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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.1059 by jmc, Sun Feb 1 22:37:40 2009 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7  o adding precip control xx_precip  o pkg/flt:
8  o moved ptracer ctrl index 17 -> 32   - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
9       init_fixed & ini_varia.
10     - clean-up & simplify linear interpolation S/R:
11       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
12     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
13    o pkg/ggl90: a few modifications:
14     - fix bottom boundary condition, and interpolation of KappaE
15       near top and bottom
16     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
17     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
18     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
19    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
20      (maintain temporary backward compatibility, until next checkpoint)
21    
22    checkpoint61h
23    o pkg/diagnostics with "periodic averaging diagnostics":
24      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
25    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
26    o pkg/obcs: fix loop ranges for balancing code
27    o pkg/flt:
28     - improve criteria for finding which tile owns a float.
29     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
30    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
31      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
32      with ocean biogeo)
33    o pkg/flt:
34     - do some cleaning and fix the restart ;
35     - add output.txt in flt_example/results to get this pkg tested.
36    o genmake2: add an EXTENDED_SRC option and flag.
37       for now, cannot be turned on on command line (only through genmake_local)
38    o pkg/mdsio: read/write vector:
39     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
40     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
41       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
42     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
43      (drop to 4 digits matching for grad). But this test does not look very
44      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
45    
46    checkpoint61g
47    o pkg/flt:
48      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
49       + make OPTIONS file more standard.
50      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
51      - fix _BYTESWAPIO CPP-Flag
52      - standard reading of file-parameter "data.flt"
53      - fix argument list of S/R FLT_RESTART
54      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
55    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
56    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
57      a still unfixed compiler/optimization bug
58    
59    checkpoint61f
60    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
61      update results of global_ocean.cs32x15.icedyn test.
62    o move getcon.F from model/src to pkg/fizhi.
63    o pkg/exf: add parameter for extrapolation of temp up to the surface
64       and option to prevent negative evap (in bulk_largeyeager04 only).
65    o Prather Advection scheme: fix tracer conservation for divergent flow
66      (e.g., when using NonLin Free-Surface).
67    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
68    o gmredi (Visbeck-variable-K):
69     - add more parameters to Visbeck-variable-K.
70     - use a 5 points average for dSigmaR in Visbeck-K calculation
71       (more "homogenous": same stencil and same weights as in dSigmaH)
72     - update output of ideal_2D_oce experiment.
73    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
74      (#undef REAL4_IS_SLOW)
75     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
76       coordinate variable
77     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
78       (surface forcing fields), removes some of the functionality
79     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
80     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
81       probably not all: copy _RS surface flux fields to RL field before
82       calling DIAGNOSTICS_FILL
83     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
84       real*4 (CALL EXCH_*_RS) versions.
85     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
86       (generate new output).
87    
88    checkpoint61e
89    o gmredi (Visbeck-variable-K):
90      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
91      - change computation of Visbeck-K where Slope > Smax :        
92        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
93        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
94    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
95      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
96    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
97    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
98      does not become too large (to avoid precision problems in implicit-diffusion
99      solver); update ideal_2D_oce output.
100    o pkg ggl90:
101      - in ggl90_cal.F: compute only one set of visc/diff, used to
102        step forward TKE/T/S/momentum
103      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
104        have Prandlt =1)
105    o gmredi (fm07):
106      - add lower limit on Transition layer thickness + lower limit on 1/lambda
107      - allow to set few more params from data.gmredi
108    o pkg ggl90:
109          - add missing sqrt(2) factor in computation of mixing length
110            scale in ggl90_calc.F
111            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
112    
113    checkpoint61d
114    o adjoint modifs
115      - adapt to new field rhoInSitu
116      - allow to revert from StoreDynVars2D, StoreDynVars3D
117        to individual fields
118        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
119    o store 3-D (in-situ) density in commom block (DYNVARS.h)
120     - save 1 rho computation.
121     - no longer modify T & S inland when using down_slope pkg.
122    o gad_som : allow to switch to SOM advection for T & S without corresponding
123      pickup files (using new S/R: MDS_CHECK4FILE).
124    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
125      (for useSingleCpuIO to work in multi-threaded)
126    o pkg/shelfice:
127     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
128       with SHELFICEtopoFile in data.shelfice
129     - move code for reading ice shelf topography and modifying hFacC into separate
130       subroutines of the shelfice package
131     - separate initialisation of "fixed" and "variable" variables
132     - kTopC is not (yet) replaced by kSurfC, although this is possible
133    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
134    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
135      and rename:
136      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
137      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
138    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
139    
140    checkpoint61c
141    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
142      to add mass source/sink of fluid in the interior (3-D generalisation
143      of oceanic real-fresh water flux).
144    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
145    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
146    o new pkg: down_slope
147      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
148      - presently, modify T & S inland (dwnslp_calc_rho.F).
149        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
150      - implementation for ocean in P-coords not tested.
151      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
152    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
153      (to facilitate conversion of oceanic pkg to p-coordinate).
154    o change FIND_RHO to FIND_RHO_2D :
155      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
156    o new pkg: cheapaml
157    
158    checkpoint61b
159    o exch2:
160      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
161      - no longer depend on the order sequence (N,S,E,W).
162      - 3rd exchange no longer needed (tested with 24 tiles).
163      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
164      - exch_UV_A-grid readily available (but not yet tested).
165      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
166      (both are no longer needed) in exch_uv: no effect in forward run; but
167       get truncation error differences with adjoint exch.
168    o exch2:
169     - change index-bounds storage (moved from target to local tile,
170       more intuitive this way) ; rename/remove some variables.
171     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
172    
173    checkpoint61a
174    o exch2/matlab-topology-generator:
175      fix bug in index bounds for N-S internal exchange (hard to tell if this
176      had any effect on the solution).
177    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
178      is exceeded
179    o testreport: modify syntax of awk, so that it works also with
180      awk, and not only with nawk and gawk
181    
182    checkpoint61
183    o autodiff
184      Change default for TAF usage by removing argument '-nonew_arg'
185      This changes TAF subroutine argument list (ordering of active var.)
186      Omission of this flag leads to incompatibility w.r.t. TAMC
187      To restore TAMC-compatibility, need following modifs:
188      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
189      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
190      Tested TAF version is 1.9.22
191      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
192    
193    checkpoint60
194    --->>> This is the last checkpoint for which generating the adjoint
195    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
196    --->>> by default.
197    --->>> Future checkpoints will ommit this flag by default.
198    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
199    o pkg/grdchk: Add gradient check to etan0 perturbations.
200    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
201    o pkg/autodiff: more flexibility in zeroadj.
202      model/src: modifying do_oceanic_phys.F accordingly.
203    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
204    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
205      special setup of gmredi for which the adjoint is stable
206      enough for parameter optimization.
207    o bridging the gap between eddy stress and GM.
208      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
209          along with a change in CPP option (now ALLOW_EDDYPSI).
210      -> when using GM w/ GM_AdvForm:
211          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
212          is applied either in the tracer Eq. or in momentum Eq.
213          depending on data.gmredi (intro. GM_InMomAsStress).
214      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
215      The key modifications are in model/src/taueddy_external_forcing.F
216      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
217    
218    checkpoint59r
219    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
220      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
221      fix option to read coriolis(@ cell-corner) from files with CS-grid.
222    o pkg/mnc: add some attributes to standard 1D-coordinate variables
223    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
224      mass points, when using mnc for output
225      - add runtime parameter (missing_value, missing_value_int) to override
226        default (which is the value of getcon('UNDEF'))
227    o pkg/mnc: prepare mnc for the actual use of missing values with the
228      diagnostics package: small fix in mnc_cw_readwrite.template and more
229      initialisation of never used fields
230      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
231      versions
232    o pkg/thsice/thsice_ini_vars.F added default initial values so that
233      thermodynamics sea ice solver does not blow up when some initial fields
234      are missing.
235    o move from external_forcing_surf.F to ini_forcing.F
236      the p-coord. hack consisting in using pLoad to set phi0surf ;
237      update output of tutorial_global_oce_in_p (affected @ truncation level).
