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revision 1.536 by jmc, Wed Aug 24 23:36:01 2005 UTC revision 1.1060 by jmc, Tue Feb 3 23:36:05 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 pkg/mdsio & rw:
8     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
9     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
10    o pkg/flt:
11     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
12       init_fixed & ini_varia.
13     - clean-up & simplify linear interpolation S/R:
14       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
15     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
16     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
17    o pkg/ggl90: a few modifications:
18     - fix bottom boundary condition, and interpolation of KappaE
19       near top and bottom
20     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
21     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
22     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
23    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
24      (maintain temporary backward compatibility, until next checkpoint)
25    
26    checkpoint61h
27    o pkg/diagnostics with "periodic averaging diagnostics":
28      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
29    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
30    o pkg/obcs: fix loop ranges for balancing code
31    o pkg/flt:
32     - improve criteria for finding which tile owns a float.
33     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
34    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
35      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
36      with ocean biogeo)
37    o pkg/flt:
38     - do some cleaning and fix the restart ;
39     - add output.txt in flt_example/results to get this pkg tested.
40    o genmake2: add an EXTENDED_SRC option and flag.
41       for now, cannot be turned on on command line (only through genmake_local)
42    o pkg/mdsio: read/write vector:
43     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
44     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
45       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
46     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
47      (drop to 4 digits matching for grad). But this test does not look very
48      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
49    
50    checkpoint61g
51    o pkg/flt:
52      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
53       + make OPTIONS file more standard.
54      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
55      - fix _BYTESWAPIO CPP-Flag
56      - standard reading of file-parameter "data.flt"
57      - fix argument list of S/R FLT_RESTART
58      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
59    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
60    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
61      a still unfixed compiler/optimization bug
62    
63    checkpoint61f
64    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
65      update results of global_ocean.cs32x15.icedyn test.
66    o move getcon.F from model/src to pkg/fizhi.
67    o pkg/exf: add parameter for extrapolation of temp up to the surface
68       and option to prevent negative evap (in bulk_largeyeager04 only).
69    o Prather Advection scheme: fix tracer conservation for divergent flow
70      (e.g., when using NonLin Free-Surface).
71    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
72    o gmredi (Visbeck-variable-K):
73     - add more parameters to Visbeck-variable-K.
74     - use a 5 points average for dSigmaR in Visbeck-K calculation
75       (more "homogenous": same stencil and same weights as in dSigmaH)
76     - update output of ideal_2D_oce experiment.
77    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
78      (#undef REAL4_IS_SLOW)
79     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
80       coordinate variable
81     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
82       (surface forcing fields), removes some of the functionality
83     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
84     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
85       probably not all: copy _RS surface flux fields to RL field before
86       calling DIAGNOSTICS_FILL
87     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
88       real*4 (CALL EXCH_*_RS) versions.
89     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
90       (generate new output).
91    
92    checkpoint61e
93    o gmredi (Visbeck-variable-K):
94      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
95      - change computation of Visbeck-K where Slope > Smax :        
96        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
97        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
98    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
99      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
100    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
101    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
102      does not become too large (to avoid precision problems in implicit-diffusion
103      solver); update ideal_2D_oce output.
104    o pkg ggl90:
105      - in ggl90_cal.F: compute only one set of visc/diff, used to
106        step forward TKE/T/S/momentum
107      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
108        have Prandlt =1)
109    o gmredi (fm07):
110      - add lower limit on Transition layer thickness + lower limit on 1/lambda
111      - allow to set few more params from data.gmredi
112    o pkg ggl90:
113          - add missing sqrt(2) factor in computation of mixing length
114            scale in ggl90_calc.F
115            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
116    
117    checkpoint61d
118    o adjoint modifs
119      - adapt to new field rhoInSitu
120      - allow to revert from StoreDynVars2D, StoreDynVars3D
121        to individual fields
122        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
123    o store 3-D (in-situ) density in commom block (DYNVARS.h)
124     - save 1 rho computation.
125     - no longer modify T & S inland when using down_slope pkg.
126    o gad_som : allow to switch to SOM advection for T & S without corresponding
127      pickup files (using new S/R: MDS_CHECK4FILE).
128    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
129      (for useSingleCpuIO to work in multi-threaded)
130    o pkg/shelfice:
131     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
132       with SHELFICEtopoFile in data.shelfice
133     - move code for reading ice shelf topography and modifying hFacC into separate
134       subroutines of the shelfice package
135     - separate initialisation of "fixed" and "variable" variables
136     - kTopC is not (yet) replaced by kSurfC, although this is possible
137    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
138    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
139      and rename:
140      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
141      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
142    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
143    
144    checkpoint61c
145    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
146      to add mass source/sink of fluid in the interior (3-D generalisation
147      of oceanic real-fresh water flux).
148    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
149    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
150    o new pkg: down_slope
151      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
152      - presently, modify T & S inland (dwnslp_calc_rho.F).
153        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
154      - implementation for ocean in P-coords not tested.
155      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
156    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
157      (to facilitate conversion of oceanic pkg to p-coordinate).
158    o change FIND_RHO to FIND_RHO_2D :
159      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
160    o new pkg: cheapaml
161    
162    checkpoint61b
163    o exch2:
164      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
165      - no longer depend on the order sequence (N,S,E,W).
166      - 3rd exchange no longer needed (tested with 24 tiles).
167      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
168      - exch_UV_A-grid readily available (but not yet tested).
169      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
170      (both are no longer needed) in exch_uv: no effect in forward run; but
171       get truncation error differences with adjoint exch.
172    o exch2:
173     - change index-bounds storage (moved from target to local tile,
174       more intuitive this way) ; rename/remove some variables.
175     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
176    
177    checkpoint61a
178    o exch2/matlab-topology-generator:
179      fix bug in index bounds for N-S internal exchange (hard to tell if this
180      had any effect on the solution).
181    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
182      is exceeded
183    o testreport: modify syntax of awk, so that it works also with
184      awk, and not only with nawk and gawk
185    
186    checkpoint61
187    o autodiff
188      Change default for TAF usage by removing argument '-nonew_arg'
189      This changes TAF subroutine argument list (ordering of active var.)
190      Omission of this flag leads to incompatibility w.r.t. TAMC
191      To restore TAMC-compatibility, need following modifs:
192      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
193      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
194      Tested TAF version is 1.9.22
195      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
196    
197    checkpoint60
198    --->>> This is the last checkpoint for which generating the adjoint
199    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
200    --->>> by default.
201    --->>> Future checkpoints will ommit this flag by default.
202    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
203    o pkg/grdchk: Add gradient check to etan0 perturbations.
204    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
205    o pkg/autodiff: more flexibility in zeroadj.
206      model/src: modifying do_oceanic_phys.F accordingly.
207    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
208    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
209      special setup of gmredi for which the adjoint is stable
210      enough for parameter optimization.
211    o bridging the gap between eddy stress and GM.
212      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
213          along with a change in CPP option (now ALLOW_EDDYPSI).
214      -> when using GM w/ GM_AdvForm:
215          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
216          is applied either in the tracer Eq. or in momentum Eq.
217          depending on data.gmredi (intro. GM_InMomAsStress).
218      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
219      The key modifications are in model/src/taueddy_external_forcing.F
220      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
221    
222    checkpoint59r
223    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
224      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
225      fix option to read coriolis(@ cell-corner) from files with CS-grid.
226    o pkg/mnc: add some attributes to standard 1D-coordinate variables
227    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
228      mass points, when using mnc for output
229      - add runtime parameter (missing_value, missing_value_int) to override
230        default (which is the value of getcon('UNDEF'))
231    o pkg/mnc: prepare mnc for the actual use of missing values with the
232      diagnostics package: small fix in mnc_cw_readwrite.template and more
233      initialisation of never used fields
234      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
235      versions
236    o pkg/thsice/thsice_ini_vars.F added default initial values so that
237      thermodynamics sea ice solver does not blow up when some initial fields
238      are missing.
