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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.1051 by jmc, Fri Jan 9 21:58:08 2009 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7  o adding precip control xx_precip  o pkg/flt:
8  o moved ptracer ctrl index 17 -> 32   - improve criteria for finding which tile owns a float.
9     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
10    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
11      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
12      with ocean biogeo)
13    o pkg/flt:
14     - do some cleaning and fix the restart ;
15     - add output.txt in flt_example/results to get this pkg tested.
16    o genmake2: add an EXTENDED_SRC option and flag.
17       for now, cannot be turned on on command line (only through genmake_local)
18    o pkg/mdsio: read/write vector:
19     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
20     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
21       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
22     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
23      (drop to 4 digits matching for grad). But this test does not look very
24      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
25    
26    checkpoint61g
27    o pkg/flt:
28      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
29       + make OPTIONS file more standard.
30      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
31      - fix _BYTESWAPIO CPP-Flag
32      - standard reading of file-parameter "data.flt"
33      - fix argument list of S/R FLT_RESTART
34      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
35    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
36    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
37      a still unfixed compiler/optimization bug
38    
39    checkpoint61f
40    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
41      update results of global_ocean.cs32x15.icedyn test.
42    o move getcon.F from model/src to pkg/fizhi.
43    o pkg/exf: add parameter for extrapolation of temp up to the surface
44       and option to prevent negative evap (in bulk_largeyeager04 only).
45    o Prather Advection scheme: fix tracer conservation for divergent flow
46      (e.g., when using NonLin Free-Surface).
47    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
48    o gmredi (Visbeck-variable-K):
49     - add more parameters to Visbeck-variable-K.
50     - use a 5 points average for dSigmaR in Visbeck-K calculation
51       (more "homogenous": same stencil and same weights as in dSigmaH)
52     - update output of ideal_2D_oce experiment.
53    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
54      (#undef REAL4_IS_SLOW)
55     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
56       coordinate variable
57     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
58       (surface forcing fields), removes some of the functionality
59     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
60     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
61       probably not all: copy _RS surface flux fields to RL field before
62       calling DIAGNOSTICS_FILL
63     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
64       real*4 (CALL EXCH_*_RS) versions.
65     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
66       (generate new output).
67    
68    checkpoint61e
69    o gmredi (Visbeck-variable-K):
70      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
71      - change computation of Visbeck-K where Slope > Smax :        
72        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
73        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
74    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
75      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
76    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
77    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
78      does not become too large (to avoid precision problems in implicit-diffusion
79      solver); update ideal_2D_oce output.
80    o pkg ggl90:
81      - in ggl90_cal.F: compute only one set of visc/diff, used to
82        step forward TKE/T/S/momentum
83      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
84        have Prandlt =1)
85    o gmredi (fm07):
86      - add lower limit on Transition layer thickness + lower limit on 1/lambda
87      - allow to set few more params from data.gmredi
88    o pkg ggl90:
89          - add missing sqrt(2) factor in computation of mixing length
90            scale in ggl90_calc.F
91            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
92    
93    checkpoint61d
94    o adjoint modifs
95      - adapt to new field rhoInSitu
96      - allow to revert from StoreDynVars2D, StoreDynVars3D
97        to individual fields
98        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
99    o store 3-D (in-situ) density in commom block (DYNVARS.h)
100     - save 1 rho computation.
101     - no longer modify T & S inland when using down_slope pkg.
102    o gad_som : allow to switch to SOM advection for T & S without corresponding
103      pickup files (using new S/R: MDS_CHECK4FILE).
104    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
105      (for useSingleCpuIO to work in multi-threaded)
106    o pkg/shelfice:
107     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
108       with SHELFICEtopoFile in data.shelfice
109     - move code for reading ice shelf topography and modifying hFacC into separate
110       subroutines of the shelfice package
111     - separate initialisation of "fixed" and "variable" variables
112     - kTopC is not (yet) replaced by kSurfC, although this is possible
113    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
114    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
115      and rename:
116      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
117      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
118    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
119    
120    checkpoint61c
121    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
122      to add mass source/sink of fluid in the interior (3-D generalisation
123      of oceanic real-fresh water flux).
124    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
125    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
126    o new pkg: down_slope
127      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
128      - presently, modify T & S inland (dwnslp_calc_rho.F).
129        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
130      - implementation for ocean in P-coords not tested.
131      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
132    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
133      (to facilitate conversion of oceanic pkg to p-coordinate).
134    o change FIND_RHO to FIND_RHO_2D :
135      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
136    o new pkg: cheapaml
137    
138    checkpoint61b
139    o exch2:
140      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
141      - no longer depend on the order sequence (N,S,E,W).
142      - 3rd exchange no longer needed (tested with 24 tiles).
143      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
144      - exch_UV_A-grid readily available (but not yet tested).
145      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
146      (both are no longer needed) in exch_uv: no effect in forward run; but
147       get truncation error differences with adjoint exch.
148    o exch2:
149     - change index-bounds storage (moved from target to local tile,
150       more intuitive this way) ; rename/remove some variables.
151     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
152    
153    checkpoint61a
154    o exch2/matlab-topology-generator:
155      fix bug in index bounds for N-S internal exchange (hard to tell if this
156      had any effect on the solution).
157    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
158      is exceeded
159    o testreport: modify syntax of awk, so that it works also with
160      awk, and not only with nawk and gawk
161    
162    checkpoint61
163    o autodiff
164      Change default for TAF usage by removing argument '-nonew_arg'
165      This changes TAF subroutine argument list (ordering of active var.)
166      Omission of this flag leads to incompatibility w.r.t. TAMC
167      To restore TAMC-compatibility, need following modifs:
168      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
169      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
170      Tested TAF version is 1.9.22
171      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
172    
173    checkpoint60
174    --->>> This is the last checkpoint for which generating the adjoint
175    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
176    --->>> by default.
177    --->>> Future checkpoints will ommit this flag by default.
178    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
179    o pkg/grdchk: Add gradient check to etan0 perturbations.
180    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
181    o pkg/autodiff: more flexibility in zeroadj.
182      model/src: modifying do_oceanic_phys.F accordingly.
183    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
184    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
185      special setup of gmredi for which the adjoint is stable
186      enough for parameter optimization.
187    o bridging the gap between eddy stress and GM.
188      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
189          along with a change in CPP option (now ALLOW_EDDYPSI).
190      -> when using GM w/ GM_AdvForm:
191          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
192          is applied either in the tracer Eq. or in momentum Eq.
193          depending on data.gmredi (intro. GM_InMomAsStress).
194      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
195      The key modifications are in model/src/taueddy_external_forcing.F
196      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
197    
198    checkpoint59r
199    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
200      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
201      fix option to read coriolis(@ cell-corner) from files with CS-grid.
