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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.1055 by jmc, Tue Jan 27 14:22:38 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  checkpoint61h
8  o moved ptracer ctrl index 17 -> 32  o pkg/diagnostics with "periodic averaging diagnostics":
9      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
10    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
11    o pkg/obcs: fix loop ranges for balancing code
12    o pkg/flt:
13     - improve criteria for finding which tile owns a float.
14     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
15    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
16      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
17      with ocean biogeo)
18    o pkg/flt:
19     - do some cleaning and fix the restart ;
20     - add output.txt in flt_example/results to get this pkg tested.
21    o genmake2: add an EXTENDED_SRC option and flag.
22       for now, cannot be turned on on command line (only through genmake_local)
23    o pkg/mdsio: read/write vector:
24     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
25     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
26       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
27     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
28      (drop to 4 digits matching for grad). But this test does not look very
29      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
30    
31    checkpoint61g
32    o pkg/flt:
33      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
34       + make OPTIONS file more standard.
35      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
36      - fix _BYTESWAPIO CPP-Flag
37      - standard reading of file-parameter "data.flt"
38      - fix argument list of S/R FLT_RESTART
39      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
40    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
41    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
42      a still unfixed compiler/optimization bug
43    
44    checkpoint61f
45    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
46      update results of global_ocean.cs32x15.icedyn test.
47    o move getcon.F from model/src to pkg/fizhi.
48    o pkg/exf: add parameter for extrapolation of temp up to the surface
49       and option to prevent negative evap (in bulk_largeyeager04 only).
50    o Prather Advection scheme: fix tracer conservation for divergent flow
51      (e.g., when using NonLin Free-Surface).
52    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
53    o gmredi (Visbeck-variable-K):
54     - add more parameters to Visbeck-variable-K.
55     - use a 5 points average for dSigmaR in Visbeck-K calculation
56       (more "homogenous": same stencil and same weights as in dSigmaH)
57     - update output of ideal_2D_oce experiment.
58    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
59      (#undef REAL4_IS_SLOW)
60     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
61       coordinate variable
62     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
63       (surface forcing fields), removes some of the functionality
64     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
65     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
66       probably not all: copy _RS surface flux fields to RL field before
67       calling DIAGNOSTICS_FILL
68     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
69       real*4 (CALL EXCH_*_RS) versions.
70     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
71       (generate new output).
72    
73    checkpoint61e
74    o gmredi (Visbeck-variable-K):
75      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
76      - change computation of Visbeck-K where Slope > Smax :        
77        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
78        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
79    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
80      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
81    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
82    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
83      does not become too large (to avoid precision problems in implicit-diffusion
84      solver); update ideal_2D_oce output.
85    o pkg ggl90:
86      - in ggl90_cal.F: compute only one set of visc/diff, used to
87        step forward TKE/T/S/momentum
88      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
89        have Prandlt =1)
90    o gmredi (fm07):
91      - add lower limit on Transition layer thickness + lower limit on 1/lambda
92      - allow to set few more params from data.gmredi
93    o pkg ggl90:
94          - add missing sqrt(2) factor in computation of mixing length
95            scale in ggl90_calc.F
96            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
97    
98    checkpoint61d
99    o adjoint modifs
100      - adapt to new field rhoInSitu
101      - allow to revert from StoreDynVars2D, StoreDynVars3D
102        to individual fields
103        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
104    o store 3-D (in-situ) density in commom block (DYNVARS.h)
105     - save 1 rho computation.
106     - no longer modify T & S inland when using down_slope pkg.
107    o gad_som : allow to switch to SOM advection for T & S without corresponding
108      pickup files (using new S/R: MDS_CHECK4FILE).
109    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
110      (for useSingleCpuIO to work in multi-threaded)
111    o pkg/shelfice:
112     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
113       with SHELFICEtopoFile in data.shelfice
114     - move code for reading ice shelf topography and modifying hFacC into separate
115       subroutines of the shelfice package
116     - separate initialisation of "fixed" and "variable" variables
117     - kTopC is not (yet) replaced by kSurfC, although this is possible
118    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
119    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
120      and rename:
121      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
122      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
123    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
124    
125    checkpoint61c
126    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
127      to add mass source/sink of fluid in the interior (3-D generalisation
128      of oceanic real-fresh water flux).
129    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
130    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
131    o new pkg: down_slope
132      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
133      - presently, modify T & S inland (dwnslp_calc_rho.F).
134        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
135      - implementation for ocean in P-coords not tested.
136      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
137    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
138      (to facilitate conversion of oceanic pkg to p-coordinate).
139    o change FIND_RHO to FIND_RHO_2D :
140      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
141    o new pkg: cheapaml
142    
143    checkpoint61b
144    o exch2:
145      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
146      - no longer depend on the order sequence (N,S,E,W).
147      - 3rd exchange no longer needed (tested with 24 tiles).
148      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
149      - exch_UV_A-grid readily available (but not yet tested).
150      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
151      (both are no longer needed) in exch_uv: no effect in forward run; but
152       get truncation error differences with adjoint exch.
153    o exch2:
154     - change index-bounds storage (moved from target to local tile,
155       more intuitive this way) ; rename/remove some variables.
156     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
157    
158    checkpoint61a
159    o exch2/matlab-topology-generator:
160      fix bug in index bounds for N-S internal exchange (hard to tell if this
161      had any effect on the solution).
162    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
163      is exceeded
164    o testreport: modify syntax of awk, so that it works also with
165      awk, and not only with nawk and gawk
166    
167    checkpoint61
168    o autodiff
169      Change default for TAF usage by removing argument '-nonew_arg'
170      This changes TAF subroutine argument list (ordering of active var.)
171      Omission of this flag leads to incompatibility w.r.t. TAMC
172      To restore TAMC-compatibility, need following modifs:
173      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
174      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
175      Tested TAF version is 1.9.22
176      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
177    
178    checkpoint60
179    --->>> This is the last checkpoint for which generating the adjoint
180    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
181    --->>> by default.
182    --->>> Future checkpoints will ommit this flag by default.
183    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
184    o pkg/grdchk: Add gradient check to etan0 perturbations.
185    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
186    o pkg/autodiff: more flexibility in zeroadj.
187      model/src: modifying do_oceanic_phys.F accordingly.
188    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
189    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
190      special setup of gmredi for which the adjoint is stable
191      enough for parameter optimization.
192    o bridging the gap between eddy stress and GM.
193      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
194          along with a change in CPP option (now ALLOW_EDDYPSI).
195      -> when using GM w/ GM_AdvForm:
196          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
197          is applied either in the tracer Eq. or in momentum Eq.
198          depending on data.gmredi (intro. GM_InMomAsStress).
199      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
200      The key modifications are in model/src/taueddy_external_forcing.F
201      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
202    
203    checkpoint59r
204    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
205      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
206      fix option to read coriolis(@ cell-corner) from files with CS-grid.
207    o pkg/mnc: add some attributes to standard 1D-coordinate variables
208    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
209      mass points, when using mnc for output
210      - add runtime parameter (missing_value, missing_value_int) to override
211        default (which is the value of getcon('UNDEF'))
212    o pkg/mnc: prepare mnc for the actual use of missing values with the
213      diagnostics package: small fix in mnc_cw_readwrite.template and more
214      initialisation of never used fields
215      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
216      versions
217    o pkg/thsice/thsice_ini_vars.F added default initial values so that
218      thermodynamics sea ice solver does not blow up when some initial fields
219      are missing.
220    o move from external_forcing_surf.F to ini_forcing.F
221      the p-coord. hack consisting in using pLoad to set phi0surf ;
222      update output of tutorial_global_oce_in_p (affected @ truncation level).
223    o Freshen up a bit hs94.1x64x5, notably:
224      remove rotationPeriod and tRef=5*0. (adjoint only), and add
225      exactConserv=.TRUE.
226    o pkg/generic_advdiff:
227      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
228      applies to files where Temperature & Salinity 2nd Order moments are used.