238    o Freshen up a bit hs94.1x64x5, notably:
239      remove rotationPeriod and tRef=5*0. (adjoint only), and add
240      exactConserv=.TRUE.
241    o pkg/generic_advdiff:
242      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
243      applies to files where Temperature & Salinity 2nd Order moments are used.
244    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
245      this uses a dynamically allocated internal state data structure
246      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
247      and requires a fortran 90 compiler
248    
249    checkpoint59q
250    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
251       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
252    o Refresh tutorial_global_oce_biogeo, notably:
253      - change bathymetry (put back seamounts in ACC, use hFacs)
254      - change EOS (POLY3 --> JMD95Z)
255      - use Bryan-Lewis vertical diffusivity
256      - use multidimensional advection
257      - remove old virtual virtual in dic pkg, now done through ptracer pkg
258      - change a couple of parameters in dic pkg
259    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
260    o pkg/obcs: change default to OBCSfixTopo = .true.,
261      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
262      - replace "debugMode" with "debugLevel .GE. debLevB"
263    o implementation of TAF directives for gchem,cfc,dic
264    o remove "exp5" (replaced by tutorial_deep_convection).
265    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
266      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
267      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
268      --> changes results in exp4, seaice_obcs
269    o tutorial_deep_convection :
270      update the set-up and increase resolution and domain size ; start
271      from pseudo initial conditions = output at t=120mn in order to see
272      something happening when running testreport.
273    o pkg/seaice: add os7mp as an advection scheme
274                  add check for advection schemes
275                  add a flag for restoring T and S underneath sea ice
276    o pkg/my82: add netcdf-support and diagnostics
277    o thsice pkg:
278      - Now hsMax limits snow height by turning it into ice following
279        flooding scheme (and now conserving energy)
280      - Slight rewriting of the formula in thsice_calc_thick.F
281      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
282      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
283    
284    checkpoint59p
285    o gchem / dic / cfc :
286      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
287      - add new parameter files: "data.dic" & "data.cfc" ;
288      - various re-arrangement in initialisation & header file ;
289      - fix tutorial_global_oce_biogeo for multi-threaded test.
290    o pkg/dic: test for "pickup_dic" file when restarting ;
291      if no pickup-file, can restart with a re-initialised pH (same as it did
292      before) providing pickupStrictlyMatch is set to False.
293    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
294      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
295    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
296      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
297    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
298     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
299       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
300    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
301       scheme to use for vorticty-term ;
302     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
303       (with default selectVortScheme, return to original discretisation)
304     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
305    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
306    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
307      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
308      also fix diagnostics VISCAHW & VISCA4W.
309    
310    checkpoint59o
311    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
312    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
313      move a few statemens out the main loop into separate loops
314    o pkg/shelfice:
315      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
316        (kg/m^2/s), does not break tests, because in verification/isomip,
317        rhoConstFresh=rhoConst (by accident)
318      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
319      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
320        new file model/src/seawater.F, so that they are available for all pkgs.
321      - convert potential temperature into in-situ temperature. This changes the
322        isomip tests => update tests
323    o add a flag writePickupAtEnd (default=true) to be able to suppress
324      writing a pickup at the last timestep
325    o tools/mpack-1.6 :
326      - disable automake (not working) and autoconf (not needed).
327      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
328        also cleaner with much less compilation warnings.
329    o pkg/profiles:
330      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
331      (for "less than 32 characters name" compiler requirement)
332    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
333      conditions that have a different sampling frequency than S/T/U/V obcs
334    o pkg/diagnostics (stats-diags):
335      - fix global Min/Max in case 1 processor get only empty tiles
336    o genmake2: replace (4 times)
337         make genmake_tc_1.o >> genmake_warnings 2>&1
338      with
339         COMM="$CC $CFLAGS -c genmake_tc_1.c"
340         echo $COMM >> genmake_warnings
341         $COMM >> genmake_warnings 2>&1
342      to make genmake2 always see the value of CC as specified in the optfile.
343    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
344      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
345      - modify verification advect_cs test to test SOM-advection on CS-grid.
346    o pkg/ctrl:
347      - Rewrite of ctrl_map_ini_ecco.F,
348        introducing a generic routine (ctrl_map_ini_gen.F).
349      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
350    
351    checkpoint59n
352    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
353      number in dedicate array "hdiag":
354      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
355        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
356      - many small changes (integer format) for large number of diagnostics
357      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
358        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
359    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
360      usingSphericalGrid, this allows to define the rotated grid coordinates
361      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
362      geographical coordinates according to the inverse of the rotation defined
363      by the Euler angles, so that Coriolis parameter and online-interpolation by
364      exf works with the geographical coordinates on XC/YC/XG/YG.
365      Naturally, this feature does not work with all packages, so some
366      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
367      profiles), because there the coordinates are assumed to be regular
368      spherical grid coordinates.
369    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
370      - introduce isopycnal diffusion coefficient control.
371    o tools/adjoint_options:
372      - additional control vector components.
373    o pkg/mnc: have mnc create marginally meaning full coordinate variables
374      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
375    o pkg/mypackage:
376      - add example of read/write pickup for state-var ;
377      - add entry points to the main code for state-vars diags & write-pickup.
378    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
379      transitions for useExfYearlyFields
380      - add new subroutine that determines the file to read from for
381        use*YearlyFields = .TRUE. and .FALSE.
382      - add a verification experiment to global_with_exf that tests
383        useExfYearlyFields with USE_EXF_INTERPOLATION defined
384    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
385      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
386      subroutines (which could be generated from a template, because they are
387      almost identical), for now they are included in obcs_prescribe_read.F for
388      simplicity
389    o pkg/exf:
390      - add a little more diagnostic to exf_interp_read (in analogy to
391        mds_read_field, can be turned off with debugLevel < debugLevA=1)
392      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
393        ugly but fast by unrolling short inner loops, inserting a unroll=8
394        directive in routine lagran, and splitting a loop and making do while the
395        outermost loop (the latter requires the intoduction of index arrays)
396    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
397    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
398      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
399    o verification/seaice_obcs: updated for restart test and latest options
400    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
401      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
402      for now this is only available for the C-grid code and also within
403      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
404    
405    checkpoint59m
406    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
407      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
408    o gad_som : fix flux output (& diagnostics) to have same units as other  
409      advection scheme fluxes (was previously multiplied by deltaT).  
410    o added verification/seaice_obcs both to test seaice open boundaries
411      and to provide an example matlab scrpt for generating them
412    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
413    o pkg/salt_plume: clean up salt_plume_frac.F to
414      remove redundancy in PlumeMethod 1 and 4
415    o pkg/kpp: added saltplume diagnostics
416    o pkg/obcs and pkg/seaice:
417      - do not set uice and vice to zero when OB*icefile are unspecified
418      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
419      - moved seaice tracer obcs after call to seaice_growth
420    o pkg/salt_plume: added various options for salt plume depth
421      criterion and for vertical distribution of the salt
422    
423    checkpoint59l
424    o pkg/ptracers: new version of ptracers pickup:
425      read meta file and write only fields which are needed to restart.
426      ( same logic as main pickup file ; also using pickupStrictlyMatch )
427    o pkg/seaice:
428      - add timescale for melting due to warm mixed layer as a means of
429        setting SEAICE_availHeatFrac more conveniently
430      - add a CPP-flag/runtime parameter check for flooding algorithm
431      - reformulated availHeat in seaice_growth.F to be independent of AREA
432    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
433      unit changes
434    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
435    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
436      SX vector computer.
437    o pkg/seaice:
438      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
439        seaice forcing fields can now be read only through pkg/exf
440      - removed some unused halos
441    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
442    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
443      or U/VICE from U/VWIND before computing U/VSTRESS
444    
445    checkpoint59k
446    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
447      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
448    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
449      all experiments pass when compile with un-initialised var. checking option.
450    o added pkg/salt_plume
451    o script to test restart (for now, in MITgcm_contrib/jmc_script)
452    o pkg/seaice: new read/write pickup version.
453      read meta file and write only fields which are needed to restart.