202    o pkg/mnc: add some attributes to standard 1D-coordinate variables
203    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
204      mass points, when using mnc for output
205      - add runtime parameter (missing_value, missing_value_int) to override
206        default (which is the value of getcon('UNDEF'))
207    o pkg/mnc: prepare mnc for the actual use of missing values with the
208      diagnostics package: small fix in mnc_cw_readwrite.template and more
209      initialisation of never used fields
210      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
211      versions
212    o pkg/thsice/thsice_ini_vars.F added default initial values so that
213      thermodynamics sea ice solver does not blow up when some initial fields
214      are missing.
215    o move from external_forcing_surf.F to ini_forcing.F
216      the p-coord. hack consisting in using pLoad to set phi0surf ;
217      update output of tutorial_global_oce_in_p (affected @ truncation level).
218    o Freshen up a bit hs94.1x64x5, notably:
219      remove rotationPeriod and tRef=5*0. (adjoint only), and add
220      exactConserv=.TRUE.
221    o pkg/generic_advdiff:
222      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
223      applies to files where Temperature & Salinity 2nd Order moments are used.
224    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
225      this uses a dynamically allocated internal state data structure
226      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
227      and requires a fortran 90 compiler
228    
229    checkpoint59q
230    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
231       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
232    o Refresh tutorial_global_oce_biogeo, notably:
233      - change bathymetry (put back seamounts in ACC, use hFacs)
234      - change EOS (POLY3 --> JMD95Z)
235      - use Bryan-Lewis vertical diffusivity
236      - use multidimensional advection
237      - remove old virtual virtual in dic pkg, now done through ptracer pkg
238      - change a couple of parameters in dic pkg
239    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
240    o pkg/obcs: change default to OBCSfixTopo = .true.,
241      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
242      - replace "debugMode" with "debugLevel .GE. debLevB"
243    o implementation of TAF directives for gchem,cfc,dic
244    o remove "exp5" (replaced by tutorial_deep_convection).
245    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
246      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
247      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
248      --> changes results in exp4, seaice_obcs
249    o tutorial_deep_convection :
250      update the set-up and increase resolution and domain size ; start
251      from pseudo initial conditions = output at t=120mn in order to see
252      something happening when running testreport.
253    o pkg/seaice: add os7mp as an advection scheme
254                  add check for advection schemes
255                  add a flag for restoring T and S underneath sea ice
256    o pkg/my82: add netcdf-support and diagnostics
257    o thsice pkg:
258      - Now hsMax limits snow height by turning it into ice following
259        flooding scheme (and now conserving energy)
260      - Slight rewriting of the formula in thsice_calc_thick.F
261      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
262      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
263    
264    checkpoint59p
265    o gchem / dic / cfc :
266      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
267      - add new parameter files: "data.dic" & "data.cfc" ;
268      - various re-arrangement in initialisation & header file ;
269      - fix tutorial_global_oce_biogeo for multi-threaded test.
270    o pkg/dic: test for "pickup_dic" file when restarting ;
271      if no pickup-file, can restart with a re-initialised pH (same as it did
272      before) providing pickupStrictlyMatch is set to False.
273    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
274      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
275    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
276      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
277    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
278     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
279       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
280    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
281       scheme to use for vorticty-term ;
282     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
283       (with default selectVortScheme, return to original discretisation)
284     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
285    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
286    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
287      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
288      also fix diagnostics VISCAHW & VISCA4W.
289    
290    checkpoint59o
291    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
292    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
293      move a few statemens out the main loop into separate loops
294    o pkg/shelfice:
295      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
296        (kg/m^2/s), does not break tests, because in verification/isomip,
297        rhoConstFresh=rhoConst (by accident)
298      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
299      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
300        new file model/src/seawater.F, so that they are available for all pkgs.
301      - convert potential temperature into in-situ temperature. This changes the
302        isomip tests => update tests
303    o add a flag writePickupAtEnd (default=true) to be able to suppress
304      writing a pickup at the last timestep
305    o tools/mpack-1.6 :
306      - disable automake (not working) and autoconf (not needed).
307      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
308        also cleaner with much less compilation warnings.
309    o pkg/profiles:
310      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
311      (for "less than 32 characters name" compiler requirement)
312    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
313      conditions that have a different sampling frequency than S/T/U/V obcs
314    o pkg/diagnostics (stats-diags):
315      - fix global Min/Max in case 1 processor get only empty tiles
316    o genmake2: replace (4 times)
317         make genmake_tc_1.o >> genmake_warnings 2>&1
318      with
319         COMM="$CC $CFLAGS -c genmake_tc_1.c"
320         echo $COMM >> genmake_warnings
321         $COMM >> genmake_warnings 2>&1
322      to make genmake2 always see the value of CC as specified in the optfile.
323    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
324      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
325      - modify verification advect_cs test to test SOM-advection on CS-grid.
326    o pkg/ctrl:
327      - Rewrite of ctrl_map_ini_ecco.F,
328        introducing a generic routine (ctrl_map_ini_gen.F).
329      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
330    
331    checkpoint59n
332    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
333      number in dedicate array "hdiag":
334      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
335        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
336      - many small changes (integer format) for large number of diagnostics
337      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
338        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
339    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
340      usingSphericalGrid, this allows to define the rotated grid coordinates
341      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
342      geographical coordinates according to the inverse of the rotation defined
343      by the Euler angles, so that Coriolis parameter and online-interpolation by
344      exf works with the geographical coordinates on XC/YC/XG/YG.
345      Naturally, this feature does not work with all packages, so some
346      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
347      profiles), because there the coordinates are assumed to be regular
348      spherical grid coordinates.
349    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
350      - introduce isopycnal diffusion coefficient control.
351    o tools/adjoint_options:
352      - additional control vector components.
353    o pkg/mnc: have mnc create marginally meaning full coordinate variables
354      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
355    o pkg/mypackage:
356      - add example of read/write pickup for state-var ;
357      - add entry points to the main code for state-vars diags & write-pickup.
358    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
359      transitions for useExfYearlyFields
360      - add new subroutine that determines the file to read from for
361        use*YearlyFields = .TRUE. and .FALSE.
362      - add a verification experiment to global_with_exf that tests
363        useExfYearlyFields with USE_EXF_INTERPOLATION defined
364    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
365      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
366      subroutines (which could be generated from a template, because they are
367      almost identical), for now they are included in obcs_prescribe_read.F for
368      simplicity
369    o pkg/exf:
370      - add a little more diagnostic to exf_interp_read (in analogy to
371        mds_read_field, can be turned off with debugLevel < debugLevA=1)
372      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
373        ugly but fast by unrolling short inner loops, inserting a unroll=8
374        directive in routine lagran, and splitting a loop and making do while the
375        outermost loop (the latter requires the intoduction of index arrays)
376    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
377    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
378      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
379    o verification/seaice_obcs: updated for restart test and latest options
380    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
381      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
382      for now this is only available for the C-grid code and also within
383      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
384    
385    checkpoint59m
386    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
387      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
388    o gad_som : fix flux output (& diagnostics) to have same units as other  
389      advection scheme fluxes (was previously multiplied by deltaT).  
