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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.1057 by dfer, Fri Jan 30 14:31:18 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/ggl90: a few modifications:
8  o moved ptracer ctrl index 17 -> 32   - fix bottom boundary condition, and interpolation of KappaE
9       near top and bottom
10     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
11     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
12     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
13    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
14      (maintain temporary backward compatibility, until next checkpoint)
15    
16    checkpoint61h
17    o pkg/diagnostics with "periodic averaging diagnostics":
18      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
19    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
20    o pkg/obcs: fix loop ranges for balancing code
21    o pkg/flt:
22     - improve criteria for finding which tile owns a float.
23     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
24    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
25      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
26      with ocean biogeo)
27    o pkg/flt:
28     - do some cleaning and fix the restart ;
29     - add output.txt in flt_example/results to get this pkg tested.
30    o genmake2: add an EXTENDED_SRC option and flag.
31       for now, cannot be turned on on command line (only through genmake_local)
32    o pkg/mdsio: read/write vector:
33     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
34     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
35       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
36     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
37      (drop to 4 digits matching for grad). But this test does not look very
38      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
39    
40    checkpoint61g
41    o pkg/flt:
42      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
43       + make OPTIONS file more standard.
44      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
45      - fix _BYTESWAPIO CPP-Flag
46      - standard reading of file-parameter "data.flt"
47      - fix argument list of S/R FLT_RESTART
48      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
49    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
50    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
51      a still unfixed compiler/optimization bug
52    
53    checkpoint61f
54    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
55      update results of global_ocean.cs32x15.icedyn test.
56    o move getcon.F from model/src to pkg/fizhi.
57    o pkg/exf: add parameter for extrapolation of temp up to the surface
58       and option to prevent negative evap (in bulk_largeyeager04 only).
59    o Prather Advection scheme: fix tracer conservation for divergent flow
60      (e.g., when using NonLin Free-Surface).
61    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
62    o gmredi (Visbeck-variable-K):
63     - add more parameters to Visbeck-variable-K.
64     - use a 5 points average for dSigmaR in Visbeck-K calculation
65       (more "homogenous": same stencil and same weights as in dSigmaH)
66     - update output of ideal_2D_oce experiment.
67    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
68      (#undef REAL4_IS_SLOW)
69     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
70       coordinate variable
71     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
72       (surface forcing fields), removes some of the functionality
73     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
74     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
75       probably not all: copy _RS surface flux fields to RL field before
76       calling DIAGNOSTICS_FILL
77     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
78       real*4 (CALL EXCH_*_RS) versions.
79     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
80       (generate new output).
81    
82    checkpoint61e
83    o gmredi (Visbeck-variable-K):
84      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
85      - change computation of Visbeck-K where Slope > Smax :        
86        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
87        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
88    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
89      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
90    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
91    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
92      does not become too large (to avoid precision problems in implicit-diffusion
93      solver); update ideal_2D_oce output.
94    o pkg ggl90:
95      - in ggl90_cal.F: compute only one set of visc/diff, used to
96        step forward TKE/T/S/momentum
97      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
98        have Prandlt =1)
99    o gmredi (fm07):
100      - add lower limit on Transition layer thickness + lower limit on 1/lambda
101      - allow to set few more params from data.gmredi
102    o pkg ggl90:
103          - add missing sqrt(2) factor in computation of mixing length
104            scale in ggl90_calc.F
105            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
106    
107    checkpoint61d
108    o adjoint modifs
109      - adapt to new field rhoInSitu
110      - allow to revert from StoreDynVars2D, StoreDynVars3D
111        to individual fields
112        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
113    o store 3-D (in-situ) density in commom block (DYNVARS.h)
114     - save 1 rho computation.
115     - no longer modify T & S inland when using down_slope pkg.
116    o gad_som : allow to switch to SOM advection for T & S without corresponding
117      pickup files (using new S/R: MDS_CHECK4FILE).
118    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
119      (for useSingleCpuIO to work in multi-threaded)
120    o pkg/shelfice:
121     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
122       with SHELFICEtopoFile in data.shelfice
123     - move code for reading ice shelf topography and modifying hFacC into separate
124       subroutines of the shelfice package
125     - separate initialisation of "fixed" and "variable" variables
126     - kTopC is not (yet) replaced by kSurfC, although this is possible
127    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
128    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
129      and rename:
130      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
131      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
132    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
133    
134    checkpoint61c
135    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
136      to add mass source/sink of fluid in the interior (3-D generalisation
137      of oceanic real-fresh water flux).
138    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
139    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
140    o new pkg: down_slope
141      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
142      - presently, modify T & S inland (dwnslp_calc_rho.F).
143        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
144      - implementation for ocean in P-coords not tested.
145      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
146    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
147      (to facilitate conversion of oceanic pkg to p-coordinate).
148    o change FIND_RHO to FIND_RHO_2D :
149      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
150    o new pkg: cheapaml
151    
152    checkpoint61b
153    o exch2:
154      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
155      - no longer depend on the order sequence (N,S,E,W).
156      - 3rd exchange no longer needed (tested with 24 tiles).
157      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
158      - exch_UV_A-grid readily available (but not yet tested).
159      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
160      (both are no longer needed) in exch_uv: no effect in forward run; but
161       get truncation error differences with adjoint exch.
162    o exch2:
163     - change index-bounds storage (moved from target to local tile,
164       more intuitive this way) ; rename/remove some variables.
165     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
166    
167    checkpoint61a
168    o exch2/matlab-topology-generator:
169      fix bug in index bounds for N-S internal exchange (hard to tell if this
170      had any effect on the solution).
171    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
172      is exceeded
173    o testreport: modify syntax of awk, so that it works also with
174      awk, and not only with nawk and gawk
175    
176    checkpoint61
177    o autodiff
178      Change default for TAF usage by removing argument '-nonew_arg'
179      This changes TAF subroutine argument list (ordering of active var.)
180      Omission of this flag leads to incompatibility w.r.t. TAMC
181      To restore TAMC-compatibility, need following modifs:
182      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
183      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
184      Tested TAF version is 1.9.22
185      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
186    
187    checkpoint60
188    --->>> This is the last checkpoint for which generating the adjoint
189    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
190    --->>> by default.
191    --->>> Future checkpoints will ommit this flag by default.
192    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
193    o pkg/grdchk: Add gradient check to etan0 perturbations.
194    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
195    o pkg/autodiff: more flexibility in zeroadj.
196      model/src: modifying do_oceanic_phys.F accordingly.
197    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
198    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
199      special setup of gmredi for which the adjoint is stable
200      enough for parameter optimization.
201    o bridging the gap between eddy stress and GM.
202      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
203          along with a change in CPP option (now ALLOW_EDDYPSI).
204      -> when using GM w/ GM_AdvForm:
205          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
206          is applied either in the tracer Eq. or in momentum Eq.
207          depending on data.gmredi (intro. GM_InMomAsStress).
208      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
209      The key modifications are in model/src/taueddy_external_forcing.F
210      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
211    
212    checkpoint59r
213    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
214      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
215      fix option to read coriolis(@ cell-corner) from files with CS-grid.
216    o pkg/mnc: add some attributes to standard 1D-coordinate variables
217    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
218      mass points, when using mnc for output
219      - add runtime parameter (missing_value, missing_value_int) to override
220        default (which is the value of getcon('UNDEF'))
221    o pkg/mnc: prepare mnc for the actual use of missing values with the
222      diagnostics package: small fix in mnc_cw_readwrite.template and more
223      initialisation of never used fields
224      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
225      versions
226    o pkg/thsice/thsice_ini_vars.F added default initial values so that
227      thermodynamics sea ice solver does not blow up when some initial fields
228      are missing.
229    o move from external_forcing_surf.F to ini_forcing.F
230      the p-coord. hack consisting in using pLoad to set phi0surf ;
231      update output of tutorial_global_oce_in_p (affected @ truncation level).
232    o Freshen up a bit hs94.1x64x5, notably:
233      remove rotationPeriod and tRef=5*0. (adjoint only), and add
234      exactConserv=.TRUE.
