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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.1054 by jmc, Sun Jan 25 20:26:00 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/diagnostics with "periodic averaging diagnostics":
8  o moved ptracer ctrl index 17 -> 32    fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
9    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
10    o pkg/obcs: fix loop ranges for balancing code
11    o pkg/flt:
12     - improve criteria for finding which tile owns a float.
13     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
14    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
15      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
16      with ocean biogeo)
17    o pkg/flt:
18     - do some cleaning and fix the restart ;
19     - add output.txt in flt_example/results to get this pkg tested.
20    o genmake2: add an EXTENDED_SRC option and flag.
21       for now, cannot be turned on on command line (only through genmake_local)
22    o pkg/mdsio: read/write vector:
23     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
24     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
25       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
26     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
27      (drop to 4 digits matching for grad). But this test does not look very
28      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
29    
30    checkpoint61g
31    o pkg/flt:
32      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
33       + make OPTIONS file more standard.
34      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
35      - fix _BYTESWAPIO CPP-Flag
36      - standard reading of file-parameter "data.flt"
37      - fix argument list of S/R FLT_RESTART
38      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
39    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
40    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
41      a still unfixed compiler/optimization bug
42    
43    checkpoint61f
44    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
45      update results of global_ocean.cs32x15.icedyn test.
46    o move getcon.F from model/src to pkg/fizhi.
47    o pkg/exf: add parameter for extrapolation of temp up to the surface
48       and option to prevent negative evap (in bulk_largeyeager04 only).
49    o Prather Advection scheme: fix tracer conservation for divergent flow
50      (e.g., when using NonLin Free-Surface).
51    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
52    o gmredi (Visbeck-variable-K):
53     - add more parameters to Visbeck-variable-K.
54     - use a 5 points average for dSigmaR in Visbeck-K calculation
55       (more "homogenous": same stencil and same weights as in dSigmaH)
56     - update output of ideal_2D_oce experiment.
57    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
58      (#undef REAL4_IS_SLOW)
59     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
60       coordinate variable
61     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
62       (surface forcing fields), removes some of the functionality
63     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
64     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
65       probably not all: copy _RS surface flux fields to RL field before
66       calling DIAGNOSTICS_FILL
67     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
68       real*4 (CALL EXCH_*_RS) versions.
69     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
70       (generate new output).
71    
72    checkpoint61e
73    o gmredi (Visbeck-variable-K):
74      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
75      - change computation of Visbeck-K where Slope > Smax :        
76        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
77        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
78    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
79      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
80    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
81    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
82      does not become too large (to avoid precision problems in implicit-diffusion
83      solver); update ideal_2D_oce output.
84    o pkg ggl90:
85      - in ggl90_cal.F: compute only one set of visc/diff, used to
86        step forward TKE/T/S/momentum
87      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
88        have Prandlt =1)
89    o gmredi (fm07):
90      - add lower limit on Transition layer thickness + lower limit on 1/lambda
91      - allow to set few more params from data.gmredi
92    o pkg ggl90:
93          - add missing sqrt(2) factor in computation of mixing length
94            scale in ggl90_calc.F
95            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
96    
97    checkpoint61d
98    o adjoint modifs
99      - adapt to new field rhoInSitu
100      - allow to revert from StoreDynVars2D, StoreDynVars3D
101        to individual fields
102        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
103    o store 3-D (in-situ) density in commom block (DYNVARS.h)
104     - save 1 rho computation.
105     - no longer modify T & S inland when using down_slope pkg.
106    o gad_som : allow to switch to SOM advection for T & S without corresponding
107      pickup files (using new S/R: MDS_CHECK4FILE).
108    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
109      (for useSingleCpuIO to work in multi-threaded)
110    o pkg/shelfice:
111     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
112       with SHELFICEtopoFile in data.shelfice
113     - move code for reading ice shelf topography and modifying hFacC into separate
114       subroutines of the shelfice package
115     - separate initialisation of "fixed" and "variable" variables
116     - kTopC is not (yet) replaced by kSurfC, although this is possible
117    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
118    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
119      and rename:
120      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
121      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
122    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
123    
124    checkpoint61c
125    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
126      to add mass source/sink of fluid in the interior (3-D generalisation
127      of oceanic real-fresh water flux).
128    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
129    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
130    o new pkg: down_slope
131      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
132      - presently, modify T & S inland (dwnslp_calc_rho.F).
133        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
134      - implementation for ocean in P-coords not tested.
135      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
136    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
137      (to facilitate conversion of oceanic pkg to p-coordinate).
138    o change FIND_RHO to FIND_RHO_2D :
139      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
140    o new pkg: cheapaml
141    
142    checkpoint61b
143    o exch2:
144      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
145      - no longer depend on the order sequence (N,S,E,W).
146      - 3rd exchange no longer needed (tested with 24 tiles).
147      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
148      - exch_UV_A-grid readily available (but not yet tested).
149      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
150      (both are no longer needed) in exch_uv: no effect in forward run; but
151       get truncation error differences with adjoint exch.
152    o exch2:
153     - change index-bounds storage (moved from target to local tile,
154       more intuitive this way) ; rename/remove some variables.
155     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
156    
157    checkpoint61a
158    o exch2/matlab-topology-generator:
159      fix bug in index bounds for N-S internal exchange (hard to tell if this
160      had any effect on the solution).
161    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
162      is exceeded
163    o testreport: modify syntax of awk, so that it works also with
164      awk, and not only with nawk and gawk
165    
166    checkpoint61
167    o autodiff
168      Change default for TAF usage by removing argument '-nonew_arg'
169      This changes TAF subroutine argument list (ordering of active var.)
170      Omission of this flag leads to incompatibility w.r.t. TAMC
171      To restore TAMC-compatibility, need following modifs:
172      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
173      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
174      Tested TAF version is 1.9.22
175      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
176    
177    checkpoint60
178    --->>> This is the last checkpoint for which generating the adjoint
179    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
180    --->>> by default.
181    --->>> Future checkpoints will ommit this flag by default.
182    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
183    o pkg/grdchk: Add gradient check to etan0 perturbations.
184    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
185    o pkg/autodiff: more flexibility in zeroadj.
186      model/src: modifying do_oceanic_phys.F accordingly.
187    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
188    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
189      special setup of gmredi for which the adjoint is stable
190      enough for parameter optimization.
191    o bridging the gap between eddy stress and GM.
192      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
193          along with a change in CPP option (now ALLOW_EDDYPSI).
194      -> when using GM w/ GM_AdvForm:
195          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
196          is applied either in the tracer Eq. or in momentum Eq.
197          depending on data.gmredi (intro. GM_InMomAsStress).
198      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
199      The key modifications are in model/src/taueddy_external_forcing.F
200      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
201    
202    checkpoint59r
203    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
204      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
205      fix option to read coriolis(@ cell-corner) from files with CS-grid.
206    o pkg/mnc: add some attributes to standard 1D-coordinate variables
207    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
208      mass points, when using mnc for output
209      - add runtime parameter (missing_value, missing_value_int) to override
210        default (which is the value of getcon('UNDEF'))
211    o pkg/mnc: prepare mnc for the actual use of missing values with the
212      diagnostics package: small fix in mnc_cw_readwrite.template and more
213      initialisation of never used fields
214      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
215      versions
216    o pkg/thsice/thsice_ini_vars.F added default initial values so that
217      thermodynamics sea ice solver does not blow up when some initial fields
218      are missing.
219    o move from external_forcing_surf.F to ini_forcing.F
220      the p-coord. hack consisting in using pLoad to set phi0surf ;
221      update output of tutorial_global_oce_in_p (affected @ truncation level).
222    o Freshen up a bit hs94.1x64x5, notably:
223      remove rotationPeriod and tRef=5*0. (adjoint only), and add
224      exactConserv=.TRUE.
225    o pkg/generic_advdiff:
226      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
227      applies to files where Temperature & Salinity 2nd Order moments are used.