390    o added verification/seaice_obcs both to test seaice open boundaries
391      and to provide an example matlab scrpt for generating them
392    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
393    o pkg/salt_plume: clean up salt_plume_frac.F to
394      remove redundancy in PlumeMethod 1 and 4
395    o pkg/kpp: added saltplume diagnostics
396    o pkg/obcs and pkg/seaice:
397      - do not set uice and vice to zero when OB*icefile are unspecified
398      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
399      - moved seaice tracer obcs after call to seaice_growth
400    o pkg/salt_plume: added various options for salt plume depth
401      criterion and for vertical distribution of the salt
402    
403    checkpoint59l
404    o pkg/ptracers: new version of ptracers pickup:
405      read meta file and write only fields which are needed to restart.
406      ( same logic as main pickup file ; also using pickupStrictlyMatch )
407    o pkg/seaice:
408      - add timescale for melting due to warm mixed layer as a means of
409        setting SEAICE_availHeatFrac more conveniently
410      - add a CPP-flag/runtime parameter check for flooding algorithm
411      - reformulated availHeat in seaice_growth.F to be independent of AREA
412    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
413      unit changes
414    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
415    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
416      SX vector computer.
417    o pkg/seaice:
418      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
419        seaice forcing fields can now be read only through pkg/exf
420      - removed some unused halos
421    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
422    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
423      or U/VICE from U/VWIND before computing U/VSTRESS
424    
425    checkpoint59k
426    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
427      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
428    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
429      all experiments pass when compile with un-initialised var. checking option.
430    o added pkg/salt_plume
431    o script to test restart (for now, in MITgcm_contrib/jmc_script)
432    o pkg/seaice: new read/write pickup version.
433      read meta file and write only fields which are needed to restart.
434      ( same logic as main pickup file ; also using pickupStrictlyMatch )
435    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
436    o lab_sea.hb87: modify the domain & update output.hb87.txt :
437      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
438      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
439      process. Fixed here by closing the domain at the Northern boundary.
440    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
441    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
442      a set of consecutive levels in/from a 3-D array.
443    o pkg/ptracers:
444      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
445      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
446    
447    checkpoint59j
448    o in pkgs: dic, obcs, offline, rbcs:
449      standard way to compute coeff. for time interpolation between 2 time reccords
450      which retains full precision (& make results less dependent on compiler).
451      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
452    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
453      packages instead of reading ice cover and wind speed separately
454    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
455     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
456      to allow to compile customized code before the update)
457    o cleaning-up:
458      - fix CPP instruction syntax in pkg/obcs
459      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
460        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
461      - fix some threads issue in IO parts.
462    o pkg/dic:
463      - add tons of "_d 0" (--> much better testreports !)
464       and then update outputs of tutorial_global_oce_biogeo
465    o pkg/mom_fluxform:
466      add a special version of momentum advection intended to conserve momentum
467      next to a bathymetry step or a coastline edge. (default = off = #undef)
468    o new read/write pickup version:
469      - for now, only implemented for main (mdsio) pickup file.
470      - write out only what is needed to restart; merge pickup_nh , pickup_ph
471        and main pickup together.
472      - read meta file; read only what is needed to restart; stop if a field
473        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
474        if it make sense (even if the restart is not perfect).
475      - if no meta file, assume that pickup to read corresponds exactly to
476        a pickup that would currently be written.
477      - read pickup written in the old format (until checkpoint59i) if it
478        recognizes an old meta file (no field-list).
479      - add a meta file in exp. which starts from a pickup: 2 cases:
480        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
481         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
482        b) a meta file describing the content of the associated pickup file
483         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
484    o pkg/mdsio & pkg/rw:
485      - new routine to read a meta file ; new set of routine to read
486        Multiple-fields file (with meta file).
487    o added open boundary conditions capability for seaice
488        HSNOW, HSALT, UICE, and VICE
489    
490    checkpoint59i
491    o adjoint:
492      * fix multiDimAdvection adjoint
493        (partial recomputation problem by TAF for fVerT(:,:,kDown)
494        and comlev1 size definition (maxpass vs. max. number of tracers)
495      * verification/global_ocean.90x45x15 adjoint now tests
496        NLFS and multiDimAdvection using DST3 (=30)
497      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
498    o pkg/kpp: add "_d 0" to real constant (if missing);
499      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
500      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
501    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
502      for internal parameters related to restart process (formerly from PARAMS.h)
503      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
504    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
505      as argument. (only atm2d & obcs write_pickup have not yet been updated)
506    o pkg/monitor:
507      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
508      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
509      - account for deep Atmosphere factor and density factor (anelastic)
510    o added open boundary conditions capability for seaice HEFF and AREA
511    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
512      thermodynamics
513      - requires a little reorganization, which affects the testreport results
514        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
515        so that now the conservative form is tested
516      - add a few comments
517    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
518    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
519    o add new diagnostics to seaice: advective, diffusive fluxes (only for
520      multidim-advection, for scheme 2 they are not filled) and transports,
521      thermodynamic growth rates
522    o change units of EmPmR (inside the code, + within coupling interface)
523      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
524      Affects results @ truncation level (cg2d match) and update output of
525       experiments: lab_sea(6), global_ocean.90x40x15(10),
526      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
527      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
528      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
529      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
530    
531    checkpoint59h
532    o pkg/exf:
533      - improve vectorization by moving if-statement out of loops in
534        exf_mapfields, exf_radiation
535      - exf_bulkformulae.F: introduce 2D fields and vectorize code
536    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
537    o testreport:
538      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
539        monitor & update offline_exf_seaice exp. output.
540      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
541    o pkg/seaice:
542      - bug fix in the evp solver: boundary conditions were affected be
543        masking of zMax/zMin (changes results)
544      - minor bug fix in boundary conditions in seaice_calc_strainrates
545        (changes results for no_slip)
546      - seaice_lsr.F: make interpolation of eta dependent on boundaries
547      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
548      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
549        stress formulation and no-slip boundary conditions
550    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
551      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
552    o pkg/seaice: a first HSALT time stepping equation has been checked in
553    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
554      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
555      without requiring DO-IF statements
556    o pkg/thsice:
557      use continuous power-law function for partition of energy between lateral
558      melting/freezing and thinning/thickening ; old code using step function
559      still available with #undef THSICE_FRACEN_POWERLAW
560      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
561    o testreport: change AD testing : check against results/output_adm.txt
562      using same scripts as for forward test.
563    
564    checkpoint59g
565    o adjoint testing: in preparation for changing testreport:
566      - output format: cost and grad written on separated lines
567      - ad output results in directory "results" (instead of "results_ad")
568    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
569    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
570    o pkg/ecco: allow user defined cost function contributions
571    o testreport:
572      Allow to choose (per experiment) the list of tested output variables
573       and the main variable (used to issue a pass/FAIL ) ;
574      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
575      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
576      Also modify printing of summary:
577       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
578       b) echo the list of tested variables in the individual summary.txt of
579          each experiment.
580    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
581      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
582      (but still depend on the tile decompostion of the domain).