229    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
230      this uses a dynamically allocated internal state data structure
231      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
232      and requires a fortran 90 compiler
233    
234    checkpoint59q
235    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
236       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
237    o Refresh tutorial_global_oce_biogeo, notably:
238      - change bathymetry (put back seamounts in ACC, use hFacs)
239      - change EOS (POLY3 --> JMD95Z)
240      - use Bryan-Lewis vertical diffusivity
241      - use multidimensional advection
242      - remove old virtual virtual in dic pkg, now done through ptracer pkg
243      - change a couple of parameters in dic pkg
244    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
245    o pkg/obcs: change default to OBCSfixTopo = .true.,
246      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
247      - replace "debugMode" with "debugLevel .GE. debLevB"
248    o implementation of TAF directives for gchem,cfc,dic
249    o remove "exp5" (replaced by tutorial_deep_convection).
250    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
251      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
252      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
253      --> changes results in exp4, seaice_obcs
254    o tutorial_deep_convection :
255      update the set-up and increase resolution and domain size ; start
256      from pseudo initial conditions = output at t=120mn in order to see
257      something happening when running testreport.
258    o pkg/seaice: add os7mp as an advection scheme
259                  add check for advection schemes
260                  add a flag for restoring T and S underneath sea ice
261    o pkg/my82: add netcdf-support and diagnostics
262    o thsice pkg:
263      - Now hsMax limits snow height by turning it into ice following
264        flooding scheme (and now conserving energy)
265      - Slight rewriting of the formula in thsice_calc_thick.F
266      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
267      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
268    
269    checkpoint59p
270    o gchem / dic / cfc :
271      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
272      - add new parameter files: "data.dic" & "data.cfc" ;
273      - various re-arrangement in initialisation & header file ;
274      - fix tutorial_global_oce_biogeo for multi-threaded test.
275    o pkg/dic: test for "pickup_dic" file when restarting ;
276      if no pickup-file, can restart with a re-initialised pH (same as it did
277      before) providing pickupStrictlyMatch is set to False.
278    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
279      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
280    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
281      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
282    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
283     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
284       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
285    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
286       scheme to use for vorticty-term ;
287     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
288       (with default selectVortScheme, return to original discretisation)
289     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
290    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
291    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
292      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
293      also fix diagnostics VISCAHW & VISCA4W.
294    
295    checkpoint59o
296    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
297    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
298      move a few statemens out the main loop into separate loops
299    o pkg/shelfice:
300      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
301        (kg/m^2/s), does not break tests, because in verification/isomip,
302        rhoConstFresh=rhoConst (by accident)
303      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
304      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
305        new file model/src/seawater.F, so that they are available for all pkgs.
306      - convert potential temperature into in-situ temperature. This changes the
307        isomip tests => update tests
308    o add a flag writePickupAtEnd (default=true) to be able to suppress
309      writing a pickup at the last timestep
310    o tools/mpack-1.6 :
311      - disable automake (not working) and autoconf (not needed).
312      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
313        also cleaner with much less compilation warnings.
314    o pkg/profiles:
315      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
316      (for "less than 32 characters name" compiler requirement)
317    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
318      conditions that have a different sampling frequency than S/T/U/V obcs
319    o pkg/diagnostics (stats-diags):
320      - fix global Min/Max in case 1 processor get only empty tiles
321    o genmake2: replace (4 times)
322         make genmake_tc_1.o >> genmake_warnings 2>&1
323      with
324         COMM="$CC $CFLAGS -c genmake_tc_1.c"
325         echo $COMM >> genmake_warnings
326         $COMM >> genmake_warnings 2>&1
327      to make genmake2 always see the value of CC as specified in the optfile.
328    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
329      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
330      - modify verification advect_cs test to test SOM-advection on CS-grid.
331    o pkg/ctrl:
332      - Rewrite of ctrl_map_ini_ecco.F,
333        introducing a generic routine (ctrl_map_ini_gen.F).
334      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
335    
336    checkpoint59n
337    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
338      number in dedicate array "hdiag":
339      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
340        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
341      - many small changes (integer format) for large number of diagnostics
342      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
343        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
344    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
345      usingSphericalGrid, this allows to define the rotated grid coordinates
346      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
347      geographical coordinates according to the inverse of the rotation defined
348      by the Euler angles, so that Coriolis parameter and online-interpolation by
349      exf works with the geographical coordinates on XC/YC/XG/YG.
350      Naturally, this feature does not work with all packages, so some
351      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
352      profiles), because there the coordinates are assumed to be regular
353      spherical grid coordinates.
354    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
355      - introduce isopycnal diffusion coefficient control.
356    o tools/adjoint_options:
357      - additional control vector components.
358    o pkg/mnc: have mnc create marginally meaning full coordinate variables
359      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
360    o pkg/mypackage:
361      - add example of read/write pickup for state-var ;
362      - add entry points to the main code for state-vars diags & write-pickup.
363    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
364      transitions for useExfYearlyFields
365      - add new subroutine that determines the file to read from for
366        use*YearlyFields = .TRUE. and .FALSE.
367      - add a verification experiment to global_with_exf that tests
368        useExfYearlyFields with USE_EXF_INTERPOLATION defined
369    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
370      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
371      subroutines (which could be generated from a template, because they are
372      almost identical), for now they are included in obcs_prescribe_read.F for
373      simplicity
374    o pkg/exf:
375      - add a little more diagnostic to exf_interp_read (in analogy to
376        mds_read_field, can be turned off with debugLevel < debugLevA=1)
377      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
378        ugly but fast by unrolling short inner loops, inserting a unroll=8
379        directive in routine lagran, and splitting a loop and making do while the
380        outermost loop (the latter requires the intoduction of index arrays)
381    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
382    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
383      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
384    o verification/seaice_obcs: updated for restart test and latest options
385    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
386      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
387      for now this is only available for the C-grid code and also within
388      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
389    
390    checkpoint59m
391    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
392      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
393    o gad_som : fix flux output (& diagnostics) to have same units as other  
394      advection scheme fluxes (was previously multiplied by deltaT).  
395    o added verification/seaice_obcs both to test seaice open boundaries
396      and to provide an example matlab scrpt for generating them
397    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
398    o pkg/salt_plume: clean up salt_plume_frac.F to
399      remove redundancy in PlumeMethod 1 and 4
400    o pkg/kpp: added saltplume diagnostics
401    o pkg/obcs and pkg/seaice:
402      - do not set uice and vice to zero when OB*icefile are unspecified
403      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
404      - moved seaice tracer obcs after call to seaice_growth
405    o pkg/salt_plume: added various options for salt plume depth
406      criterion and for vertical distribution of the salt
407    
408    checkpoint59l
409    o pkg/ptracers: new version of ptracers pickup:
410      read meta file and write only fields which are needed to restart.
411      ( same logic as main pickup file ; also using pickupStrictlyMatch )
412    o pkg/seaice:
413      - add timescale for melting due to warm mixed layer as a means of
414        setting SEAICE_availHeatFrac more conveniently
415      - add a CPP-flag/runtime parameter check for flooding algorithm
416      - reformulated availHeat in seaice_growth.F to be independent of AREA
417    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
418      unit changes
419    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
420    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
421      SX vector computer.
422    o pkg/seaice:
423      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
424        seaice forcing fields can now be read only through pkg/exf
425      - removed some unused halos
426    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
427    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
428      or U/VICE from U/VWIND before computing U/VSTRESS
429    
430    checkpoint59k
431    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
432      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
433    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
434      all experiments pass when compile with un-initialised var. checking option.
435    o added pkg/salt_plume
436    o script to test restart (for now, in MITgcm_contrib/jmc_script)
437    o pkg/seaice: new read/write pickup version.
438      read meta file and write only fields which are needed to restart.
439      ( same logic as main pickup file ; also using pickupStrictlyMatch )
440    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
441    o lab_sea.hb87: modify the domain & update output.hb87.txt :
442      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
443      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
444      process. Fixed here by closing the domain at the Northern boundary.
445    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
446    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
447      a set of consecutive levels in/from a 3-D array.