239    o move from external_forcing_surf.F to ini_forcing.F
240      the p-coord. hack consisting in using pLoad to set phi0surf ;
241      update output of tutorial_global_oce_in_p (affected @ truncation level).
242    o Freshen up a bit hs94.1x64x5, notably:
243      remove rotationPeriod and tRef=5*0. (adjoint only), and add
244      exactConserv=.TRUE.
245    o pkg/generic_advdiff:
246      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
247      applies to files where Temperature & Salinity 2nd Order moments are used.
248    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
249      this uses a dynamically allocated internal state data structure
250      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
251      and requires a fortran 90 compiler
252    
253    checkpoint59q
254    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
255       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
256    o Refresh tutorial_global_oce_biogeo, notably:
257      - change bathymetry (put back seamounts in ACC, use hFacs)
258      - change EOS (POLY3 --> JMD95Z)
259      - use Bryan-Lewis vertical diffusivity
260      - use multidimensional advection
261      - remove old virtual virtual in dic pkg, now done through ptracer pkg
262      - change a couple of parameters in dic pkg
263    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
264    o pkg/obcs: change default to OBCSfixTopo = .true.,
265      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
266      - replace "debugMode" with "debugLevel .GE. debLevB"
267    o implementation of TAF directives for gchem,cfc,dic
268    o remove "exp5" (replaced by tutorial_deep_convection).
269    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
270      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
271      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
272      --> changes results in exp4, seaice_obcs
273    o tutorial_deep_convection :
274      update the set-up and increase resolution and domain size ; start
275      from pseudo initial conditions = output at t=120mn in order to see
276      something happening when running testreport.
277    o pkg/seaice: add os7mp as an advection scheme
278                  add check for advection schemes
279                  add a flag for restoring T and S underneath sea ice
280    o pkg/my82: add netcdf-support and diagnostics
281    o thsice pkg:
282      - Now hsMax limits snow height by turning it into ice following
283        flooding scheme (and now conserving energy)
284      - Slight rewriting of the formula in thsice_calc_thick.F
285      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
286      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
287    
288    checkpoint59p
289    o gchem / dic / cfc :
290      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
291      - add new parameter files: "data.dic" & "data.cfc" ;
292      - various re-arrangement in initialisation & header file ;
293      - fix tutorial_global_oce_biogeo for multi-threaded test.
294    o pkg/dic: test for "pickup_dic" file when restarting ;
295      if no pickup-file, can restart with a re-initialised pH (same as it did
296      before) providing pickupStrictlyMatch is set to False.
297    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
298      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
299    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
300      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
301    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
302     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
303       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
304    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
305       scheme to use for vorticty-term ;
306     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
307       (with default selectVortScheme, return to original discretisation)
308     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
309    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
310    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
311      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
312      also fix diagnostics VISCAHW & VISCA4W.
313    
314    checkpoint59o
315    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
316    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
317      move a few statemens out the main loop into separate loops
318    o pkg/shelfice:
319      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
320        (kg/m^2/s), does not break tests, because in verification/isomip,
321        rhoConstFresh=rhoConst (by accident)
322      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
323      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
324        new file model/src/seawater.F, so that they are available for all pkgs.
325      - convert potential temperature into in-situ temperature. This changes the
326        isomip tests => update tests
327    o add a flag writePickupAtEnd (default=true) to be able to suppress
328      writing a pickup at the last timestep
329    o tools/mpack-1.6 :
330      - disable automake (not working) and autoconf (not needed).
331      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
332        also cleaner with much less compilation warnings.
333    o pkg/profiles:
334      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
335      (for "less than 32 characters name" compiler requirement)
336    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
337      conditions that have a different sampling frequency than S/T/U/V obcs
338    o pkg/diagnostics (stats-diags):
339      - fix global Min/Max in case 1 processor get only empty tiles
340    o genmake2: replace (4 times)
341         make genmake_tc_1.o >> genmake_warnings 2>&1
342      with
343         COMM="$CC $CFLAGS -c genmake_tc_1.c"
344         echo $COMM >> genmake_warnings
345         $COMM >> genmake_warnings 2>&1
346      to make genmake2 always see the value of CC as specified in the optfile.
347    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
348      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
349      - modify verification advect_cs test to test SOM-advection on CS-grid.
350    o pkg/ctrl:
351      - Rewrite of ctrl_map_ini_ecco.F,
352        introducing a generic routine (ctrl_map_ini_gen.F).
353      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
354    
355    checkpoint59n
356    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
357      number in dedicate array "hdiag":
358      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
359        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
360      - many small changes (integer format) for large number of diagnostics
361      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
362        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
363    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
364      usingSphericalGrid, this allows to define the rotated grid coordinates
365      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
366      geographical coordinates according to the inverse of the rotation defined
367      by the Euler angles, so that Coriolis parameter and online-interpolation by
368      exf works with the geographical coordinates on XC/YC/XG/YG.
369      Naturally, this feature does not work with all packages, so some
370      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
371      profiles), because there the coordinates are assumed to be regular
372      spherical grid coordinates.
373    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
374      - introduce isopycnal diffusion coefficient control.
375    o tools/adjoint_options:
376      - additional control vector components.
377    o pkg/mnc: have mnc create marginally meaning full coordinate variables
378      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
379    o pkg/mypackage:
380      - add example of read/write pickup for state-var ;
381      - add entry points to the main code for state-vars diags & write-pickup.
382    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
383      transitions for useExfYearlyFields
384      - add new subroutine that determines the file to read from for
385        use*YearlyFields = .TRUE. and .FALSE.
386      - add a verification experiment to global_with_exf that tests
387        useExfYearlyFields with USE_EXF_INTERPOLATION defined
388    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
389      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
390      subroutines (which could be generated from a template, because they are
391      almost identical), for now they are included in obcs_prescribe_read.F for
392      simplicity
393    o pkg/exf:
394      - add a little more diagnostic to exf_interp_read (in analogy to
395        mds_read_field, can be turned off with debugLevel < debugLevA=1)
396      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
397        ugly but fast by unrolling short inner loops, inserting a unroll=8
398        directive in routine lagran, and splitting a loop and making do while the
399        outermost loop (the latter requires the intoduction of index arrays)
400    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
401    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
402      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
403    o verification/seaice_obcs: updated for restart test and latest options
404    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
405      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
406      for now this is only available for the C-grid code and also within
407      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
408    
409    checkpoint59m
410    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
411      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
412    o gad_som : fix flux output (& diagnostics) to have same units as other  
413      advection scheme fluxes (was previously multiplied by deltaT).  
414    o added verification/seaice_obcs both to test seaice open boundaries
415      and to provide an example matlab scrpt for generating them
416    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
417    o pkg/salt_plume: clean up salt_plume_frac.F to
418      remove redundancy in PlumeMethod 1 and 4
419    o pkg/kpp: added saltplume diagnostics
420    o pkg/obcs and pkg/seaice:
421      - do not set uice and vice to zero when OB*icefile are unspecified
422      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
423      - moved seaice tracer obcs after call to seaice_growth
424    o pkg/salt_plume: added various options for salt plume depth
425      criterion and for vertical distribution of the salt
426    
427    checkpoint59l
428    o pkg/ptracers: new version of ptracers pickup:
429      read meta file and write only fields which are needed to restart.
430      ( same logic as main pickup file ; also using pickupStrictlyMatch )
431    o pkg/seaice:
432      - add timescale for melting due to warm mixed layer as a means of
433        setting SEAICE_availHeatFrac more conveniently
434      - add a CPP-flag/runtime parameter check for flooding algorithm
435      - reformulated availHeat in seaice_growth.F to be independent of AREA
436    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
437      unit changes
438    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
439    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
440      SX vector computer.
441    o pkg/seaice:
442      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
443        seaice forcing fields can now be read only through pkg/exf
444      - removed some unused halos
445    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
446    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
447      or U/VICE from U/VWIND before computing U/VSTRESS
448    
449    checkpoint59k
450    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
451      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
452    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
453      all experiments pass when compile with un-initialised var. checking option.