583    o pkg/seaice: change a discretization detail to make the B-grid code
584      "more symmetric". This change is likely to remove all "ridges/leads" that
585      where quasi-aligned with the grid in B-grid solutions. It may also be
586      the solution to the stress coupling issues with the B-grid.
587    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
588      remove .cvsignore from input dir. (since testreport no longer run here).
589    o pkg/thsice:
590     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
591     - fix reshaping of sea-ice just after advection:
592       melt all the ice only if ice-volume is too small.
593     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
594       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
595     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
596    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
597      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
598    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
599      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
600      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
601      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
602      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
603      -> update output.txt
604    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
605     this affects truncation error: -> update output.txt of exp:
606      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
607      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
608    
609    checkpoint59f
610    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
611    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
612      a bounded range (in forward mode)
613    o pkg/ecco, ctrl, autodiff and mom_common:
614     internal parameter controls, completements of implementations
615    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
616    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
617      (not seem any difference in testing results).
618    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
619       at face corners.
620    o pkg/generic_advdiff:
621     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
622      loop range indices for computing vertical advection tendency
623      and do the calculation in the interior only (no overlap) ;
624      for now, only implemented for SOM advection (to save CPU time).
625     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
626    o exch2 adjoint
627      First set of changes:
628      - add exch2 hand-written adjoint templates
629      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
630        This will require cleanup in pkg/autodiff/*.F
631        (changed routines currently kept separate in verif. code/)
632      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
633        that used to hide exch2 or cubed-sphere specific code
634        (commented via 'cph-exch2')
635    o pkg/seaice
636      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
637    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
638       output of global_ocean.cs32x15.thsice .
639    
640    checkpoint59e
641    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
642      for B-grid vector (not yet tested) and C-grid vector (<- only used
643      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
644    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
645      (#ifdef ALLOW_SALT_PLUME)
646    o gather_2d/scatter_2d: removed halo regions
647    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
648      scheme and the corresponding test case (under front_relax dir). For now,
649      only available with Skew-flux form and not yet tested in realistic set-up.
650      adjoint: store directives updated, but gradient checks deteriorated,
651      so maybe GM/Redi adjoint is now broken.
652    o seaice adjoint
653      * add AREA, HEFF, HSNOW as control variable
654        (should not change lab_sea results)
655      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
656    o pkg/seaice:
657      * added computation of saltFlux in seaice_growth;
658        For time being, sea ice salinity is assumed constant
659        contribution of snow flooding to freshening of sea ice is neglected.
660        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
661        defaults to 0.0 in order to maintain backward compatibility.
662        Typical values for SEAICE_salinity are 4 to 10 g/kg.
663      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
664      * added SEAICE_availHeatFrac, which specifies fraction of surface level
665        heat content used to melt or grow ice
666      * commented out cap of HICE: it helps keep ice thinner
667      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
668      * applied OBCS T/S mask to HEFFM sea ice mask
669    
670    checkpoint59d
671    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
672     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
673     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
674    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
675     and change default value of parameter "GM_Small_Number";
676     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
677       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
678       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
679    o pkg/ecco: cost function when applying pkg/smooth to controls
680    o pkg/ctrl: add forcingPrecond run time parameter
681    o pkg/seaice:
682     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
683     - fix bug in metric terms of u-equation in LSR solver (implicit part),
684       changes verification/lab_sea
685     - rearrange implicit part of u-equation in LSR solver to make it easier to
686       read, understand, and debug. This causes changes at the truncation level.
687     - fix (serious) bug in the boundary conditions (sign error in the implicit
688       part) of the LSR solver. Changes all LSR results.
689     - fixed problem with HSNOW initialization to avoid thick snow when AREA
690       is initilized with small values - does not change lab_sea results.
691     - added HsnowFile initialization capability
692    o pkg/smooth: addition to model/src and pkg/ctrl so allow
693     initialization of pkg/smooth and application to control vector
694    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
695    o dependencies: pkg/profiles requires pkg/cal
696    o pkg/profiles:
697     - added option ALLOW_PROFILES_GENERICGRID
698         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
699         that interpolation information (grid points and coefficients) is provided
700         within the netcdf input files.
701         -> sample matlab scripts can be found in MITgcm_contrib/gael
702         that allow you to prepare netcdf input files.
703     - also modified: cleaner include statements, cleaner error print statements,
704       cleaner stops when error, and more tests of the netcdf input files consistency.
705    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
706    o pkg/seaice:
707     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
708       requires a new routine: seaice_diagnostics_fill.F
709     - make sure that seaice does not move if not forced (pressure replacement
710       method, Hibler and Ip, 1995), changes results
711     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
712     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
713       It is turned off by default (=-1.), because it changes the results.
714     - make it possible to read AREA from a file, too.
715    
716    checkpoint59c
717    o add S/R and diagnostics for oceanic mixed-layer depth
718    o move GMRedi call after all vertical mixing schemes (including KPP)
719    o pkg/thsice:
720     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
721      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
722    o pkg/obcs:
723     - bug fix for balance code
724    o pkg/seaice:
725      - allow values of SEAICE_elasticParm > 1
726      - add new parameter SEAICE_evpTauRelax as an alternative
727        to SEAICE_elasticParm
728      - make lsr boundary conditions free slip (by default), changes result
729      - add code for no slip boundary conditions for lsr
730      - set minimum of zeta to zero (and not 4e8) (changes results)
731      - add a cap on AREA after advecting AREA if seaice_growth is not called
732    o change calculation of Visbeck K:
733      - no longer depend on tapering scheme; instead, compute slope (limited
734        by GM_maxSlope). this is equivalent to what was comuted before with
735        clipping or linear tappering.
736      - fix vertical averaging (wrong by 1/2 level)
737      - leave the old version (but will not be maintained) within
738        #ifdef OLD_VISBECK_CALC / #endif
739      - update output of exp. ideal_2D_oce
740    o change error catch in calc_r_star to improve vectorization
741    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
742      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
743    o adjoint:
744      Re-organized adjoint checkpointing according to Matt Mazloff
745      (but with modifs/completions/cleanups)
746      Storing is now bundled into large arrays to optimized I/O
747      (and second step in cleanup of the_main_loop)
748    
749    checkpoint59b
750    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
751      - export/import (between ocean & coupler) fields needed for ocean DIC.
752    o pkg/seaice:
753      - get rid of three more exchanges seaice_calc_viscosities (required
754        different loop boundaries in seaice_lsr and seaice_ocean_stress)
755      - bug fix in seaice_ocean_stress (update of lab_sea required)
756      - reduce loop boundaries to necessary minimum also in seaice_evp
757      - go back to the old way of computing deltaC/Z as the adjoint likes that
758        better
759    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
760      passive tracer to an Age Tracer) + update output.txt
761    o pkg/exf:
762      - implement A-grid / C-grid selection for wind-stress input files.
763      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
764      for now, in exf_bulk_largeyeager04.F only :
765      - change implementation for case where windspeed + 2. components wind-stress
766        are read-in. AND use rhoConstFresh to convert evap.