448    o pkg/ptracers:
449      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
450      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
451    
452    checkpoint59j
453    o in pkgs: dic, obcs, offline, rbcs:
454      standard way to compute coeff. for time interpolation between 2 time reccords
455      which retains full precision (& make results less dependent on compiler).
456      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
457    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
458      packages instead of reading ice cover and wind speed separately
459    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
460     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
461      to allow to compile customized code before the update)
462    o cleaning-up:
463      - fix CPP instruction syntax in pkg/obcs
464      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
465        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
466      - fix some threads issue in IO parts.
467    o pkg/dic:
468      - add tons of "_d 0" (--> much better testreports !)
469       and then update outputs of tutorial_global_oce_biogeo
470    o pkg/mom_fluxform:
471      add a special version of momentum advection intended to conserve momentum
472      next to a bathymetry step or a coastline edge. (default = off = #undef)
473    o new read/write pickup version:
474      - for now, only implemented for main (mdsio) pickup file.
475      - write out only what is needed to restart; merge pickup_nh , pickup_ph
476        and main pickup together.
477      - read meta file; read only what is needed to restart; stop if a field
478        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
479        if it make sense (even if the restart is not perfect).
480      - if no meta file, assume that pickup to read corresponds exactly to
481        a pickup that would currently be written.
482      - read pickup written in the old format (until checkpoint59i) if it
483        recognizes an old meta file (no field-list).
484      - add a meta file in exp. which starts from a pickup: 2 cases:
485        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
486         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
487        b) a meta file describing the content of the associated pickup file
488         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
489    o pkg/mdsio & pkg/rw:
490      - new routine to read a meta file ; new set of routine to read
491        Multiple-fields file (with meta file).
492    o added open boundary conditions capability for seaice
493        HSNOW, HSALT, UICE, and VICE
494    
495    checkpoint59i
496    o adjoint:
497      * fix multiDimAdvection adjoint
498        (partial recomputation problem by TAF for fVerT(:,:,kDown)
499        and comlev1 size definition (maxpass vs. max. number of tracers)
500      * verification/global_ocean.90x45x15 adjoint now tests
501        NLFS and multiDimAdvection using DST3 (=30)
502      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
503    o pkg/kpp: add "_d 0" to real constant (if missing);
504      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
505      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
506    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
507      for internal parameters related to restart process (formerly from PARAMS.h)
508      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
509    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
510      as argument. (only atm2d & obcs write_pickup have not yet been updated)
511    o pkg/monitor:
512      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
513      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
514      - account for deep Atmosphere factor and density factor (anelastic)
515    o added open boundary conditions capability for seaice HEFF and AREA
516    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
517      thermodynamics
518      - requires a little reorganization, which affects the testreport results
519        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
520        so that now the conservative form is tested
521      - add a few comments
522    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
523    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
524    o add new diagnostics to seaice: advective, diffusive fluxes (only for
525      multidim-advection, for scheme 2 they are not filled) and transports,
526      thermodynamic growth rates
527    o change units of EmPmR (inside the code, + within coupling interface)
528      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
529      Affects results @ truncation level (cg2d match) and update output of
530       experiments: lab_sea(6), global_ocean.90x40x15(10),
531      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
532      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
533      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
534      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
535    
536    checkpoint59h
537    o pkg/exf:
538      - improve vectorization by moving if-statement out of loops in
539        exf_mapfields, exf_radiation
540      - exf_bulkformulae.F: introduce 2D fields and vectorize code
541    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
542    o testreport:
543      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
544        monitor & update offline_exf_seaice exp. output.
545      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
546    o pkg/seaice:
547      - bug fix in the evp solver: boundary conditions were affected be
548        masking of zMax/zMin (changes results)
549      - minor bug fix in boundary conditions in seaice_calc_strainrates
550        (changes results for no_slip)
551      - seaice_lsr.F: make interpolation of eta dependent on boundaries
552      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
553      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
554        stress formulation and no-slip boundary conditions
555    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
556      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
557    o pkg/seaice: a first HSALT time stepping equation has been checked in
558    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
559      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
560      without requiring DO-IF statements
561    o pkg/thsice:
562      use continuous power-law function for partition of energy between lateral
563      melting/freezing and thinning/thickening ; old code using step function
564      still available with #undef THSICE_FRACEN_POWERLAW
565      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
566    o testreport: change AD testing : check against results/output_adm.txt
567      using same scripts as for forward test.
568    
569    checkpoint59g
570    o adjoint testing: in preparation for changing testreport:
571      - output format: cost and grad written on separated lines
572      - ad output results in directory "results" (instead of "results_ad")
573    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
574    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
575    o pkg/ecco: allow user defined cost function contributions
576    o testreport:
577      Allow to choose (per experiment) the list of tested output variables
578       and the main variable (used to issue a pass/FAIL ) ;
579      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
580      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
581      Also modify printing of summary:
582       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
583       b) echo the list of tested variables in the individual summary.txt of
584          each experiment.
585    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
586      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
587      (but still depend on the tile decompostion of the domain).
588    o pkg/seaice: change a discretization detail to make the B-grid code
589      "more symmetric". This change is likely to remove all "ridges/leads" that
590      where quasi-aligned with the grid in B-grid solutions. It may also be
591      the solution to the stress coupling issues with the B-grid.
592    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
593      remove .cvsignore from input dir. (since testreport no longer run here).
594    o pkg/thsice:
595     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
596     - fix reshaping of sea-ice just after advection:
597       melt all the ice only if ice-volume is too small.
598     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
599       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
600     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
601    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
602      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
603    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
604      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
605      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
606      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
607      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
608      -> update output.txt
609    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
610     this affects truncation error: -> update output.txt of exp:
611      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
612      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
613    
614    checkpoint59f
615    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
616    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
617      a bounded range (in forward mode)
618    o pkg/ecco, ctrl, autodiff and mom_common:
619     internal parameter controls, completements of implementations
620    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
621    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
622      (not seem any difference in testing results).
623    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
624       at face corners.
625    o pkg/generic_advdiff:
626     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
627      loop range indices for computing vertical advection tendency
628      and do the calculation in the interior only (no overlap) ;
629      for now, only implemented for SOM advection (to save CPU time).
630     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
631    o exch2 adjoint
632      First set of changes:
633      - add exch2 hand-written adjoint templates
634      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
635        This will require cleanup in pkg/autodiff/*.F
636        (changed routines currently kept separate in verif. code/)
637      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
638        that used to hide exch2 or cubed-sphere specific code
639        (commented via 'cph-exch2')
640    o pkg/seaice
641      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
642    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
643       output of global_ocean.cs32x15.thsice .
644    
645    checkpoint59e
646    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
647      for B-grid vector (not yet tested) and C-grid vector (<- only used
648      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
649    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
650      (#ifdef ALLOW_SALT_PLUME)
651    o gather_2d/scatter_2d: removed halo regions
652    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
653      scheme and the corresponding test case (under front_relax dir). For now,
654      only available with Skew-flux form and not yet tested in realistic set-up.
655      adjoint: store directives updated, but gradient checks deteriorated,
656      so maybe GM/Redi adjoint is now broken.
657    o seaice adjoint
658      * add AREA, HEFF, HSNOW as control variable
659        (should not change lab_sea results)
660      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
661    o pkg/seaice:
662      * added computation of saltFlux in seaice_growth;
663        For time being, sea ice salinity is assumed constant
664        contribution of snow flooding to freshening of sea ice is neglected.
665        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
666        defaults to 0.0 in order to maintain backward compatibility.
667        Typical values for SEAICE_salinity are 4 to 10 g/kg.
668      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
669      * added SEAICE_availHeatFrac, which specifies fraction of surface level
670        heat content used to melt or grow ice
671      * commented out cap of HICE: it helps keep ice thinner
672      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
673      * applied OBCS T/S mask to HEFFM sea ice mask
674    
675    checkpoint59d
676    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
677     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
678     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
679    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
680     and change default value of parameter "GM_Small_Number";
681     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
682       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
683       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
684    o pkg/ecco: cost function when applying pkg/smooth to controls
685    o pkg/ctrl: add forcingPrecond run time parameter
686    o pkg/seaice:
687     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
688     - fix bug in metric terms of u-equation in LSR solver (implicit part),
689       changes verification/lab_sea
690     - rearrange implicit part of u-equation in LSR solver to make it easier to
691       read, understand, and debug. This causes changes at the truncation level.