454      ( same logic as main pickup file ; also using pickupStrictlyMatch )
455    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
456    o lab_sea.hb87: modify the domain & update output.hb87.txt :
457      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
458      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
459      process. Fixed here by closing the domain at the Northern boundary.
460    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
461    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
462      a set of consecutive levels in/from a 3-D array.
463    o pkg/ptracers:
464      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
465      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
466    
467    checkpoint59j
468    o in pkgs: dic, obcs, offline, rbcs:
469      standard way to compute coeff. for time interpolation between 2 time reccords
470      which retains full precision (& make results less dependent on compiler).
471      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
472    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
473      packages instead of reading ice cover and wind speed separately
474    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
475     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
476      to allow to compile customized code before the update)
477    o cleaning-up:
478      - fix CPP instruction syntax in pkg/obcs
479      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
480        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
481      - fix some threads issue in IO parts.
482    o pkg/dic:
483      - add tons of "_d 0" (--> much better testreports !)
484       and then update outputs of tutorial_global_oce_biogeo
485    o pkg/mom_fluxform:
486      add a special version of momentum advection intended to conserve momentum
487      next to a bathymetry step or a coastline edge. (default = off = #undef)
488    o new read/write pickup version:
489      - for now, only implemented for main (mdsio) pickup file.
490      - write out only what is needed to restart; merge pickup_nh , pickup_ph
491        and main pickup together.
492      - read meta file; read only what is needed to restart; stop if a field
493        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
494        if it make sense (even if the restart is not perfect).
495      - if no meta file, assume that pickup to read corresponds exactly to
496        a pickup that would currently be written.
497      - read pickup written in the old format (until checkpoint59i) if it
498        recognizes an old meta file (no field-list).
499      - add a meta file in exp. which starts from a pickup: 2 cases:
500        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
501         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
502        b) a meta file describing the content of the associated pickup file
503         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
504    o pkg/mdsio & pkg/rw:
505      - new routine to read a meta file ; new set of routine to read
506        Multiple-fields file (with meta file).
507    o added open boundary conditions capability for seaice
508        HSNOW, HSALT, UICE, and VICE
509    
510    checkpoint59i
511    o adjoint:
512      * fix multiDimAdvection adjoint
513        (partial recomputation problem by TAF for fVerT(:,:,kDown)
514        and comlev1 size definition (maxpass vs. max. number of tracers)
515      * verification/global_ocean.90x45x15 adjoint now tests
516        NLFS and multiDimAdvection using DST3 (=30)
517      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
518    o pkg/kpp: add "_d 0" to real constant (if missing);
519      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
520      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
521    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
522      for internal parameters related to restart process (formerly from PARAMS.h)
523      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
524    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
525      as argument. (only atm2d & obcs write_pickup have not yet been updated)
526    o pkg/monitor:
527      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
528      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
529      - account for deep Atmosphere factor and density factor (anelastic)
530    o added open boundary conditions capability for seaice HEFF and AREA
531    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
532      thermodynamics
533      - requires a little reorganization, which affects the testreport results
534        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
535        so that now the conservative form is tested
536      - add a few comments
537    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
538    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
539    o add new diagnostics to seaice: advective, diffusive fluxes (only for
540      multidim-advection, for scheme 2 they are not filled) and transports,
541      thermodynamic growth rates
542    o change units of EmPmR (inside the code, + within coupling interface)
543      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
544      Affects results @ truncation level (cg2d match) and update output of
545       experiments: lab_sea(6), global_ocean.90x40x15(10),
546      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
547      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
548      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
549      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
550    
551    checkpoint59h
552    o pkg/exf:
553      - improve vectorization by moving if-statement out of loops in
554        exf_mapfields, exf_radiation
555      - exf_bulkformulae.F: introduce 2D fields and vectorize code
556    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
557    o testreport:
558      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
559        monitor & update offline_exf_seaice exp. output.
560      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
561    o pkg/seaice:
562      - bug fix in the evp solver: boundary conditions were affected be
563        masking of zMax/zMin (changes results)
564      - minor bug fix in boundary conditions in seaice_calc_strainrates
565        (changes results for no_slip)
566      - seaice_lsr.F: make interpolation of eta dependent on boundaries
567      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
568      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
569        stress formulation and no-slip boundary conditions
570    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
571      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
572    o pkg/seaice: a first HSALT time stepping equation has been checked in
573    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
574      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
575      without requiring DO-IF statements
576    o pkg/thsice:
577      use continuous power-law function for partition of energy between lateral
578      melting/freezing and thinning/thickening ; old code using step function
579      still available with #undef THSICE_FRACEN_POWERLAW
580      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
581    o testreport: change AD testing : check against results/output_adm.txt
582      using same scripts as for forward test.
583    
584    checkpoint59g
585    o adjoint testing: in preparation for changing testreport:
586      - output format: cost and grad written on separated lines
587      - ad output results in directory "results" (instead of "results_ad")
588    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
589    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
590    o pkg/ecco: allow user defined cost function contributions
591    o testreport:
592      Allow to choose (per experiment) the list of tested output variables
593       and the main variable (used to issue a pass/FAIL ) ;
594      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
595      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
596      Also modify printing of summary:
597       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
598       b) echo the list of tested variables in the individual summary.txt of
599          each experiment.
600    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
601      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
602      (but still depend on the tile decompostion of the domain).
603    o pkg/seaice: change a discretization detail to make the B-grid code
604      "more symmetric". This change is likely to remove all "ridges/leads" that
605      where quasi-aligned with the grid in B-grid solutions. It may also be
606      the solution to the stress coupling issues with the B-grid.
607    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
608      remove .cvsignore from input dir. (since testreport no longer run here).
609    o pkg/thsice:
610     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
611     - fix reshaping of sea-ice just after advection:
612       melt all the ice only if ice-volume is too small.
613     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
614       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
615     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
616    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
617      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
618    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
619      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
620      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
621      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
622      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
623      -> update output.txt
624    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
625     this affects truncation error: -> update output.txt of exp:
626      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
627      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
628    
629    checkpoint59f
630    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
631    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
632      a bounded range (in forward mode)
633    o pkg/ecco, ctrl, autodiff and mom_common:
634     internal parameter controls, completements of implementations
635    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
636    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
637      (not seem any difference in testing results).
638    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
639       at face corners.
640    o pkg/generic_advdiff:
641     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
642      loop range indices for computing vertical advection tendency
643      and do the calculation in the interior only (no overlap) ;
644      for now, only implemented for SOM advection (to save CPU time).
645     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
646    o exch2 adjoint
647      First set of changes:
648      - add exch2 hand-written adjoint templates
649      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
650        This will require cleanup in pkg/autodiff/*.F
651        (changed routines currently kept separate in verif. code/)
652      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
653        that used to hide exch2 or cubed-sphere specific code
654        (commented via 'cph-exch2')
655    o pkg/seaice
656      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
657    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
658       output of global_ocean.cs32x15.thsice .
659    
660    checkpoint59e
661    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
662      for B-grid vector (not yet tested) and C-grid vector (<- only used
663      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
664    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
665      (#ifdef ALLOW_SALT_PLUME)
666    o gather_2d/scatter_2d: removed halo regions
667    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
668      scheme and the corresponding test case (under front_relax dir). For now,
669      only available with Skew-flux form and not yet tested in realistic set-up.
670      adjoint: store directives updated, but gradient checks deteriorated,
671      so maybe GM/Redi adjoint is now broken.
672    o seaice adjoint
673      * add AREA, HEFF, HSNOW as control variable
674        (should not change lab_sea results)
675      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
676    o pkg/seaice:
677      * added computation of saltFlux in seaice_growth;
678        For time being, sea ice salinity is assumed constant
679        contribution of snow flooding to freshening of sea ice is neglected.
680        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
681        defaults to 0.0 in order to maintain backward compatibility.