767    o pkg/seaice:
768      - use correct EXCH_UV for wind-forcing (on A-grid).
769      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
770        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
771    o pkg/exf:
772      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
773      EXF_INTERPOLATION:
774      - merge global_with_exf/code version of exf_interp_read.F
775        to the main code ;
776      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
777        reading the file ; Important: This options needs to be defined to recover
778        previous code.
779        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
780      - no longer loose real*8 precision along the way when using exf_iprec=64.
781    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
782      - change discretisation of evp-solver in order to avoid another exchange
783        (changes lab_sea) and clean up a little
784      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
785        help the adjoint (this also changes the results slightly)
786      - add a few "_d 0" where they had been missing in seaice_evp.F
787      - cleaning up: remove unused seaice_calc_rhs.F
788    o pkg/exf: some cleaning-up:
789      - change various "constants" into runtime parameters
790      - cleaned-up Large&Yeager04 routine which should eventually
791        replace exf_bulkformulae.F (changed names of S/R and CPP)
792        and merged various ALLOW_ATM_WIND options
793     only used with thsice pkg (in thsice_get_exf.F):
794      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
795        which are used when useStabilityFct_overIce=TRUE (= the default)
796      - change default values of ice & snow emissivity and scale downward LW
797        by ice & snow emissivity.
798    o pkg/thsice:
799     fix few little problems, in thsice_calc_thickn.F:
800      - growth vertically (and not laterally) if iceFrac == iceMaskMax
801      - melt only laterally if hIce < hThinIce (as the comments say)
802      and in thsice_extend.F:
803      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
804      - start to form ice as soon as the minimum ice-volume is reachable.
805     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
806      and cpl_aim+ocn
807    o pkg/kpp
808     - move computation of surface related input fields to KPP into a new
809       subroutine kpp_forcing_surf.F
810     - remove wrong (within bi,bj loops) EXCH calls.
811     - little cleaning (add argument myThid in last position, cvs header ...)
812     - for now, fix conservation problem by exchanging KPPviscAz (may not
813       be the best fix)
814    o pkg/seaice
815     - check for inconsistent evp parameter/cpp-flag combination
816     - remove leftover errIO flat for obsolete name list error handling
817    o OpenAD
818     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
819    
820    checkpoint59a
821    o pkg/seaice: some parameter clarifications and a little bit of clean up
822    o pkg/thsice: rename run-time parameters:
823       himin       -> hIceMin
824       himin0      -> hThinIce
825       hihig       -> hThickIce
826       i0          -> i0swFrac
827       transCoef   -> bMeltCoef
828       frac_energy -> fracMelting
829      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
830       with default values (for now) that do not change the results.
831      remove old version of thsice vars advection in pkg/seaice.
832    o in FFIELDS.h:
833      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
834      - make pLoad & sIceLoad always available (but still only used if
835         ATMOSPHERIC_LOADING is #define).
836    o pkg/kpp: replaced _KPP_RL with _RL
837    o bug fixes for vertical diffusivity computations when both KPP and
838        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
839        are no longer updating the vertical diffusivity array
840        (passed as argument) but are (re-) setting those arrays.
841    o pkg/seaice: fix bug in evp solver, while doing that
842      - change (improve?) discretization of stress computations for both
843        cgrid-lsr and evp solver
844      - add a new routine to compute strain rates
845      - the above changes lab_sea results
846      - add no slip conditions for evp solver (off by default), lsr-version
847        may follow
848      - fix exchange for shear at Z-points (does not change lab_sea)
849      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
850        (to force the user to pick a time step since there is not "safe" way
851        of choosing it)
852      - add principal stress diagnostics
853      - rearrange fields for evp a little to avoid having to call a: too many
854        exchanges and b: exchanges for stress trensor components which we do
855        not have.
856      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
857        of evp, complete rewrite for lsr case (latter is does not yet work
858        in all cases)
859    o pkg/kpp: add code to have mixing in shelf ice caverns
860      - add myThid to all kpp routines (long overdue)
861    
862    checkpoint59
863    o pkg/exf:
864      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
865        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
866      - move exf header files from lower_case.h to UPPER_CASE.h ;
867        add missing cvs Header & Name
868      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
869      - add namelist param. selectStressGridPosition, exf_monFreq
870      - retire many _CLIM routines, and remove data.exf_clim
871        + params moved to data.exf
872        + climsst, climsss now handled by exf_set_gen, i.e.
873          climss?period=0 refers to constant field,
874          climss?period=-12 to monthly forcing
875      - split up namelists in data.exf
876    o pkg/seaice:
877      - remove seaice_exch and seaice_exch_uv
878      - remove superfluous exchange of theta
879      - add myThid to seaice_budget_ocean/ice
880      - add new interface for atmospheric wind forcing (C-grid only)
881        + new routine
882        + two new field (taux, tauy for stress over ice)
883        + removed one global field (DAIRN) for C-grid case only
884    o pkg/thsise
885      - 2nd set of modifs for thsice adjoint in conjunction with exf
886    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
887    
888    checkpoint58y_post
889    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
890      vertical diffusivity, similar to that in MOM4; turned on using
891      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
892      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
893    o Added capability for 3D specification of background vertical diffusion
894      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
895      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
896      "data" file that contains the 3D vertical diffusivity coefficients.
897    o ice dynamics (pkg/seaice) with thsice thermodynamics:
898      - add code within pkg thsice to advect & diffuse sea-ice fields
899      similar to (and will replace) what has been added in  seaice_advdiff.F,
900      but: - conserving Mass, Heat & Salt.
901           - better when using non-linear advection scheme (not yet fully tested)
902           - can also be used in atmospheric set-up (for now, only the diffusion).
903    
904    checkpoint58x_post
905    o IO option for global-file compact format:
906      - add options when generating topology (utils/exch2/matlab-topology-generator)
907      - add I/O capability (pkg/mdsio).
908      - adapt utils/matlab/rdmds.m to read this format.
909      for now long-line format not yet supported by pkg/mdsio (& exch2).
910    o shelfice: add a few diagnostics
911    
912    checkpoint58w_post
913    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
914      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
915      (and replace horiVertRatio in NH code).
916      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
917                         and tutorial_plume_on_slope (sensitive to truncation)
918    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
919      directly to drive seaice model (C-grid only)
920    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
921     - reintroduce computation of wind from stress,
922     - compute tau (in exf_bulkformulae.F) from windstress averaged to
923       mass points to avoid tau = 0
924     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
925    o rdmnc.m: make it work with "global" files created with gluemnc
926    o rdmnc.m : some improvements in dealing with singleton dimension
927      (tested on all testreport mnc output files).
928    o genmake2: disable pkg/profiles if netcdf test fails.
929    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
930    o move call to cal_readparms up to make calendar parameters/variable available
931      to all packages
932    
933    checkpoint58v_post
934    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
935      useDynP_inEos_Zc tested.
936    o pkg/exf: changes to properly interpolate/mask/scale initial fields
937    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
938      and portions thereof.  See read_cs.txt for description and examples.