454    o added pkg/salt_plume
455    o script to test restart (for now, in MITgcm_contrib/jmc_script)
456    o pkg/seaice: new read/write pickup version.
457      read meta file and write only fields which are needed to restart.
458      ( same logic as main pickup file ; also using pickupStrictlyMatch )
459    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
460    o lab_sea.hb87: modify the domain & update output.hb87.txt :
461      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
462      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
463      process. Fixed here by closing the domain at the Northern boundary.
464    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
465    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
466      a set of consecutive levels in/from a 3-D array.
467    o pkg/ptracers:
468      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
469      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
470    
471    checkpoint59j
472    o in pkgs: dic, obcs, offline, rbcs:
473      standard way to compute coeff. for time interpolation between 2 time reccords
474      which retains full precision (& make results less dependent on compiler).
475      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
476    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
477      packages instead of reading ice cover and wind speed separately
478    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
479     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
480      to allow to compile customized code before the update)
481    o cleaning-up:
482      - fix CPP instruction syntax in pkg/obcs
483      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
484        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
485      - fix some threads issue in IO parts.
486    o pkg/dic:
487      - add tons of "_d 0" (--> much better testreports !)
488       and then update outputs of tutorial_global_oce_biogeo
489    o pkg/mom_fluxform:
490      add a special version of momentum advection intended to conserve momentum
491      next to a bathymetry step or a coastline edge. (default = off = #undef)
492    o new read/write pickup version:
493      - for now, only implemented for main (mdsio) pickup file.
494      - write out only what is needed to restart; merge pickup_nh , pickup_ph
495        and main pickup together.
496      - read meta file; read only what is needed to restart; stop if a field
497        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
498        if it make sense (even if the restart is not perfect).
499      - if no meta file, assume that pickup to read corresponds exactly to
500        a pickup that would currently be written.
501      - read pickup written in the old format (until checkpoint59i) if it
502        recognizes an old meta file (no field-list).
503      - add a meta file in exp. which starts from a pickup: 2 cases:
504        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
505         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
506        b) a meta file describing the content of the associated pickup file
507         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
508    o pkg/mdsio & pkg/rw:
509      - new routine to read a meta file ; new set of routine to read
510        Multiple-fields file (with meta file).
511    o added open boundary conditions capability for seaice
512        HSNOW, HSALT, UICE, and VICE
513    
514    checkpoint59i
515    o adjoint:
516      * fix multiDimAdvection adjoint
517        (partial recomputation problem by TAF for fVerT(:,:,kDown)
518        and comlev1 size definition (maxpass vs. max. number of tracers)
519      * verification/global_ocean.90x45x15 adjoint now tests
520        NLFS and multiDimAdvection using DST3 (=30)
521      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
522    o pkg/kpp: add "_d 0" to real constant (if missing);
523      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
524      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
525    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
526      for internal parameters related to restart process (formerly from PARAMS.h)
527      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
528    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
529      as argument. (only atm2d & obcs write_pickup have not yet been updated)
530    o pkg/monitor:
531      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
532      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
533      - account for deep Atmosphere factor and density factor (anelastic)
534    o added open boundary conditions capability for seaice HEFF and AREA
535    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
536      thermodynamics
537      - requires a little reorganization, which affects the testreport results
538        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
539        so that now the conservative form is tested
540      - add a few comments
541    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
542    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
543    o add new diagnostics to seaice: advective, diffusive fluxes (only for
544      multidim-advection, for scheme 2 they are not filled) and transports,
545      thermodynamic growth rates
546    o change units of EmPmR (inside the code, + within coupling interface)
547      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
548      Affects results @ truncation level (cg2d match) and update output of
549       experiments: lab_sea(6), global_ocean.90x40x15(10),
550      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
551      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
552      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
553      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
554    
555    checkpoint59h
556    o pkg/exf:
557      - improve vectorization by moving if-statement out of loops in
558        exf_mapfields, exf_radiation
559      - exf_bulkformulae.F: introduce 2D fields and vectorize code
560    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
561    o testreport:
562      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
563        monitor & update offline_exf_seaice exp. output.
564      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
565    o pkg/seaice:
566      - bug fix in the evp solver: boundary conditions were affected be
567        masking of zMax/zMin (changes results)
568      - minor bug fix in boundary conditions in seaice_calc_strainrates
569        (changes results for no_slip)
570      - seaice_lsr.F: make interpolation of eta dependent on boundaries
571      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
572      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
573        stress formulation and no-slip boundary conditions
574    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
575      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
576    o pkg/seaice: a first HSALT time stepping equation has been checked in
577    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
578      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
579      without requiring DO-IF statements
580    o pkg/thsice:
581      use continuous power-law function for partition of energy between lateral
582      melting/freezing and thinning/thickening ; old code using step function
583      still available with #undef THSICE_FRACEN_POWERLAW
584      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
585    o testreport: change AD testing : check against results/output_adm.txt
586      using same scripts as for forward test.
587    
588    checkpoint59g
589    o adjoint testing: in preparation for changing testreport:
590      - output format: cost and grad written on separated lines
591      - ad output results in directory "results" (instead of "results_ad")
592    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
593    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
594    o pkg/ecco: allow user defined cost function contributions
595    o testreport:
596      Allow to choose (per experiment) the list of tested output variables
597       and the main variable (used to issue a pass/FAIL ) ;
598      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
599      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
600      Also modify printing of summary:
601       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
602       b) echo the list of tested variables in the individual summary.txt of
603          each experiment.
604    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
605      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
606      (but still depend on the tile decompostion of the domain).
607    o pkg/seaice: change a discretization detail to make the B-grid code
608      "more symmetric". This change is likely to remove all "ridges/leads" that
609      where quasi-aligned with the grid in B-grid solutions. It may also be
610      the solution to the stress coupling issues with the B-grid.
611    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
612      remove .cvsignore from input dir. (since testreport no longer run here).
613    o pkg/thsice:
614     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
615     - fix reshaping of sea-ice just after advection:
616       melt all the ice only if ice-volume is too small.
617     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
618       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
619     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
620    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
621      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
622    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
623      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
624      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
625      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
626      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
627      -> update output.txt
628    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
629     this affects truncation error: -> update output.txt of exp:
630      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
631      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
632    
633    checkpoint59f
634    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
635    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
636      a bounded range (in forward mode)
637    o pkg/ecco, ctrl, autodiff and mom_common:
638     internal parameter controls, completements of implementations
639    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
640    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
641      (not seem any difference in testing results).
642    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
643       at face corners.
644    o pkg/generic_advdiff:
645     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
646      loop range indices for computing vertical advection tendency
647      and do the calculation in the interior only (no overlap) ;
648      for now, only implemented for SOM advection (to save CPU time).
649     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
650    o exch2 adjoint
651      First set of changes:
652      - add exch2 hand-written adjoint templates
653      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
654        This will require cleanup in pkg/autodiff/*.F
655        (changed routines currently kept separate in verif. code/)
656      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
657        that used to hide exch2 or cubed-sphere specific code
658        (commented via 'cph-exch2')
659    o pkg/seaice
660      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
661    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
662       output of global_ocean.cs32x15.thsice .
663    
664    checkpoint59e
665    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
666      for B-grid vector (not yet tested) and C-grid vector (<- only used
667      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
668    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
669      (#ifdef ALLOW_SALT_PLUME)
670    o gather_2d/scatter_2d: removed halo regions
671    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
672      scheme and the corresponding test case (under front_relax dir). For now,
673      only available with Skew-flux form and not yet tested in realistic set-up.