692     - fix (serious) bug in the boundary conditions (sign error in the implicit
693       part) of the LSR solver. Changes all LSR results.
694     - fixed problem with HSNOW initialization to avoid thick snow when AREA
695       is initilized with small values - does not change lab_sea results.
696     - added HsnowFile initialization capability
697    o pkg/smooth: addition to model/src and pkg/ctrl so allow
698     initialization of pkg/smooth and application to control vector
699    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
700    o dependencies: pkg/profiles requires pkg/cal
701    o pkg/profiles:
702     - added option ALLOW_PROFILES_GENERICGRID
703         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
704         that interpolation information (grid points and coefficients) is provided
705         within the netcdf input files.
706         -> sample matlab scripts can be found in MITgcm_contrib/gael
707         that allow you to prepare netcdf input files.
708     - also modified: cleaner include statements, cleaner error print statements,
709       cleaner stops when error, and more tests of the netcdf input files consistency.
710    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
711    o pkg/seaice:
712     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
713       requires a new routine: seaice_diagnostics_fill.F
714     - make sure that seaice does not move if not forced (pressure replacement
715       method, Hibler and Ip, 1995), changes results
716     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
717     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
718       It is turned off by default (=-1.), because it changes the results.
719     - make it possible to read AREA from a file, too.
720    
721    checkpoint59c
722    o add S/R and diagnostics for oceanic mixed-layer depth
723    o move GMRedi call after all vertical mixing schemes (including KPP)
724    o pkg/thsice:
725     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
726      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
727    o pkg/obcs:
728     - bug fix for balance code
729    o pkg/seaice:
730      - allow values of SEAICE_elasticParm > 1
731      - add new parameter SEAICE_evpTauRelax as an alternative
732        to SEAICE_elasticParm
733      - make lsr boundary conditions free slip (by default), changes result
734      - add code for no slip boundary conditions for lsr
735      - set minimum of zeta to zero (and not 4e8) (changes results)
736      - add a cap on AREA after advecting AREA if seaice_growth is not called
737    o change calculation of Visbeck K:
738      - no longer depend on tapering scheme; instead, compute slope (limited
739        by GM_maxSlope). this is equivalent to what was comuted before with
740        clipping or linear tappering.
741      - fix vertical averaging (wrong by 1/2 level)
742      - leave the old version (but will not be maintained) within
743        #ifdef OLD_VISBECK_CALC / #endif
744      - update output of exp. ideal_2D_oce
745    o change error catch in calc_r_star to improve vectorization
746    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
747      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
748    o adjoint:
749      Re-organized adjoint checkpointing according to Matt Mazloff
750      (but with modifs/completions/cleanups)
751      Storing is now bundled into large arrays to optimized I/O
752      (and second step in cleanup of the_main_loop)
753    
754    checkpoint59b
755    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
756      - export/import (between ocean & coupler) fields needed for ocean DIC.
757    o pkg/seaice:
758      - get rid of three more exchanges seaice_calc_viscosities (required
759        different loop boundaries in seaice_lsr and seaice_ocean_stress)
760      - bug fix in seaice_ocean_stress (update of lab_sea required)
761      - reduce loop boundaries to necessary minimum also in seaice_evp
762      - go back to the old way of computing deltaC/Z as the adjoint likes that
763        better
764    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
765      passive tracer to an Age Tracer) + update output.txt
766    o pkg/exf:
767      - implement A-grid / C-grid selection for wind-stress input files.
768      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
769      for now, in exf_bulk_largeyeager04.F only :
770      - change implementation for case where windspeed + 2. components wind-stress
771        are read-in. AND use rhoConstFresh to convert evap.
772    o pkg/seaice:
773      - use correct EXCH_UV for wind-forcing (on A-grid).
774      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
775        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
776    o pkg/exf:
777      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
778      EXF_INTERPOLATION:
779      - merge global_with_exf/code version of exf_interp_read.F
780        to the main code ;
781      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
782        reading the file ; Important: This options needs to be defined to recover
783        previous code.
784        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
785      - no longer loose real*8 precision along the way when using exf_iprec=64.
786    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
787      - change discretisation of evp-solver in order to avoid another exchange
788        (changes lab_sea) and clean up a little
789      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
790        help the adjoint (this also changes the results slightly)
791      - add a few "_d 0" where they had been missing in seaice_evp.F
792      - cleaning up: remove unused seaice_calc_rhs.F
793    o pkg/exf: some cleaning-up:
794      - change various "constants" into runtime parameters
795      - cleaned-up Large&Yeager04 routine which should eventually
796        replace exf_bulkformulae.F (changed names of S/R and CPP)
797        and merged various ALLOW_ATM_WIND options
798     only used with thsice pkg (in thsice_get_exf.F):
799      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
800        which are used when useStabilityFct_overIce=TRUE (= the default)
801      - change default values of ice & snow emissivity and scale downward LW
802        by ice & snow emissivity.
803    o pkg/thsice:
804     fix few little problems, in thsice_calc_thickn.F:
805      - growth vertically (and not laterally) if iceFrac == iceMaskMax
806      - melt only laterally if hIce < hThinIce (as the comments say)
807      and in thsice_extend.F:
808      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
809      - start to form ice as soon as the minimum ice-volume is reachable.
810     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
811      and cpl_aim+ocn
812    o pkg/kpp
813     - move computation of surface related input fields to KPP into a new
814       subroutine kpp_forcing_surf.F
815     - remove wrong (within bi,bj loops) EXCH calls.
816     - little cleaning (add argument myThid in last position, cvs header ...)
817     - for now, fix conservation problem by exchanging KPPviscAz (may not
818       be the best fix)
819    o pkg/seaice
820     - check for inconsistent evp parameter/cpp-flag combination
821     - remove leftover errIO flat for obsolete name list error handling
822    o OpenAD
823     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
824    
825    checkpoint59a
826    o pkg/seaice: some parameter clarifications and a little bit of clean up
827    o pkg/thsice: rename run-time parameters:
828       himin       -> hIceMin
829       himin0      -> hThinIce
830       hihig       -> hThickIce
831       i0          -> i0swFrac
832       transCoef   -> bMeltCoef
833       frac_energy -> fracMelting
834      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
835       with default values (for now) that do not change the results.
836      remove old version of thsice vars advection in pkg/seaice.
837    o in FFIELDS.h:
838      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
839      - make pLoad & sIceLoad always available (but still only used if
840         ATMOSPHERIC_LOADING is #define).
841    o pkg/kpp: replaced _KPP_RL with _RL
842    o bug fixes for vertical diffusivity computations when both KPP and
843        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
844        are no longer updating the vertical diffusivity array
845        (passed as argument) but are (re-) setting those arrays.
846    o pkg/seaice: fix bug in evp solver, while doing that
847      - change (improve?) discretization of stress computations for both
848        cgrid-lsr and evp solver
849      - add a new routine to compute strain rates
850      - the above changes lab_sea results
851      - add no slip conditions for evp solver (off by default), lsr-version
852        may follow
853      - fix exchange for shear at Z-points (does not change lab_sea)
854      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
855        (to force the user to pick a time step since there is not "safe" way
856        of choosing it)
857      - add principal stress diagnostics
858      - rearrange fields for evp a little to avoid having to call a: too many
859        exchanges and b: exchanges for stress trensor components which we do
860        not have.
861      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
862        of evp, complete rewrite for lsr case (latter is does not yet work
863        in all cases)
864    o pkg/kpp: add code to have mixing in shelf ice caverns
865      - add myThid to all kpp routines (long overdue)
866    
867    checkpoint59
868    o pkg/exf:
869      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
870        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
871      - move exf header files from lower_case.h to UPPER_CASE.h ;
872        add missing cvs Header & Name
873      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
874      - add namelist param. selectStressGridPosition, exf_monFreq
875      - retire many _CLIM routines, and remove data.exf_clim
876        + params moved to data.exf
877        + climsst, climsss now handled by exf_set_gen, i.e.