228    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
229      this uses a dynamically allocated internal state data structure
230      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
231      and requires a fortran 90 compiler
232    
233    checkpoint59q
234    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
235       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
236    o Refresh tutorial_global_oce_biogeo, notably:
237      - change bathymetry (put back seamounts in ACC, use hFacs)
238      - change EOS (POLY3 --> JMD95Z)
239      - use Bryan-Lewis vertical diffusivity
240      - use multidimensional advection
241      - remove old virtual virtual in dic pkg, now done through ptracer pkg
242      - change a couple of parameters in dic pkg
243    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
244    o pkg/obcs: change default to OBCSfixTopo = .true.,
245      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
246      - replace "debugMode" with "debugLevel .GE. debLevB"
247    o implementation of TAF directives for gchem,cfc,dic
248    o remove "exp5" (replaced by tutorial_deep_convection).
249    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
250      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
251      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
252      --> changes results in exp4, seaice_obcs
253    o tutorial_deep_convection :
254      update the set-up and increase resolution and domain size ; start
255      from pseudo initial conditions = output at t=120mn in order to see
256      something happening when running testreport.
257    o pkg/seaice: add os7mp as an advection scheme
258                  add check for advection schemes
259                  add a flag for restoring T and S underneath sea ice
260    o pkg/my82: add netcdf-support and diagnostics
261    o thsice pkg:
262      - Now hsMax limits snow height by turning it into ice following
263        flooding scheme (and now conserving energy)
264      - Slight rewriting of the formula in thsice_calc_thick.F
265      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
266      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
267    
268    checkpoint59p
269    o gchem / dic / cfc :
270      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
271      - add new parameter files: "data.dic" & "data.cfc" ;
272      - various re-arrangement in initialisation & header file ;
273      - fix tutorial_global_oce_biogeo for multi-threaded test.
274    o pkg/dic: test for "pickup_dic" file when restarting ;
275      if no pickup-file, can restart with a re-initialised pH (same as it did
276      before) providing pickupStrictlyMatch is set to False.
277    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
278      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
279    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
280      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
281    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
282     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
283       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
284    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
285       scheme to use for vorticty-term ;
286     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
287       (with default selectVortScheme, return to original discretisation)
288     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
289    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
290    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
291      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
292      also fix diagnostics VISCAHW & VISCA4W.
293    
294    checkpoint59o
295    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
296    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
297      move a few statemens out the main loop into separate loops
298    o pkg/shelfice:
299      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
300        (kg/m^2/s), does not break tests, because in verification/isomip,
301        rhoConstFresh=rhoConst (by accident)
302      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
303      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
304        new file model/src/seawater.F, so that they are available for all pkgs.
305      - convert potential temperature into in-situ temperature. This changes the
306        isomip tests => update tests
307    o add a flag writePickupAtEnd (default=true) to be able to suppress
308      writing a pickup at the last timestep
309    o tools/mpack-1.6 :
310      - disable automake (not working) and autoconf (not needed).
311      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
312        also cleaner with much less compilation warnings.
313    o pkg/profiles:
314      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
315      (for "less than 32 characters name" compiler requirement)
316    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
317      conditions that have a different sampling frequency than S/T/U/V obcs
318    o pkg/diagnostics (stats-diags):
319      - fix global Min/Max in case 1 processor get only empty tiles
320    o genmake2: replace (4 times)
321         make genmake_tc_1.o >> genmake_warnings 2>&1
322      with
323         COMM="$CC $CFLAGS -c genmake_tc_1.c"
324         echo $COMM >> genmake_warnings
325         $COMM >> genmake_warnings 2>&1
326      to make genmake2 always see the value of CC as specified in the optfile.
327    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
328      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
329      - modify verification advect_cs test to test SOM-advection on CS-grid.
330    o pkg/ctrl:
331      - Rewrite of ctrl_map_ini_ecco.F,
332        introducing a generic routine (ctrl_map_ini_gen.F).
333      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
334    
335    checkpoint59n
336    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
337      number in dedicate array "hdiag":
338      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
339        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
340      - many small changes (integer format) for large number of diagnostics
341      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
342        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
343    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
344      usingSphericalGrid, this allows to define the rotated grid coordinates
345      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
346      geographical coordinates according to the inverse of the rotation defined
347      by the Euler angles, so that Coriolis parameter and online-interpolation by
348      exf works with the geographical coordinates on XC/YC/XG/YG.
349      Naturally, this feature does not work with all packages, so some
350      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
351      profiles), because there the coordinates are assumed to be regular
352      spherical grid coordinates.
353    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
354      - introduce isopycnal diffusion coefficient control.
355    o tools/adjoint_options:
356      - additional control vector components.
357    o pkg/mnc: have mnc create marginally meaning full coordinate variables
358      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
359    o pkg/mypackage:
360      - add example of read/write pickup for state-var ;
361      - add entry points to the main code for state-vars diags & write-pickup.
362    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
363      transitions for useExfYearlyFields
364      - add new subroutine that determines the file to read from for
365        use*YearlyFields = .TRUE. and .FALSE.
366      - add a verification experiment to global_with_exf that tests
367        useExfYearlyFields with USE_EXF_INTERPOLATION defined
368    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
369      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
370      subroutines (which could be generated from a template, because they are
371      almost identical), for now they are included in obcs_prescribe_read.F for
372      simplicity
373    o pkg/exf:
374      - add a little more diagnostic to exf_interp_read (in analogy to
375        mds_read_field, can be turned off with debugLevel < debugLevA=1)
376      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
377        ugly but fast by unrolling short inner loops, inserting a unroll=8
378        directive in routine lagran, and splitting a loop and making do while the
379        outermost loop (the latter requires the intoduction of index arrays)
380    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
381    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
382      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
383    o verification/seaice_obcs: updated for restart test and latest options
384    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
385      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
386      for now this is only available for the C-grid code and also within
387      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
388    
389    checkpoint59m
390    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
391      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
392    o gad_som : fix flux output (& diagnostics) to have same units as other  
393      advection scheme fluxes (was previously multiplied by deltaT).  
394    o added verification/seaice_obcs both to test seaice open boundaries
395      and to provide an example matlab scrpt for generating them
396    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
397    o pkg/salt_plume: clean up salt_plume_frac.F to
398      remove redundancy in PlumeMethod 1 and 4
399    o pkg/kpp: added saltplume diagnostics
400    o pkg/obcs and pkg/seaice:
401      - do not set uice and vice to zero when OB*icefile are unspecified
402      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
403      - moved seaice tracer obcs after call to seaice_growth
404    o pkg/salt_plume: added various options for salt plume depth
405      criterion and for vertical distribution of the salt
406    
407    checkpoint59l
408    o pkg/ptracers: new version of ptracers pickup:
409      read meta file and write only fields which are needed to restart.
410      ( same logic as main pickup file ; also using pickupStrictlyMatch )
411    o pkg/seaice:
412      - add timescale for melting due to warm mixed layer as a means of
413        setting SEAICE_availHeatFrac more conveniently
414      - add a CPP-flag/runtime parameter check for flooding algorithm
415      - reformulated availHeat in seaice_growth.F to be independent of AREA
416    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
417      unit changes
418    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
419    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
420      SX vector computer.
421    o pkg/seaice:
422      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
423        seaice forcing fields can now be read only through pkg/exf
424      - removed some unused halos
425    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
426    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
427      or U/VICE from U/VWIND before computing U/VSTRESS
428    
429    checkpoint59k
430    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
431      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
432    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
433      all experiments pass when compile with un-initialised var. checking option.
434    o added pkg/salt_plume
435    o script to test restart (for now, in MITgcm_contrib/jmc_script)
436    o pkg/seaice: new read/write pickup version.
437      read meta file and write only fields which are needed to restart.
438      ( same logic as main pickup file ; also using pickupStrictlyMatch )
439    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
440    o lab_sea.hb87: modify the domain & update output.hb87.txt :
441      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
442      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
443      process. Fixed here by closing the domain at the Northern boundary.
444    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
445    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
446      a set of consecutive levels in/from a 3-D array.