682        Typical values for SEAICE_salinity are 4 to 10 g/kg.
683      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
684      * added SEAICE_availHeatFrac, which specifies fraction of surface level
685        heat content used to melt or grow ice
686      * commented out cap of HICE: it helps keep ice thinner
687      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
688      * applied OBCS T/S mask to HEFFM sea ice mask
689    
690    checkpoint59d
691    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
692     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
693     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
694    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
695     and change default value of parameter "GM_Small_Number";
696     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
697       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
698       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
699    o pkg/ecco: cost function when applying pkg/smooth to controls
700    o pkg/ctrl: add forcingPrecond run time parameter
701    o pkg/seaice:
702     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
703     - fix bug in metric terms of u-equation in LSR solver (implicit part),
704       changes verification/lab_sea
705     - rearrange implicit part of u-equation in LSR solver to make it easier to
706       read, understand, and debug. This causes changes at the truncation level.
707     - fix (serious) bug in the boundary conditions (sign error in the implicit
708       part) of the LSR solver. Changes all LSR results.
709     - fixed problem with HSNOW initialization to avoid thick snow when AREA
710       is initilized with small values - does not change lab_sea results.
711     - added HsnowFile initialization capability
712    o pkg/smooth: addition to model/src and pkg/ctrl so allow
713     initialization of pkg/smooth and application to control vector
714    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
715    o dependencies: pkg/profiles requires pkg/cal
716    o pkg/profiles:
717     - added option ALLOW_PROFILES_GENERICGRID
718         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
719         that interpolation information (grid points and coefficients) is provided
720         within the netcdf input files.
721         -> sample matlab scripts can be found in MITgcm_contrib/gael
722         that allow you to prepare netcdf input files.
723     - also modified: cleaner include statements, cleaner error print statements,
724       cleaner stops when error, and more tests of the netcdf input files consistency.
725    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
726    o pkg/seaice:
727     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
728       requires a new routine: seaice_diagnostics_fill.F
729     - make sure that seaice does not move if not forced (pressure replacement
730       method, Hibler and Ip, 1995), changes results
731     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
732     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
733       It is turned off by default (=-1.), because it changes the results.
734     - make it possible to read AREA from a file, too.
735    
736    checkpoint59c
737    o add S/R and diagnostics for oceanic mixed-layer depth
738    o move GMRedi call after all vertical mixing schemes (including KPP)
739    o pkg/thsice:
740     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
741      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
742    o pkg/obcs:
743     - bug fix for balance code
744    o pkg/seaice:
745      - allow values of SEAICE_elasticParm > 1
746      - add new parameter SEAICE_evpTauRelax as an alternative
747        to SEAICE_elasticParm
748      - make lsr boundary conditions free slip (by default), changes result
749      - add code for no slip boundary conditions for lsr
750      - set minimum of zeta to zero (and not 4e8) (changes results)
751      - add a cap on AREA after advecting AREA if seaice_growth is not called
752    o change calculation of Visbeck K:
753      - no longer depend on tapering scheme; instead, compute slope (limited
754        by GM_maxSlope). this is equivalent to what was comuted before with
755        clipping or linear tappering.
756      - fix vertical averaging (wrong by 1/2 level)
757      - leave the old version (but will not be maintained) within
758        #ifdef OLD_VISBECK_CALC / #endif
759      - update output of exp. ideal_2D_oce
760    o change error catch in calc_r_star to improve vectorization
761    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
762      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
763    o adjoint:
764      Re-organized adjoint checkpointing according to Matt Mazloff
765      (but with modifs/completions/cleanups)
766      Storing is now bundled into large arrays to optimized I/O
767      (and second step in cleanup of the_main_loop)
768    
769    checkpoint59b
770    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
771      - export/import (between ocean & coupler) fields needed for ocean DIC.
772    o pkg/seaice:
773      - get rid of three more exchanges seaice_calc_viscosities (required
774        different loop boundaries in seaice_lsr and seaice_ocean_stress)
775      - bug fix in seaice_ocean_stress (update of lab_sea required)
776      - reduce loop boundaries to necessary minimum also in seaice_evp
777      - go back to the old way of computing deltaC/Z as the adjoint likes that
778        better
779    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
780      passive tracer to an Age Tracer) + update output.txt
781    o pkg/exf:
782      - implement A-grid / C-grid selection for wind-stress input files.
783      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
784      for now, in exf_bulk_largeyeager04.F only :
785      - change implementation for case where windspeed + 2. components wind-stress
786        are read-in. AND use rhoConstFresh to convert evap.
787    o pkg/seaice:
788      - use correct EXCH_UV for wind-forcing (on A-grid).
789      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
790        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
791    o pkg/exf:
792      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
793      EXF_INTERPOLATION:
794      - merge global_with_exf/code version of exf_interp_read.F
795        to the main code ;
796      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
797        reading the file ; Important: This options needs to be defined to recover
798        previous code.
799        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
800      - no longer loose real*8 precision along the way when using exf_iprec=64.
801    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
802      - change discretisation of evp-solver in order to avoid another exchange
803        (changes lab_sea) and clean up a little
804      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
805        help the adjoint (this also changes the results slightly)
806      - add a few "_d 0" where they had been missing in seaice_evp.F
807      - cleaning up: remove unused seaice_calc_rhs.F
808    o pkg/exf: some cleaning-up:
809      - change various "constants" into runtime parameters
810      - cleaned-up Large&Yeager04 routine which should eventually
811        replace exf_bulkformulae.F (changed names of S/R and CPP)
812        and merged various ALLOW_ATM_WIND options
813     only used with thsice pkg (in thsice_get_exf.F):
814      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
815        which are used when useStabilityFct_overIce=TRUE (= the default)
816      - change default values of ice & snow emissivity and scale downward LW
817        by ice & snow emissivity.
818    o pkg/thsice:
819     fix few little problems, in thsice_calc_thickn.F:
820      - growth vertically (and not laterally) if iceFrac == iceMaskMax
821      - melt only laterally if hIce < hThinIce (as the comments say)
822      and in thsice_extend.F:
823      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
824      - start to form ice as soon as the minimum ice-volume is reachable.
825     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
826      and cpl_aim+ocn
827    o pkg/kpp
828     - move computation of surface related input fields to KPP into a new
829       subroutine kpp_forcing_surf.F
830     - remove wrong (within bi,bj loops) EXCH calls.
831     - little cleaning (add argument myThid in last position, cvs header ...)
832     - for now, fix conservation problem by exchanging KPPviscAz (may not
833       be the best fix)
834    o pkg/seaice
835     - check for inconsistent evp parameter/cpp-flag combination
836     - remove leftover errIO flat for obsolete name list error handling
837    o OpenAD
838     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
839    
840    checkpoint59a
841    o pkg/seaice: some parameter clarifications and a little bit of clean up
842    o pkg/thsice: rename run-time parameters:
843       himin       -> hIceMin
844       himin0      -> hThinIce
845       hihig       -> hThickIce
846       i0          -> i0swFrac
847       transCoef   -> bMeltCoef
848       frac_energy -> fracMelting
849      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
850       with default values (for now) that do not change the results.
851      remove old version of thsice vars advection in pkg/seaice.
852    o in FFIELDS.h:
853      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
854      - make pLoad & sIceLoad always available (but still only used if
855         ATMOSPHERIC_LOADING is #define).
856    o pkg/kpp: replaced _KPP_RL with _RL
857    o bug fixes for vertical diffusivity computations when both KPP and
858        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
859        are no longer updating the vertical diffusivity array
860        (passed as argument) but are (re-) setting those arrays.
861    o pkg/seaice: fix bug in evp solver, while doing that
862      - change (improve?) discretization of stress computations for both
863        cgrid-lsr and evp solver
864      - add a new routine to compute strain rates
865      - the above changes lab_sea results
866      - add no slip conditions for evp solver (off by default), lsr-version
867        may follow
868      - fix exchange for shear at Z-points (does not change lab_sea)
869      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
870        (to force the user to pick a time step since there is not "safe" way
871        of choosing it)
872      - add principal stress diagnostics
873      - rearrange fields for evp a little to avoid having to call a: too many
874        exchanges and b: exchanges for stress trensor components which we do
875        not have.