878          climss?period=0 refers to constant field,
879          climss?period=-12 to monthly forcing
880      - split up namelists in data.exf
881    o pkg/seaice:
882      - remove seaice_exch and seaice_exch_uv
883      - remove superfluous exchange of theta
884      - add myThid to seaice_budget_ocean/ice
885      - add new interface for atmospheric wind forcing (C-grid only)
886        + new routine
887        + two new field (taux, tauy for stress over ice)
888        + removed one global field (DAIRN) for C-grid case only
889    o pkg/thsise
890      - 2nd set of modifs for thsice adjoint in conjunction with exf
891    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
892    
893    checkpoint58y_post
894    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
895      vertical diffusivity, similar to that in MOM4; turned on using
896      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
897      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
898    o Added capability for 3D specification of background vertical diffusion
899      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
900      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
901      "data" file that contains the 3D vertical diffusivity coefficients.
902    o ice dynamics (pkg/seaice) with thsice thermodynamics:
903      - add code within pkg thsice to advect & diffuse sea-ice fields
904      similar to (and will replace) what has been added in  seaice_advdiff.F,
905      but: - conserving Mass, Heat & Salt.
906           - better when using non-linear advection scheme (not yet fully tested)
907           - can also be used in atmospheric set-up (for now, only the diffusion).
908    
909    checkpoint58x_post
910    o IO option for global-file compact format:
911      - add options when generating topology (utils/exch2/matlab-topology-generator)
912      - add I/O capability (pkg/mdsio).
913      - adapt utils/matlab/rdmds.m to read this format.
914      for now long-line format not yet supported by pkg/mdsio (& exch2).
915    o shelfice: add a few diagnostics
916    
917    checkpoint58w_post
918    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
919      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
920      (and replace horiVertRatio in NH code).
921      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
922                         and tutorial_plume_on_slope (sensitive to truncation)
923    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
924      directly to drive seaice model (C-grid only)
925    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
926     - reintroduce computation of wind from stress,
927     - compute tau (in exf_bulkformulae.F) from windstress averaged to
928       mass points to avoid tau = 0
929     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
930    o rdmnc.m: make it work with "global" files created with gluemnc
931    o rdmnc.m : some improvements in dealing with singleton dimension
932      (tested on all testreport mnc output files).
933    o genmake2: disable pkg/profiles if netcdf test fails.
934    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
935    o move call to cal_readparms up to make calendar parameters/variable available
936      to all packages
937    
938    checkpoint58v_post
939    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
940      useDynP_inEos_Zc tested.
941    o pkg/exf: changes to properly interpolate/mask/scale initial fields
942    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
943      and portions thereof.  See read_cs.txt for description and examples.
944    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
945      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
946      following the great-circle arc between those 2 points.
947    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
948      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
949    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
950     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
951     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
952     - still needs work (not working with some options ; efficiency to improve)
953       and serious testing.
954     - use this scheme for temperature & salinity in 2 advection test exp.:
955       advect_xy & advect_xz, respectively.
956    
957    checkpoint58u_post
958    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
959    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
960    o testreport: add option "-skipdir" to skip some test.
961    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
962      momentum calculation.
963    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
964    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
965      remove checkpoint.F and the_correction_step.F (no longer used);
966      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
967    o add option (linFSConserveTr) to correct for tracer source/sink due to
968      Linear Free surface
969    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
970    o pkg/thsice: fix reading mnc-pickups
971    
972    checkpoint58t_post
973    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
974    o pkg/mdsio:
975     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
976       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
977       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
978     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
979     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
980       either MDS_READ_FIELD or MDS_WRITE_FIELD )
981     - new S/R (to replace MDSWRITEMETA), which allows to write more
982       informations (variable names, time ...) to meta files.
983     - modify rdmds.m to give back the meta file content.
984    o pkg/diagnostics: change vertical interpolation to be safer, and more
985       flexible (define p-levels to interpolate to in data.diagnostics);
986      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
987       diagnostic pointer.
988    o pkg/seaice: more cleaning up of seaice_growth, added many comments
989    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
990    o fix multi-category seaice:
991     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
992       SEAICE_MULTICATEGORY
993     - fix short wave heat flux
994    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
995       and allow to use EVP solver. Change forward lab_sea: test both EVP
996       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
997    o Initial check-in of lab_sea adjoint
998      (very similar to natl_box_adjoint/code_seaice)
999      * used C-grid and EVP solver
1000      * used KPP, GM/Redi
1001      * uses inAdExact=.TRUE.
1002      * gradient checks fail for both ADM and TLM
1003        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1004        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1005        issue is related to forward mismatch between g77 an ifort
1006    o pkg/seaice: overhaul of thermodynamics
1007     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1008     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1009     - move a few global fields out of SEAICE.h into seaice_growth.F and
1010       make them 2D (FICE/QNETO/ ...)
1011     - remove FO (it is the same as QNETO)
1012     - introduce a few local fields to avoid modifying external fields such
1013       as atemp, etc.
1014    
1015    checkpoint58s_post
1016    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1017      changed exf_set_gen.F so that
1018        genperiod=0 means input file is one time-constant field and
1019        genperiod=-12 means input file contains 12 monthly means
1020    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1021      this affects truncation error ; generate new output file for exp. which
1022      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1023        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1024        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1025        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1026        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1027        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1028    o start implementation of deep-atmosphere and anelastic formulation
1029    o verification: remove 2nd copy of input files and use script "prepare_run"
1030      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1031    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1032    o profiles: fix for multithreaded case
1033    
1034    o diagnostics: rename few diags:
1035      s/'PRESSURE'/'RCENTER '/g
1036      s/'TICE    '/'oceFreez'/g
1037      s/'TAUX    '/'oceTAUX '/g
1038      s/'TAUY    '/'oceTAUY '/g
1039      s/'SWFLUX  '/'oceQsw  '/g
1040      s/DIFx/DFxE/g
1041      s/DIFy/DFyE/g
1042      and add few ocean-forcing diagnostics:
1043      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1044    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1045      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1046      as actual snow thickness.  It now refers everywhere to effective snow
1047      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1048    
1049    checkpoint58r_post
1050    o modifications to pkg/seaice/growth.F, which change results of
1051      lab_sea experiment: fixes pertain to melting snow over open water, to
1052      masking EVAP under sea ice, and to using the correct AREA variable for
1053      computations of EVAP, PRECIP, HSNOW, and GHEFF
1054    o add ability to read bathy, salt, and theta using MNC (off by def)
1055    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1056      both are turned off by default and do no change any results
1057    o seaice advection with pkg/thsice: a step toward the use of non-linear
1058      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1059    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1060      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1061      in natl_box (affects results @ truncation level: update output.txt)
1062    o multi-threading and IO:
1063      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1064      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1065        (needed to work with SingleCpuIO): tested in all verif. exp.
1066    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1067      affects the results (but none of the verification test uses this scheme).
1068    o Adding some pkg/diagnostics capability to pkg/seaice
1069      (will certainly be subject to changes)
1070    o ctrl: adding new control variables:
1071      lwflux, lwdown, evap, snowprecip, apressure, runoff
1072    
1073    checkpoint58q_post
1074    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1075      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1076      high_res_cube configuration by 4% on Columbia.
1077    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1078      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1079      dynamical allocation (seems to work in multi-threaded).
1080    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1081      single CPU io) so that TAF does not have to see EESUPPORT.h
1082    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1083    
1084    checkpoint58p_post
1085    o obcs: stop if obcs is used with useCDscheme = .true.
1086    o shelfice:
1087     - fix a sign error so that no slip at shelfice interface works
1088     - remove stop for combination non-hydrostatic code and shelfice. That does
1089       not mean, that the results are correct, but at least they are numerically
1090       stable
1091    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1092    o added adjoint exch routined for all exch*3d* routines
1093      and updated flow directives
1094    
1095    checkpoint58o_post
1096    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1097      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1098    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1099      and clean-up reading/writing of pickup files.