674      adjoint: store directives updated, but gradient checks deteriorated,
675      so maybe GM/Redi adjoint is now broken.
676    o seaice adjoint
677      * add AREA, HEFF, HSNOW as control variable
678        (should not change lab_sea results)
679      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
680    o pkg/seaice:
681      * added computation of saltFlux in seaice_growth;
682        For time being, sea ice salinity is assumed constant
683        contribution of snow flooding to freshening of sea ice is neglected.
684        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
685        defaults to 0.0 in order to maintain backward compatibility.
686        Typical values for SEAICE_salinity are 4 to 10 g/kg.
687      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
688      * added SEAICE_availHeatFrac, which specifies fraction of surface level
689        heat content used to melt or grow ice
690      * commented out cap of HICE: it helps keep ice thinner
691      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
692      * applied OBCS T/S mask to HEFFM sea ice mask
693    
694    checkpoint59d
695    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
696     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
697     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
698    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
699     and change default value of parameter "GM_Small_Number";
700     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
701       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
702       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
703    o pkg/ecco: cost function when applying pkg/smooth to controls
704    o pkg/ctrl: add forcingPrecond run time parameter
705    o pkg/seaice:
706     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
707     - fix bug in metric terms of u-equation in LSR solver (implicit part),
708       changes verification/lab_sea
709     - rearrange implicit part of u-equation in LSR solver to make it easier to
710       read, understand, and debug. This causes changes at the truncation level.
711     - fix (serious) bug in the boundary conditions (sign error in the implicit
712       part) of the LSR solver. Changes all LSR results.
713     - fixed problem with HSNOW initialization to avoid thick snow when AREA
714       is initilized with small values - does not change lab_sea results.
715     - added HsnowFile initialization capability
716    o pkg/smooth: addition to model/src and pkg/ctrl so allow
717     initialization of pkg/smooth and application to control vector
718    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
719    o dependencies: pkg/profiles requires pkg/cal
720    o pkg/profiles:
721     - added option ALLOW_PROFILES_GENERICGRID
722         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
723         that interpolation information (grid points and coefficients) is provided
724         within the netcdf input files.
725         -> sample matlab scripts can be found in MITgcm_contrib/gael
726         that allow you to prepare netcdf input files.
727     - also modified: cleaner include statements, cleaner error print statements,
728       cleaner stops when error, and more tests of the netcdf input files consistency.
729    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
730    o pkg/seaice:
731     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
732       requires a new routine: seaice_diagnostics_fill.F
733     - make sure that seaice does not move if not forced (pressure replacement
734       method, Hibler and Ip, 1995), changes results
735     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
736     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
737       It is turned off by default (=-1.), because it changes the results.
738     - make it possible to read AREA from a file, too.
739    
740    checkpoint59c
741    o add S/R and diagnostics for oceanic mixed-layer depth
742    o move GMRedi call after all vertical mixing schemes (including KPP)
743    o pkg/thsice:
744     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
745      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
746    o pkg/obcs:
747     - bug fix for balance code
748    o pkg/seaice:
749      - allow values of SEAICE_elasticParm > 1
750      - add new parameter SEAICE_evpTauRelax as an alternative
751        to SEAICE_elasticParm
752      - make lsr boundary conditions free slip (by default), changes result
753      - add code for no slip boundary conditions for lsr
754      - set minimum of zeta to zero (and not 4e8) (changes results)
755      - add a cap on AREA after advecting AREA if seaice_growth is not called
756    o change calculation of Visbeck K:
757      - no longer depend on tapering scheme; instead, compute slope (limited
758        by GM_maxSlope). this is equivalent to what was comuted before with
759        clipping or linear tappering.
760      - fix vertical averaging (wrong by 1/2 level)
761      - leave the old version (but will not be maintained) within
762        #ifdef OLD_VISBECK_CALC / #endif
763      - update output of exp. ideal_2D_oce
764    o change error catch in calc_r_star to improve vectorization
765    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
766      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
767    o adjoint:
768      Re-organized adjoint checkpointing according to Matt Mazloff
769      (but with modifs/completions/cleanups)
770      Storing is now bundled into large arrays to optimized I/O
771      (and second step in cleanup of the_main_loop)
772    
773    checkpoint59b
774    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
775      - export/import (between ocean & coupler) fields needed for ocean DIC.
776    o pkg/seaice:
777      - get rid of three more exchanges seaice_calc_viscosities (required
778        different loop boundaries in seaice_lsr and seaice_ocean_stress)
779      - bug fix in seaice_ocean_stress (update of lab_sea required)
780      - reduce loop boundaries to necessary minimum also in seaice_evp
781      - go back to the old way of computing deltaC/Z as the adjoint likes that
782        better
783    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
784      passive tracer to an Age Tracer) + update output.txt
785    o pkg/exf:
786      - implement A-grid / C-grid selection for wind-stress input files.
787      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
788      for now, in exf_bulk_largeyeager04.F only :
789      - change implementation for case where windspeed + 2. components wind-stress
790        are read-in. AND use rhoConstFresh to convert evap.
791    o pkg/seaice:
792      - use correct EXCH_UV for wind-forcing (on A-grid).
793      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
794        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
795    o pkg/exf:
796      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
797      EXF_INTERPOLATION:
798      - merge global_with_exf/code version of exf_interp_read.F
799        to the main code ;
800      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
801        reading the file ; Important: This options needs to be defined to recover
802        previous code.
803        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
804      - no longer loose real*8 precision along the way when using exf_iprec=64.
805    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
806      - change discretisation of evp-solver in order to avoid another exchange
807        (changes lab_sea) and clean up a little
808      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
809        help the adjoint (this also changes the results slightly)
810      - add a few "_d 0" where they had been missing in seaice_evp.F
811      - cleaning up: remove unused seaice_calc_rhs.F
812    o pkg/exf: some cleaning-up:
813      - change various "constants" into runtime parameters
814      - cleaned-up Large&Yeager04 routine which should eventually
815        replace exf_bulkformulae.F (changed names of S/R and CPP)
816        and merged various ALLOW_ATM_WIND options
817     only used with thsice pkg (in thsice_get_exf.F):
818      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
819        which are used when useStabilityFct_overIce=TRUE (= the default)
820      - change default values of ice & snow emissivity and scale downward LW
821        by ice & snow emissivity.
822    o pkg/thsice:
823     fix few little problems, in thsice_calc_thickn.F:
824      - growth vertically (and not laterally) if iceFrac == iceMaskMax
825      - melt only laterally if hIce < hThinIce (as the comments say)
826      and in thsice_extend.F:
827      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
828      - start to form ice as soon as the minimum ice-volume is reachable.
829     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
830      and cpl_aim+ocn
831    o pkg/kpp
832     - move computation of surface related input fields to KPP into a new
833       subroutine kpp_forcing_surf.F
834     - remove wrong (within bi,bj loops) EXCH calls.
835     - little cleaning (add argument myThid in last position, cvs header ...)
836     - for now, fix conservation problem by exchanging KPPviscAz (may not
837       be the best fix)
838    o pkg/seaice
839     - check for inconsistent evp parameter/cpp-flag combination
840     - remove leftover errIO flat for obsolete name list error handling
841    o OpenAD
842     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
843    
844    checkpoint59a
845    o pkg/seaice: some parameter clarifications and a little bit of clean up
846    o pkg/thsice: rename run-time parameters:
847       himin       -> hIceMin
848       himin0      -> hThinIce
849       hihig       -> hThickIce
850       i0          -> i0swFrac
851       transCoef   -> bMeltCoef
852       frac_energy -> fracMelting
853      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
854       with default values (for now) that do not change the results.
855      remove old version of thsice vars advection in pkg/seaice.