939    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
940      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
941      following the great-circle arc between those 2 points.
942    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
943      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
944    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
945     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
946     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
947     - still needs work (not working with some options ; efficiency to improve)
948       and serious testing.
949     - use this scheme for temperature & salinity in 2 advection test exp.:
950       advect_xy & advect_xz, respectively.
951    
952    checkpoint58u_post
953    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
954    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
955    o testreport: add option "-skipdir" to skip some test.
956    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
957      momentum calculation.
958    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
959    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
960      remove checkpoint.F and the_correction_step.F (no longer used);
961      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
962    o add option (linFSConserveTr) to correct for tracer source/sink due to
963      Linear Free surface
964    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
965    o pkg/thsice: fix reading mnc-pickups
966    
967    checkpoint58t_post
968    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
969    o pkg/mdsio:
970     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
971       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
972       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
973     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
974     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
975       either MDS_READ_FIELD or MDS_WRITE_FIELD )
976     - new S/R (to replace MDSWRITEMETA), which allows to write more
977       informations (variable names, time ...) to meta files.
978     - modify rdmds.m to give back the meta file content.
979    o pkg/diagnostics: change vertical interpolation to be safer, and more
980       flexible (define p-levels to interpolate to in data.diagnostics);
981      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
982       diagnostic pointer.
983    o pkg/seaice: more cleaning up of seaice_growth, added many comments
984    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
985    o fix multi-category seaice:
986     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
987       SEAICE_MULTICATEGORY
988     - fix short wave heat flux
989    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
990       and allow to use EVP solver. Change forward lab_sea: test both EVP
991       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
992    o Initial check-in of lab_sea adjoint
993      (very similar to natl_box_adjoint/code_seaice)
994      * used C-grid and EVP solver
995      * used KPP, GM/Redi
996      * uses inAdExact=.TRUE.
997      * gradient checks fail for both ADM and TLM
998        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
999        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1000        issue is related to forward mismatch between g77 an ifort
1001    o pkg/seaice: overhaul of thermodynamics
1002     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1003     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1004     - move a few global fields out of SEAICE.h into seaice_growth.F and
1005       make them 2D (FICE/QNETO/ ...)
1006     - remove FO (it is the same as QNETO)
1007     - introduce a few local fields to avoid modifying external fields such
1008       as atemp, etc.
1009    
1010    checkpoint58s_post
1011    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1012      changed exf_set_gen.F so that
1013        genperiod=0 means input file is one time-constant field and
1014        genperiod=-12 means input file contains 12 monthly means
1015    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1016      this affects truncation error ; generate new output file for exp. which
1017      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1018        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1019        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1020        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1021        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1022        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1023    o start implementation of deep-atmosphere and anelastic formulation
1024    o verification: remove 2nd copy of input files and use script "prepare_run"
1025      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1026    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1027    o profiles: fix for multithreaded case
1028    
1029    o diagnostics: rename few diags:
1030      s/'PRESSURE'/'RCENTER '/g
1031      s/'TICE    '/'oceFreez'/g
1032      s/'TAUX    '/'oceTAUX '/g
1033      s/'TAUY    '/'oceTAUY '/g
1034      s/'SWFLUX  '/'oceQsw  '/g
1035      s/DIFx/DFxE/g
1036      s/DIFy/DFyE/g
1037      and add few ocean-forcing diagnostics:
1038      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1039    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1040      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1041      as actual snow thickness.  It now refers everywhere to effective snow
1042      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1043    
1044    checkpoint58r_post
1045    o modifications to pkg/seaice/growth.F, which change results of
1046      lab_sea experiment: fixes pertain to melting snow over open water, to
1047      masking EVAP under sea ice, and to using the correct AREA variable for
1048      computations of EVAP, PRECIP, HSNOW, and GHEFF
1049    o add ability to read bathy, salt, and theta using MNC (off by def)
1050    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1051      both are turned off by default and do no change any results
1052    o seaice advection with pkg/thsice: a step toward the use of non-linear
1053      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1054    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1055      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1056      in natl_box (affects results @ truncation level: update output.txt)
1057    o multi-threading and IO:
1058      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1059      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1060        (needed to work with SingleCpuIO): tested in all verif. exp.
1061    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1062      affects the results (but none of the verification test uses this scheme).
1063    o Adding some pkg/diagnostics capability to pkg/seaice
1064      (will certainly be subject to changes)
1065    o ctrl: adding new control variables:
1066      lwflux, lwdown, evap, snowprecip, apressure, runoff
1067    
1068    checkpoint58q_post
1069    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1070      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1071      high_res_cube configuration by 4% on Columbia.
1072    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1073      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1074      dynamical allocation (seems to work in multi-threaded).
1075    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1076      single CPU io) so that TAF does not have to see EESUPPORT.h
1077    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1078    
1079    checkpoint58p_post
1080    o obcs: stop if obcs is used with useCDscheme = .true.
1081    o shelfice:
1082     - fix a sign error so that no slip at shelfice interface works
1083     - remove stop for combination non-hydrostatic code and shelfice. That does
1084       not mean, that the results are correct, but at least they are numerically
1085       stable
1086    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1087    o added adjoint exch routined for all exch*3d* routines
1088      and updated flow directives
1089    
1090    checkpoint58o_post
1091    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1092      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1093    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1094      and clean-up reading/writing of pickup files.
1095    o fix local version of read/write pickup (NH part) in rotating_tank/code
1096    o simplify EXCH interface:
1097     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1098     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1099    o added the regrid package
1100    o shelfice:
1101     - add a simple boundary layer scheme to reduce noise
1102     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1103    
1104    checkpoint58n_post
1105    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1106       local variable (not in common block).
1107    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1108      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1109      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1110        to work with SingleCpuIO.
1111    o add "_d 0" to real constant of pkg/cfc subroutines ;
1112       update exp. cfc_exemple & tutorial_cfc_offline output files.
1113    o multi-threading and IO:
1114      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1115        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1116      - barrier before and after reading.
1117      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1118      - avoid using MDS_WRITELOCAL for LAND pkg output.
1119      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1120        common-block variables ; Allows multi-threading with master-thread IO.
1121    o change default MAX_NO_THREADS from 32 to 4 ;
1122      and stop cleanly when MAX_NO_THREADS is too small.
1123    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1124    
1125    checkpoint58m_post
1126    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1127       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1128    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1129       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1130       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1131    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1132        add MITgcm_tutorials (= code + all the tutorials)
1133    o ecco, option to compute cost for total ssh (mean+anom)
1134    o consistent with addition of ptracer and ssh in pkg/profiles
1135    o profiles: adding ptracer and ssh
1136    o testreport: change multi-test output-file name
1137      (from output.txt.{name} to output.{name}.txt)
1138    o profiles: now ok for mutli-tiles case
1139    o seaice: add 4 parameters for different advection schemes for area,
1140      (effective) seaice thickness, enthalphy, and snow height. Their default
1141      is the standard parameter SEAICEadvScheme
1142    o calc_gw:
1143     - add cosFacU in zonal viscous flux (harmonic.visc.).