1100    o fix local version of read/write pickup (NH part) in rotating_tank/code
1101    o simplify EXCH interface:
1102     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1103     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1104    o added the regrid package
1105    o shelfice:
1106     - add a simple boundary layer scheme to reduce noise
1107     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1108    
1109    checkpoint58n_post
1110    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1111       local variable (not in common block).
1112    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1113      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1114      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1115        to work with SingleCpuIO.
1116    o add "_d 0" to real constant of pkg/cfc subroutines ;
1117       update exp. cfc_exemple & tutorial_cfc_offline output files.
1118    o multi-threading and IO:
1119      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1120        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1121      - barrier before and after reading.
1122      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1123      - avoid using MDS_WRITELOCAL for LAND pkg output.
1124      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1125        common-block variables ; Allows multi-threading with master-thread IO.
1126    o change default MAX_NO_THREADS from 32 to 4 ;
1127      and stop cleanly when MAX_NO_THREADS is too small.
1128    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1129    
1130    checkpoint58m_post
1131    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1132       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1133    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1134       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1135       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1136    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1137        add MITgcm_tutorials (= code + all the tutorials)
1138    o ecco, option to compute cost for total ssh (mean+anom)
1139    o consistent with addition of ptracer and ssh in pkg/profiles
1140    o profiles: adding ptracer and ssh
1141    o testreport: change multi-test output-file name
1142      (from output.txt.{name} to output.{name}.txt)
1143    o profiles: now ok for mutli-tiles case
1144    o seaice: add 4 parameters for different advection schemes for area,
1145      (effective) seaice thickness, enthalphy, and snow height. Their default
1146      is the standard parameter SEAICEadvScheme
1147    o calc_gw:
1148     - add cosFacU in zonal viscous flux (harmonic.visc.).
1149     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1150       of tutorial_plume_on_slope.
1151    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1152    o calc_gw: true flux-form, account for horizontal grid spacing.
1153      update rotating_tank results, but not plume_on_slope (affected at
1154      truncation level, 11 digits).
1155    
1156    checkpoint58l_post
1157    o calc_gw:
1158     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1159     - remove side-drag for now (need to fix it); update plume_on_slope results.
1160     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1161    o commit code to make SST/SSS weights spatially variable
1162      (based on either variable in-situ or variable initial T/S weights)
1163    o pkg/ecco:
1164      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1165        now based on horizontally varying weights wthetaLev, wsaltLev
1166      * cost_averagesflags now returns year indices in addition to day, month
1167      * sflux balance is performed on annual basis
1168        (sflxumm, sfluxmm2, bal_sfluxmm)
1169      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1170        including separate counting and multipliers
1171    o pkg/rbcs
1172      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1173    
1174    checkpoint58k_post
1175    o testreport:
1176     - always build in dir. "build" (if not there, mkdir build instead of building
1177       & running in input)
1178     - run in dir run (if it exists), in build otherwise.
1179     - call prepare_run (if input/prepare_run exists)
1180     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1181    o pkg/exf modifications to interpolation and rotation routines for more
1182       reasonable treatment of North Pole singularity: for tracers North Pole
1183       value is set to northernmost zonal-mean value, for zonal velocity it is
1184       set to zero, and for meridional velocity it is set to northernmost value.
1185    o pkg/exf/exf_check_range.F
1186     - add tile index to diagnostics and move stop statement to the very
1187       end of the routine.
1188    o pkg/diagnostics: (diagnostics_main_init.F)
1189      define title of isomorphic variables according to the current config.
1190    o pkg/thsice with pkg/seaice dynamics:
1191    - fix domain of computation (interior only, required for exf) and do exchanges
1192    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1193    o towards a standard way of dealing with multi-threading in MONITOR
1194      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1195    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1196       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1197    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1198    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1199    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1200       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1201    o tracer advection:
1202     - clean-up and simplify calc_common_factors.F
1203     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1204       advection subroutine (but still not used within DST advection S/R)
1205    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1206    
1207    checkpoint58j_post
1208    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1209      from file (collects calls previously in FORWARD_STEP)
1210    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1211    o adjoint store dir. adjusted accordingly
1212    o genmake2
1213      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1214    
1215    checkpoint58i_post
1216    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1217      on wind stress (SEAICEstressFactor defaults to 1.)
1218    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1219      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1220    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1221      on CS-grid: no longer loosing mass.
1222    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1223    o pkg/ggl90: fix sloppy output and fix a bug
1224    o pkg/seaice: added SEAICEuseEVPpickup parameter
1225      - Set to false in order to start EVP solver with
1226        non-EVP pickup files when using SEAICEuseEVP
1227      - fix sign error in diffusion in seaice_calc_rhs
1228    
1229    checkpoint58h_post
1230    * Modifications for bottom topography control
1231      o replace hFacC by _hFacC at various places
1232      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1233      o add non-self-adjoint cg2d_nsa
1234      o update autodiff support routines
1235      o re-initialise hfac after ctrl_depth_ini
1236      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1237    * Adding verification for 5x5 box (4-layer) bottom topography control
1238    
1239    checkpoint58g_post
1240    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1241       used for mean seasonal cycle, mean diurnal cycle); add an example
1242       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1243    o pkg/ggl90:
1244      - add parameter (minimum surface kinetic energy)
1245      - fix bug (avoiding division by zero)
1246    o couple pkg/thsice to pkg/seaice:
1247      - modify advection in seaice to accomodate new scalar fields to be advected
1248      - only muliDimAdection scheme work with seaice/thsice
1249      - mapping of thsice-variables to seaice-variables, back and forth
1250      - does not break the verification experiments, but does not give the
1251        desired results either
1252    o pkg/seaice
1253      - make (default) second order advection a bit less confusing?
1254    
1255    checkpoint58f_post
1256    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1257      to pkg/seaice):
1258      - new routines thsice_map_exf and thsice_get_exf provide the interface
1259      - add an additional formal parameter to thsice_solve4temp
1260    o pkg/exf:
1261      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1262      - correct Stefan-Boltzmann constant
1263      - new parameter for longwave surface emittance
1264      - separate some stuff from exf_bulkformulae into new routines  
1265        exf_radiation, exf_wind
1266      - add new parameters and constants: longwave emissivity for ocean, ice
1267        and snow, evaporation parameters over ice
1268      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1269        either wind from stress or stress from wind
1270    o pkg/thSIce:
1271    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1272    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1273       and THSICE_CALC_THICKN
1274    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1275    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1276      to make debugging easier.
1277    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1278    o pkg/bulk_force:
1279      - clean-up comments and parameters ;
1280      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1281    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1282      generate new output for test-experiment: aim.5l_cs.thSI
1283    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1284      testreport accordingly
1285    
1286    checkpoint58e_post
1287    o SEAICE_CGRID adjoint done
1288    o R_STAR adjoint implemented.
1289      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1290      * need to sort out init. of h0facc, etc.
1291    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1292      to be able to use it in pure forward.
1293    
1294    checkpoint58d_post
1295    o upgrade simple test-experiment to tutorial example:
1296     step.1: duplicate the experiment and (step.2) will remove the old copy.
1297      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1298      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1299      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1300      tutorial_global_oce_biogeo    <- copy of dic_example
1301      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1302      tutorial_plume_on_slope       <- copy of plume_on_slope
1303      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1304      tutorial_global_oce_optim     <- empty for now (David ?)
1305      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1306     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1307    o correct a sign problem in cost_scat.F
1308    o obcs and ptracers: fix boundary conditions for advections schemes
1309      with larger stencil
1310    o thsice adjoint: start
1311    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1312      completeness
1313    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1314      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1315    o ptracers adjoint:
1316      * avoid extensive recomputatations
1317      * fix missing re-init. of gptr (missed by TAF)
1318    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1319      me to turn off the excessive output to STDOUT that this package produces
1320    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1321      and add those terms in Vector-Invariant formulation.
