
3713      - model/src: minor changes in forward_step, plot_field
3714                   added directive for divided adjoint in the_main_loop
3715      - pkg/mdsio: added mdsio_gl_slice
3716    
3717    o check parameters & config (chkpt44a_pre,post)
3718    o OBC and NonLin_FrSurf.
3719    
3720    checkpoint44
3721    o fix bug in mom_vi_del2uv
3722    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
3723    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
3724    o update AIM experiments (NCEP input files)
3725    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
3726    o added some stuff for AD
3727    
3728    checkpoint43
3729    o added two new advection tests
3730    o added global 4x4 degree ocean test
3731    o added test of H&S94 with free surface on cube
3732    o some final mods for gradient check, adjoint,...
3733    
3734    checkpoint42
3735      Fixed AD-related problems:
3736    o Store directives up-to-date with re-arranged Adams-Bashforth
3737      (mainly thermodynamics.F)
3738    o New store directives for multi-dim. advection schemes
3739      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
3740      * new common block and key passkey
3741      (mainly gad_advection.F)
3742    o Modified store directives for split of dynamics/thermodynamics
3743      for the case ALLOW_KPP
3744    o Cleaned argument list for timestep_tracer.F
3745    
3746    checkpoint41
3747    o re-formatted/added comments in prologues of key subroutines
3748      to work with protex
3749    
3750    checkpoint40
3751    o moved calc_gs, calc_gt and calc_tr1 back to model/src
3752    o added FLT (floats) package from Arne along with demo. experiment
3753    o re-arranged Adams-Bashforth scheme for tracers to allow easier
3754      implementation of forward-in-time forcing terms
3755    o more mods for non-linear free-surface including new variable
3756    o modified multi-dim method to work on cube
3757    o bug fix in KPP (from DM)
3758    
3759    checkpoint40pre9
3760    o added DST advection schemes
3761    o fix MPI bug on SGI's
3762    o modifications for non-linear free-surface
3763    o fixed conditionals for fixed flow/passive tracer only mode
3764    o added tension/strain form of stress tensor
3765    o changes to commenting of arguments for TAF/TAMC
3766    o added/updated many matlab scripts
3767    o added multi-dimensional advection method for tracers
3768      
3769    checkpoint40pre8
3770    o new package rw/
3771      Added method for dumping intermediate local arrays:
3772      mdsio_writetile - same as mdsio_writefield except works from inside
3773                        bi,bj loop
3774      mdsio_writelocal - same as mdsio_writetile except works for local
3775                         arrays
3776      write_local_r? - higher-level wrapper for mdsio_writelocal
3777      Controlled by diagFreq. Defaults to zero (ie. no dumps)
3778      Example given at end of mom_vecinv.F that dumps some local arrays.
3779    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
3780      control flux-form versus vector invariant code.
3781      Switch is runtime flag vectorInvariantMomentum (defaults to false)
3782      or genmake -DISABLE ...
3783    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
3784      (additional storing is now needed for case vecinv;
3785      currently nothing implemented to switch this storing off
3786      in case fluxform is used since no CPP flag available).
3787    
3788    checkpoint40pre7
3789    o bug fix in dynamics.F
3790      calc_viscosity called before k=1,Nr loop.
3791    o added some #ifdef's ALLOW_PASSIVE_TRACER
3792    o cleaned initialisations in ctrl_map_ini
3793      related to TAF
3794    
3795    checkpoint40pre6
3796    o split dynamics into thermodynamics & dynamics
3797    o corresponding split of calc_diffusivity into
3798      calc_diffusivity, calc_viscosity
3799      (kpp_calc_diff, kpp_calc_visc).
3800    o Added diffkr, kapgm to control variables
3801    o bug fix in gmredi_slope_limit for ldd97
3802    
3803    checkpoint40pre5
3804    o proper initialization of Adams-Bashforth time stepping
3805      + uses forward step for very first step of model (iter=0)
3806    o re-generated *all* output since almost all output is modified by this
3807      change (sorry but we've been putting this one off for about 2 years)
3808      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
3809        *not* regenerated since they are already out of date and I don't
3810        want to create the impression that they are suddenly working.
3811    o removed KAP stuff for DEC's
3812    o modified/added many .cvsignore files in */code and */input
3813    o added new expt "solid-body.cs-32x32x1"
3814      + this uses an alternative form of ini_curvilinear_grid.F which
3815        is not necessarily any better than the current one...
3816    
3817    checkpoint40pre4
3818    o added re-initialisations of utrans,vtrans,rtrans in
3819      calc_common_factors which are crucial for TAF.
3820    o extended iMin,jMin range for calc_common_factors,
3821      calc_diffusivity
3822    o added option ALLOW_PASSIVE_TRACER
3823    o a few minor updates and fixes
3824    
3825    checkpoint40pre3
3826    o created calc_gtr1.F for gad package
3827    o split the_main_loop and re-introduced forward_step
3828    o some recomputations of nIter0 for TAMC
3829    
3830    checkpoint40pre2
3831    o Updated to latest branch of AJA, JMC
3832    o Added gradient check package
3833    o Added routines for passive tracer handling
3834    o Added carbon sequestration sensitivity experiment
3835    
3836    checkpoint39
3837     o Modifications and fixes to support TAMC
3838       (mainly missing or wrong directives)
3839     o Corrected common blocks when fooling TAMC to produce adjoint I/O
3840       in addummy_in_stepping
3841     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
3842     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
3843     o Included following packages:
3844       cal: calendar
3845       exf: external forcing
3846       ecco: essential routines to control use of cal, exf
3847             (NB: this is not the full ECCO environment)
3848     o disabled some packages by default in genmake
3849    
3850  checkpoint38  checkpoint38
3851   o see notes_c37_adj.txt   o see notes_c37_adj.txt
3852   o corrected wrong layer index in external_forcing_t   o corrected wrong layer index in external_forcing_t

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