235    o pkg/generic_advdiff:
236      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
237      applies to files where Temperature & Salinity 2nd Order moments are used.
238    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
239      this uses a dynamically allocated internal state data structure
240      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
241      and requires a fortran 90 compiler
242    
243    checkpoint59q
244    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
245       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
246    o Refresh tutorial_global_oce_biogeo, notably:
247      - change bathymetry (put back seamounts in ACC, use hFacs)
248      - change EOS (POLY3 --> JMD95Z)
249      - use Bryan-Lewis vertical diffusivity
250      - use multidimensional advection
251      - remove old virtual virtual in dic pkg, now done through ptracer pkg
252      - change a couple of parameters in dic pkg
253    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
254    o pkg/obcs: change default to OBCSfixTopo = .true.,
255      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
256      - replace "debugMode" with "debugLevel .GE. debLevB"
257    o implementation of TAF directives for gchem,cfc,dic
258    o remove "exp5" (replaced by tutorial_deep_convection).
259    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
260      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
261      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
262      --> changes results in exp4, seaice_obcs
263    o tutorial_deep_convection :
264      update the set-up and increase resolution and domain size ; start
265      from pseudo initial conditions = output at t=120mn in order to see
266      something happening when running testreport.
267    o pkg/seaice: add os7mp as an advection scheme
268                  add check for advection schemes
269                  add a flag for restoring T and S underneath sea ice
270    o pkg/my82: add netcdf-support and diagnostics
271    o thsice pkg:
272      - Now hsMax limits snow height by turning it into ice following
273        flooding scheme (and now conserving energy)
274      - Slight rewriting of the formula in thsice_calc_thick.F
275      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
276      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
277    
278    checkpoint59p
279    o gchem / dic / cfc :
280      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
281      - add new parameter files: "data.dic" & "data.cfc" ;
282      - various re-arrangement in initialisation & header file ;
283      - fix tutorial_global_oce_biogeo for multi-threaded test.
284    o pkg/dic: test for "pickup_dic" file when restarting ;
285      if no pickup-file, can restart with a re-initialised pH (same as it did
286      before) providing pickupStrictlyMatch is set to False.
287    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
288      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
289    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
290      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
291    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
292     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
293       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
294    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
295       scheme to use for vorticty-term ;
296     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
297       (with default selectVortScheme, return to original discretisation)
298     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
299    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
300    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
301      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
302      also fix diagnostics VISCAHW & VISCA4W.
303    
304    checkpoint59o
305    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
306    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
307      move a few statemens out the main loop into separate loops
308    o pkg/shelfice:
309      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
310        (kg/m^2/s), does not break tests, because in verification/isomip,
311        rhoConstFresh=rhoConst (by accident)
312      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
313      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
314        new file model/src/seawater.F, so that they are available for all pkgs.
315      - convert potential temperature into in-situ temperature. This changes the
316        isomip tests => update tests
317    o add a flag writePickupAtEnd (default=true) to be able to suppress
318      writing a pickup at the last timestep
319    o tools/mpack-1.6 :
320      - disable automake (not working) and autoconf (not needed).
321      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
322        also cleaner with much less compilation warnings.
323    o pkg/profiles:
324      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
325      (for "less than 32 characters name" compiler requirement)
326    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
327      conditions that have a different sampling frequency than S/T/U/V obcs
328    o pkg/diagnostics (stats-diags):
329      - fix global Min/Max in case 1 processor get only empty tiles
330    o genmake2: replace (4 times)
331         make genmake_tc_1.o >> genmake_warnings 2>&1
332      with
333         COMM="$CC $CFLAGS -c genmake_tc_1.c"
334         echo $COMM >> genmake_warnings
335         $COMM >> genmake_warnings 2>&1
336      to make genmake2 always see the value of CC as specified in the optfile.
337    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
338      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
339      - modify verification advect_cs test to test SOM-advection on CS-grid.
340    o pkg/ctrl:
341      - Rewrite of ctrl_map_ini_ecco.F,
342        introducing a generic routine (ctrl_map_ini_gen.F).
343      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
344    
345    checkpoint59n
346    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
347      number in dedicate array "hdiag":
348      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
349        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
350      - many small changes (integer format) for large number of diagnostics
351      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
352        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
353    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
354      usingSphericalGrid, this allows to define the rotated grid coordinates
355      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
356      geographical coordinates according to the inverse of the rotation defined
357      by the Euler angles, so that Coriolis parameter and online-interpolation by
358      exf works with the geographical coordinates on XC/YC/XG/YG.
359      Naturally, this feature does not work with all packages, so some
360      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
361      profiles), because there the coordinates are assumed to be regular
362      spherical grid coordinates.
363    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
364      - introduce isopycnal diffusion coefficient control.
365    o tools/adjoint_options:
366      - additional control vector components.
367    o pkg/mnc: have mnc create marginally meaning full coordinate variables
368      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
369    o pkg/mypackage:
370      - add example of read/write pickup for state-var ;
371      - add entry points to the main code for state-vars diags & write-pickup.
372    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
373      transitions for useExfYearlyFields
374      - add new subroutine that determines the file to read from for
375        use*YearlyFields = .TRUE. and .FALSE.
376      - add a verification experiment to global_with_exf that tests
377        useExfYearlyFields with USE_EXF_INTERPOLATION defined
378    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
379      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
380      subroutines (which could be generated from a template, because they are
381      almost identical), for now they are included in obcs_prescribe_read.F for
382      simplicity
383    o pkg/exf:
384      - add a little more diagnostic to exf_interp_read (in analogy to
385        mds_read_field, can be turned off with debugLevel < debugLevA=1)
386      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
387        ugly but fast by unrolling short inner loops, inserting a unroll=8
388        directive in routine lagran, and splitting a loop and making do while the
389        outermost loop (the latter requires the intoduction of index arrays)
390    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
391    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
392      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
393    o verification/seaice_obcs: updated for restart test and latest options
394    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
395      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
396      for now this is only available for the C-grid code and also within
397      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
398    
399    checkpoint59m
400    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
401      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
402    o gad_som : fix flux output (& diagnostics) to have same units as other  
403      advection scheme fluxes (was previously multiplied by deltaT).  
404    o added verification/seaice_obcs both to test seaice open boundaries
405      and to provide an example matlab scrpt for generating them
406    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
407    o pkg/salt_plume: clean up salt_plume_frac.F to
408      remove redundancy in PlumeMethod 1 and 4
409    o pkg/kpp: added saltplume diagnostics
410    o pkg/obcs and pkg/seaice:
411      - do not set uice and vice to zero when OB*icefile are unspecified
412      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
413      - moved seaice tracer obcs after call to seaice_growth
414    o pkg/salt_plume: added various options for salt plume depth
415      criterion and for vertical distribution of the salt
416    
417    checkpoint59l
418    o pkg/ptracers: new version of ptracers pickup:
419      read meta file and write only fields which are needed to restart.
420      ( same logic as main pickup file ; also using pickupStrictlyMatch )
421    o pkg/seaice:
422      - add timescale for melting due to warm mixed layer as a means of
423        setting SEAICE_availHeatFrac more conveniently
424      - add a CPP-flag/runtime parameter check for flooding algorithm
425      - reformulated availHeat in seaice_growth.F to be independent of AREA
426    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
427      unit changes
428    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
429    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
430      SX vector computer.
431    o pkg/seaice:
432      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
433        seaice forcing fields can now be read only through pkg/exf
434      - removed some unused halos
435    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
436    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
437      or U/VICE from U/VWIND before computing U/VSTRESS
438    
439    checkpoint59k
440    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
441      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
442    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
443      all experiments pass when compile with un-initialised var. checking option.
444    o added pkg/salt_plume
445    o script to test restart (for now, in MITgcm_contrib/jmc_script)
446    o pkg/seaice: new read/write pickup version.
447      read meta file and write only fields which are needed to restart.
448      ( same logic as main pickup file ; also using pickupStrictlyMatch )
449    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
450    o lab_sea.hb87: modify the domain & update output.hb87.txt :
451      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
452      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
453      process. Fixed here by closing the domain at the Northern boundary.