1322    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1323      if the control period (xx_hfluxperiod etc) is 0
1324    o in profiles pkg, clean routines and fix details
1325    o in ecco pkg, reading ssh data:
1326      fix problem in case the model does not start at iter0=0
1327    o fix mnc-pickup/restart for ptracers
1328    o new package prifiles:
1329      code to compute profile-based cost by Gael Forget
1330      (modifs in ecco, ctrl, autodiff)
1331    o Benign bug fix in initialization (spotted by M. Mazloff) of
1332      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1333    
1334    checkpoint58c_post
1335    o adjoint: finish NLFS adjoint and provide reference output in
1336      verification/global_ocean.90x40x15/results_ad_nlfs
1337    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1338      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1339      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1340      with SEAICE_CGRID defined.
1341    o move calendarDumps from "data" to "data.cal" and clean-up the code
1342      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1343    o add useEXF & useCAL flags (for now, set in hard-coded way)
1344    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1345      (were missing in NH mode, and wrong in quasihydrostatic mode).
1346      waiting for Chris updated version of calc_gw to add those CALLs.
1347    o fix bug in quasihydrostatic S/R ;
1348      add a test for this option: global_ocean.90x40x15.qshyd
1349    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1350      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1351    o add on/off flag useOffLine for package OFFLINE
1352    o seaice:
1353      - modify advection so that it works also on the C-grid
1354      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1355        problem in multi-tile runs with C-grid
1356      - add flags for clipping ice velocities and/or masking solver forcing
1357      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1358        C-grid solver
1359      - added a few comments to seaice_diffusion.F
1360      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1361        are now exclusive)
1362      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1363        required re-ordering the code a little:
1364       + make DAIRN global variable (defined in SEAICE)
1365       + move computation of the viscosities eta and zeta into a new separate
1366         routine (because I need to recompute them in seaice_ocean_stress.F)
1367    
1368    checkpoint58b_post
1369    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1370      update output.txt of exp. aim.5l_cs.thSI
1371    o various mnc cleanups and improvements:
1372      + shrink lookup tables by factor of ~4
1373      + better error reporting when running out of lookup space
1374      + able to handle longer path/file names (up to 500 chars)
1375    o adjoint:
1376      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1377      - TBD: "hidden" mom_vecinv recomp. in dynamics
1378    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1379     (allow to differentiate between forcing components using new integer flags:
1380      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1381     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1382    o ecco
1383      - enable trend removal from SSH anomaly obs.
1384    o adjoint
1385      - a fix for PmEpR when #undef EXACT_CONSERV
1386      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1387      - try to fix "hidden" recomp. in forward_step for NLFS
1388        (NLFS seems broken sometimes after I checked it in)
1389    o seaice:
1390     - add c-grid version of the dynamic solver:
1391       + three new routines that are the c-grid substitute lsr, dynsolver
1392         and ostres
1393       + put a few fields that were local to dynsolver into global common
1394         blocks, so that I can move the computation of stresses etc into
1395         seaice_lsr (saves coding but may break the adjoint).
1396     - replace more hardwired parameters by runtime parameters
1397     - add ice masks that mask the rhs of the implicit solvers where there
1398       is no ice (commented out in seaice_dynsolver, because i am not sure
1399       if this works properly), eventually this should replace the clipping
1400       of ice velocities in seaice_dynsolver to +/-40cm/s.
1401    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1402      include it only where its needed
1403    o move balancing of fluxes before the call of external_forcing_surf
1404    o seaice:
1405      - correct units of turning angles (now they are really in degrees)
1406      - move computation of GWATX/Y out of main routine into dynsolver
1407      - initialize GWATX/Y in seaice_init
1408    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1409      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1410    o seaice: add runtime flags for turning angles (default to zero)
1411    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1412      and trend from exf forcing and ctrl control adjustments
1413    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1414      (since checkpoint57x_post)
1415    o change the default rotation period to 86164.s = the Earth rotation
1416    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1417      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1418    o seaice advection: add code for choosing between the default (2nd order
1419      central differences) and multiDim advection schemes provided by
1420      pkg/generic_advdiff
1421    o seaice:
1422      - removed all references to SEAICE_GRID.h fields from
1423        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1424        (cubed-sphere configuration will change a little)
1425      - grid computations in seaice_init are obsolete now.
1426      - cleaned up code a little so that is easier to read (hopefully).
1427      - added new (better?) discretizations of default advection and diffusion
1428        (turn on with SEAICEuseFluxForm)
1429      - replace 1 in 3d global fields by kSurface in growth.F
1430      
1431    checkpoint58a_post
1432    o seaice:
1433      - bug fix in advect.F
1434    o shelfice:
1435      - separate shelfice load anomaly from pload (breaks with time
1436        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1437        Its default is 0., but it may be computed more cleverly from (unknown)
1438        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1439        done offline. A good approximation of the pressure load anomaly is
1440        necessary to avoid large initial adjustment processes underneath
1441        deep-reaching shelfice.
1442      - small fix in ISOMIP shelfice_thermodynamics
1443      - add more sophisticated thermodynamics of Hellmer (1989), this is
1444        now the default
1445      - give a few constants more intuitive names
1446    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1447      if bulk formulae are used in long integration (especially EmPmR). Turn
1448      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1449      if balancePrintMean, the imbalance that is substracted is printed to
1450      STDOUT.
1451    o fix bug (typo) in obcs_apply_eta.F
1452    o add a new package shelfice which enables us to model the circulation
1453      underneath shelf-ice with draughts of hundreds of meters.
1454     - works
1455     - to do: + include improved thermodynamics
1456              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1457                instead of new field kTopC
1458              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1459                instead of new field R_shelfIce and new code in ini_depth.F
1460                and ini_mask_etc.F?
1461              + adjust vertical mixing schemes?
1462    o seaice pkg:
1463     - add a cpp-flag to include a simple formula for a salinity dependent
1464       freezing point of sea water at the surface
1465     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1466       meridional stresses are now different (and hopefully correct)
1467    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1468       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1469       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1470    o pkg/diagnostics: add options and parameters for regional-statistics
1471       diagnostics ; define regions by reading a region-mask from a file
1472       (might add other options later)
1473    o pkg/bulk_force:
1474     - add option and parameters to use AIM surface-flux formulae.
1475     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1476       others forcing fields (defined in PARM05, parameter file "data") are loaded
1477       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1478     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1479     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1480     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1481       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1482     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1483    
1484    checkpoint58
1485    o add "--embed-source" option to genmake2 which, when the supporting
1486      tools can be compiled (as determined by genmake2) will turn on the
1487      embed_files package which then embeds the entire MITgcm source code
1488      (*.[fFhc] + Makefile) used for the build within the executable
1489      - requested by CNH but off by default
1490      - adds a paltry <9MB to the mitgcmuv executable in most cases
1491      - only writes the output when useEMBEDSRC in eedata is true
1492    o clean up 3-dim. relaxation codes:
1493      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1494      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1495      * Thanks to Tom Haine for testing!
1496    
1497    checkpoint57z_post
1498    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1499      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1500    o fix the pickup behavior for obcs in combination with ptracers
1501    o fix a bug in ptracers_external_fields_load
1502    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1503      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1504    o transfered surface NH pressure to eta field (if exactConserv).
1505    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1506         and update lab_sea output.txt file.
1507    o completing 3-dim. relaxation code: additional term
1508         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1509      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1510      * At compile time, in "EXF_OPTIONS.h" set
1511          #define  ALLOW_CLIMTEMP_RELAXATION
1512          #define  ALLOW_CLIMSALT_RELAXATION
1513      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1514          tauThetaClimRelax3Dim = 15552000.0,
1515          tauSaltClimRelax3Dim  = 15552000.0,
1516      * 3 cases:
1517          1) Use a constant-in-time 3-dim. field
1518          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1519          3) Real-time relax. to time-evolving prescribed field
1520    o Adding Laplacian-type smoothness constraint on
1521      initial and boundary (forcing) controls (ic, bc)
1522      * enable at compile-time via
1523        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1524      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1525      * Absolute scale somewhat unclear so far
1526      * no area weighting was included since no other cost term does so far
1527    
1528    checkpoint57y_post
1529    First step for a NLFS adjoint
1530    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1531    o new init. routines for calc_r_star, calc_surf_dr
1532    o still need to deal with ini_masks_etc
1533    o testreport seemed happy
1534    checkpoint57y_pre
1535    
1536    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1537    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1538    o add new offset feature to offline pkg (plus minor cleanup)
1539    o cfc fixes for final year of integration
1540    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1541      be in GCHEM_OPTIONS).