856    o in FFIELDS.h:
857      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
858      - make pLoad & sIceLoad always available (but still only used if
859         ATMOSPHERIC_LOADING is #define).
860    o pkg/kpp: replaced _KPP_RL with _RL
861    o bug fixes for vertical diffusivity computations when both KPP and
862        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
863        are no longer updating the vertical diffusivity array
864        (passed as argument) but are (re-) setting those arrays.
865    o pkg/seaice: fix bug in evp solver, while doing that
866      - change (improve?) discretization of stress computations for both
867        cgrid-lsr and evp solver
868      - add a new routine to compute strain rates
869      - the above changes lab_sea results
870      - add no slip conditions for evp solver (off by default), lsr-version
871        may follow
872      - fix exchange for shear at Z-points (does not change lab_sea)
873      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
874        (to force the user to pick a time step since there is not "safe" way
875        of choosing it)
876      - add principal stress diagnostics
877      - rearrange fields for evp a little to avoid having to call a: too many
878        exchanges and b: exchanges for stress trensor components which we do
879        not have.
880      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
881        of evp, complete rewrite for lsr case (latter is does not yet work
882        in all cases)
883    o pkg/kpp: add code to have mixing in shelf ice caverns
884      - add myThid to all kpp routines (long overdue)
885    
886    checkpoint59
887    o pkg/exf:
888      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
889        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
890      - move exf header files from lower_case.h to UPPER_CASE.h ;
891        add missing cvs Header & Name
892      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
893      - add namelist param. selectStressGridPosition, exf_monFreq
894      - retire many _CLIM routines, and remove data.exf_clim
895        + params moved to data.exf
896        + climsst, climsss now handled by exf_set_gen, i.e.
897          climss?period=0 refers to constant field,
898          climss?period=-12 to monthly forcing
899      - split up namelists in data.exf
900    o pkg/seaice:
901      - remove seaice_exch and seaice_exch_uv
902      - remove superfluous exchange of theta
903      - add myThid to seaice_budget_ocean/ice
904      - add new interface for atmospheric wind forcing (C-grid only)
905        + new routine
906        + two new field (taux, tauy for stress over ice)
907        + removed one global field (DAIRN) for C-grid case only
908    o pkg/thsise
909      - 2nd set of modifs for thsice adjoint in conjunction with exf
910    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
911    
912    checkpoint58y_post
913    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
914      vertical diffusivity, similar to that in MOM4; turned on using
915      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
916      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
917    o Added capability for 3D specification of background vertical diffusion
918      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
919      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
920      "data" file that contains the 3D vertical diffusivity coefficients.
921    o ice dynamics (pkg/seaice) with thsice thermodynamics:
922      - add code within pkg thsice to advect & diffuse sea-ice fields
923      similar to (and will replace) what has been added in  seaice_advdiff.F,
924      but: - conserving Mass, Heat & Salt.
925           - better when using non-linear advection scheme (not yet fully tested)
926           - can also be used in atmospheric set-up (for now, only the diffusion).
927    
928    checkpoint58x_post
929    o IO option for global-file compact format:
930      - add options when generating topology (utils/exch2/matlab-topology-generator)
931      - add I/O capability (pkg/mdsio).
932      - adapt utils/matlab/rdmds.m to read this format.
933      for now long-line format not yet supported by pkg/mdsio (& exch2).
934    o shelfice: add a few diagnostics
935    
936    checkpoint58w_post
937    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
938      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
939      (and replace horiVertRatio in NH code).
940      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
941                         and tutorial_plume_on_slope (sensitive to truncation)
942    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
943      directly to drive seaice model (C-grid only)
944    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
945     - reintroduce computation of wind from stress,
946     - compute tau (in exf_bulkformulae.F) from windstress averaged to
947       mass points to avoid tau = 0
948     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
949    o rdmnc.m: make it work with "global" files created with gluemnc
950    o rdmnc.m : some improvements in dealing with singleton dimension
951      (tested on all testreport mnc output files).
952    o genmake2: disable pkg/profiles if netcdf test fails.
953    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
954    o move call to cal_readparms up to make calendar parameters/variable available
955      to all packages
956    
957    checkpoint58v_post
958    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
959      useDynP_inEos_Zc tested.
960    o pkg/exf: changes to properly interpolate/mask/scale initial fields
961    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
962      and portions thereof.  See read_cs.txt for description and examples.
963    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
964      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
965      following the great-circle arc between those 2 points.
966    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
967      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
968    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
969     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
970     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
971     - still needs work (not working with some options ; efficiency to improve)
972       and serious testing.
973     - use this scheme for temperature & salinity in 2 advection test exp.:
974       advect_xy & advect_xz, respectively.
975    
976    checkpoint58u_post
977    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
978    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
979    o testreport: add option "-skipdir" to skip some test.
980    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
981      momentum calculation.
982    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
983    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
984      remove checkpoint.F and the_correction_step.F (no longer used);
985      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
986    o add option (linFSConserveTr) to correct for tracer source/sink due to
987      Linear Free surface
988    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
989    o pkg/thsice: fix reading mnc-pickups
990    
991    checkpoint58t_post
992    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
993    o pkg/mdsio:
994     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
995       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
996       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
997     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
998     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
999       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1000     - new S/R (to replace MDSWRITEMETA), which allows to write more
1001       informations (variable names, time ...) to meta files.
1002     - modify rdmds.m to give back the meta file content.
1003    o pkg/diagnostics: change vertical interpolation to be safer, and more
1004       flexible (define p-levels to interpolate to in data.diagnostics);
1005      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1006       diagnostic pointer.
1007    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1008    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1009    o fix multi-category seaice:
1010     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1011       SEAICE_MULTICATEGORY
1012     - fix short wave heat flux
1013    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1014       and allow to use EVP solver. Change forward lab_sea: test both EVP
1015       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1016    o Initial check-in of lab_sea adjoint
1017      (very similar to natl_box_adjoint/code_seaice)
1018      * used C-grid and EVP solver
1019      * used KPP, GM/Redi
1020      * uses inAdExact=.TRUE.
1021      * gradient checks fail for both ADM and TLM
1022        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1023        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1024        issue is related to forward mismatch between g77 an ifort
1025    o pkg/seaice: overhaul of thermodynamics
1026     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1027     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1028     - move a few global fields out of SEAICE.h into seaice_growth.F and
1029       make them 2D (FICE/QNETO/ ...)
1030     - remove FO (it is the same as QNETO)
1031     - introduce a few local fields to avoid modifying external fields such
1032       as atemp, etc.
1033    
1034    checkpoint58s_post
1035    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1036      changed exf_set_gen.F so that
1037        genperiod=0 means input file is one time-constant field and
1038        genperiod=-12 means input file contains 12 monthly means
1039    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1040      this affects truncation error ; generate new output file for exp. which
1041      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1042        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1043        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1044        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1045        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1046        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1047    o start implementation of deep-atmosphere and anelastic formulation
1048    o verification: remove 2nd copy of input files and use script "prepare_run"
1049      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1050    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1051    o profiles: fix for multithreaded case
1052    
1053    o diagnostics: rename few diags:
1054      s/'PRESSURE'/'RCENTER '/g
1055      s/'TICE    '/'oceFreez'/g
1056      s/'TAUX    '/'oceTAUX '/g
1057      s/'TAUY    '/'oceTAUY '/g
1058      s/'SWFLUX  '/'oceQsw  '/g
1059      s/DIFx/DFxE/g
1060      s/DIFy/DFyE/g
1061      and add few ocean-forcing diagnostics:
1062      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1063    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1064      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1065      as actual snow thickness.  It now refers everywhere to effective snow
1066      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1067    
1068    checkpoint58r_post
1069    o modifications to pkg/seaice/growth.F, which change results of
1070      lab_sea experiment: fixes pertain to melting snow over open water, to
1071      masking EVAP under sea ice, and to using the correct AREA variable for
1072      computations of EVAP, PRECIP, HSNOW, and GHEFF
1073    o add ability to read bathy, salt, and theta using MNC (off by def)
1074    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1075      both are turned off by default and do no change any results
1076    o seaice advection with pkg/thsice: a step toward the use of non-linear
1077      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1078    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1079      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1080      in natl_box (affects results @ truncation level: update output.txt)
1081    o multi-threading and IO:
1082      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1083      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1084        (needed to work with SingleCpuIO): tested in all verif. exp.