454    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
455    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
456      a set of consecutive levels in/from a 3-D array.
457    o pkg/ptracers:
458      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
459      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
460    
461    checkpoint59j
462    o in pkgs: dic, obcs, offline, rbcs:
463      standard way to compute coeff. for time interpolation between 2 time reccords
464      which retains full precision (& make results less dependent on compiler).
465      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
466    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
467      packages instead of reading ice cover and wind speed separately
468    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
469     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
470      to allow to compile customized code before the update)
471    o cleaning-up:
472      - fix CPP instruction syntax in pkg/obcs
473      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
474        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
475      - fix some threads issue in IO parts.
476    o pkg/dic:
477      - add tons of "_d 0" (--> much better testreports !)
478       and then update outputs of tutorial_global_oce_biogeo
479    o pkg/mom_fluxform:
480      add a special version of momentum advection intended to conserve momentum
481      next to a bathymetry step or a coastline edge. (default = off = #undef)
482    o new read/write pickup version:
483      - for now, only implemented for main (mdsio) pickup file.
484      - write out only what is needed to restart; merge pickup_nh , pickup_ph
485        and main pickup together.
486      - read meta file; read only what is needed to restart; stop if a field
487        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
488        if it make sense (even if the restart is not perfect).
489      - if no meta file, assume that pickup to read corresponds exactly to
490        a pickup that would currently be written.
491      - read pickup written in the old format (until checkpoint59i) if it
492        recognizes an old meta file (no field-list).
493      - add a meta file in exp. which starts from a pickup: 2 cases:
494        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
495         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
496        b) a meta file describing the content of the associated pickup file
497         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
498    o pkg/mdsio & pkg/rw:
499      - new routine to read a meta file ; new set of routine to read
500        Multiple-fields file (with meta file).
501    o added open boundary conditions capability for seaice
502        HSNOW, HSALT, UICE, and VICE
503    
504    checkpoint59i
505    o adjoint:
506      * fix multiDimAdvection adjoint
507        (partial recomputation problem by TAF for fVerT(:,:,kDown)
508        and comlev1 size definition (maxpass vs. max. number of tracers)
509      * verification/global_ocean.90x45x15 adjoint now tests
510        NLFS and multiDimAdvection using DST3 (=30)
511      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
512    o pkg/kpp: add "_d 0" to real constant (if missing);
513      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
514      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
515    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
516      for internal parameters related to restart process (formerly from PARAMS.h)
517      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
518    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
519      as argument. (only atm2d & obcs write_pickup have not yet been updated)
520    o pkg/monitor:
521      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
522      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
523      - account for deep Atmosphere factor and density factor (anelastic)
524    o added open boundary conditions capability for seaice HEFF and AREA
525    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
526      thermodynamics
527      - requires a little reorganization, which affects the testreport results
528        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
529        so that now the conservative form is tested
530      - add a few comments
531    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
532    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
533    o add new diagnostics to seaice: advective, diffusive fluxes (only for
534      multidim-advection, for scheme 2 they are not filled) and transports,
535      thermodynamic growth rates
536    o change units of EmPmR (inside the code, + within coupling interface)
537      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
538      Affects results @ truncation level (cg2d match) and update output of
539       experiments: lab_sea(6), global_ocean.90x40x15(10),
540      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
541      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
542      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
543      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
544    
545    checkpoint59h
546    o pkg/exf:
547      - improve vectorization by moving if-statement out of loops in
548        exf_mapfields, exf_radiation
549      - exf_bulkformulae.F: introduce 2D fields and vectorize code
550    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
551    o testreport:
552      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
553        monitor & update offline_exf_seaice exp. output.
554      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
555    o pkg/seaice:
556      - bug fix in the evp solver: boundary conditions were affected be
557        masking of zMax/zMin (changes results)
558      - minor bug fix in boundary conditions in seaice_calc_strainrates
559        (changes results for no_slip)
560      - seaice_lsr.F: make interpolation of eta dependent on boundaries
561      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
562      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
563        stress formulation and no-slip boundary conditions
564    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
565      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
566    o pkg/seaice: a first HSALT time stepping equation has been checked in
567    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
568      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
569      without requiring DO-IF statements
570    o pkg/thsice:
571      use continuous power-law function for partition of energy between lateral
572      melting/freezing and thinning/thickening ; old code using step function
573      still available with #undef THSICE_FRACEN_POWERLAW
574      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
575    o testreport: change AD testing : check against results/output_adm.txt
576      using same scripts as for forward test.
577    
578    checkpoint59g
579    o adjoint testing: in preparation for changing testreport:
580      - output format: cost and grad written on separated lines
581      - ad output results in directory "results" (instead of "results_ad")
582    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
583    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
584    o pkg/ecco: allow user defined cost function contributions
585    o testreport:
586      Allow to choose (per experiment) the list of tested output variables
587       and the main variable (used to issue a pass/FAIL ) ;
588      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
589      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
590      Also modify printing of summary:
591       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
592       b) echo the list of tested variables in the individual summary.txt of
593          each experiment.
594    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
595      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
596      (but still depend on the tile decompostion of the domain).
597    o pkg/seaice: change a discretization detail to make the B-grid code
598      "more symmetric". This change is likely to remove all "ridges/leads" that
599      where quasi-aligned with the grid in B-grid solutions. It may also be
600      the solution to the stress coupling issues with the B-grid.
601    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
602      remove .cvsignore from input dir. (since testreport no longer run here).
603    o pkg/thsice:
604     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
605     - fix reshaping of sea-ice just after advection:
606       melt all the ice only if ice-volume is too small.
607     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
608       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
609     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
610    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
611      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
612    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
613      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
614      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
615      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
616      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
617      -> update output.txt
618    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
619     this affects truncation error: -> update output.txt of exp:
620      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
621      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
622    
623    checkpoint59f
624    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
625    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
626      a bounded range (in forward mode)
627    o pkg/ecco, ctrl, autodiff and mom_common:
628     internal parameter controls, completements of implementations
629    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
630    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
631      (not seem any difference in testing results).
632    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
633       at face corners.
634    o pkg/generic_advdiff:
635     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
636      loop range indices for computing vertical advection tendency
637      and do the calculation in the interior only (no overlap) ;
638      for now, only implemented for SOM advection (to save CPU time).
639     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
640    o exch2 adjoint
641      First set of changes:
642      - add exch2 hand-written adjoint templates
643      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
644        This will require cleanup in pkg/autodiff/*.F
645        (changed routines currently kept separate in verif. code/)
646      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
647        that used to hide exch2 or cubed-sphere specific code
648        (commented via 'cph-exch2')
649    o pkg/seaice
650      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
651    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
652       output of global_ocean.cs32x15.thsice .
653    
654    checkpoint59e
655    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
656      for B-grid vector (not yet tested) and C-grid vector (<- only used
657      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
658    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
659      (#ifdef ALLOW_SALT_PLUME)
660    o gather_2d/scatter_2d: removed halo regions
661    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
662      scheme and the corresponding test case (under front_relax dir). For now,
663      only available with Skew-flux form and not yet tested in realistic set-up.
664      adjoint: store directives updated, but gradient checks deteriorated,
665      so maybe GM/Redi adjoint is now broken.
666    o seaice adjoint
667      * add AREA, HEFF, HSNOW as control variable
668        (should not change lab_sea results)
669      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
670    o pkg/seaice:
671      * added computation of saltFlux in seaice_growth;
672        For time being, sea ice salinity is assumed constant
673        contribution of snow flooding to freshening of sea ice is neglected.
674        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
675        defaults to 0.0 in order to maintain backward compatibility.