876      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
877        of evp, complete rewrite for lsr case (latter is does not yet work
878        in all cases)
879    o pkg/kpp: add code to have mixing in shelf ice caverns
880      - add myThid to all kpp routines (long overdue)
881    
882    checkpoint59
883    o pkg/exf:
884      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
885        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
886      - move exf header files from lower_case.h to UPPER_CASE.h ;
887        add missing cvs Header & Name
888      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
889      - add namelist param. selectStressGridPosition, exf_monFreq
890      - retire many _CLIM routines, and remove data.exf_clim
891        + params moved to data.exf
892        + climsst, climsss now handled by exf_set_gen, i.e.
893          climss?period=0 refers to constant field,
894          climss?period=-12 to monthly forcing
895      - split up namelists in data.exf
896    o pkg/seaice:
897      - remove seaice_exch and seaice_exch_uv
898      - remove superfluous exchange of theta
899      - add myThid to seaice_budget_ocean/ice
900      - add new interface for atmospheric wind forcing (C-grid only)
901        + new routine
902        + two new field (taux, tauy for stress over ice)
903        + removed one global field (DAIRN) for C-grid case only
904    o pkg/thsise
905      - 2nd set of modifs for thsice adjoint in conjunction with exf
906    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
907    
908    checkpoint58y_post
909    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
910      vertical diffusivity, similar to that in MOM4; turned on using
911      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
912      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
913    o Added capability for 3D specification of background vertical diffusion
914      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
915      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
916      "data" file that contains the 3D vertical diffusivity coefficients.
917    o ice dynamics (pkg/seaice) with thsice thermodynamics:
918      - add code within pkg thsice to advect & diffuse sea-ice fields
919      similar to (and will replace) what has been added in  seaice_advdiff.F,
920      but: - conserving Mass, Heat & Salt.
921           - better when using non-linear advection scheme (not yet fully tested)
922           - can also be used in atmospheric set-up (for now, only the diffusion).
923    
924    checkpoint58x_post
925    o IO option for global-file compact format:
926      - add options when generating topology (utils/exch2/matlab-topology-generator)
927      - add I/O capability (pkg/mdsio).
928      - adapt utils/matlab/rdmds.m to read this format.
929      for now long-line format not yet supported by pkg/mdsio (& exch2).
930    o shelfice: add a few diagnostics
931    
932    checkpoint58w_post
933    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
934      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
935      (and replace horiVertRatio in NH code).
936      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
937                         and tutorial_plume_on_slope (sensitive to truncation)
938    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
939      directly to drive seaice model (C-grid only)
940    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
941     - reintroduce computation of wind from stress,
942     - compute tau (in exf_bulkformulae.F) from windstress averaged to
943       mass points to avoid tau = 0
944     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
945    o rdmnc.m: make it work with "global" files created with gluemnc
946    o rdmnc.m : some improvements in dealing with singleton dimension
947      (tested on all testreport mnc output files).
948    o genmake2: disable pkg/profiles if netcdf test fails.
949    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
950    o move call to cal_readparms up to make calendar parameters/variable available
951      to all packages
952    
953    checkpoint58v_post
954    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
955      useDynP_inEos_Zc tested.
956    o pkg/exf: changes to properly interpolate/mask/scale initial fields
957    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
958      and portions thereof.  See read_cs.txt for description and examples.
959    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
960      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
961      following the great-circle arc between those 2 points.
962    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
963      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
964    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
965     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
966     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
967     - still needs work (not working with some options ; efficiency to improve)
968       and serious testing.
969     - use this scheme for temperature & salinity in 2 advection test exp.:
970       advect_xy & advect_xz, respectively.
971    
972    checkpoint58u_post
973    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
974    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
975    o testreport: add option "-skipdir" to skip some test.
976    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
977      momentum calculation.
978    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
979    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
980      remove checkpoint.F and the_correction_step.F (no longer used);
981      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
982    o add option (linFSConserveTr) to correct for tracer source/sink due to
983      Linear Free surface
984    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
985    o pkg/thsice: fix reading mnc-pickups
986    
987    checkpoint58t_post
988    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
989    o pkg/mdsio:
990     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
991       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
992       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
993     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
994     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
995       either MDS_READ_FIELD or MDS_WRITE_FIELD )
996     - new S/R (to replace MDSWRITEMETA), which allows to write more
997       informations (variable names, time ...) to meta files.
998     - modify rdmds.m to give back the meta file content.
999    o pkg/diagnostics: change vertical interpolation to be safer, and more
1000       flexible (define p-levels to interpolate to in data.diagnostics);
1001      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1002       diagnostic pointer.
1003    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1004    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1005    o fix multi-category seaice:
1006     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1007       SEAICE_MULTICATEGORY
1008     - fix short wave heat flux
1009    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1010       and allow to use EVP solver. Change forward lab_sea: test both EVP
1011       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1012    o Initial check-in of lab_sea adjoint
1013      (very similar to natl_box_adjoint/code_seaice)
1014      * used C-grid and EVP solver
1015      * used KPP, GM/Redi
1016      * uses inAdExact=.TRUE.
1017      * gradient checks fail for both ADM and TLM
1018        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1019        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1020        issue is related to forward mismatch between g77 an ifort
1021    o pkg/seaice: overhaul of thermodynamics
1022     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1023     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1024     - move a few global fields out of SEAICE.h into seaice_growth.F and
1025       make them 2D (FICE/QNETO/ ...)
1026     - remove FO (it is the same as QNETO)
1027     - introduce a few local fields to avoid modifying external fields such
1028       as atemp, etc.
1029    
1030    checkpoint58s_post
1031    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1032      changed exf_set_gen.F so that
1033        genperiod=0 means input file is one time-constant field and
1034        genperiod=-12 means input file contains 12 monthly means
1035    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1036      this affects truncation error ; generate new output file for exp. which
1037      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1038        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1039        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1040        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1041        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1042        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1043    o start implementation of deep-atmosphere and anelastic formulation
1044    o verification: remove 2nd copy of input files and use script "prepare_run"
1045      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1046    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1047    o profiles: fix for multithreaded case
1048    
1049    o diagnostics: rename few diags:
1050      s/'PRESSURE'/'RCENTER '/g
1051      s/'TICE    '/'oceFreez'/g
1052      s/'TAUX    '/'oceTAUX '/g
1053      s/'TAUY    '/'oceTAUY '/g
1054      s/'SWFLUX  '/'oceQsw  '/g
1055      s/DIFx/DFxE/g
1056      s/DIFy/DFyE/g
1057      and add few ocean-forcing diagnostics:
1058      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1059    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1060      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1061      as actual snow thickness.  It now refers everywhere to effective snow
1062      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1063    
1064    checkpoint58r_post
1065    o modifications to pkg/seaice/growth.F, which change results of
1066      lab_sea experiment: fixes pertain to melting snow over open water, to
1067      masking EVAP under sea ice, and to using the correct AREA variable for
1068      computations of EVAP, PRECIP, HSNOW, and GHEFF
1069    o add ability to read bathy, salt, and theta using MNC (off by def)
1070    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1071      both are turned off by default and do no change any results
1072    o seaice advection with pkg/thsice: a step toward the use of non-linear
1073      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1074    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1075      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1076      in natl_box (affects results @ truncation level: update output.txt)
1077    o multi-threading and IO:
1078      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1079      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1080        (needed to work with SingleCpuIO): tested in all verif. exp.
1081    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1082      affects the results (but none of the verification test uses this scheme).
1083    o Adding some pkg/diagnostics capability to pkg/seaice
1084      (will certainly be subject to changes)
1085    o ctrl: adding new control variables:
1086      lwflux, lwdown, evap, snowprecip, apressure, runoff
1087    
1088    checkpoint58q_post
1089    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1090      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1091      high_res_cube configuration by 4% on Columbia.
1092    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1093      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1094      dynamical allocation (seems to work in multi-threaded).
1095    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1096      single CPU io) so that TAF does not have to see EESUPPORT.h
1097    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1098    
1099    checkpoint58p_post
1100    o obcs: stop if obcs is used with useCDscheme = .true.