447    o pkg/ptracers:
448      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
449      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
450    
451    checkpoint59j
452    o in pkgs: dic, obcs, offline, rbcs:
453      standard way to compute coeff. for time interpolation between 2 time reccords
454      which retains full precision (& make results less dependent on compiler).
455      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
456    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
457      packages instead of reading ice cover and wind speed separately
458    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
459     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
460      to allow to compile customized code before the update)
461    o cleaning-up:
462      - fix CPP instruction syntax in pkg/obcs
463      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
464        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
465      - fix some threads issue in IO parts.
466    o pkg/dic:
467      - add tons of "_d 0" (--> much better testreports !)
468       and then update outputs of tutorial_global_oce_biogeo
469    o pkg/mom_fluxform:
470      add a special version of momentum advection intended to conserve momentum
471      next to a bathymetry step or a coastline edge. (default = off = #undef)
472    o new read/write pickup version:
473      - for now, only implemented for main (mdsio) pickup file.
474      - write out only what is needed to restart; merge pickup_nh , pickup_ph
475        and main pickup together.
476      - read meta file; read only what is needed to restart; stop if a field
477        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
478        if it make sense (even if the restart is not perfect).
479      - if no meta file, assume that pickup to read corresponds exactly to
480        a pickup that would currently be written.
481      - read pickup written in the old format (until checkpoint59i) if it
482        recognizes an old meta file (no field-list).
483      - add a meta file in exp. which starts from a pickup: 2 cases:
484        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
485         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
486        b) a meta file describing the content of the associated pickup file
487         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
488    o pkg/mdsio & pkg/rw:
489      - new routine to read a meta file ; new set of routine to read
490        Multiple-fields file (with meta file).
491    o added open boundary conditions capability for seaice
492        HSNOW, HSALT, UICE, and VICE
493    
494    checkpoint59i
495    o adjoint:
496      * fix multiDimAdvection adjoint
497        (partial recomputation problem by TAF for fVerT(:,:,kDown)
498        and comlev1 size definition (maxpass vs. max. number of tracers)
499      * verification/global_ocean.90x45x15 adjoint now tests
500        NLFS and multiDimAdvection using DST3 (=30)
501      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
502    o pkg/kpp: add "_d 0" to real constant (if missing);
503      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
504      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
505    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
506      for internal parameters related to restart process (formerly from PARAMS.h)
507      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
508    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
509      as argument. (only atm2d & obcs write_pickup have not yet been updated)
510    o pkg/monitor:
511      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
512      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
513      - account for deep Atmosphere factor and density factor (anelastic)
514    o added open boundary conditions capability for seaice HEFF and AREA
515    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
516      thermodynamics
517      - requires a little reorganization, which affects the testreport results
518        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
519        so that now the conservative form is tested
520      - add a few comments
521    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
522    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
523    o add new diagnostics to seaice: advective, diffusive fluxes (only for
524      multidim-advection, for scheme 2 they are not filled) and transports,
525      thermodynamic growth rates
526    o change units of EmPmR (inside the code, + within coupling interface)
527      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
528      Affects results @ truncation level (cg2d match) and update output of
529       experiments: lab_sea(6), global_ocean.90x40x15(10),
530      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
531      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
532      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
533      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
534    
535    checkpoint59h
536    o pkg/exf:
537      - improve vectorization by moving if-statement out of loops in
538        exf_mapfields, exf_radiation
539      - exf_bulkformulae.F: introduce 2D fields and vectorize code
540    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
541    o testreport:
542      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
543        monitor & update offline_exf_seaice exp. output.
544      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
545    o pkg/seaice:
546      - bug fix in the evp solver: boundary conditions were affected be
547        masking of zMax/zMin (changes results)
548      - minor bug fix in boundary conditions in seaice_calc_strainrates
549        (changes results for no_slip)
550      - seaice_lsr.F: make interpolation of eta dependent on boundaries
551      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
552      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
553        stress formulation and no-slip boundary conditions
554    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
555      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
556    o pkg/seaice: a first HSALT time stepping equation has been checked in
557    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
558      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
559      without requiring DO-IF statements
560    o pkg/thsice:
561      use continuous power-law function for partition of energy between lateral
562      melting/freezing and thinning/thickening ; old code using step function
563      still available with #undef THSICE_FRACEN_POWERLAW
564      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
565    o testreport: change AD testing : check against results/output_adm.txt
566      using same scripts as for forward test.
567    
568    checkpoint59g
569    o adjoint testing: in preparation for changing testreport:
570      - output format: cost and grad written on separated lines
571      - ad output results in directory "results" (instead of "results_ad")
572    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
573    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
574    o pkg/ecco: allow user defined cost function contributions
575    o testreport:
576      Allow to choose (per experiment) the list of tested output variables
577       and the main variable (used to issue a pass/FAIL ) ;
578      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
579      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
580      Also modify printing of summary:
581       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
582       b) echo the list of tested variables in the individual summary.txt of
583          each experiment.
584    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
585      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
586      (but still depend on the tile decompostion of the domain).
587    o pkg/seaice: change a discretization detail to make the B-grid code
588      "more symmetric". This change is likely to remove all "ridges/leads" that
589      where quasi-aligned with the grid in B-grid solutions. It may also be
590      the solution to the stress coupling issues with the B-grid.
591    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
592      remove .cvsignore from input dir. (since testreport no longer run here).
593    o pkg/thsice:
594     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
595     - fix reshaping of sea-ice just after advection:
596       melt all the ice only if ice-volume is too small.
597     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
598       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
599     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
600    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
601      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
602    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
603      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
604      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
605      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
606      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
607      -> update output.txt
608    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
609     this affects truncation error: -> update output.txt of exp:
610      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
611      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
612    
613    checkpoint59f
614    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
615    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
616      a bounded range (in forward mode)
617    o pkg/ecco, ctrl, autodiff and mom_common:
618     internal parameter controls, completements of implementations
619    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
620    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
621      (not seem any difference in testing results).
622    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
623       at face corners.
624    o pkg/generic_advdiff:
625     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
626      loop range indices for computing vertical advection tendency
627      and do the calculation in the interior only (no overlap) ;
628      for now, only implemented for SOM advection (to save CPU time).
629     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
630    o exch2 adjoint
631      First set of changes:
632      - add exch2 hand-written adjoint templates
633      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
634        This will require cleanup in pkg/autodiff/*.F
635        (changed routines currently kept separate in verif. code/)
636      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
637        that used to hide exch2 or cubed-sphere specific code
638        (commented via 'cph-exch2')
639    o pkg/seaice
640      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
641    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
642       output of global_ocean.cs32x15.thsice .
643    
644    checkpoint59e
645    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
646      for B-grid vector (not yet tested) and C-grid vector (<- only used
647      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
648    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
649      (#ifdef ALLOW_SALT_PLUME)
650    o gather_2d/scatter_2d: removed halo regions
651    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
652      scheme and the corresponding test case (under front_relax dir). For now,
653      only available with Skew-flux form and not yet tested in realistic set-up.
654      adjoint: store directives updated, but gradient checks deteriorated,
655      so maybe GM/Redi adjoint is now broken.
656    o seaice adjoint
657      * add AREA, HEFF, HSNOW as control variable
658        (should not change lab_sea results)
659      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
660    o pkg/seaice:
661      * added computation of saltFlux in seaice_growth;
662        For time being, sea ice salinity is assumed constant
663        contribution of snow flooding to freshening of sea ice is neglected.
664        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
665        defaults to 0.0 in order to maintain backward compatibility.
666        Typical values for SEAICE_salinity are 4 to 10 g/kg.
667      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
668      * added SEAICE_availHeatFrac, which specifies fraction of surface level
669        heat content used to melt or grow ice
670      * commented out cap of HICE: it helps keep ice thinner
671      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
672      * applied OBCS T/S mask to HEFFM sea ice mask
673    
674    checkpoint59d
675    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
676     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
677     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
678    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
679     and change default value of parameter "GM_Small_Number";
680     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
681       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
682       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
683    o pkg/ecco: cost function when applying pkg/smooth to controls
684    o pkg/ctrl: add forcingPrecond run time parameter
685    o pkg/seaice:
686     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
687     - fix bug in metric terms of u-equation in LSR solver (implicit part),
688       changes verification/lab_sea
689     - rearrange implicit part of u-equation in LSR solver to make it easier to
690       read, understand, and debug. This causes changes at the truncation level.