676        Typical values for SEAICE_salinity are 4 to 10 g/kg.
677      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
678      * added SEAICE_availHeatFrac, which specifies fraction of surface level
679        heat content used to melt or grow ice
680      * commented out cap of HICE: it helps keep ice thinner
681      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
682      * applied OBCS T/S mask to HEFFM sea ice mask
683    
684    checkpoint59d
685    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
686     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
687     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
688    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
689     and change default value of parameter "GM_Small_Number";
690     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
691       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
692       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
693    o pkg/ecco: cost function when applying pkg/smooth to controls
694    o pkg/ctrl: add forcingPrecond run time parameter
695    o pkg/seaice:
696     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
697     - fix bug in metric terms of u-equation in LSR solver (implicit part),
698       changes verification/lab_sea
699     - rearrange implicit part of u-equation in LSR solver to make it easier to
700       read, understand, and debug. This causes changes at the truncation level.
701     - fix (serious) bug in the boundary conditions (sign error in the implicit
702       part) of the LSR solver. Changes all LSR results.
703     - fixed problem with HSNOW initialization to avoid thick snow when AREA
704       is initilized with small values - does not change lab_sea results.
705     - added HsnowFile initialization capability
706    o pkg/smooth: addition to model/src and pkg/ctrl so allow
707     initialization of pkg/smooth and application to control vector
708    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
709    o dependencies: pkg/profiles requires pkg/cal
710    o pkg/profiles:
711     - added option ALLOW_PROFILES_GENERICGRID
712         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
713         that interpolation information (grid points and coefficients) is provided
714         within the netcdf input files.
715         -> sample matlab scripts can be found in MITgcm_contrib/gael
716         that allow you to prepare netcdf input files.
717     - also modified: cleaner include statements, cleaner error print statements,
718       cleaner stops when error, and more tests of the netcdf input files consistency.
719    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
720    o pkg/seaice:
721     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
722       requires a new routine: seaice_diagnostics_fill.F
723     - make sure that seaice does not move if not forced (pressure replacement
724       method, Hibler and Ip, 1995), changes results
725     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
726     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
727       It is turned off by default (=-1.), because it changes the results.
728     - make it possible to read AREA from a file, too.
729    
730    checkpoint59c
731    o add S/R and diagnostics for oceanic mixed-layer depth
732    o move GMRedi call after all vertical mixing schemes (including KPP)
733    o pkg/thsice:
734     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
735      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
736    o pkg/obcs:
737     - bug fix for balance code
738    o pkg/seaice:
739      - allow values of SEAICE_elasticParm > 1
740      - add new parameter SEAICE_evpTauRelax as an alternative
741        to SEAICE_elasticParm
742      - make lsr boundary conditions free slip (by default), changes result
743      - add code for no slip boundary conditions for lsr
744      - set minimum of zeta to zero (and not 4e8) (changes results)
745      - add a cap on AREA after advecting AREA if seaice_growth is not called
746    o change calculation of Visbeck K:
747      - no longer depend on tapering scheme; instead, compute slope (limited
748        by GM_maxSlope). this is equivalent to what was comuted before with
749        clipping or linear tappering.
750      - fix vertical averaging (wrong by 1/2 level)
751      - leave the old version (but will not be maintained) within
752        #ifdef OLD_VISBECK_CALC / #endif
753      - update output of exp. ideal_2D_oce
754    o change error catch in calc_r_star to improve vectorization
755    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
756      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
757    o adjoint:
758      Re-organized adjoint checkpointing according to Matt Mazloff
759      (but with modifs/completions/cleanups)
760      Storing is now bundled into large arrays to optimized I/O
761      (and second step in cleanup of the_main_loop)
762    
763    checkpoint59b
764    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
765      - export/import (between ocean & coupler) fields needed for ocean DIC.
766    o pkg/seaice:
767      - get rid of three more exchanges seaice_calc_viscosities (required
768        different loop boundaries in seaice_lsr and seaice_ocean_stress)
769      - bug fix in seaice_ocean_stress (update of lab_sea required)
770      - reduce loop boundaries to necessary minimum also in seaice_evp
771      - go back to the old way of computing deltaC/Z as the adjoint likes that
772        better
773    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
774      passive tracer to an Age Tracer) + update output.txt
775    o pkg/exf:
776      - implement A-grid / C-grid selection for wind-stress input files.
777      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
778      for now, in exf_bulk_largeyeager04.F only :
779      - change implementation for case where windspeed + 2. components wind-stress
780        are read-in. AND use rhoConstFresh to convert evap.
781    o pkg/seaice:
782      - use correct EXCH_UV for wind-forcing (on A-grid).
783      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
784        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
785    o pkg/exf:
786      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
787      EXF_INTERPOLATION:
788      - merge global_with_exf/code version of exf_interp_read.F
789        to the main code ;
790      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
791        reading the file ; Important: This options needs to be defined to recover
792        previous code.
793        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
794      - no longer loose real*8 precision along the way when using exf_iprec=64.
795    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
796      - change discretisation of evp-solver in order to avoid another exchange
797        (changes lab_sea) and clean up a little
798      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
799        help the adjoint (this also changes the results slightly)
800      - add a few "_d 0" where they had been missing in seaice_evp.F
801      - cleaning up: remove unused seaice_calc_rhs.F
802    o pkg/exf: some cleaning-up:
803      - change various "constants" into runtime parameters
804      - cleaned-up Large&Yeager04 routine which should eventually
805        replace exf_bulkformulae.F (changed names of S/R and CPP)
806        and merged various ALLOW_ATM_WIND options
807     only used with thsice pkg (in thsice_get_exf.F):
808      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
809        which are used when useStabilityFct_overIce=TRUE (= the default)
810      - change default values of ice & snow emissivity and scale downward LW
811        by ice & snow emissivity.
812    o pkg/thsice:
813     fix few little problems, in thsice_calc_thickn.F:
814      - growth vertically (and not laterally) if iceFrac == iceMaskMax
815      - melt only laterally if hIce < hThinIce (as the comments say)
816      and in thsice_extend.F:
817      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
818      - start to form ice as soon as the minimum ice-volume is reachable.
819     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
820      and cpl_aim+ocn
821    o pkg/kpp
822     - move computation of surface related input fields to KPP into a new
823       subroutine kpp_forcing_surf.F
824     - remove wrong (within bi,bj loops) EXCH calls.
825     - little cleaning (add argument myThid in last position, cvs header ...)
826     - for now, fix conservation problem by exchanging KPPviscAz (may not
827       be the best fix)
828    o pkg/seaice
829     - check for inconsistent evp parameter/cpp-flag combination
830     - remove leftover errIO flat for obsolete name list error handling
831    o OpenAD
832     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
833    
834    checkpoint59a
835    o pkg/seaice: some parameter clarifications and a little bit of clean up
836    o pkg/thsice: rename run-time parameters:
837       himin       -> hIceMin
838       himin0      -> hThinIce
839       hihig       -> hThickIce
840       i0          -> i0swFrac
841       transCoef   -> bMeltCoef
842       frac_energy -> fracMelting
843      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
844       with default values (for now) that do not change the results.
845      remove old version of thsice vars advection in pkg/seaice.
846    o in FFIELDS.h:
847      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
848      - make pLoad & sIceLoad always available (but still only used if
849         ATMOSPHERIC_LOADING is #define).
850    o pkg/kpp: replaced _KPP_RL with _RL
851    o bug fixes for vertical diffusivity computations when both KPP and
852        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
853        are no longer updating the vertical diffusivity array
854        (passed as argument) but are (re-) setting those arrays.
855    o pkg/seaice: fix bug in evp solver, while doing that
856      - change (improve?) discretization of stress computations for both
857        cgrid-lsr and evp solver
858      - add a new routine to compute strain rates
859      - the above changes lab_sea results
860      - add no slip conditions for evp solver (off by default), lsr-version
861        may follow
862      - fix exchange for shear at Z-points (does not change lab_sea)
863      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
864        (to force the user to pick a time step since there is not "safe" way
865        of choosing it)
866      - add principal stress diagnostics
867      - rearrange fields for evp a little to avoid having to call a: too many
868        exchanges and b: exchanges for stress trensor components which we do
869        not have.