1101    o shelfice:
1102     - fix a sign error so that no slip at shelfice interface works
1103     - remove stop for combination non-hydrostatic code and shelfice. That does
1104       not mean, that the results are correct, but at least they are numerically
1105       stable
1106    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1107    o added adjoint exch routined for all exch*3d* routines
1108      and updated flow directives
1109    
1110    checkpoint58o_post
1111    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1112      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1113    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1114      and clean-up reading/writing of pickup files.
1115    o fix local version of read/write pickup (NH part) in rotating_tank/code
1116    o simplify EXCH interface:
1117     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1118     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1119    o added the regrid package
1120    o shelfice:
1121     - add a simple boundary layer scheme to reduce noise
1122     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1123    
1124    checkpoint58n_post
1125    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1126       local variable (not in common block).
1127    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1128      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1129      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1130        to work with SingleCpuIO.
1131    o add "_d 0" to real constant of pkg/cfc subroutines ;
1132       update exp. cfc_exemple & tutorial_cfc_offline output files.
1133    o multi-threading and IO:
1134      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1135        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1136      - barrier before and after reading.
1137      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1138      - avoid using MDS_WRITELOCAL for LAND pkg output.
1139      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1140        common-block variables ; Allows multi-threading with master-thread IO.
1141    o change default MAX_NO_THREADS from 32 to 4 ;
1142      and stop cleanly when MAX_NO_THREADS is too small.
1143    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1144    
1145    checkpoint58m_post
1146    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1147       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1148    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1149       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1150       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1151    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1152        add MITgcm_tutorials (= code + all the tutorials)
1153    o ecco, option to compute cost for total ssh (mean+anom)
1154    o consistent with addition of ptracer and ssh in pkg/profiles
1155    o profiles: adding ptracer and ssh
1156    o testreport: change multi-test output-file name
1157      (from output.txt.{name} to output.{name}.txt)
1158    o profiles: now ok for mutli-tiles case
1159    o seaice: add 4 parameters for different advection schemes for area,
1160      (effective) seaice thickness, enthalphy, and snow height. Their default
1161      is the standard parameter SEAICEadvScheme
1162    o calc_gw:
1163     - add cosFacU in zonal viscous flux (harmonic.visc.).
1164     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1165       of tutorial_plume_on_slope.
1166    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1167    o calc_gw: true flux-form, account for horizontal grid spacing.
1168      update rotating_tank results, but not plume_on_slope (affected at
1169      truncation level, 11 digits).
1170    
1171    checkpoint58l_post
1172    o calc_gw:
1173     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1174     - remove side-drag for now (need to fix it); update plume_on_slope results.
1175     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1176    o commit code to make SST/SSS weights spatially variable
1177      (based on either variable in-situ or variable initial T/S weights)
1178    o pkg/ecco:
1179      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1180        now based on horizontally varying weights wthetaLev, wsaltLev
1181      * cost_averagesflags now returns year indices in addition to day, month
1182      * sflux balance is performed on annual basis
1183        (sflxumm, sfluxmm2, bal_sfluxmm)
1184      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1185        including separate counting and multipliers
1186    o pkg/rbcs
1187      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1188    
1189    checkpoint58k_post
1190    o testreport:
1191     - always build in dir. "build" (if not there, mkdir build instead of building
1192       & running in input)
1193     - run in dir run (if it exists), in build otherwise.
1194     - call prepare_run (if input/prepare_run exists)
1195     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1196    o pkg/exf modifications to interpolation and rotation routines for more
1197       reasonable treatment of North Pole singularity: for tracers North Pole
1198       value is set to northernmost zonal-mean value, for zonal velocity it is
1199       set to zero, and for meridional velocity it is set to northernmost value.
1200    o pkg/exf/exf_check_range.F
1201     - add tile index to diagnostics and move stop statement to the very
1202       end of the routine.
1203    o pkg/diagnostics: (diagnostics_main_init.F)
1204      define title of isomorphic variables according to the current config.
1205    o pkg/thsice with pkg/seaice dynamics:
1206    - fix domain of computation (interior only, required for exf) and do exchanges
1207    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1208    o towards a standard way of dealing with multi-threading in MONITOR
1209      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1210    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1211       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1212    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1213    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1214    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1215       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1216    o tracer advection:
1217     - clean-up and simplify calc_common_factors.F
1218     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1219       advection subroutine (but still not used within DST advection S/R)
1220    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1221    
1222    checkpoint58j_post
1223    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1224      from file (collects calls previously in FORWARD_STEP)
1225    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1226    o adjoint store dir. adjusted accordingly
1227    o genmake2
1228      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1229    
1230    checkpoint58i_post
1231    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1232      on wind stress (SEAICEstressFactor defaults to 1.)
1233    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1234      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1235    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1236      on CS-grid: no longer loosing mass.
1237    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1238    o pkg/ggl90: fix sloppy output and fix a bug
1239    o pkg/seaice: added SEAICEuseEVPpickup parameter
1240      - Set to false in order to start EVP solver with
1241        non-EVP pickup files when using SEAICEuseEVP
1242      - fix sign error in diffusion in seaice_calc_rhs
1243    
1244    checkpoint58h_post
1245    * Modifications for bottom topography control
1246      o replace hFacC by _hFacC at various places
1247      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1248      o add non-self-adjoint cg2d_nsa
1249      o update autodiff support routines
1250      o re-initialise hfac after ctrl_depth_ini
1251      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1252    * Adding verification for 5x5 box (4-layer) bottom topography control
1253    
1254    checkpoint58g_post
1255    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1256       used for mean seasonal cycle, mean diurnal cycle); add an example
1257       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1258    o pkg/ggl90:
1259      - add parameter (minimum surface kinetic energy)
1260      - fix bug (avoiding division by zero)
1261    o couple pkg/thsice to pkg/seaice:
1262      - modify advection in seaice to accomodate new scalar fields to be advected
1263      - only muliDimAdection scheme work with seaice/thsice
1264      - mapping of thsice-variables to seaice-variables, back and forth
1265      - does not break the verification experiments, but does not give the
1266        desired results either
1267    o pkg/seaice
1268      - make (default) second order advection a bit less confusing?
1269    
1270    checkpoint58f_post
1271    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1272      to pkg/seaice):
1273      - new routines thsice_map_exf and thsice_get_exf provide the interface
1274      - add an additional formal parameter to thsice_solve4temp
1275    o pkg/exf:
1276      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1277      - correct Stefan-Boltzmann constant
1278      - new parameter for longwave surface emittance
1279      - separate some stuff from exf_bulkformulae into new routines  
1280        exf_radiation, exf_wind
1281      - add new parameters and constants: longwave emissivity for ocean, ice
1282        and snow, evaporation parameters over ice
1283      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1284        either wind from stress or stress from wind
1285    o pkg/thSIce:
1286    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1287    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1288       and THSICE_CALC_THICKN
1289    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1290    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1291      to make debugging easier.
1292    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1293    o pkg/bulk_force:
1294      - clean-up comments and parameters ;
1295      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1296    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1297      generate new output for test-experiment: aim.5l_cs.thSI
1298    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1299      testreport accordingly
1300    
1301    checkpoint58e_post
1302    o SEAICE_CGRID adjoint done
1303    o R_STAR adjoint implemented.
1304      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1305      * need to sort out init. of h0facc, etc.
1306    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1307      to be able to use it in pure forward.
1308    
1309    checkpoint58d_post
1310    o upgrade simple test-experiment to tutorial example:
1311     step.1: duplicate the experiment and (step.2) will remove the old copy.
1312      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1313      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1314      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1315      tutorial_global_oce_biogeo    <- copy of dic_example
1316      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1317      tutorial_plume_on_slope       <- copy of plume_on_slope
1318      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1319      tutorial_global_oce_optim     <- empty for now (David ?)
1320      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1321     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1322    o correct a sign problem in cost_scat.F
1323    o obcs and ptracers: fix boundary conditions for advections schemes
1324      with larger stencil
1325    o thsice adjoint: start
1326    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1327      completeness
1328    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1329      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1330    o ptracers adjoint:
1331      * avoid extensive recomputatations
1332      * fix missing re-init. of gptr (missed by TAF)
1333    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1334      me to turn off the excessive output to STDOUT that this package produces
1335    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1336      and add those terms in Vector-Invariant formulation.