691     - fix (serious) bug in the boundary conditions (sign error in the implicit
692       part) of the LSR solver. Changes all LSR results.
693     - fixed problem with HSNOW initialization to avoid thick snow when AREA
694       is initilized with small values - does not change lab_sea results.
695     - added HsnowFile initialization capability
696    o pkg/smooth: addition to model/src and pkg/ctrl so allow
697     initialization of pkg/smooth and application to control vector
698    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
699    o dependencies: pkg/profiles requires pkg/cal
700    o pkg/profiles:
701     - added option ALLOW_PROFILES_GENERICGRID
702         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
703         that interpolation information (grid points and coefficients) is provided
704         within the netcdf input files.
705         -> sample matlab scripts can be found in MITgcm_contrib/gael
706         that allow you to prepare netcdf input files.
707     - also modified: cleaner include statements, cleaner error print statements,
708       cleaner stops when error, and more tests of the netcdf input files consistency.
709    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
710    o pkg/seaice:
711     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
712       requires a new routine: seaice_diagnostics_fill.F
713     - make sure that seaice does not move if not forced (pressure replacement
714       method, Hibler and Ip, 1995), changes results
715     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
716     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
717       It is turned off by default (=-1.), because it changes the results.
718     - make it possible to read AREA from a file, too.
719    
720    checkpoint59c
721    o add S/R and diagnostics for oceanic mixed-layer depth
722    o move GMRedi call after all vertical mixing schemes (including KPP)
723    o pkg/thsice:
724     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
725      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
726    o pkg/obcs:
727     - bug fix for balance code
728    o pkg/seaice:
729      - allow values of SEAICE_elasticParm > 1
730      - add new parameter SEAICE_evpTauRelax as an alternative
731        to SEAICE_elasticParm
732      - make lsr boundary conditions free slip (by default), changes result
733      - add code for no slip boundary conditions for lsr
734      - set minimum of zeta to zero (and not 4e8) (changes results)
735      - add a cap on AREA after advecting AREA if seaice_growth is not called
736    o change calculation of Visbeck K:
737      - no longer depend on tapering scheme; instead, compute slope (limited
738        by GM_maxSlope). this is equivalent to what was comuted before with
739        clipping or linear tappering.
740      - fix vertical averaging (wrong by 1/2 level)
741      - leave the old version (but will not be maintained) within
742        #ifdef OLD_VISBECK_CALC / #endif
743      - update output of exp. ideal_2D_oce
744    o change error catch in calc_r_star to improve vectorization
745    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
746      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
747    o adjoint:
748      Re-organized adjoint checkpointing according to Matt Mazloff
749      (but with modifs/completions/cleanups)
750      Storing is now bundled into large arrays to optimized I/O
751      (and second step in cleanup of the_main_loop)
752    
753    checkpoint59b
754    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
755      - export/import (between ocean & coupler) fields needed for ocean DIC.
756    o pkg/seaice:
757      - get rid of three more exchanges seaice_calc_viscosities (required
758        different loop boundaries in seaice_lsr and seaice_ocean_stress)
759      - bug fix in seaice_ocean_stress (update of lab_sea required)
760      - reduce loop boundaries to necessary minimum also in seaice_evp
761      - go back to the old way of computing deltaC/Z as the adjoint likes that
762        better
763    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
764      passive tracer to an Age Tracer) + update output.txt
765    o pkg/exf:
766      - implement A-grid / C-grid selection for wind-stress input files.
767      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
768      for now, in exf_bulk_largeyeager04.F only :
769      - change implementation for case where windspeed + 2. components wind-stress
770        are read-in. AND use rhoConstFresh to convert evap.
771    o pkg/seaice:
772      - use correct EXCH_UV for wind-forcing (on A-grid).
773      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
774        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
775    o pkg/exf:
776      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
777      EXF_INTERPOLATION:
778      - merge global_with_exf/code version of exf_interp_read.F
779        to the main code ;
780      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
781        reading the file ; Important: This options needs to be defined to recover
782        previous code.
783        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
784      - no longer loose real*8 precision along the way when using exf_iprec=64.
785    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
786      - change discretisation of evp-solver in order to avoid another exchange
787        (changes lab_sea) and clean up a little
788      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
789        help the adjoint (this also changes the results slightly)
790      - add a few "_d 0" where they had been missing in seaice_evp.F
791      - cleaning up: remove unused seaice_calc_rhs.F
792    o pkg/exf: some cleaning-up:
793      - change various "constants" into runtime parameters
794      - cleaned-up Large&Yeager04 routine which should eventually
795        replace exf_bulkformulae.F (changed names of S/R and CPP)
796        and merged various ALLOW_ATM_WIND options
797     only used with thsice pkg (in thsice_get_exf.F):
798      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
799        which are used when useStabilityFct_overIce=TRUE (= the default)
800      - change default values of ice & snow emissivity and scale downward LW
801        by ice & snow emissivity.
802    o pkg/thsice:
803     fix few little problems, in thsice_calc_thickn.F:
804      - growth vertically (and not laterally) if iceFrac == iceMaskMax
805      - melt only laterally if hIce < hThinIce (as the comments say)
806      and in thsice_extend.F:
807      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
808      - start to form ice as soon as the minimum ice-volume is reachable.
809     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
810      and cpl_aim+ocn
811    o pkg/kpp
812     - move computation of surface related input fields to KPP into a new
813       subroutine kpp_forcing_surf.F
814     - remove wrong (within bi,bj loops) EXCH calls.
815     - little cleaning (add argument myThid in last position, cvs header ...)
816     - for now, fix conservation problem by exchanging KPPviscAz (may not
817       be the best fix)
818    o pkg/seaice
819     - check for inconsistent evp parameter/cpp-flag combination
820     - remove leftover errIO flat for obsolete name list error handling
821    o OpenAD
822     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
823    
824    checkpoint59a
825    o pkg/seaice: some parameter clarifications and a little bit of clean up
826    o pkg/thsice: rename run-time parameters:
827       himin       -> hIceMin
828       himin0      -> hThinIce
829       hihig       -> hThickIce
830       i0          -> i0swFrac
831       transCoef   -> bMeltCoef
832       frac_energy -> fracMelting
833      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
834       with default values (for now) that do not change the results.
835      remove old version of thsice vars advection in pkg/seaice.
836    o in FFIELDS.h:
837      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
838      - make pLoad & sIceLoad always available (but still only used if
839         ATMOSPHERIC_LOADING is #define).
840    o pkg/kpp: replaced _KPP_RL with _RL
841    o bug fixes for vertical diffusivity computations when both KPP and
842        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
843        are no longer updating the vertical diffusivity array
844        (passed as argument) but are (re-) setting those arrays.
845    o pkg/seaice: fix bug in evp solver, while doing that
846      - change (improve?) discretization of stress computations for both
847        cgrid-lsr and evp solver
848      - add a new routine to compute strain rates
849      - the above changes lab_sea results
850      - add no slip conditions for evp solver (off by default), lsr-version
851        may follow
852      - fix exchange for shear at Z-points (does not change lab_sea)
853      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
854        (to force the user to pick a time step since there is not "safe" way
855        of choosing it)
856      - add principal stress diagnostics
857      - rearrange fields for evp a little to avoid having to call a: too many
858        exchanges and b: exchanges for stress trensor components which we do
859        not have.
860      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
861        of evp, complete rewrite for lsr case (latter is does not yet work
862        in all cases)
863    o pkg/kpp: add code to have mixing in shelf ice caverns
864      - add myThid to all kpp routines (long overdue)
865    
866    checkpoint59
867    o pkg/exf:
868      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
869        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
870      - move exf header files from lower_case.h to UPPER_CASE.h ;
871        add missing cvs Header & Name
872      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
873      - add namelist param. selectStressGridPosition, exf_monFreq
874      - retire many _CLIM routines, and remove data.exf_clim
875        + params moved to data.exf
876        + climsst, climsss now handled by exf_set_gen, i.e.