1085    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1086      affects the results (but none of the verification test uses this scheme).
1087    o Adding some pkg/diagnostics capability to pkg/seaice
1088      (will certainly be subject to changes)
1089    o ctrl: adding new control variables:
1090      lwflux, lwdown, evap, snowprecip, apressure, runoff
1091    
1092    checkpoint58q_post
1093    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1094      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1095      high_res_cube configuration by 4% on Columbia.
1096    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1097      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1098      dynamical allocation (seems to work in multi-threaded).
1099    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1100      single CPU io) so that TAF does not have to see EESUPPORT.h
1101    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1102    
1103    checkpoint58p_post
1104    o obcs: stop if obcs is used with useCDscheme = .true.
1105    o shelfice:
1106     - fix a sign error so that no slip at shelfice interface works
1107     - remove stop for combination non-hydrostatic code and shelfice. That does
1108       not mean, that the results are correct, but at least they are numerically
1109       stable
1110    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1111    o added adjoint exch routined for all exch*3d* routines
1112      and updated flow directives
1113    
1114    checkpoint58o_post
1115    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1116      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1117    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1118      and clean-up reading/writing of pickup files.
1119    o fix local version of read/write pickup (NH part) in rotating_tank/code
1120    o simplify EXCH interface:
1121     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1122     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1123    o added the regrid package
1124    o shelfice:
1125     - add a simple boundary layer scheme to reduce noise
1126     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1127    
1128    checkpoint58n_post
1129    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1130       local variable (not in common block).
1131    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1132      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1133      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1134        to work with SingleCpuIO.
1135    o add "_d 0" to real constant of pkg/cfc subroutines ;
1136       update exp. cfc_exemple & tutorial_cfc_offline output files.
1137    o multi-threading and IO:
1138      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1139        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1140      - barrier before and after reading.
1141      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1142      - avoid using MDS_WRITELOCAL for LAND pkg output.
1143      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1144        common-block variables ; Allows multi-threading with master-thread IO.
1145    o change default MAX_NO_THREADS from 32 to 4 ;
1146      and stop cleanly when MAX_NO_THREADS is too small.
1147    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1148    
1149    checkpoint58m_post
1150    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1151       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1152    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1153       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1154       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1155    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1156        add MITgcm_tutorials (= code + all the tutorials)
1157    o ecco, option to compute cost for total ssh (mean+anom)
1158    o consistent with addition of ptracer and ssh in pkg/profiles
1159    o profiles: adding ptracer and ssh
1160    o testreport: change multi-test output-file name
1161      (from output.txt.{name} to output.{name}.txt)
1162    o profiles: now ok for mutli-tiles case
1163    o seaice: add 4 parameters for different advection schemes for area,
1164      (effective) seaice thickness, enthalphy, and snow height. Their default
1165      is the standard parameter SEAICEadvScheme
1166    o calc_gw:
1167     - add cosFacU in zonal viscous flux (harmonic.visc.).
1168     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1169       of tutorial_plume_on_slope.
1170    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1171    o calc_gw: true flux-form, account for horizontal grid spacing.
1172      update rotating_tank results, but not plume_on_slope (affected at
1173      truncation level, 11 digits).
1174    
1175    checkpoint58l_post
1176    o calc_gw:
1177     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1178     - remove side-drag for now (need to fix it); update plume_on_slope results.
1179     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1180    o commit code to make SST/SSS weights spatially variable
1181      (based on either variable in-situ or variable initial T/S weights)
1182    o pkg/ecco:
1183      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1184        now based on horizontally varying weights wthetaLev, wsaltLev
1185      * cost_averagesflags now returns year indices in addition to day, month
1186      * sflux balance is performed on annual basis
1187        (sflxumm, sfluxmm2, bal_sfluxmm)
1188      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1189        including separate counting and multipliers
1190    o pkg/rbcs
1191      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1192    
1193    checkpoint58k_post
1194    o testreport:
1195     - always build in dir. "build" (if not there, mkdir build instead of building
1196       & running in input)
1197     - run in dir run (if it exists), in build otherwise.
1198     - call prepare_run (if input/prepare_run exists)
1199     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1200    o pkg/exf modifications to interpolation and rotation routines for more
1201       reasonable treatment of North Pole singularity: for tracers North Pole
1202       value is set to northernmost zonal-mean value, for zonal velocity it is
1203       set to zero, and for meridional velocity it is set to northernmost value.
1204    o pkg/exf/exf_check_range.F
1205     - add tile index to diagnostics and move stop statement to the very
1206       end of the routine.
1207    o pkg/diagnostics: (diagnostics_main_init.F)
1208      define title of isomorphic variables according to the current config.
1209    o pkg/thsice with pkg/seaice dynamics:
1210    - fix domain of computation (interior only, required for exf) and do exchanges
1211    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1212    o towards a standard way of dealing with multi-threading in MONITOR
1213      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1214    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1215       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1216    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1217    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1218    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1219       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1220    o tracer advection:
1221     - clean-up and simplify calc_common_factors.F
1222     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1223       advection subroutine (but still not used within DST advection S/R)
1224    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1225    
1226    checkpoint58j_post
1227    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1228      from file (collects calls previously in FORWARD_STEP)
1229    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1230    o adjoint store dir. adjusted accordingly
1231    o genmake2
1232      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1233    
1234    checkpoint58i_post
1235    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1236      on wind stress (SEAICEstressFactor defaults to 1.)
1237    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1238      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1239    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1240      on CS-grid: no longer loosing mass.
1241    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1242    o pkg/ggl90: fix sloppy output and fix a bug
1243    o pkg/seaice: added SEAICEuseEVPpickup parameter
1244      - Set to false in order to start EVP solver with
1245        non-EVP pickup files when using SEAICEuseEVP
1246      - fix sign error in diffusion in seaice_calc_rhs
1247    
1248    checkpoint58h_post
1249    * Modifications for bottom topography control
1250      o replace hFacC by _hFacC at various places
1251      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1252      o add non-self-adjoint cg2d_nsa
1253      o update autodiff support routines
1254      o re-initialise hfac after ctrl_depth_ini
1255      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1256    * Adding verification for 5x5 box (4-layer) bottom topography control
1257    
1258    checkpoint58g_post
1259    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1260       used for mean seasonal cycle, mean diurnal cycle); add an example
1261       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1262    o pkg/ggl90:
1263      - add parameter (minimum surface kinetic energy)
1264      - fix bug (avoiding division by zero)
1265    o couple pkg/thsice to pkg/seaice:
1266      - modify advection in seaice to accomodate new scalar fields to be advected
1267      - only muliDimAdection scheme work with seaice/thsice
1268      - mapping of thsice-variables to seaice-variables, back and forth
1269      - does not break the verification experiments, but does not give the
1270        desired results either
1271    o pkg/seaice
1272      - make (default) second order advection a bit less confusing?
1273    
1274    checkpoint58f_post
1275    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1276      to pkg/seaice):
1277      - new routines thsice_map_exf and thsice_get_exf provide the interface
1278      - add an additional formal parameter to thsice_solve4temp
1279    o pkg/exf:
1280      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1281      - correct Stefan-Boltzmann constant
1282      - new parameter for longwave surface emittance
1283      - separate some stuff from exf_bulkformulae into new routines  
1284        exf_radiation, exf_wind
1285      - add new parameters and constants: longwave emissivity for ocean, ice
1286        and snow, evaporation parameters over ice
1287      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1288        either wind from stress or stress from wind
1289    o pkg/thSIce:
1290    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1291    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1292       and THSICE_CALC_THICKN
1293    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1294    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1295      to make debugging easier.