870      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
871        of evp, complete rewrite for lsr case (latter is does not yet work
872        in all cases)
873    o pkg/kpp: add code to have mixing in shelf ice caverns
874      - add myThid to all kpp routines (long overdue)
875    
876    checkpoint59
877    o pkg/exf:
878      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
879        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
880      - move exf header files from lower_case.h to UPPER_CASE.h ;
881        add missing cvs Header & Name
882      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
883      - add namelist param. selectStressGridPosition, exf_monFreq
884      - retire many _CLIM routines, and remove data.exf_clim
885        + params moved to data.exf
886        + climsst, climsss now handled by exf_set_gen, i.e.
887          climss?period=0 refers to constant field,
888          climss?period=-12 to monthly forcing
889      - split up namelists in data.exf
890    o pkg/seaice:
891      - remove seaice_exch and seaice_exch_uv
892      - remove superfluous exchange of theta
893      - add myThid to seaice_budget_ocean/ice
894      - add new interface for atmospheric wind forcing (C-grid only)
895        + new routine
896        + two new field (taux, tauy for stress over ice)
897        + removed one global field (DAIRN) for C-grid case only
898    o pkg/thsise
899      - 2nd set of modifs for thsice adjoint in conjunction with exf
900    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
901    
902    checkpoint58y_post
903    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
904      vertical diffusivity, similar to that in MOM4; turned on using
905      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
906      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
907    o Added capability for 3D specification of background vertical diffusion
908      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
909      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
910      "data" file that contains the 3D vertical diffusivity coefficients.
911    o ice dynamics (pkg/seaice) with thsice thermodynamics:
912      - add code within pkg thsice to advect & diffuse sea-ice fields
913      similar to (and will replace) what has been added in  seaice_advdiff.F,
914      but: - conserving Mass, Heat & Salt.
915           - better when using non-linear advection scheme (not yet fully tested)
916           - can also be used in atmospheric set-up (for now, only the diffusion).
917    
918    checkpoint58x_post
919    o IO option for global-file compact format:
920      - add options when generating topology (utils/exch2/matlab-topology-generator)
921      - add I/O capability (pkg/mdsio).
922      - adapt utils/matlab/rdmds.m to read this format.
923      for now long-line format not yet supported by pkg/mdsio (& exch2).
924    o shelfice: add a few diagnostics
925    
926    checkpoint58w_post
927    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
928      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
929      (and replace horiVertRatio in NH code).
930      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
931                         and tutorial_plume_on_slope (sensitive to truncation)
932    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
933      directly to drive seaice model (C-grid only)
934    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
935     - reintroduce computation of wind from stress,
936     - compute tau (in exf_bulkformulae.F) from windstress averaged to
937       mass points to avoid tau = 0
938     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
939    o rdmnc.m: make it work with "global" files created with gluemnc
940    o rdmnc.m : some improvements in dealing with singleton dimension
941      (tested on all testreport mnc output files).
942    o genmake2: disable pkg/profiles if netcdf test fails.
943    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
944    o move call to cal_readparms up to make calendar parameters/variable available
945      to all packages
946    
947    checkpoint58v_post
948    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
949      useDynP_inEos_Zc tested.
950    o pkg/exf: changes to properly interpolate/mask/scale initial fields
951    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
952      and portions thereof.  See read_cs.txt for description and examples.
953    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
954      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
955      following the great-circle arc between those 2 points.
956    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
957      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
958    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
959     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
960     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
961     - still needs work (not working with some options ; efficiency to improve)
962       and serious testing.
963     - use this scheme for temperature & salinity in 2 advection test exp.:
964       advect_xy & advect_xz, respectively.
965    
966    checkpoint58u_post
967    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
968    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
969    o testreport: add option "-skipdir" to skip some test.
970    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
971      momentum calculation.
972    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
973    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
974      remove checkpoint.F and the_correction_step.F (no longer used);
975      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
976    o add option (linFSConserveTr) to correct for tracer source/sink due to
977      Linear Free surface
978    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
979    o pkg/thsice: fix reading mnc-pickups
980    
981    checkpoint58t_post
982    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
983    o pkg/mdsio:
984     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
985       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
986       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
987     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
988     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
989       either MDS_READ_FIELD or MDS_WRITE_FIELD )
990     - new S/R (to replace MDSWRITEMETA), which allows to write more
991       informations (variable names, time ...) to meta files.
992     - modify rdmds.m to give back the meta file content.
993    o pkg/diagnostics: change vertical interpolation to be safer, and more
994       flexible (define p-levels to interpolate to in data.diagnostics);
995      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
996       diagnostic pointer.
997    o pkg/seaice: more cleaning up of seaice_growth, added many comments
998    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
999    o fix multi-category seaice:
1000     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1001       SEAICE_MULTICATEGORY
1002     - fix short wave heat flux
1003    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1004       and allow to use EVP solver. Change forward lab_sea: test both EVP
1005       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1006    o Initial check-in of lab_sea adjoint
1007      (very similar to natl_box_adjoint/code_seaice)
1008      * used C-grid and EVP solver
1009      * used KPP, GM/Redi
1010      * uses inAdExact=.TRUE.
1011      * gradient checks fail for both ADM and TLM
1012        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1013        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1014        issue is related to forward mismatch between g77 an ifort
1015    o pkg/seaice: overhaul of thermodynamics
1016     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1017     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1018     - move a few global fields out of SEAICE.h into seaice_growth.F and
1019       make them 2D (FICE/QNETO/ ...)
1020     - remove FO (it is the same as QNETO)
1021     - introduce a few local fields to avoid modifying external fields such
1022       as atemp, etc.
1023    
1024    checkpoint58s_post
1025    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1026      changed exf_set_gen.F so that
1027        genperiod=0 means input file is one time-constant field and
1028        genperiod=-12 means input file contains 12 monthly means
1029    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1030      this affects truncation error ; generate new output file for exp. which
1031      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1032        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1033        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1034        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1035        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1036        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1037    o start implementation of deep-atmosphere and anelastic formulation
1038    o verification: remove 2nd copy of input files and use script "prepare_run"
1039      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1040    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1041    o profiles: fix for multithreaded case
1042    
1043    o diagnostics: rename few diags:
1044      s/'PRESSURE'/'RCENTER '/g
1045      s/'TICE    '/'oceFreez'/g
1046      s/'TAUX    '/'oceTAUX '/g
1047      s/'TAUY    '/'oceTAUY '/g
1048      s/'SWFLUX  '/'oceQsw  '/g
1049      s/DIFx/DFxE/g
1050      s/DIFy/DFyE/g
1051      and add few ocean-forcing diagnostics:
1052      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1053    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1054      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1055      as actual snow thickness.  It now refers everywhere to effective snow
1056      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1057    
1058    checkpoint58r_post
1059    o modifications to pkg/seaice/growth.F, which change results of
1060      lab_sea experiment: fixes pertain to melting snow over open water, to
1061      masking EVAP under sea ice, and to using the correct AREA variable for
1062      computations of EVAP, PRECIP, HSNOW, and GHEFF
1063    o add ability to read bathy, salt, and theta using MNC (off by def)
1064    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1065      both are turned off by default and do no change any results
1066    o seaice advection with pkg/thsice: a step toward the use of non-linear
1067      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1068    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1069      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1070      in natl_box (affects results @ truncation level: update output.txt)
1071    o multi-threading and IO:
1072      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1073      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1074        (needed to work with SingleCpuIO): tested in all verif. exp.
1075    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1076      affects the results (but none of the verification test uses this scheme).
1077    o Adding some pkg/diagnostics capability to pkg/seaice
1078      (will certainly be subject to changes)
1079    o ctrl: adding new control variables:
1080      lwflux, lwdown, evap, snowprecip, apressure, runoff
1081    
1082    checkpoint58q_post
1083    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1084      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1085      high_res_cube configuration by 4% on Columbia.
1086    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1087      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1088      dynamical allocation (seems to work in multi-threaded).
1089    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1090      single CPU io) so that TAF does not have to see EESUPPORT.h
1091    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1092    
1093    checkpoint58p_post
1094    o obcs: stop if obcs is used with useCDscheme = .true.
1095    o shelfice:
1096     - fix a sign error so that no slip at shelfice interface works
1097     - remove stop for combination non-hydrostatic code and shelfice. That does
1098       not mean, that the results are correct, but at least they are numerically
1099       stable
1100    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1101    o added adjoint exch routined for all exch*3d* routines
1102      and updated flow directives
1103    
1104    checkpoint58o_post
1105    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1106      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1107    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1108      and clean-up reading/writing of pickup files.