877          climss?period=0 refers to constant field,
878          climss?period=-12 to monthly forcing
879      - split up namelists in data.exf
880    o pkg/seaice:
881      - remove seaice_exch and seaice_exch_uv
882      - remove superfluous exchange of theta
883      - add myThid to seaice_budget_ocean/ice
884      - add new interface for atmospheric wind forcing (C-grid only)
885        + new routine
886        + two new field (taux, tauy for stress over ice)
887        + removed one global field (DAIRN) for C-grid case only
888    o pkg/thsise
889      - 2nd set of modifs for thsice adjoint in conjunction with exf
890    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
891    
892    checkpoint58y_post
893    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
894      vertical diffusivity, similar to that in MOM4; turned on using
895      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
896      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
897    o Added capability for 3D specification of background vertical diffusion
898      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
899      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
900      "data" file that contains the 3D vertical diffusivity coefficients.
901    o ice dynamics (pkg/seaice) with thsice thermodynamics:
902      - add code within pkg thsice to advect & diffuse sea-ice fields
903      similar to (and will replace) what has been added in  seaice_advdiff.F,
904      but: - conserving Mass, Heat & Salt.
905           - better when using non-linear advection scheme (not yet fully tested)
906           - can also be used in atmospheric set-up (for now, only the diffusion).
907    
908    checkpoint58x_post
909    o IO option for global-file compact format:
910      - add options when generating topology (utils/exch2/matlab-topology-generator)
911      - add I/O capability (pkg/mdsio).
912      - adapt utils/matlab/rdmds.m to read this format.
913      for now long-line format not yet supported by pkg/mdsio (& exch2).
914    o shelfice: add a few diagnostics
915    
916    checkpoint58w_post
917    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
918      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
919      (and replace horiVertRatio in NH code).
920      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
921                         and tutorial_plume_on_slope (sensitive to truncation)
922    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
923      directly to drive seaice model (C-grid only)
924    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
925     - reintroduce computation of wind from stress,
926     - compute tau (in exf_bulkformulae.F) from windstress averaged to
927       mass points to avoid tau = 0
928     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
929    o rdmnc.m: make it work with "global" files created with gluemnc
930    o rdmnc.m : some improvements in dealing with singleton dimension
931      (tested on all testreport mnc output files).
932    o genmake2: disable pkg/profiles if netcdf test fails.
933    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
934    o move call to cal_readparms up to make calendar parameters/variable available
935      to all packages
936    
937    checkpoint58v_post
938    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
939      useDynP_inEos_Zc tested.
940    o pkg/exf: changes to properly interpolate/mask/scale initial fields
941    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
942      and portions thereof.  See read_cs.txt for description and examples.
943    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
944      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
945      following the great-circle arc between those 2 points.
946    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
947      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
948    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
949     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
950     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
951     - still needs work (not working with some options ; efficiency to improve)
952       and serious testing.
953     - use this scheme for temperature & salinity in 2 advection test exp.:
954       advect_xy & advect_xz, respectively.
955    
956    checkpoint58u_post
957    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
958    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
959    o testreport: add option "-skipdir" to skip some test.
960    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
961      momentum calculation.
962    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
963    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
964      remove checkpoint.F and the_correction_step.F (no longer used);
965      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
966    o add option (linFSConserveTr) to correct for tracer source/sink due to
967      Linear Free surface
968    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
969    o pkg/thsice: fix reading mnc-pickups
970    
971    checkpoint58t_post
972    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
973    o pkg/mdsio:
974     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
975       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
976       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
977     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
978     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
979       either MDS_READ_FIELD or MDS_WRITE_FIELD )
980     - new S/R (to replace MDSWRITEMETA), which allows to write more
981       informations (variable names, time ...) to meta files.
982     - modify rdmds.m to give back the meta file content.
983    o pkg/diagnostics: change vertical interpolation to be safer, and more
984       flexible (define p-levels to interpolate to in data.diagnostics);
985      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
986       diagnostic pointer.
987    o pkg/seaice: more cleaning up of seaice_growth, added many comments
988    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
989    o fix multi-category seaice:
990     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
991       SEAICE_MULTICATEGORY
992     - fix short wave heat flux
993    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
994       and allow to use EVP solver. Change forward lab_sea: test both EVP
995       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
996    o Initial check-in of lab_sea adjoint
997      (very similar to natl_box_adjoint/code_seaice)
998      * used C-grid and EVP solver
999      * used KPP, GM/Redi
1000      * uses inAdExact=.TRUE.
1001      * gradient checks fail for both ADM and TLM
1002        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1003        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1004        issue is related to forward mismatch between g77 an ifort
1005    o pkg/seaice: overhaul of thermodynamics
1006     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1007     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1008     - move a few global fields out of SEAICE.h into seaice_growth.F and
1009       make them 2D (FICE/QNETO/ ...)
1010     - remove FO (it is the same as QNETO)
1011     - introduce a few local fields to avoid modifying external fields such
1012       as atemp, etc.
1013    
1014    checkpoint58s_post
1015    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1016      changed exf_set_gen.F so that
1017        genperiod=0 means input file is one time-constant field and
1018        genperiod=-12 means input file contains 12 monthly means
1019    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1020      this affects truncation error ; generate new output file for exp. which
1021      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1022        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1023        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1024        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1025        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1026        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1027    o start implementation of deep-atmosphere and anelastic formulation
1028    o verification: remove 2nd copy of input files and use script "prepare_run"
1029      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1030    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1031    o profiles: fix for multithreaded case
1032    
1033    o diagnostics: rename few diags:
1034      s/'PRESSURE'/'RCENTER '/g
1035      s/'TICE    '/'oceFreez'/g
1036      s/'TAUX    '/'oceTAUX '/g
1037      s/'TAUY    '/'oceTAUY '/g
1038      s/'SWFLUX  '/'oceQsw  '/g
1039      s/DIFx/DFxE/g
1040      s/DIFy/DFyE/g
1041      and add few ocean-forcing diagnostics:
1042      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1043    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1044      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1045      as actual snow thickness.  It now refers everywhere to effective snow
1046      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1047    
1048    checkpoint58r_post
1049    o modifications to pkg/seaice/growth.F, which change results of
1050      lab_sea experiment: fixes pertain to melting snow over open water, to
1051      masking EVAP under sea ice, and to using the correct AREA variable for
1052      computations of EVAP, PRECIP, HSNOW, and GHEFF
1053    o add ability to read bathy, salt, and theta using MNC (off by def)
1054    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1055      both are turned off by default and do no change any results
1056    o seaice advection with pkg/thsice: a step toward the use of non-linear
1057      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1058    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1059      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1060      in natl_box (affects results @ truncation level: update output.txt)
1061    o multi-threading and IO:
1062      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1063      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1064        (needed to work with SingleCpuIO): tested in all verif. exp.
1065    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1066      affects the results (but none of the verification test uses this scheme).
1067    o Adding some pkg/diagnostics capability to pkg/seaice
1068      (will certainly be subject to changes)
1069    o ctrl: adding new control variables:
1070      lwflux, lwdown, evap, snowprecip, apressure, runoff
1071    
1072    checkpoint58q_post
1073    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1074      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1075      high_res_cube configuration by 4% on Columbia.
1076    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1077      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1078      dynamical allocation (seems to work in multi-threaded).
1079    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1080      single CPU io) so that TAF does not have to see EESUPPORT.h
1081    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1082    
1083    checkpoint58p_post
1084    o obcs: stop if obcs is used with useCDscheme = .true.
1085    o shelfice:
1086     - fix a sign error so that no slip at shelfice interface works
1087     - remove stop for combination non-hydrostatic code and shelfice. That does
1088       not mean, that the results are correct, but at least they are numerically
1089       stable
1090    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1091    o added adjoint exch routined for all exch*3d* routines
1092      and updated flow directives
1093    
1094    checkpoint58o_post
1095    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1096      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1097    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1098      and clean-up reading/writing of pickup files.