1337    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1338      if the control period (xx_hfluxperiod etc) is 0
1339    o in profiles pkg, clean routines and fix details
1340    o in ecco pkg, reading ssh data:
1341      fix problem in case the model does not start at iter0=0
1342    o fix mnc-pickup/restart for ptracers
1343    o new package prifiles:
1344      code to compute profile-based cost by Gael Forget
1345      (modifs in ecco, ctrl, autodiff)
1346    o Benign bug fix in initialization (spotted by M. Mazloff) of
1347      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1348    
1349    checkpoint58c_post
1350    o adjoint: finish NLFS adjoint and provide reference output in
1351      verification/global_ocean.90x40x15/results_ad_nlfs
1352    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1353      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1354      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1355      with SEAICE_CGRID defined.
1356    o move calendarDumps from "data" to "data.cal" and clean-up the code
1357      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1358    o add useEXF & useCAL flags (for now, set in hard-coded way)
1359    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1360      (were missing in NH mode, and wrong in quasihydrostatic mode).
1361      waiting for Chris updated version of calc_gw to add those CALLs.
1362    o fix bug in quasihydrostatic S/R ;
1363      add a test for this option: global_ocean.90x40x15.qshyd
1364    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1365      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1366    o add on/off flag useOffLine for package OFFLINE
1367    o seaice:
1368      - modify advection so that it works also on the C-grid
1369      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1370        problem in multi-tile runs with C-grid
1371      - add flags for clipping ice velocities and/or masking solver forcing
1372      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1373        C-grid solver
1374      - added a few comments to seaice_diffusion.F
1375      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1376        are now exclusive)
1377      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1378        required re-ordering the code a little:
1379       + make DAIRN global variable (defined in SEAICE)
1380       + move computation of the viscosities eta and zeta into a new separate
1381         routine (because I need to recompute them in seaice_ocean_stress.F)
1382    
1383    checkpoint58b_post
1384    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1385      update output.txt of exp. aim.5l_cs.thSI
1386    o various mnc cleanups and improvements:
1387      + shrink lookup tables by factor of ~4
1388      + better error reporting when running out of lookup space
1389      + able to handle longer path/file names (up to 500 chars)
1390    o adjoint:
1391      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1392      - TBD: "hidden" mom_vecinv recomp. in dynamics
1393    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1394     (allow to differentiate between forcing components using new integer flags:
1395      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1396     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1397    o ecco
1398      - enable trend removal from SSH anomaly obs.
1399    o adjoint
1400      - a fix for PmEpR when #undef EXACT_CONSERV
1401      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1402      - try to fix "hidden" recomp. in forward_step for NLFS
1403        (NLFS seems broken sometimes after I checked it in)
1404    o seaice:
1405     - add c-grid version of the dynamic solver:
1406       + three new routines that are the c-grid substitute lsr, dynsolver
1407         and ostres
1408       + put a few fields that were local to dynsolver into global common
1409         blocks, so that I can move the computation of stresses etc into
1410         seaice_lsr (saves coding but may break the adjoint).
1411     - replace more hardwired parameters by runtime parameters
1412     - add ice masks that mask the rhs of the implicit solvers where there
1413       is no ice (commented out in seaice_dynsolver, because i am not sure
1414       if this works properly), eventually this should replace the clipping
1415       of ice velocities in seaice_dynsolver to +/-40cm/s.
1416    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1417      include it only where its needed
1418    o move balancing of fluxes before the call of external_forcing_surf
1419    o seaice:
1420      - correct units of turning angles (now they are really in degrees)
1421      - move computation of GWATX/Y out of main routine into dynsolver
1422      - initialize GWATX/Y in seaice_init
1423    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1424      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1425    o seaice: add runtime flags for turning angles (default to zero)
1426    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1427      and trend from exf forcing and ctrl control adjustments
1428    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1429      (since checkpoint57x_post)
1430    o change the default rotation period to 86164.s = the Earth rotation
1431    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1432      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1433    o seaice advection: add code for choosing between the default (2nd order
1434      central differences) and multiDim advection schemes provided by
1435      pkg/generic_advdiff
1436    o seaice:
1437      - removed all references to SEAICE_GRID.h fields from
1438        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1439        (cubed-sphere configuration will change a little)
1440      - grid computations in seaice_init are obsolete now.
1441      - cleaned up code a little so that is easier to read (hopefully).
1442      - added new (better?) discretizations of default advection and diffusion
1443        (turn on with SEAICEuseFluxForm)
1444      - replace 1 in 3d global fields by kSurface in growth.F
1445      
1446    checkpoint58a_post
1447    o seaice:
1448      - bug fix in advect.F
1449    o shelfice:
1450      - separate shelfice load anomaly from pload (breaks with time
1451        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1452        Its default is 0., but it may be computed more cleverly from (unknown)
1453        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1454        done offline. A good approximation of the pressure load anomaly is
1455        necessary to avoid large initial adjustment processes underneath
1456        deep-reaching shelfice.
1457      - small fix in ISOMIP shelfice_thermodynamics
1458      - add more sophisticated thermodynamics of Hellmer (1989), this is
1459        now the default
1460      - give a few constants more intuitive names
1461    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1462      if bulk formulae are used in long integration (especially EmPmR). Turn
1463      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1464      if balancePrintMean, the imbalance that is substracted is printed to
1465      STDOUT.
1466    o fix bug (typo) in obcs_apply_eta.F
1467    o add a new package shelfice which enables us to model the circulation
1468      underneath shelf-ice with draughts of hundreds of meters.
1469     - works
1470     - to do: + include improved thermodynamics
1471              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1472                instead of new field kTopC
1473              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1474                instead of new field R_shelfIce and new code in ini_depth.F
1475                and ini_mask_etc.F?
1476              + adjust vertical mixing schemes?
1477    o seaice pkg:
1478     - add a cpp-flag to include a simple formula for a salinity dependent
1479       freezing point of sea water at the surface
1480     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1481       meridional stresses are now different (and hopefully correct)
1482    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1483       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1484       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1485    o pkg/diagnostics: add options and parameters for regional-statistics
1486       diagnostics ; define regions by reading a region-mask from a file
1487       (might add other options later)
1488    o pkg/bulk_force:
1489     - add option and parameters to use AIM surface-flux formulae.
1490     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1491       others forcing fields (defined in PARM05, parameter file "data") are loaded
1492       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1493     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1494     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1495     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1496       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1497     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1498    
1499    checkpoint58
1500    o add "--embed-source" option to genmake2 which, when the supporting
1501      tools can be compiled (as determined by genmake2) will turn on the
1502      embed_files package which then embeds the entire MITgcm source code
1503      (*.[fFhc] + Makefile) used for the build within the executable
1504      - requested by CNH but off by default
1505      - adds a paltry <9MB to the mitgcmuv executable in most cases
1506      - only writes the output when useEMBEDSRC in eedata is true
1507    o clean up 3-dim. relaxation codes:
1508      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1509      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1510      * Thanks to Tom Haine for testing!
1511    
1512    checkpoint57z_post
1513    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1514      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1515    o fix the pickup behavior for obcs in combination with ptracers
1516    o fix a bug in ptracers_external_fields_load
1517    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1518      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1519    o transfered surface NH pressure to eta field (if exactConserv).
1520    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1521         and update lab_sea output.txt file.
1522    o completing 3-dim. relaxation code: additional term
1523         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1524      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1525      * At compile time, in "EXF_OPTIONS.h" set
1526          #define  ALLOW_CLIMTEMP_RELAXATION
1527          #define  ALLOW_CLIMSALT_RELAXATION
1528      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1529          tauThetaClimRelax3Dim = 15552000.0,
1530          tauSaltClimRelax3Dim  = 15552000.0,
1531      * 3 cases:
1532          1) Use a constant-in-time 3-dim. field
1533          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1534          3) Real-time relax. to time-evolving prescribed field
1535    o Adding Laplacian-type smoothness constraint on
1536      initial and boundary (forcing) controls (ic, bc)
1537      * enable at compile-time via
1538        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1539      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1540      * Absolute scale somewhat unclear so far
1541      * no area weighting was included since no other cost term does so far
1542    
1543    checkpoint57y_post
1544    First step for a NLFS adjoint
1545    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1546    o new init. routines for calc_r_star, calc_surf_dr
1547    o still need to deal with ini_masks_etc
1548    o testreport seemed happy
1549    checkpoint57y_pre
1550    
1551    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1552    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1553    o add new offset feature to offline pkg (plus minor cleanup)
1554    o cfc fixes for final year of integration
1555    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1556      be in GCHEM_OPTIONS).