1109    o fix local version of read/write pickup (NH part) in rotating_tank/code
1110    o simplify EXCH interface:
1111     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1112     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1113    o added the regrid package
1114    o shelfice:
1115     - add a simple boundary layer scheme to reduce noise
1116     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1117    
1118    checkpoint58n_post
1119    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1120       local variable (not in common block).
1121    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1122      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1123      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1124        to work with SingleCpuIO.
1125    o add "_d 0" to real constant of pkg/cfc subroutines ;
1126       update exp. cfc_exemple & tutorial_cfc_offline output files.
1127    o multi-threading and IO:
1128      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1129        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1130      - barrier before and after reading.
1131      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1132      - avoid using MDS_WRITELOCAL for LAND pkg output.
1133      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1134        common-block variables ; Allows multi-threading with master-thread IO.
1135    o change default MAX_NO_THREADS from 32 to 4 ;
1136      and stop cleanly when MAX_NO_THREADS is too small.
1137    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1138    
1139    checkpoint58m_post
1140    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1141       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1142    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1143       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1144       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1145    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1146        add MITgcm_tutorials (= code + all the tutorials)
1147    o ecco, option to compute cost for total ssh (mean+anom)
1148    o consistent with addition of ptracer and ssh in pkg/profiles
1149    o profiles: adding ptracer and ssh
1150    o testreport: change multi-test output-file name
1151      (from output.txt.{name} to output.{name}.txt)
1152    o profiles: now ok for mutli-tiles case
1153    o seaice: add 4 parameters for different advection schemes for area,
1154      (effective) seaice thickness, enthalphy, and snow height. Their default
1155      is the standard parameter SEAICEadvScheme
1156    o calc_gw:
1157     - add cosFacU in zonal viscous flux (harmonic.visc.).
1158     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1159       of tutorial_plume_on_slope.
1160    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1161    o calc_gw: true flux-form, account for horizontal grid spacing.
1162      update rotating_tank results, but not plume_on_slope (affected at
1163      truncation level, 11 digits).
1164    
1165    checkpoint58l_post
1166    o calc_gw:
1167     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1168     - remove side-drag for now (need to fix it); update plume_on_slope results.
1169     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1170    o commit code to make SST/SSS weights spatially variable
1171      (based on either variable in-situ or variable initial T/S weights)
1172    o pkg/ecco:
1173      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1174        now based on horizontally varying weights wthetaLev, wsaltLev
1175      * cost_averagesflags now returns year indices in addition to day, month
1176      * sflux balance is performed on annual basis
1177        (sflxumm, sfluxmm2, bal_sfluxmm)
1178      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1179        including separate counting and multipliers
1180    o pkg/rbcs
1181      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1182    
1183    checkpoint58k_post
1184    o testreport:
1185     - always build in dir. "build" (if not there, mkdir build instead of building
1186       & running in input)
1187     - run in dir run (if it exists), in build otherwise.
1188     - call prepare_run (if input/prepare_run exists)
1189     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1190    o pkg/exf modifications to interpolation and rotation routines for more
1191       reasonable treatment of North Pole singularity: for tracers North Pole
1192       value is set to northernmost zonal-mean value, for zonal velocity it is
1193       set to zero, and for meridional velocity it is set to northernmost value.
1194    o pkg/exf/exf_check_range.F
1195     - add tile index to diagnostics and move stop statement to the very
1196       end of the routine.
1197    o pkg/diagnostics: (diagnostics_main_init.F)
1198      define title of isomorphic variables according to the current config.
1199    o pkg/thsice with pkg/seaice dynamics:
1200    - fix domain of computation (interior only, required for exf) and do exchanges
1201    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1202    o towards a standard way of dealing with multi-threading in MONITOR
1203      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1204    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1205       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1206    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1207    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1208    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1209       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1210    o tracer advection:
1211     - clean-up and simplify calc_common_factors.F
1212     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1213       advection subroutine (but still not used within DST advection S/R)
1214    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1215    
1216    checkpoint58j_post
1217    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1218      from file (collects calls previously in FORWARD_STEP)
1219    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1220    o adjoint store dir. adjusted accordingly
1221    o genmake2
1222      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1223    
1224    checkpoint58i_post
1225    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1226      on wind stress (SEAICEstressFactor defaults to 1.)
1227    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1228      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1229    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1230      on CS-grid: no longer loosing mass.
1231    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1232    o pkg/ggl90: fix sloppy output and fix a bug
1233    o pkg/seaice: added SEAICEuseEVPpickup parameter
1234      - Set to false in order to start EVP solver with
1235        non-EVP pickup files when using SEAICEuseEVP
1236      - fix sign error in diffusion in seaice_calc_rhs
1237    
1238    checkpoint58h_post
1239    * Modifications for bottom topography control
1240      o replace hFacC by _hFacC at various places
1241      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1242      o add non-self-adjoint cg2d_nsa
1243      o update autodiff support routines
1244      o re-initialise hfac after ctrl_depth_ini
1245      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1246    * Adding verification for 5x5 box (4-layer) bottom topography control
1247    
1248    checkpoint58g_post
1249    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1250       used for mean seasonal cycle, mean diurnal cycle); add an example
1251       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1252    o pkg/ggl90:
1253      - add parameter (minimum surface kinetic energy)
1254      - fix bug (avoiding division by zero)
1255    o couple pkg/thsice to pkg/seaice:
1256      - modify advection in seaice to accomodate new scalar fields to be advected
1257      - only muliDimAdection scheme work with seaice/thsice
1258      - mapping of thsice-variables to seaice-variables, back and forth
1259      - does not break the verification experiments, but does not give the
1260        desired results either
1261    o pkg/seaice
1262      - make (default) second order advection a bit less confusing?
1263    
1264    checkpoint58f_post
1265    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1266      to pkg/seaice):
1267      - new routines thsice_map_exf and thsice_get_exf provide the interface
1268      - add an additional formal parameter to thsice_solve4temp
1269    o pkg/exf:
1270      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1271      - correct Stefan-Boltzmann constant
1272      - new parameter for longwave surface emittance
1273      - separate some stuff from exf_bulkformulae into new routines  
1274        exf_radiation, exf_wind
1275      - add new parameters and constants: longwave emissivity for ocean, ice
1276        and snow, evaporation parameters over ice
1277      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1278        either wind from stress or stress from wind
1279    o pkg/thSIce:
1280    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1281    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1282       and THSICE_CALC_THICKN
1283    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1284    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1285      to make debugging easier.
1286    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1287    o pkg/bulk_force:
1288      - clean-up comments and parameters ;
1289      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1290    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1291      generate new output for test-experiment: aim.5l_cs.thSI
1292    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1293      testreport accordingly
1294    
1295    checkpoint58e_post
1296    o SEAICE_CGRID adjoint done
1297    o R_STAR adjoint implemented.
1298      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1299      * need to sort out init. of h0facc, etc.
1300    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1301      to be able to use it in pure forward.
1302    
1303    checkpoint58d_post
1304    o upgrade simple test-experiment to tutorial example:
1305     step.1: duplicate the experiment and (step.2) will remove the old copy.
1306      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1307      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1308      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1309      tutorial_global_oce_biogeo    <- copy of dic_example
1310      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1311      tutorial_plume_on_slope       <- copy of plume_on_slope
1312      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1313      tutorial_global_oce_optim     <- empty for now (David ?)
1314      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1315     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1316    o correct a sign problem in cost_scat.F
1317    o obcs and ptracers: fix boundary conditions for advections schemes
1318      with larger stencil
1319    o thsice adjoint: start
1320    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1321      completeness
1322    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1323      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1324    o ptracers adjoint:
1325      * avoid extensive recomputatations
1326      * fix missing re-init. of gptr (missed by TAF)
1327    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1328      me to turn off the excessive output to STDOUT that this package produces
1329    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1330      and add those terms in Vector-Invariant formulation.