1099    o fix local version of read/write pickup (NH part) in rotating_tank/code
1100    o simplify EXCH interface:
1101     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1102     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1103    o added the regrid package
1104    o shelfice:
1105     - add a simple boundary layer scheme to reduce noise
1106     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1107    
1108    checkpoint58n_post
1109    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1110       local variable (not in common block).
1111    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1112      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1113      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1114        to work with SingleCpuIO.
1115    o add "_d 0" to real constant of pkg/cfc subroutines ;
1116       update exp. cfc_exemple & tutorial_cfc_offline output files.
1117    o multi-threading and IO:
1118      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1119        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1120      - barrier before and after reading.
1121      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1122      - avoid using MDS_WRITELOCAL for LAND pkg output.
1123      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1124        common-block variables ; Allows multi-threading with master-thread IO.
1125    o change default MAX_NO_THREADS from 32 to 4 ;
1126      and stop cleanly when MAX_NO_THREADS is too small.
1127    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1128    
1129    checkpoint58m_post
1130    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1131       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1132    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1133       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1134       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1135    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1136        add MITgcm_tutorials (= code + all the tutorials)
1137    o ecco, option to compute cost for total ssh (mean+anom)
1138    o consistent with addition of ptracer and ssh in pkg/profiles
1139    o profiles: adding ptracer and ssh
1140    o testreport: change multi-test output-file name
1141      (from output.txt.{name} to output.{name}.txt)
1142    o profiles: now ok for mutli-tiles case
1143    o seaice: add 4 parameters for different advection schemes for area,
1144      (effective) seaice thickness, enthalphy, and snow height. Their default
1145      is the standard parameter SEAICEadvScheme
1146    o calc_gw:
1147     - add cosFacU in zonal viscous flux (harmonic.visc.).
1148     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1149       of tutorial_plume_on_slope.
1150    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1151    o calc_gw: true flux-form, account for horizontal grid spacing.
1152      update rotating_tank results, but not plume_on_slope (affected at
1153      truncation level, 11 digits).
1154    
1155    checkpoint58l_post
1156    o calc_gw:
1157     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1158     - remove side-drag for now (need to fix it); update plume_on_slope results.
1159     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1160    o commit code to make SST/SSS weights spatially variable
1161      (based on either variable in-situ or variable initial T/S weights)
1162    o pkg/ecco:
1163      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1164        now based on horizontally varying weights wthetaLev, wsaltLev
1165      * cost_averagesflags now returns year indices in addition to day, month
1166      * sflux balance is performed on annual basis
1167        (sflxumm, sfluxmm2, bal_sfluxmm)
1168      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1169        including separate counting and multipliers
1170    o pkg/rbcs
1171      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1172    
1173    checkpoint58k_post
1174    o testreport:
1175     - always build in dir. "build" (if not there, mkdir build instead of building
1176       & running in input)
1177     - run in dir run (if it exists), in build otherwise.
1178     - call prepare_run (if input/prepare_run exists)
1179     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1180    o pkg/exf modifications to interpolation and rotation routines for more
1181       reasonable treatment of North Pole singularity: for tracers North Pole
1182       value is set to northernmost zonal-mean value, for zonal velocity it is
1183       set to zero, and for meridional velocity it is set to northernmost value.
1184    o pkg/exf/exf_check_range.F
1185     - add tile index to diagnostics and move stop statement to the very
1186       end of the routine.
1187    o pkg/diagnostics: (diagnostics_main_init.F)
1188      define title of isomorphic variables according to the current config.
1189    o pkg/thsice with pkg/seaice dynamics:
1190    - fix domain of computation (interior only, required for exf) and do exchanges
1191    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1192    o towards a standard way of dealing with multi-threading in MONITOR
1193      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1194    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1195       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1196    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1197    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1198    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1199       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1200    o tracer advection:
1201     - clean-up and simplify calc_common_factors.F
1202     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1203       advection subroutine (but still not used within DST advection S/R)
1204    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1205    
1206    checkpoint58j_post
1207    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1208      from file (collects calls previously in FORWARD_STEP)
1209    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1210    o adjoint store dir. adjusted accordingly
1211    o genmake2
1212      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1213    
1214    checkpoint58i_post
1215    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1216      on wind stress (SEAICEstressFactor defaults to 1.)
1217    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1218      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1219    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1220      on CS-grid: no longer loosing mass.
1221    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1222    o pkg/ggl90: fix sloppy output and fix a bug
1223    o pkg/seaice: added SEAICEuseEVPpickup parameter
1224      - Set to false in order to start EVP solver with
1225        non-EVP pickup files when using SEAICEuseEVP
1226      - fix sign error in diffusion in seaice_calc_rhs
1227    
1228    checkpoint58h_post
1229    * Modifications for bottom topography control
1230      o replace hFacC by _hFacC at various places
1231      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1232      o add non-self-adjoint cg2d_nsa
1233      o update autodiff support routines
1234      o re-initialise hfac after ctrl_depth_ini
1235      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1236    * Adding verification for 5x5 box (4-layer) bottom topography control
1237    
1238    checkpoint58g_post
1239    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1240       used for mean seasonal cycle, mean diurnal cycle); add an example
1241       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1242    o pkg/ggl90:
1243      - add parameter (minimum surface kinetic energy)
1244      - fix bug (avoiding division by zero)
1245    o couple pkg/thsice to pkg/seaice:
1246      - modify advection in seaice to accomodate new scalar fields to be advected
1247      - only muliDimAdection scheme work with seaice/thsice
1248      - mapping of thsice-variables to seaice-variables, back and forth
1249      - does not break the verification experiments, but does not give the
1250        desired results either
1251    o pkg/seaice
1252      - make (default) second order advection a bit less confusing?
1253    
1254    checkpoint58f_post
1255    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1256      to pkg/seaice):
1257      - new routines thsice_map_exf and thsice_get_exf provide the interface
1258      - add an additional formal parameter to thsice_solve4temp
1259    o pkg/exf:
1260      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1261      - correct Stefan-Boltzmann constant
1262      - new parameter for longwave surface emittance
1263      - separate some stuff from exf_bulkformulae into new routines  
1264        exf_radiation, exf_wind
1265      - add new parameters and constants: longwave emissivity for ocean, ice
1266        and snow, evaporation parameters over ice
1267      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1268        either wind from stress or stress from wind
1269    o pkg/thSIce:
1270    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1271    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1272       and THSICE_CALC_THICKN
1273    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1274    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1275      to make debugging easier.
1276    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1277    o pkg/bulk_force:
1278      - clean-up comments and parameters ;
1279      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1280    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1281      generate new output for test-experiment: aim.5l_cs.thSI
1282    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1283      testreport accordingly
1284    
1285    checkpoint58e_post
1286    o SEAICE_CGRID adjoint done
1287    o R_STAR adjoint implemented.
1288      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1289      * need to sort out init. of h0facc, etc.
1290    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1291      to be able to use it in pure forward.
1292    
1293    checkpoint58d_post
1294    o upgrade simple test-experiment to tutorial example:
1295     step.1: duplicate the experiment and (step.2) will remove the old copy.
1296      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1297      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1298      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1299      tutorial_global_oce_biogeo    <- copy of dic_example
1300      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1301      tutorial_plume_on_slope       <- copy of plume_on_slope
1302      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1303      tutorial_global_oce_optim     <- empty for now (David ?)
1304      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1305     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1306    o correct a sign problem in cost_scat.F
1307    o obcs and ptracers: fix boundary conditions for advections schemes
1308      with larger stencil
1309    o thsice adjoint: start
1310    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1311      completeness
1312    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1313      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1314    o ptracers adjoint:
1315      * avoid extensive recomputatations
1316      * fix missing re-init. of gptr (missed by TAF)
1317    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1318      me to turn off the excessive output to STDOUT that this package produces
1319    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1320      and add those terms in Vector-Invariant formulation.