1296    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1297    o pkg/bulk_force:
1298      - clean-up comments and parameters ;
1299      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1300    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1301      generate new output for test-experiment: aim.5l_cs.thSI
1302    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1303      testreport accordingly
1304    
1305    checkpoint58e_post
1306    o SEAICE_CGRID adjoint done
1307    o R_STAR adjoint implemented.
1308      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1309      * need to sort out init. of h0facc, etc.
1310    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1311      to be able to use it in pure forward.
1312    
1313    checkpoint58d_post
1314    o upgrade simple test-experiment to tutorial example:
1315     step.1: duplicate the experiment and (step.2) will remove the old copy.
1316      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1317      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1318      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1319      tutorial_global_oce_biogeo    <- copy of dic_example
1320      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1321      tutorial_plume_on_slope       <- copy of plume_on_slope
1322      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1323      tutorial_global_oce_optim     <- empty for now (David ?)
1324      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1325     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1326    o correct a sign problem in cost_scat.F
1327    o obcs and ptracers: fix boundary conditions for advections schemes
1328      with larger stencil
1329    o thsice adjoint: start
1330    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1331      completeness
1332    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1333      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1334    o ptracers adjoint:
1335      * avoid extensive recomputatations
1336      * fix missing re-init. of gptr (missed by TAF)
1337    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1338      me to turn off the excessive output to STDOUT that this package produces
1339    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1340      and add those terms in Vector-Invariant formulation.
1341    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1342      if the control period (xx_hfluxperiod etc) is 0
1343    o in profiles pkg, clean routines and fix details
1344    o in ecco pkg, reading ssh data:
1345      fix problem in case the model does not start at iter0=0
1346    o fix mnc-pickup/restart for ptracers
1347    o new package prifiles:
1348      code to compute profile-based cost by Gael Forget
1349      (modifs in ecco, ctrl, autodiff)
1350    o Benign bug fix in initialization (spotted by M. Mazloff) of
1351      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1352    
1353    checkpoint58c_post
1354    o adjoint: finish NLFS adjoint and provide reference output in
1355      verification/global_ocean.90x40x15/results_ad_nlfs
1356    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1357      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1358      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1359      with SEAICE_CGRID defined.
1360    o move calendarDumps from "data" to "data.cal" and clean-up the code
1361      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1362    o add useEXF & useCAL flags (for now, set in hard-coded way)
1363    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1364      (were missing in NH mode, and wrong in quasihydrostatic mode).
1365      waiting for Chris updated version of calc_gw to add those CALLs.
1366    o fix bug in quasihydrostatic S/R ;
1367      add a test for this option: global_ocean.90x40x15.qshyd
1368    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1369      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1370    o add on/off flag useOffLine for package OFFLINE
1371    o seaice:
1372      - modify advection so that it works also on the C-grid
1373      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1374        problem in multi-tile runs with C-grid
1375      - add flags for clipping ice velocities and/or masking solver forcing
1376      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1377        C-grid solver
1378      - added a few comments to seaice_diffusion.F
1379      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1380        are now exclusive)
1381      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1382        required re-ordering the code a little:
1383       + make DAIRN global variable (defined in SEAICE)
1384       + move computation of the viscosities eta and zeta into a new separate
1385         routine (because I need to recompute them in seaice_ocean_stress.F)
1386    
1387    checkpoint58b_post
1388    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1389      update output.txt of exp. aim.5l_cs.thSI
1390    o various mnc cleanups and improvements:
1391      + shrink lookup tables by factor of ~4
1392      + better error reporting when running out of lookup space
1393      + able to handle longer path/file names (up to 500 chars)
1394    o adjoint:
1395      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1396      - TBD: "hidden" mom_vecinv recomp. in dynamics
1397    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1398     (allow to differentiate between forcing components using new integer flags:
1399      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1400     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1401    o ecco
1402      - enable trend removal from SSH anomaly obs.
1403    o adjoint
1404      - a fix for PmEpR when #undef EXACT_CONSERV
1405      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1406      - try to fix "hidden" recomp. in forward_step for NLFS
1407        (NLFS seems broken sometimes after I checked it in)
1408    o seaice:
1409     - add c-grid version of the dynamic solver:
1410       + three new routines that are the c-grid substitute lsr, dynsolver
1411         and ostres
1412       + put a few fields that were local to dynsolver into global common
1413         blocks, so that I can move the computation of stresses etc into
1414         seaice_lsr (saves coding but may break the adjoint).
1415     - replace more hardwired parameters by runtime parameters
1416     - add ice masks that mask the rhs of the implicit solvers where there
1417       is no ice (commented out in seaice_dynsolver, because i am not sure
1418       if this works properly), eventually this should replace the clipping
1419       of ice velocities in seaice_dynsolver to +/-40cm/s.
1420    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1421      include it only where its needed
1422    o move balancing of fluxes before the call of external_forcing_surf
1423    o seaice:
1424      - correct units of turning angles (now they are really in degrees)
1425      - move computation of GWATX/Y out of main routine into dynsolver
1426      - initialize GWATX/Y in seaice_init
1427    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1428      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1429    o seaice: add runtime flags for turning angles (default to zero)
1430    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1431      and trend from exf forcing and ctrl control adjustments
1432    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1433      (since checkpoint57x_post)
1434    o change the default rotation period to 86164.s = the Earth rotation
1435    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1436      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1437    o seaice advection: add code for choosing between the default (2nd order
1438      central differences) and multiDim advection schemes provided by
1439      pkg/generic_advdiff
1440    o seaice:
1441      - removed all references to SEAICE_GRID.h fields from
1442        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1443        (cubed-sphere configuration will change a little)
1444      - grid computations in seaice_init are obsolete now.
1445      - cleaned up code a little so that is easier to read (hopefully).
1446      - added new (better?) discretizations of default advection and diffusion
1447        (turn on with SEAICEuseFluxForm)
1448      - replace 1 in 3d global fields by kSurface in growth.F
1449      
1450    checkpoint58a_post
1451    o seaice:
1452      - bug fix in advect.F
1453    o shelfice:
1454      - separate shelfice load anomaly from pload (breaks with time
1455        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1456        Its default is 0., but it may be computed more cleverly from (unknown)
1457        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1458        done offline. A good approximation of the pressure load anomaly is
1459        necessary to avoid large initial adjustment processes underneath
1460        deep-reaching shelfice.
1461      - small fix in ISOMIP shelfice_thermodynamics
1462      - add more sophisticated thermodynamics of Hellmer (1989), this is
1463        now the default
1464      - give a few constants more intuitive names
1465    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1466      if bulk formulae are used in long integration (especially EmPmR). Turn
1467      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1468      if balancePrintMean, the imbalance that is substracted is printed to
1469      STDOUT.
1470    o fix bug (typo) in obcs_apply_eta.F
1471    o add a new package shelfice which enables us to model the circulation
1472      underneath shelf-ice with draughts of hundreds of meters.
1473     - works
1474     - to do: + include improved thermodynamics
1475              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1476                instead of new field kTopC
1477              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1478                instead of new field R_shelfIce and new code in ini_depth.F
1479                and ini_mask_etc.F?
1480              + adjust vertical mixing schemes?
1481    o seaice pkg:
1482     - add a cpp-flag to include a simple formula for a salinity dependent
1483       freezing point of sea water at the surface
1484     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1485       meridional stresses are now different (and hopefully correct)
1486    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1487       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1488       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1489    o pkg/diagnostics: add options and parameters for regional-statistics
1490       diagnostics ; define regions by reading a region-mask from a file
1491       (might add other options later)
1492    o pkg/bulk_force:
1493     - add option and parameters to use AIM surface-flux formulae.