1331    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1332      if the control period (xx_hfluxperiod etc) is 0
1333    o in profiles pkg, clean routines and fix details
1334    o in ecco pkg, reading ssh data:
1335      fix problem in case the model does not start at iter0=0
1336    o fix mnc-pickup/restart for ptracers
1337    o new package prifiles:
1338      code to compute profile-based cost by Gael Forget
1339      (modifs in ecco, ctrl, autodiff)
1340    o Benign bug fix in initialization (spotted by M. Mazloff) of
1341      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1342    
1343    checkpoint58c_post
1344    o adjoint: finish NLFS adjoint and provide reference output in
1345      verification/global_ocean.90x40x15/results_ad_nlfs
1346    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1347      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1348      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1349      with SEAICE_CGRID defined.
1350    o move calendarDumps from "data" to "data.cal" and clean-up the code
1351      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1352    o add useEXF & useCAL flags (for now, set in hard-coded way)
1353    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1354      (were missing in NH mode, and wrong in quasihydrostatic mode).
1355      waiting for Chris updated version of calc_gw to add those CALLs.
1356    o fix bug in quasihydrostatic S/R ;
1357      add a test for this option: global_ocean.90x40x15.qshyd
1358    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1359      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1360    o add on/off flag useOffLine for package OFFLINE
1361    o seaice:
1362      - modify advection so that it works also on the C-grid
1363      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1364        problem in multi-tile runs with C-grid
1365      - add flags for clipping ice velocities and/or masking solver forcing
1366      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1367        C-grid solver
1368      - added a few comments to seaice_diffusion.F
1369      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1370        are now exclusive)
1371      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1372        required re-ordering the code a little:
1373       + make DAIRN global variable (defined in SEAICE)
1374       + move computation of the viscosities eta and zeta into a new separate
1375         routine (because I need to recompute them in seaice_ocean_stress.F)
1376    
1377    checkpoint58b_post
1378    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1379      update output.txt of exp. aim.5l_cs.thSI
1380    o various mnc cleanups and improvements:
1381      + shrink lookup tables by factor of ~4
1382      + better error reporting when running out of lookup space
1383      + able to handle longer path/file names (up to 500 chars)
1384    o adjoint:
1385      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1386      - TBD: "hidden" mom_vecinv recomp. in dynamics
1387    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1388     (allow to differentiate between forcing components using new integer flags:
1389      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1390     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1391    o ecco
1392      - enable trend removal from SSH anomaly obs.
1393    o adjoint
1394      - a fix for PmEpR when #undef EXACT_CONSERV
1395      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1396      - try to fix "hidden" recomp. in forward_step for NLFS
1397        (NLFS seems broken sometimes after I checked it in)
1398    o seaice:
1399     - add c-grid version of the dynamic solver:
1400       + three new routines that are the c-grid substitute lsr, dynsolver
1401         and ostres
1402       + put a few fields that were local to dynsolver into global common
1403         blocks, so that I can move the computation of stresses etc into
1404         seaice_lsr (saves coding but may break the adjoint).
1405     - replace more hardwired parameters by runtime parameters
1406     - add ice masks that mask the rhs of the implicit solvers where there
1407       is no ice (commented out in seaice_dynsolver, because i am not sure
1408       if this works properly), eventually this should replace the clipping
1409       of ice velocities in seaice_dynsolver to +/-40cm/s.
1410    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1411      include it only where its needed
1412    o move balancing of fluxes before the call of external_forcing_surf
1413    o seaice:
1414      - correct units of turning angles (now they are really in degrees)
1415      - move computation of GWATX/Y out of main routine into dynsolver
1416      - initialize GWATX/Y in seaice_init
1417    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1418      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1419    o seaice: add runtime flags for turning angles (default to zero)
1420    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1421      and trend from exf forcing and ctrl control adjustments
1422    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1423      (since checkpoint57x_post)
1424    o change the default rotation period to 86164.s = the Earth rotation
1425    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1426      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1427    o seaice advection: add code for choosing between the default (2nd order
1428      central differences) and multiDim advection schemes provided by
1429      pkg/generic_advdiff
1430    o seaice:
1431      - removed all references to SEAICE_GRID.h fields from
1432        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1433        (cubed-sphere configuration will change a little)
1434      - grid computations in seaice_init are obsolete now.
1435      - cleaned up code a little so that is easier to read (hopefully).
1436      - added new (better?) discretizations of default advection and diffusion
1437        (turn on with SEAICEuseFluxForm)
1438      - replace 1 in 3d global fields by kSurface in growth.F
1439      
1440    checkpoint58a_post
1441    o seaice:
1442      - bug fix in advect.F
1443    o shelfice:
1444      - separate shelfice load anomaly from pload (breaks with time
1445        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1446        Its default is 0., but it may be computed more cleverly from (unknown)
1447        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1448        done offline. A good approximation of the pressure load anomaly is
1449        necessary to avoid large initial adjustment processes underneath
1450        deep-reaching shelfice.
1451      - small fix in ISOMIP shelfice_thermodynamics
1452      - add more sophisticated thermodynamics of Hellmer (1989), this is
1453        now the default
1454      - give a few constants more intuitive names
1455    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1456      if bulk formulae are used in long integration (especially EmPmR). Turn
1457      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1458      if balancePrintMean, the imbalance that is substracted is printed to
1459      STDOUT.
1460    o fix bug (typo) in obcs_apply_eta.F
1461    o add a new package shelfice which enables us to model the circulation
1462      underneath shelf-ice with draughts of hundreds of meters.
1463     - works
1464     - to do: + include improved thermodynamics
1465              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1466                instead of new field kTopC
1467              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1468                instead of new field R_shelfIce and new code in ini_depth.F
1469                and ini_mask_etc.F?
1470              + adjust vertical mixing schemes?
1471    o seaice pkg:
1472     - add a cpp-flag to include a simple formula for a salinity dependent
1473       freezing point of sea water at the surface
1474     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1475       meridional stresses are now different (and hopefully correct)
1476    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1477       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1478       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1479    o pkg/diagnostics: add options and parameters for regional-statistics
1480       diagnostics ; define regions by reading a region-mask from a file
1481       (might add other options later)
1482    o pkg/bulk_force:
1483     - add option and parameters to use AIM surface-flux formulae.
1484     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1485       others forcing fields (defined in PARM05, parameter file "data") are loaded
1486       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1487     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1488     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1489     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1490       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1491     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1492    
1493    checkpoint58
1494    o add "--embed-source" option to genmake2 which, when the supporting
1495      tools can be compiled (as determined by genmake2) will turn on the
1496      embed_files package which then embeds the entire MITgcm source code
1497      (*.[fFhc] + Makefile) used for the build within the executable
1498      - requested by CNH but off by default
1499      - adds a paltry <9MB to the mitgcmuv executable in most cases
1500      - only writes the output when useEMBEDSRC in eedata is true
1501    o clean up 3-dim. relaxation codes:
1502      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1503      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1504      * Thanks to Tom Haine for testing!
1505    
1506    checkpoint57z_post
1507    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1508      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1509    o fix the pickup behavior for obcs in combination with ptracers
1510    o fix a bug in ptracers_external_fields_load
1511    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1512      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1513    o transfered surface NH pressure to eta field (if exactConserv).
1514    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1515         and update lab_sea output.txt file.
1516    o completing 3-dim. relaxation code: additional term
1517         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1518      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1519      * At compile time, in "EXF_OPTIONS.h" set
1520          #define  ALLOW_CLIMTEMP_RELAXATION
1521          #define  ALLOW_CLIMSALT_RELAXATION
1522      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1523          tauThetaClimRelax3Dim = 15552000.0,
1524          tauSaltClimRelax3Dim  = 15552000.0,
1525      * 3 cases:
1526          1) Use a constant-in-time 3-dim. field
1527          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1528          3) Real-time relax. to time-evolving prescribed field
1529    o Adding Laplacian-type smoothness constraint on
1530      initial and boundary (forcing) controls (ic, bc)
1531      * enable at compile-time via
1532        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1533      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1534      * Absolute scale somewhat unclear so far
1535      * no area weighting was included since no other cost term does so far
1536    
1537    checkpoint57y_post
1538    First step for a NLFS adjoint
1539    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1540    o new init. routines for calc_r_star, calc_surf_dr
1541    o still need to deal with ini_masks_etc
1542    o testreport seemed happy
1543    checkpoint57y_pre
1544    
1545    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1546    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1547    o add new offset feature to offline pkg (plus minor cleanup)
1548    o cfc fixes for final year of integration
1549    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1550      be in GCHEM_OPTIONS).