1321    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1322      if the control period (xx_hfluxperiod etc) is 0
1323    o in profiles pkg, clean routines and fix details
1324    o in ecco pkg, reading ssh data:
1325      fix problem in case the model does not start at iter0=0
1326    o fix mnc-pickup/restart for ptracers
1327    o new package prifiles:
1328      code to compute profile-based cost by Gael Forget
1329      (modifs in ecco, ctrl, autodiff)
1330    o Benign bug fix in initialization (spotted by M. Mazloff) of
1331      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1332    
1333    checkpoint58c_post
1334    o adjoint: finish NLFS adjoint and provide reference output in
1335      verification/global_ocean.90x40x15/results_ad_nlfs
1336    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1337      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1338      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1339      with SEAICE_CGRID defined.
1340    o move calendarDumps from "data" to "data.cal" and clean-up the code
1341      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1342    o add useEXF & useCAL flags (for now, set in hard-coded way)
1343    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1344      (were missing in NH mode, and wrong in quasihydrostatic mode).
1345      waiting for Chris updated version of calc_gw to add those CALLs.
1346    o fix bug in quasihydrostatic S/R ;
1347      add a test for this option: global_ocean.90x40x15.qshyd
1348    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1349      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1350    o add on/off flag useOffLine for package OFFLINE
1351    o seaice:
1352      - modify advection so that it works also on the C-grid
1353      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1354        problem in multi-tile runs with C-grid
1355      - add flags for clipping ice velocities and/or masking solver forcing
1356      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1357        C-grid solver
1358      - added a few comments to seaice_diffusion.F
1359      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1360        are now exclusive)
1361      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1362        required re-ordering the code a little:
1363       + make DAIRN global variable (defined in SEAICE)
1364       + move computation of the viscosities eta and zeta into a new separate
1365         routine (because I need to recompute them in seaice_ocean_stress.F)
1366    
1367    checkpoint58b_post
1368    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1369      update output.txt of exp. aim.5l_cs.thSI
1370    o various mnc cleanups and improvements:
1371      + shrink lookup tables by factor of ~4
1372      + better error reporting when running out of lookup space
1373      + able to handle longer path/file names (up to 500 chars)
1374    o adjoint:
1375      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1376      - TBD: "hidden" mom_vecinv recomp. in dynamics
1377    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1378     (allow to differentiate between forcing components using new integer flags:
1379      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1380     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1381    o ecco
1382      - enable trend removal from SSH anomaly obs.
1383    o adjoint
1384      - a fix for PmEpR when #undef EXACT_CONSERV
1385      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1386      - try to fix "hidden" recomp. in forward_step for NLFS
1387        (NLFS seems broken sometimes after I checked it in)
1388    o seaice:
1389     - add c-grid version of the dynamic solver:
1390       + three new routines that are the c-grid substitute lsr, dynsolver
1391         and ostres
1392       + put a few fields that were local to dynsolver into global common
1393         blocks, so that I can move the computation of stresses etc into
1394         seaice_lsr (saves coding but may break the adjoint).
1395     - replace more hardwired parameters by runtime parameters
1396     - add ice masks that mask the rhs of the implicit solvers where there
1397       is no ice (commented out in seaice_dynsolver, because i am not sure
1398       if this works properly), eventually this should replace the clipping
1399       of ice velocities in seaice_dynsolver to +/-40cm/s.
1400    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1401      include it only where its needed
1402    o move balancing of fluxes before the call of external_forcing_surf
1403    o seaice:
1404      - correct units of turning angles (now they are really in degrees)
1405      - move computation of GWATX/Y out of main routine into dynsolver
1406      - initialize GWATX/Y in seaice_init
1407    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1408      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1409    o seaice: add runtime flags for turning angles (default to zero)
1410    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1411      and trend from exf forcing and ctrl control adjustments
1412    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1413      (since checkpoint57x_post)
1414    o change the default rotation period to 86164.s = the Earth rotation
1415    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1416      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1417    o seaice advection: add code for choosing between the default (2nd order
1418      central differences) and multiDim advection schemes provided by
1419      pkg/generic_advdiff
1420    o seaice:
1421      - removed all references to SEAICE_GRID.h fields from
1422        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1423        (cubed-sphere configuration will change a little)
1424      - grid computations in seaice_init are obsolete now.
1425      - cleaned up code a little so that is easier to read (hopefully).
1426      - added new (better?) discretizations of default advection and diffusion
1427        (turn on with SEAICEuseFluxForm)
1428      - replace 1 in 3d global fields by kSurface in growth.F
1429      
1430    checkpoint58a_post
1431    o seaice:
1432      - bug fix in advect.F
1433    o shelfice:
1434      - separate shelfice load anomaly from pload (breaks with time
1435        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1436        Its default is 0., but it may be computed more cleverly from (unknown)
1437        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1438        done offline. A good approximation of the pressure load anomaly is
1439        necessary to avoid large initial adjustment processes underneath
1440        deep-reaching shelfice.
1441      - small fix in ISOMIP shelfice_thermodynamics
1442      - add more sophisticated thermodynamics of Hellmer (1989), this is
1443        now the default
1444      - give a few constants more intuitive names
1445    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1446      if bulk formulae are used in long integration (especially EmPmR). Turn
1447      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1448      if balancePrintMean, the imbalance that is substracted is printed to
1449      STDOUT.
1450    o fix bug (typo) in obcs_apply_eta.F
1451    o add a new package shelfice which enables us to model the circulation
1452      underneath shelf-ice with draughts of hundreds of meters.
1453     - works
1454     - to do: + include improved thermodynamics
1455              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1456                instead of new field kTopC
1457              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1458                instead of new field R_shelfIce and new code in ini_depth.F
1459                and ini_mask_etc.F?
1460              + adjust vertical mixing schemes?
1461    o seaice pkg:
1462     - add a cpp-flag to include a simple formula for a salinity dependent
1463       freezing point of sea water at the surface
1464     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1465       meridional stresses are now different (and hopefully correct)
1466    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1467       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1468       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1469    o pkg/diagnostics: add options and parameters for regional-statistics
1470       diagnostics ; define regions by reading a region-mask from a file
1471       (might add other options later)
1472    o pkg/bulk_force:
1473     - add option and parameters to use AIM surface-flux formulae.
1474     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1475       others forcing fields (defined in PARM05, parameter file "data") are loaded
1476       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1477     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1478     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1479     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1480       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1481     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1482    
1483    checkpoint58
1484    o add "--embed-source" option to genmake2 which, when the supporting
1485      tools can be compiled (as determined by genmake2) will turn on the
1486      embed_files package which then embeds the entire MITgcm source code
1487      (*.[fFhc] + Makefile) used for the build within the executable
1488      - requested by CNH but off by default
1489      - adds a paltry <9MB to the mitgcmuv executable in most cases
1490      - only writes the output when useEMBEDSRC in eedata is true
1491    o clean up 3-dim. relaxation codes:
1492      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1493      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1494      * Thanks to Tom Haine for testing!
1495    
1496    checkpoint57z_post
1497    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1498      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1499    o fix the pickup behavior for obcs in combination with ptracers
1500    o fix a bug in ptracers_external_fields_load
1501    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1502      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1503    o transfered surface NH pressure to eta field (if exactConserv).
1504    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1505         and update lab_sea output.txt file.
1506    o completing 3-dim. relaxation code: additional term
1507         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1508      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1509      * At compile time, in "EXF_OPTIONS.h" set
1510          #define  ALLOW_CLIMTEMP_RELAXATION
1511          #define  ALLOW_CLIMSALT_RELAXATION
1512      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1513          tauThetaClimRelax3Dim = 15552000.0,
1514          tauSaltClimRelax3Dim  = 15552000.0,
1515      * 3 cases:
1516          1) Use a constant-in-time 3-dim. field
1517          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1518          3) Real-time relax. to time-evolving prescribed field
1519    o Adding Laplacian-type smoothness constraint on
1520      initial and boundary (forcing) controls (ic, bc)
1521      * enable at compile-time via
1522        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1523      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1524      * Absolute scale somewhat unclear so far
1525      * no area weighting was included since no other cost term does so far
1526    
1527    checkpoint57y_post
1528    First step for a NLFS adjoint
1529    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1530    o new init. routines for calc_r_star, calc_surf_dr
1531    o still need to deal with ini_masks_etc
1532    o testreport seemed happy
1533    checkpoint57y_pre
1534    
1535    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1536    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1537    o add new offset feature to offline pkg (plus minor cleanup)
1538    o cfc fixes for final year of integration
1539    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1540      be in GCHEM_OPTIONS).