1542    
1543    checkpoint57x_post
1544    o fix testreport Pb in multiple test experiment.
1545    o cleanup our namelist syntax in verification:
1546      - make it more F95 standards compliant (some work still needed)
1547      - allows the vast majority of our tests to work with gfortran
1548    o Non-Hydrostatic:
1549     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1550     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1551    o Allow to apply AB on T,S rather than on AB(gT,gS):
1552     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1553     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1554       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1555     - need a "clever" read_pickup to restart from the other AB formulation
1556    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1557    o remove some unused variables (reduces number of compiler warnings)
1558    o adjoint
1559      * Disable useVariableViscosity for adjoint for time being
1560        (there are a number of extensive recomputations)
1561      * Initialize certain variables needed for adjoint
1562    
1563    checkpoint57w_post
1564    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1565                 fix the singleCpuIO RS version of MDSWRITEFIELD
1566       and add a WARNING if using globalFiles=T with multi-processors.
1567    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1568      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1569    o tracer advection scheme:
1570      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1571       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1572       was not very convenient).
1573      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1574       (further tests needed for the implicit DST & Flux-Limiter schemes).
1575    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1576      and sRef for convenience, handy, when you want to initialize
1577      ptracers in a large domain with a constant non-zero value. Also,
1578      untangle ptracers_init.F a little.
1579    
1580    checkpoint57v_post
1581    o change dome exp. to use variable viscosity in side-drag terms.
1582    o remove all the files from the cfc_offline test since they are now
1583      incorporated into tutorial_cfc_offline which has been producing
1584      identical results for a few days of testing
1585    o add new parameter: sideDragFactor to enable half-slip-side BC
1586      and change side-drag S/R to use viscosity from mom_calc_visc
1587      (can switch back by setting sideDragFactor=0.); affects results at
1588      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1589       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1590    o vorticity & strain are now computed without masking, to account for
1591      no-slip-side BC in variable viscosity calculation ; mask is applied
1592      anyway later on, before computing advection/coriolis terms.
1593    o modify exp4 to test new obcs support for reading from external files
1594      and for passive tracers
1595    o fix behavior of ptracers_monitor when monitor output is written to a
1596      netcdf-file; still not independent of monitor.F (writes in the same
1597      file).
1598    o change default value of tRef (put a uniform, meaningful value for ocean
1599      & atmos) and initialize sRef (was missing, as Martin mentioned).
1600    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1601      to be proportional to enstrophy dissipation length.  Thus,
1602       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1603      This is now consistent with Smagorinsky and with the manual.
1604    
1605    checkpoint57u_post
1606    o OBCS and PTRACERS: add open boundary support for passive tracers
1607      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1608        OB-values from file; this is not different from the way theta and salinity
1609        are treated
1610      - however, Orlanski-radiation conditions are not supported, and the model
1611        will stop if you use pTracers and Orlanski at the same time.
1612      - beefed up the rountine obcs_external_fields_load: now only those open
1613        boundary values are overwritten with values from files for which there
1614        are really files, otherwise the OB-fields remain untouched. This makes
1615        it possible to use different OBs at different ends of the domain (as
1616        with EXF)
1617    o reduce number of exch calls in shap_filt (s2).
1618    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1619      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1620    
1621    checkpoint57t_post
1622    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1623    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1624      same truncation, independent of the face number: affects affects several
1625      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1626    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1627      note that biharmonic viscosity + no-slip was not tested in any experiment.
1628    o fix bug in non-linear free-surf side-drag ; generate new output for
1629      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1630    o make mnc honor the writeBinaryPrec flag for most kinds of output
1631    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1632    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1633      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1634    o add brackets in multi-terms sum to get same truncation, independent of
1635      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1636      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1637    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1638      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1639      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1640      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1641      Suggested values of viscosity parameters found in mom_calc_visc.
1642      Many new viscosity diagnostics available.
1643    
1644    checkpoint57s_post
1645    o Add clearing-house for viscosity calculations, mom_calc_visc and
1646      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1647      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1648      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1649      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1650      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1651      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1652      ViscAhStrain and viscAhTension are now retired.
1653    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1654    o In response to JMC's bug report, genmake2 now ignores any soft-links
1655      that it finds in the *current* directory when searching for files.
1656      Soft-links found in any other source directories will still work as
1657      they did before.
1658    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1659      a C routine to unlimit the stack size
1660    o mnc-ify pkg/aim snapshot vars
1661    o mnc-ify pkg/land as requested by Daniel
1662    o various changes to mnc including:
1663      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1664      - output can now be grouped so that all files within a group
1665          change the ITER portion of their names in lock-step together
1666      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1667          and works with both EXCH1 and EXCH2 (but needs more testing)
1668      - writing works for all verification test cases w/ g77 on Linux
1669    
1670    checkpoint57r_post
1671    o make MNC variable initialization happen earlier
1672    o add diagnostics for (almost) each term of the momentum Eq.
1673    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1674    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1675    o remove MINIMAL_TAVE_OUTPUT option ;
1676      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1677    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1678      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1679    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1680    o add time-dependent SST, SSS control
1681    o cost terms in ecco/ modularized (new cost_generic.F)
1682    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1683    o new infrastructure for seaice model vs. obs misfits in seaice/
1684      * driver from the_main_loop.F is seaice_cost_driver.F
1685      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1686      * gradient check in Exp. 6a of natl_box_adjoint/
1687    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1688      (see README file)
1689    
1690    checkpoint57q_post
1691    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1692    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1693      - bug was reported by Jean-Michel and Ian Fenty
1694    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1695      update exp. cpl_aim+ocn output.
1696    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1697      Needed for high-res. runs with large global files
1698      to be able to limit tapelev size
1699    o Changed some tests for adjoint:
1700      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1701      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1702      * global_ocean.90x40x15/ back to default 3-level checkpointing
1703    o Modifications to enable scripted COMMON to MODULE conversion
1704      * verification/OpenAD/code/ has necessary scripts and description;
1705      * converts, compiles and runs successfully;
1706    
1707    checkpoint57p_post
1708    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1709    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1710      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1711    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1712    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1713      (was already the case for dissipation with mom_vecinv,
1714       and also the case for grad.PhiHyd when staggered-timeStep)
1715      This will allow to put dissipation out-off the AB time-stepping.
1716     Unfortunately, affects truncation error. Update output of exp. that "fails"
1717      (cg2d matching number) and leave the others for later: front_relax(10),
1718      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1719      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1720    
1721    checkpoint57o_post
1722    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1723      (2) its ready to be documented during the 20050801 DocFest
1724    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1725      for ideal_2D_oce and lab_sea on linux_ia32_g77
1726    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1727      in global1x1_tot/code_seaice_adj to access indices 32, 33
1728      (worth another tag)
1729    
1730    checkpoint57n_post
1731    o adding precip control xx_precip 32
1732    o adding swflux control xx_swflux 33
1733    o Replacing 10 forcing penalty cost routines by 1 generic.
1734    o Implementing partitioning in time-mean and variable adjustment
1735      for atmos. state.
1736    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1737  o in natl_box_adjoint:  o in natl_box_adjoint:
1738    * updated: results_bulk/    * updated exp 1 to 10
1739    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1740    o updated global1x1/*_seaice_adj/
1741      to incorporate latest changes
1742    o enable useSingleCpuIO for mdsio vector routines
1743      (applies in particular to tapelev I/O)
1744    o removed inefficient K-loop in all active_file*control*.F
1745    
1746  checkpoint57m_post  checkpoint57m_post
1747  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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