1144     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1145       of tutorial_plume_on_slope.
1146    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1147    o calc_gw: true flux-form, account for horizontal grid spacing.
1148      update rotating_tank results, but not plume_on_slope (affected at
1149      truncation level, 11 digits).
1150    
1151    checkpoint58l_post
1152    o calc_gw:
1153     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1154     - remove side-drag for now (need to fix it); update plume_on_slope results.
1155     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1156    o commit code to make SST/SSS weights spatially variable
1157      (based on either variable in-situ or variable initial T/S weights)
1158    o pkg/ecco:
1159      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1160        now based on horizontally varying weights wthetaLev, wsaltLev
1161      * cost_averagesflags now returns year indices in addition to day, month
1162      * sflux balance is performed on annual basis
1163        (sflxumm, sfluxmm2, bal_sfluxmm)
1164      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1165        including separate counting and multipliers
1166    o pkg/rbcs
1167      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1168    
1169    checkpoint58k_post
1170    o testreport:
1171     - always build in dir. "build" (if not there, mkdir build instead of building
1172       & running in input)
1173     - run in dir run (if it exists), in build otherwise.
1174     - call prepare_run (if input/prepare_run exists)
1175     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1176    o pkg/exf modifications to interpolation and rotation routines for more
1177       reasonable treatment of North Pole singularity: for tracers North Pole
1178       value is set to northernmost zonal-mean value, for zonal velocity it is
1179       set to zero, and for meridional velocity it is set to northernmost value.
1180    o pkg/exf/exf_check_range.F
1181     - add tile index to diagnostics and move stop statement to the very
1182       end of the routine.
1183    o pkg/diagnostics: (diagnostics_main_init.F)
1184      define title of isomorphic variables according to the current config.
1185    o pkg/thsice with pkg/seaice dynamics:
1186    - fix domain of computation (interior only, required for exf) and do exchanges
1187    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1188    o towards a standard way of dealing with multi-threading in MONITOR
1189      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1190    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1191       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1192    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1193    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1194    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1195       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1196    o tracer advection:
1197     - clean-up and simplify calc_common_factors.F
1198     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1199       advection subroutine (but still not used within DST advection S/R)
1200    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1201    
1202    checkpoint58j_post
1203    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1204      from file (collects calls previously in FORWARD_STEP)
1205    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1206    o adjoint store dir. adjusted accordingly
1207    o genmake2
1208      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1209    
1210    checkpoint58i_post
1211    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1212      on wind stress (SEAICEstressFactor defaults to 1.)
1213    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1214      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1215    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1216      on CS-grid: no longer loosing mass.
1217    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1218    o pkg/ggl90: fix sloppy output and fix a bug
1219    o pkg/seaice: added SEAICEuseEVPpickup parameter
1220      - Set to false in order to start EVP solver with
1221        non-EVP pickup files when using SEAICEuseEVP
1222      - fix sign error in diffusion in seaice_calc_rhs
1223    
1224    checkpoint58h_post
1225    * Modifications for bottom topography control
1226      o replace hFacC by _hFacC at various places
1227      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1228      o add non-self-adjoint cg2d_nsa
1229      o update autodiff support routines
1230      o re-initialise hfac after ctrl_depth_ini
1231      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1232    * Adding verification for 5x5 box (4-layer) bottom topography control
1233    
1234    checkpoint58g_post
1235    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1236       used for mean seasonal cycle, mean diurnal cycle); add an example
1237       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1238    o pkg/ggl90:
1239      - add parameter (minimum surface kinetic energy)
1240      - fix bug (avoiding division by zero)
1241    o couple pkg/thsice to pkg/seaice:
1242      - modify advection in seaice to accomodate new scalar fields to be advected
1243      - only muliDimAdection scheme work with seaice/thsice
1244      - mapping of thsice-variables to seaice-variables, back and forth
1245      - does not break the verification experiments, but does not give the
1246        desired results either
1247    o pkg/seaice
1248      - make (default) second order advection a bit less confusing?
1249    
1250    checkpoint58f_post
1251    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1252      to pkg/seaice):
1253      - new routines thsice_map_exf and thsice_get_exf provide the interface
1254      - add an additional formal parameter to thsice_solve4temp
1255    o pkg/exf:
1256      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1257      - correct Stefan-Boltzmann constant
1258      - new parameter for longwave surface emittance
1259      - separate some stuff from exf_bulkformulae into new routines  
1260        exf_radiation, exf_wind
1261      - add new parameters and constants: longwave emissivity for ocean, ice
1262        and snow, evaporation parameters over ice
1263      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1264        either wind from stress or stress from wind
1265    o pkg/thSIce:
1266    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1267    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1268       and THSICE_CALC_THICKN
1269    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1270    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1271      to make debugging easier.
1272    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1273    o pkg/bulk_force:
1274      - clean-up comments and parameters ;
1275      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1276    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1277      generate new output for test-experiment: aim.5l_cs.thSI
1278    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1279      testreport accordingly
1280    
1281    checkpoint58e_post
1282    o SEAICE_CGRID adjoint done
1283    o R_STAR adjoint implemented.
1284      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1285      * need to sort out init. of h0facc, etc.
1286    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1287      to be able to use it in pure forward.
1288    
1289    checkpoint58d_post
1290    o upgrade simple test-experiment to tutorial example:
1291     step.1: duplicate the experiment and (step.2) will remove the old copy.
1292      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1293      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1294      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1295      tutorial_global_oce_biogeo    <- copy of dic_example
1296      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1297      tutorial_plume_on_slope       <- copy of plume_on_slope
1298      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1299      tutorial_global_oce_optim     <- empty for now (David ?)
1300      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1301     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1302    o correct a sign problem in cost_scat.F
1303    o obcs and ptracers: fix boundary conditions for advections schemes
1304      with larger stencil
1305    o thsice adjoint: start
1306    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1307      completeness
1308    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1309      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1310    o ptracers adjoint:
1311      * avoid extensive recomputatations
1312      * fix missing re-init. of gptr (missed by TAF)
1313    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1314      me to turn off the excessive output to STDOUT that this package produces
1315    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1316      and add those terms in Vector-Invariant formulation.
1317    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1318      if the control period (xx_hfluxperiod etc) is 0
1319    o in profiles pkg, clean routines and fix details
1320    o in ecco pkg, reading ssh data:
1321      fix problem in case the model does not start at iter0=0
1322    o fix mnc-pickup/restart for ptracers
1323    o new package prifiles:
1324      code to compute profile-based cost by Gael Forget
1325      (modifs in ecco, ctrl, autodiff)
1326    o Benign bug fix in initialization (spotted by M. Mazloff) of
1327      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1328    
1329    checkpoint58c_post
1330    o adjoint: finish NLFS adjoint and provide reference output in
1331      verification/global_ocean.90x40x15/results_ad_nlfs
1332    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1333      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1334      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1335      with SEAICE_CGRID defined.