1541    
1542    checkpoint57x_post
1543    o fix testreport Pb in multiple test experiment.
1544    o cleanup our namelist syntax in verification:
1545      - make it more F95 standards compliant (some work still needed)
1546      - allows the vast majority of our tests to work with gfortran
1547    o Non-Hydrostatic:
1548     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1549     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1550    o Allow to apply AB on T,S rather than on AB(gT,gS):
1551     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1552     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1553       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1554     - need a "clever" read_pickup to restart from the other AB formulation
1555    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1556    o remove some unused variables (reduces number of compiler warnings)
1557    o adjoint
1558      * Disable useVariableViscosity for adjoint for time being
1559        (there are a number of extensive recomputations)
1560      * Initialize certain variables needed for adjoint
1561    
1562    checkpoint57w_post
1563    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1564                 fix the singleCpuIO RS version of MDSWRITEFIELD
1565       and add a WARNING if using globalFiles=T with multi-processors.
1566    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1567      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1568    o tracer advection scheme:
1569      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1570       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1571       was not very convenient).
1572      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1573       (further tests needed for the implicit DST & Flux-Limiter schemes).
1574    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1575      and sRef for convenience, handy, when you want to initialize
1576      ptracers in a large domain with a constant non-zero value. Also,
1577      untangle ptracers_init.F a little.
1578    
1579    checkpoint57v_post
1580    o change dome exp. to use variable viscosity in side-drag terms.
1581    o remove all the files from the cfc_offline test since they are now
1582      incorporated into tutorial_cfc_offline which has been producing
1583      identical results for a few days of testing
1584    o add new parameter: sideDragFactor to enable half-slip-side BC
1585      and change side-drag S/R to use viscosity from mom_calc_visc
1586      (can switch back by setting sideDragFactor=0.); affects results at
1587      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1588       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1589    o vorticity & strain are now computed without masking, to account for
1590      no-slip-side BC in variable viscosity calculation ; mask is applied
1591      anyway later on, before computing advection/coriolis terms.
1592    o modify exp4 to test new obcs support for reading from external files
1593      and for passive tracers
1594    o fix behavior of ptracers_monitor when monitor output is written to a
1595      netcdf-file; still not independent of monitor.F (writes in the same
1596      file).
1597    o change default value of tRef (put a uniform, meaningful value for ocean
1598      & atmos) and initialize sRef (was missing, as Martin mentioned).
1599    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1600      to be proportional to enstrophy dissipation length.  Thus,
1601       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1602      This is now consistent with Smagorinsky and with the manual.
1603    
1604    checkpoint57u_post
1605    o OBCS and PTRACERS: add open boundary support for passive tracers
1606      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1607        OB-values from file; this is not different from the way theta and salinity
1608        are treated
1609      - however, Orlanski-radiation conditions are not supported, and the model
1610        will stop if you use pTracers and Orlanski at the same time.
1611      - beefed up the rountine obcs_external_fields_load: now only those open
1612        boundary values are overwritten with values from files for which there
1613        are really files, otherwise the OB-fields remain untouched. This makes
1614        it possible to use different OBs at different ends of the domain (as
1615        with EXF)
1616    o reduce number of exch calls in shap_filt (s2).
1617    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1618      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1619    
1620    checkpoint57t_post
1621    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1622    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1623      same truncation, independent of the face number: affects affects several
1624      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1625    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1626      note that biharmonic viscosity + no-slip was not tested in any experiment.
1627    o fix bug in non-linear free-surf side-drag ; generate new output for
1628      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1629    o make mnc honor the writeBinaryPrec flag for most kinds of output
1630    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1631    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1632      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1633    o add brackets in multi-terms sum to get same truncation, independent of
1634      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1635      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1636    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1637      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1638      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1639      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1640      Suggested values of viscosity parameters found in mom_calc_visc.
1641      Many new viscosity diagnostics available.
1642    
1643    checkpoint57s_post
1644    o Add clearing-house for viscosity calculations, mom_calc_visc and
1645      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1646      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1647      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1648      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1649      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1650      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1651      ViscAhStrain and viscAhTension are now retired.
1652    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1653    o In response to JMC's bug report, genmake2 now ignores any soft-links
1654      that it finds in the *current* directory when searching for files.
1655      Soft-links found in any other source directories will still work as
1656      they did before.
1657    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1658      a C routine to unlimit the stack size
1659    o mnc-ify pkg/aim snapshot vars
1660    o mnc-ify pkg/land as requested by Daniel
1661    o various changes to mnc including:
1662      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1663      - output can now be grouped so that all files within a group
1664          change the ITER portion of their names in lock-step together
1665      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1666          and works with both EXCH1 and EXCH2 (but needs more testing)
1667      - writing works for all verification test cases w/ g77 on Linux
1668    
1669    checkpoint57r_post
1670    o make MNC variable initialization happen earlier
1671    o add diagnostics for (almost) each term of the momentum Eq.
1672    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1673    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1674    o remove MINIMAL_TAVE_OUTPUT option ;
1675      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1676    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1677      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1678    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1679    o add time-dependent SST, SSS control
1680    o cost terms in ecco/ modularized (new cost_generic.F)
1681    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1682    o new infrastructure for seaice model vs. obs misfits in seaice/
1683      * driver from the_main_loop.F is seaice_cost_driver.F
1684      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1685      * gradient check in Exp. 6a of natl_box_adjoint/
1686    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1687      (see README file)
1688    
1689    checkpoint57q_post
1690    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1691    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1692      - bug was reported by Jean-Michel and Ian Fenty
1693    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1694      update exp. cpl_aim+ocn output.
1695    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1696      Needed for high-res. runs with large global files
1697      to be able to limit tapelev size
1698    o Changed some tests for adjoint:
1699      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1700      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1701      * global_ocean.90x40x15/ back to default 3-level checkpointing
1702    o Modifications to enable scripted COMMON to MODULE conversion
1703      * verification/OpenAD/code/ has necessary scripts and description;
1704      * converts, compiles and runs successfully;
1705    
1706    checkpoint57p_post
1707    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1708    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1709      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1710    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1711    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1712      (was already the case for dissipation with mom_vecinv,
1713       and also the case for grad.PhiHyd when staggered-timeStep)
1714      This will allow to put dissipation out-off the AB time-stepping.
1715     Unfortunately, affects truncation error. Update output of exp. that "fails"
1716      (cg2d matching number) and leave the others for later: front_relax(10),
1717      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1718      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1719    
1720    checkpoint57o_post
1721    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1722      (2) its ready to be documented during the 20050801 DocFest
1723    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1724      for ideal_2D_oce and lab_sea on linux_ia32_g77
1725    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1726      in global1x1_tot/code_seaice_adj to access indices 32, 33
1727      (worth another tag)
1728    
1729    checkpoint57n_post
1730    o adding precip control xx_precip 32
1731    o adding swflux control xx_swflux 33
1732    o Replacing 10 forcing penalty cost routines by 1 generic.
1733    o Implementing partitioning in time-mean and variable adjustment
1734      for atmos. state.
1735    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1736  o in natl_box_adjoint:  o in natl_box_adjoint:
1737    * updated: results_bulk/    * updated exp 1 to 10
1738    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1739    o updated global1x1/*_seaice_adj/
1740      to incorporate latest changes
1741    o enable useSingleCpuIO for mdsio vector routines
1742      (applies in particular to tapelev I/O)
1743    o removed inefficient K-loop in all active_file*control*.F
1744    
1745  checkpoint57m_post  checkpoint57m_post
1746  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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