1551    
1552    checkpoint57x_post
1553    o fix testreport Pb in multiple test experiment.
1554    o cleanup our namelist syntax in verification:
1555      - make it more F95 standards compliant (some work still needed)
1556      - allows the vast majority of our tests to work with gfortran
1557    o Non-Hydrostatic:
1558     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1559     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1560    o Allow to apply AB on T,S rather than on AB(gT,gS):
1561     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1562     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1563       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1564     - need a "clever" read_pickup to restart from the other AB formulation
1565    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1566    o remove some unused variables (reduces number of compiler warnings)
1567    o adjoint
1568      * Disable useVariableViscosity for adjoint for time being
1569        (there are a number of extensive recomputations)
1570      * Initialize certain variables needed for adjoint
1571    
1572    checkpoint57w_post
1573    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1574                 fix the singleCpuIO RS version of MDSWRITEFIELD
1575       and add a WARNING if using globalFiles=T with multi-processors.
1576    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1577      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1578    o tracer advection scheme:
1579      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1580       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1581       was not very convenient).
1582      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1583       (further tests needed for the implicit DST & Flux-Limiter schemes).
1584    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1585      and sRef for convenience, handy, when you want to initialize
1586      ptracers in a large domain with a constant non-zero value. Also,
1587      untangle ptracers_init.F a little.
1588    
1589    checkpoint57v_post
1590    o change dome exp. to use variable viscosity in side-drag terms.
1591    o remove all the files from the cfc_offline test since they are now
1592      incorporated into tutorial_cfc_offline which has been producing
1593      identical results for a few days of testing
1594    o add new parameter: sideDragFactor to enable half-slip-side BC
1595      and change side-drag S/R to use viscosity from mom_calc_visc
1596      (can switch back by setting sideDragFactor=0.); affects results at
1597      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1598       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1599    o vorticity & strain are now computed without masking, to account for
1600      no-slip-side BC in variable viscosity calculation ; mask is applied
1601      anyway later on, before computing advection/coriolis terms.
1602    o modify exp4 to test new obcs support for reading from external files
1603      and for passive tracers
1604    o fix behavior of ptracers_monitor when monitor output is written to a
1605      netcdf-file; still not independent of monitor.F (writes in the same
1606      file).
1607    o change default value of tRef (put a uniform, meaningful value for ocean
1608      & atmos) and initialize sRef (was missing, as Martin mentioned).
1609    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1610      to be proportional to enstrophy dissipation length.  Thus,
1611       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1612      This is now consistent with Smagorinsky and with the manual.
1613    
1614    checkpoint57u_post
1615    o OBCS and PTRACERS: add open boundary support for passive tracers
1616      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1617        OB-values from file; this is not different from the way theta and salinity
1618        are treated
1619      - however, Orlanski-radiation conditions are not supported, and the model
1620        will stop if you use pTracers and Orlanski at the same time.
1621      - beefed up the rountine obcs_external_fields_load: now only those open
1622        boundary values are overwritten with values from files for which there
1623        are really files, otherwise the OB-fields remain untouched. This makes
1624        it possible to use different OBs at different ends of the domain (as
1625        with EXF)
1626    o reduce number of exch calls in shap_filt (s2).
1627    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1628      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1629    
1630    checkpoint57t_post
1631    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1632    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1633      same truncation, independent of the face number: affects affects several
1634      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1635    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1636      note that biharmonic viscosity + no-slip was not tested in any experiment.
1637    o fix bug in non-linear free-surf side-drag ; generate new output for
1638      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1639    o make mnc honor the writeBinaryPrec flag for most kinds of output
1640    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1641    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1642      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1643    o add brackets in multi-terms sum to get same truncation, independent of
1644      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1645      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1646    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1647      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1648      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1649      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1650      Suggested values of viscosity parameters found in mom_calc_visc.
1651      Many new viscosity diagnostics available.
1652    
1653    checkpoint57s_post
1654    o Add clearing-house for viscosity calculations, mom_calc_visc and
1655      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1656      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1657      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1658      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1659      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1660      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1661      ViscAhStrain and viscAhTension are now retired.
1662    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1663    o In response to JMC's bug report, genmake2 now ignores any soft-links
1664      that it finds in the *current* directory when searching for files.
1665      Soft-links found in any other source directories will still work as
1666      they did before.
1667    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1668      a C routine to unlimit the stack size
1669    o mnc-ify pkg/aim snapshot vars
1670    o mnc-ify pkg/land as requested by Daniel
1671    o various changes to mnc including:
1672      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1673      - output can now be grouped so that all files within a group
1674          change the ITER portion of their names in lock-step together
1675      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1676          and works with both EXCH1 and EXCH2 (but needs more testing)
1677      - writing works for all verification test cases w/ g77 on Linux
1678    
1679    checkpoint57r_post
1680    o make MNC variable initialization happen earlier
1681    o add diagnostics for (almost) each term of the momentum Eq.
1682    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1683    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1684    o remove MINIMAL_TAVE_OUTPUT option ;
1685      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1686    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1687      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1688    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1689    o add time-dependent SST, SSS control
1690    o cost terms in ecco/ modularized (new cost_generic.F)
1691    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1692    o new infrastructure for seaice model vs. obs misfits in seaice/
1693      * driver from the_main_loop.F is seaice_cost_driver.F
1694      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1695      * gradient check in Exp. 6a of natl_box_adjoint/
1696    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1697      (see README file)
1698    
1699    checkpoint57q_post
1700    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1701    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1702      - bug was reported by Jean-Michel and Ian Fenty
1703    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1704      update exp. cpl_aim+ocn output.
1705    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1706      Needed for high-res. runs with large global files
1707      to be able to limit tapelev size
1708    o Changed some tests for adjoint:
1709      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1710      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1711      * global_ocean.90x40x15/ back to default 3-level checkpointing
1712    o Modifications to enable scripted COMMON to MODULE conversion
1713      * verification/OpenAD/code/ has necessary scripts and description;
1714      * converts, compiles and runs successfully;
1715    
1716    checkpoint57p_post
1717    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1718    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1719      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1720    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1721    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1722      (was already the case for dissipation with mom_vecinv,
1723       and also the case for grad.PhiHyd when staggered-timeStep)
1724      This will allow to put dissipation out-off the AB time-stepping.
1725     Unfortunately, affects truncation error. Update output of exp. that "fails"
1726      (cg2d matching number) and leave the others for later: front_relax(10),
1727      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1728      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1729    
1730    checkpoint57o_post
1731    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1732      (2) its ready to be documented during the 20050801 DocFest
1733    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1734      for ideal_2D_oce and lab_sea on linux_ia32_g77
1735    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1736      in global1x1_tot/code_seaice_adj to access indices 32, 33
1737      (worth another tag)
1738    
1739    checkpoint57n_post
1740    o adding precip control xx_precip 32
1741    o adding swflux control xx_swflux 33
1742    o Replacing 10 forcing penalty cost routines by 1 generic.
1743    o Implementing partitioning in time-mean and variable adjustment
1744      for atmos. state.
1745    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1746  o in natl_box_adjoint:  o in natl_box_adjoint:
1747    * updated: results_bulk/    * updated exp 1 to 10
1748    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1749    o updated global1x1/*_seaice_adj/
1750      to incorporate latest changes
1751    o enable useSingleCpuIO for mdsio vector routines
1752      (applies in particular to tapelev I/O)
1753    o removed inefficient K-loop in all active_file*control*.F
1754    
1755  checkpoint57m_post  checkpoint57m_post
1756  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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