1557    
1558    checkpoint57x_post
1559    o fix testreport Pb in multiple test experiment.
1560    o cleanup our namelist syntax in verification:
1561      - make it more F95 standards compliant (some work still needed)
1562      - allows the vast majority of our tests to work with gfortran
1563    o Non-Hydrostatic:
1564     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1565     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1566    o Allow to apply AB on T,S rather than on AB(gT,gS):
1567     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1568     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1569       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1570     - need a "clever" read_pickup to restart from the other AB formulation
1571    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1572    o remove some unused variables (reduces number of compiler warnings)
1573    o adjoint
1574      * Disable useVariableViscosity for adjoint for time being
1575        (there are a number of extensive recomputations)
1576      * Initialize certain variables needed for adjoint
1577    
1578    checkpoint57w_post
1579    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1580                 fix the singleCpuIO RS version of MDSWRITEFIELD
1581       and add a WARNING if using globalFiles=T with multi-processors.
1582    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1583      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1584    o tracer advection scheme:
1585      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1586       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1587       was not very convenient).
1588      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1589       (further tests needed for the implicit DST & Flux-Limiter schemes).
1590    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1591      and sRef for convenience, handy, when you want to initialize
1592      ptracers in a large domain with a constant non-zero value. Also,
1593      untangle ptracers_init.F a little.
1594    
1595    checkpoint57v_post
1596    o change dome exp. to use variable viscosity in side-drag terms.
1597    o remove all the files from the cfc_offline test since they are now
1598      incorporated into tutorial_cfc_offline which has been producing
1599      identical results for a few days of testing
1600    o add new parameter: sideDragFactor to enable half-slip-side BC
1601      and change side-drag S/R to use viscosity from mom_calc_visc
1602      (can switch back by setting sideDragFactor=0.); affects results at
1603      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1604       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1605    o vorticity & strain are now computed without masking, to account for
1606      no-slip-side BC in variable viscosity calculation ; mask is applied
1607      anyway later on, before computing advection/coriolis terms.
1608    o modify exp4 to test new obcs support for reading from external files
1609      and for passive tracers
1610    o fix behavior of ptracers_monitor when monitor output is written to a
1611      netcdf-file; still not independent of monitor.F (writes in the same
1612      file).
1613    o change default value of tRef (put a uniform, meaningful value for ocean
1614      & atmos) and initialize sRef (was missing, as Martin mentioned).
1615    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1616      to be proportional to enstrophy dissipation length.  Thus,
1617       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1618      This is now consistent with Smagorinsky and with the manual.
1619    
1620    checkpoint57u_post
1621    o OBCS and PTRACERS: add open boundary support for passive tracers
1622      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1623        OB-values from file; this is not different from the way theta and salinity
1624        are treated
1625      - however, Orlanski-radiation conditions are not supported, and the model
1626        will stop if you use pTracers and Orlanski at the same time.
1627      - beefed up the rountine obcs_external_fields_load: now only those open
1628        boundary values are overwritten with values from files for which there
1629        are really files, otherwise the OB-fields remain untouched. This makes
1630        it possible to use different OBs at different ends of the domain (as
1631        with EXF)
1632    o reduce number of exch calls in shap_filt (s2).
1633    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1634      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1635    
1636    checkpoint57t_post
1637    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1638    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1639      same truncation, independent of the face number: affects affects several
1640      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1641    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1642      note that biharmonic viscosity + no-slip was not tested in any experiment.
1643    o fix bug in non-linear free-surf side-drag ; generate new output for
1644      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1645    o make mnc honor the writeBinaryPrec flag for most kinds of output
1646    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1647    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1648      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1649    o add brackets in multi-terms sum to get same truncation, independent of
1650      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1651      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1652    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1653      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1654      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1655      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1656      Suggested values of viscosity parameters found in mom_calc_visc.
1657      Many new viscosity diagnostics available.
1658    
1659    checkpoint57s_post
1660    o Add clearing-house for viscosity calculations, mom_calc_visc and
1661      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1662      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1663      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1664      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1665      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1666      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1667      ViscAhStrain and viscAhTension are now retired.
1668    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1669    o In response to JMC's bug report, genmake2 now ignores any soft-links
1670      that it finds in the *current* directory when searching for files.
1671      Soft-links found in any other source directories will still work as
1672      they did before.
1673    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1674      a C routine to unlimit the stack size
1675    o mnc-ify pkg/aim snapshot vars
1676    o mnc-ify pkg/land as requested by Daniel
1677    o various changes to mnc including:
1678      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1679      - output can now be grouped so that all files within a group
1680          change the ITER portion of their names in lock-step together
1681      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1682          and works with both EXCH1 and EXCH2 (but needs more testing)
1683      - writing works for all verification test cases w/ g77 on Linux
1684    
1685    checkpoint57r_post
1686    o make MNC variable initialization happen earlier
1687    o add diagnostics for (almost) each term of the momentum Eq.
1688    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1689    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1690    o remove MINIMAL_TAVE_OUTPUT option ;
1691      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1692    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1693      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1694    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1695    o add time-dependent SST, SSS control
1696    o cost terms in ecco/ modularized (new cost_generic.F)
1697    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1698    o new infrastructure for seaice model vs. obs misfits in seaice/
1699      * driver from the_main_loop.F is seaice_cost_driver.F
1700      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1701      * gradient check in Exp. 6a of natl_box_adjoint/
1702    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1703      (see README file)
1704    
1705    checkpoint57q_post
1706    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1707    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1708      - bug was reported by Jean-Michel and Ian Fenty
1709    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1710      update exp. cpl_aim+ocn output.
1711    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1712      Needed for high-res. runs with large global files
1713      to be able to limit tapelev size
1714    o Changed some tests for adjoint:
1715      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1716      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1717      * global_ocean.90x40x15/ back to default 3-level checkpointing
1718    o Modifications to enable scripted COMMON to MODULE conversion
1719      * verification/OpenAD/code/ has necessary scripts and description;
1720      * converts, compiles and runs successfully;
1721    
1722    checkpoint57p_post
1723    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1724    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1725      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1726    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1727    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1728      (was already the case for dissipation with mom_vecinv,
1729       and also the case for grad.PhiHyd when staggered-timeStep)
1730      This will allow to put dissipation out-off the AB time-stepping.
1731     Unfortunately, affects truncation error. Update output of exp. that "fails"
1732      (cg2d matching number) and leave the others for later: front_relax(10),
1733      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1734      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1735    
1736    checkpoint57o_post
1737    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1738      (2) its ready to be documented during the 20050801 DocFest
1739    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1740      for ideal_2D_oce and lab_sea on linux_ia32_g77
1741    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1742      in global1x1_tot/code_seaice_adj to access indices 32, 33
1743      (worth another tag)
1744    
1745    checkpoint57n_post
1746    o adding precip control xx_precip 32
1747    o adding swflux control xx_swflux 33
1748    o Replacing 10 forcing penalty cost routines by 1 generic.
1749    o Implementing partitioning in time-mean and variable adjustment
1750      for atmos. state.
1751    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1752  o in natl_box_adjoint:  o in natl_box_adjoint:
1753    * updated: results_bulk/    * updated exp 1 to 10
1754    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1755    o updated global1x1/*_seaice_adj/
1756      to incorporate latest changes
1757    o enable useSingleCpuIO for mdsio vector routines
1758      (applies in particular to tapelev I/O)
1759    o removed inefficient K-loop in all active_file*control*.F
1760    
1761  checkpoint57m_post  checkpoint57m_post
1762  o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)  o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)

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