1494     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1495       others forcing fields (defined in PARM05, parameter file "data") are loaded
1496       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1497     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1498     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1499     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1500       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1501     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1502    
1503    checkpoint58
1504    o add "--embed-source" option to genmake2 which, when the supporting
1505      tools can be compiled (as determined by genmake2) will turn on the
1506      embed_files package which then embeds the entire MITgcm source code
1507      (*.[fFhc] + Makefile) used for the build within the executable
1508      - requested by CNH but off by default
1509      - adds a paltry <9MB to the mitgcmuv executable in most cases
1510      - only writes the output when useEMBEDSRC in eedata is true
1511    o clean up 3-dim. relaxation codes:
1512      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1513      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1514      * Thanks to Tom Haine for testing!
1515    
1516    checkpoint57z_post
1517    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1518      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1519    o fix the pickup behavior for obcs in combination with ptracers
1520    o fix a bug in ptracers_external_fields_load
1521    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1522      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1523    o transfered surface NH pressure to eta field (if exactConserv).
1524    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1525         and update lab_sea output.txt file.
1526    o completing 3-dim. relaxation code: additional term
1527         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1528      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1529      * At compile time, in "EXF_OPTIONS.h" set
1530          #define  ALLOW_CLIMTEMP_RELAXATION
1531          #define  ALLOW_CLIMSALT_RELAXATION
1532      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1533          tauThetaClimRelax3Dim = 15552000.0,
1534          tauSaltClimRelax3Dim  = 15552000.0,
1535      * 3 cases:
1536          1) Use a constant-in-time 3-dim. field
1537          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1538          3) Real-time relax. to time-evolving prescribed field
1539    o Adding Laplacian-type smoothness constraint on
1540      initial and boundary (forcing) controls (ic, bc)
1541      * enable at compile-time via
1542        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1543      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1544      * Absolute scale somewhat unclear so far
1545      * no area weighting was included since no other cost term does so far
1546    
1547    checkpoint57y_post
1548    First step for a NLFS adjoint
1549    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1550    o new init. routines for calc_r_star, calc_surf_dr
1551    o still need to deal with ini_masks_etc
1552    o testreport seemed happy
1553    checkpoint57y_pre
1554    
1555    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1556    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1557    o add new offset feature to offline pkg (plus minor cleanup)
1558    o cfc fixes for final year of integration
1559    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1560      be in GCHEM_OPTIONS).
1561    
1562    checkpoint57x_post
1563    o fix testreport Pb in multiple test experiment.
1564    o cleanup our namelist syntax in verification:
1565      - make it more F95 standards compliant (some work still needed)
1566      - allows the vast majority of our tests to work with gfortran
1567    o Non-Hydrostatic:
1568     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1569     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1570    o Allow to apply AB on T,S rather than on AB(gT,gS):
1571     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1572     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1573       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1574     - need a "clever" read_pickup to restart from the other AB formulation
1575    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1576    o remove some unused variables (reduces number of compiler warnings)
1577    o adjoint
1578      * Disable useVariableViscosity for adjoint for time being
1579        (there are a number of extensive recomputations)
1580      * Initialize certain variables needed for adjoint
1581    
1582    checkpoint57w_post
1583    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1584                 fix the singleCpuIO RS version of MDSWRITEFIELD
1585       and add a WARNING if using globalFiles=T with multi-processors.
1586    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1587      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1588    o tracer advection scheme:
1589      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1590       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1591       was not very convenient).
1592      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1593       (further tests needed for the implicit DST & Flux-Limiter schemes).
1594    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1595      and sRef for convenience, handy, when you want to initialize
1596      ptracers in a large domain with a constant non-zero value. Also,
1597      untangle ptracers_init.F a little.
1598    
1599    checkpoint57v_post
1600    o change dome exp. to use variable viscosity in side-drag terms.
1601    o remove all the files from the cfc_offline test since they are now
1602      incorporated into tutorial_cfc_offline which has been producing
1603      identical results for a few days of testing
1604    o add new parameter: sideDragFactor to enable half-slip-side BC
1605      and change side-drag S/R to use viscosity from mom_calc_visc
1606      (can switch back by setting sideDragFactor=0.); affects results at
1607      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1608       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1609    o vorticity & strain are now computed without masking, to account for
1610      no-slip-side BC in variable viscosity calculation ; mask is applied
1611      anyway later on, before computing advection/coriolis terms.
1612    o modify exp4 to test new obcs support for reading from external files
1613      and for passive tracers
1614    o fix behavior of ptracers_monitor when monitor output is written to a
1615      netcdf-file; still not independent of monitor.F (writes in the same
1616      file).
1617    o change default value of tRef (put a uniform, meaningful value for ocean
1618      & atmos) and initialize sRef (was missing, as Martin mentioned).
1619    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1620      to be proportional to enstrophy dissipation length.  Thus,
1621       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1622      This is now consistent with Smagorinsky and with the manual.
1623    
1624    checkpoint57u_post
1625    o OBCS and PTRACERS: add open boundary support for passive tracers
1626      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1627        OB-values from file; this is not different from the way theta and salinity
1628        are treated
1629      - however, Orlanski-radiation conditions are not supported, and the model
1630        will stop if you use pTracers and Orlanski at the same time.
1631      - beefed up the rountine obcs_external_fields_load: now only those open
1632        boundary values are overwritten with values from files for which there
1633        are really files, otherwise the OB-fields remain untouched. This makes
1634        it possible to use different OBs at different ends of the domain (as
1635        with EXF)
1636    o reduce number of exch calls in shap_filt (s2).
1637    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1638      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1639    
1640    checkpoint57t_post
1641    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1642    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1643      same truncation, independent of the face number: affects affects several
1644      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1645    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1646      note that biharmonic viscosity + no-slip was not tested in any experiment.
1647    o fix bug in non-linear free-surf side-drag ; generate new output for
1648      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1649    o make mnc honor the writeBinaryPrec flag for most kinds of output
1650    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1651    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1652      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1653    o add brackets in multi-terms sum to get same truncation, independent of
1654      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1655      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1656    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1657      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1658      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1659      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1660      Suggested values of viscosity parameters found in mom_calc_visc.
1661      Many new viscosity diagnostics available.
1662    
1663    checkpoint57s_post
1664    o Add clearing-house for viscosity calculations, mom_calc_visc and
1665      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1666      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1667      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1668      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1669      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1670      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1671      ViscAhStrain and viscAhTension are now retired.
1672    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1673    o In response to JMC's bug report, genmake2 now ignores any soft-links
1674      that it finds in the *current* directory when searching for files.
1675      Soft-links found in any other source directories will still work as
1676      they did before.
1677    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1678      a C routine to unlimit the stack size
1679    o mnc-ify pkg/aim snapshot vars
1680    o mnc-ify pkg/land as requested by Daniel
1681    o various changes to mnc including:
1682      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1683      - output can now be grouped so that all files within a group
1684          change the ITER portion of their names in lock-step together
1685      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1686          and works with both EXCH1 and EXCH2 (but needs more testing)
1687      - writing works for all verification test cases w/ g77 on Linux
1688    
1689    checkpoint57r_post
1690    o make MNC variable initialization happen earlier
1691    o add diagnostics for (almost) each term of the momentum Eq.
1692    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1693  o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)  o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1694  o remove MINIMAL_TAVE_OUTPUT option ;  o remove MINIMAL_TAVE_OUTPUT option ;
1695    add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).    add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1696  o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src  o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1697    allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)    allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1698    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1699    o add time-dependent SST, SSS control
1700    o cost terms in ecco/ modularized (new cost_generic.F)
1701    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1702    o new infrastructure for seaice model vs. obs misfits in seaice/
1703      * driver from the_main_loop.F is seaice_cost_driver.F
1704      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1705      * gradient check in Exp. 6a of natl_box_adjoint/
1706    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1707      (see README file)
1708    
1709  checkpoint57q_post  checkpoint57q_post
1710  o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)  o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)

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