1336    o move calendarDumps from "data" to "data.cal" and clean-up the code
1337      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1338    o add useEXF & useCAL flags (for now, set in hard-coded way)
1339    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1340      (were missing in NH mode, and wrong in quasihydrostatic mode).
1341      waiting for Chris updated version of calc_gw to add those CALLs.
1342    o fix bug in quasihydrostatic S/R ;
1343      add a test for this option: global_ocean.90x40x15.qshyd
1344    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1345      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1346    o add on/off flag useOffLine for package OFFLINE
1347    o seaice:
1348      - modify advection so that it works also on the C-grid
1349      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1350        problem in multi-tile runs with C-grid
1351      - add flags for clipping ice velocities and/or masking solver forcing
1352      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1353        C-grid solver
1354      - added a few comments to seaice_diffusion.F
1355      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1356        are now exclusive)
1357      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1358        required re-ordering the code a little:
1359       + make DAIRN global variable (defined in SEAICE)
1360       + move computation of the viscosities eta and zeta into a new separate
1361         routine (because I need to recompute them in seaice_ocean_stress.F)
1362    
1363    checkpoint58b_post
1364    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1365      update output.txt of exp. aim.5l_cs.thSI
1366    o various mnc cleanups and improvements:
1367      + shrink lookup tables by factor of ~4
1368      + better error reporting when running out of lookup space
1369      + able to handle longer path/file names (up to 500 chars)
1370    o adjoint:
1371      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1372      - TBD: "hidden" mom_vecinv recomp. in dynamics
1373    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1374     (allow to differentiate between forcing components using new integer flags:
1375      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1376     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1377    o ecco
1378      - enable trend removal from SSH anomaly obs.
1379    o adjoint
1380      - a fix for PmEpR when #undef EXACT_CONSERV
1381      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1382      - try to fix "hidden" recomp. in forward_step for NLFS
1383        (NLFS seems broken sometimes after I checked it in)
1384    o seaice:
1385     - add c-grid version of the dynamic solver:
1386       + three new routines that are the c-grid substitute lsr, dynsolver
1387         and ostres
1388       + put a few fields that were local to dynsolver into global common
1389         blocks, so that I can move the computation of stresses etc into
1390         seaice_lsr (saves coding but may break the adjoint).
1391     - replace more hardwired parameters by runtime parameters
1392     - add ice masks that mask the rhs of the implicit solvers where there
1393       is no ice (commented out in seaice_dynsolver, because i am not sure
1394       if this works properly), eventually this should replace the clipping
1395       of ice velocities in seaice_dynsolver to +/-40cm/s.
1396    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1397      include it only where its needed
1398    o move balancing of fluxes before the call of external_forcing_surf
1399    o seaice:
1400      - correct units of turning angles (now they are really in degrees)
1401      - move computation of GWATX/Y out of main routine into dynsolver
1402      - initialize GWATX/Y in seaice_init
1403    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1404      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1405    o seaice: add runtime flags for turning angles (default to zero)
1406    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1407      and trend from exf forcing and ctrl control adjustments
1408    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1409      (since checkpoint57x_post)
1410    o change the default rotation period to 86164.s = the Earth rotation
1411    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1412      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1413    o seaice advection: add code for choosing between the default (2nd order
1414      central differences) and multiDim advection schemes provided by
1415      pkg/generic_advdiff
1416    o seaice:
1417      - removed all references to SEAICE_GRID.h fields from
1418        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1419        (cubed-sphere configuration will change a little)
1420      - grid computations in seaice_init are obsolete now.
1421      - cleaned up code a little so that is easier to read (hopefully).
1422      - added new (better?) discretizations of default advection and diffusion
1423        (turn on with SEAICEuseFluxForm)
1424      - replace 1 in 3d global fields by kSurface in growth.F
1425      
1426    checkpoint58a_post
1427    o seaice:
1428      - bug fix in advect.F
1429    o shelfice:
1430      - separate shelfice load anomaly from pload (breaks with time
1431        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1432        Its default is 0., but it may be computed more cleverly from (unknown)
1433        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1434        done offline. A good approximation of the pressure load anomaly is
1435        necessary to avoid large initial adjustment processes underneath
1436        deep-reaching shelfice.
1437      - small fix in ISOMIP shelfice_thermodynamics
1438      - add more sophisticated thermodynamics of Hellmer (1989), this is
1439        now the default
1440      - give a few constants more intuitive names
1441    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1442      if bulk formulae are used in long integration (especially EmPmR). Turn
1443      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1444      if balancePrintMean, the imbalance that is substracted is printed to
1445      STDOUT.
1446    o fix bug (typo) in obcs_apply_eta.F
1447    o add a new package shelfice which enables us to model the circulation
1448      underneath shelf-ice with draughts of hundreds of meters.
1449     - works
1450     - to do: + include improved thermodynamics
1451              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1452                instead of new field kTopC
1453              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1454                instead of new field R_shelfIce and new code in ini_depth.F
1455                and ini_mask_etc.F?
1456              + adjust vertical mixing schemes?
1457    o seaice pkg:
1458     - add a cpp-flag to include a simple formula for a salinity dependent
1459       freezing point of sea water at the surface
1460     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1461       meridional stresses are now different (and hopefully correct)
1462    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1463       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1464       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1465    o pkg/diagnostics: add options and parameters for regional-statistics
1466       diagnostics ; define regions by reading a region-mask from a file
1467       (might add other options later)
1468    o pkg/bulk_force:
1469     - add option and parameters to use AIM surface-flux formulae.
1470     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1471       others forcing fields (defined in PARM05, parameter file "data") are loaded
1472       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1473     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1474     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1475     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1476       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1477     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1478    
1479    checkpoint58
1480    o add "--embed-source" option to genmake2 which, when the supporting
1481      tools can be compiled (as determined by genmake2) will turn on the
1482      embed_files package which then embeds the entire MITgcm source code
1483      (*.[fFhc] + Makefile) used for the build within the executable
1484      - requested by CNH but off by default
1485      - adds a paltry <9MB to the mitgcmuv executable in most cases
1486      - only writes the output when useEMBEDSRC in eedata is true
1487    o clean up 3-dim. relaxation codes:
1488      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1489      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1490      * Thanks to Tom Haine for testing!
1491    
1492    checkpoint57z_post
1493    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1494      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1495    o fix the pickup behavior for obcs in combination with ptracers
1496    o fix a bug in ptracers_external_fields_load
1497    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1498      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1499    o transfered surface NH pressure to eta field (if exactConserv).
1500    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1501         and update lab_sea output.txt file.
1502    o completing 3-dim. relaxation code: additional term
1503         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1504      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1505      * At compile time, in "EXF_OPTIONS.h" set
1506          #define  ALLOW_CLIMTEMP_RELAXATION
1507          #define  ALLOW_CLIMSALT_RELAXATION
1508      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1509          tauThetaClimRelax3Dim = 15552000.0,
1510          tauSaltClimRelax3Dim  = 15552000.0,
1511      * 3 cases:
1512          1) Use a constant-in-time 3-dim. field
1513          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1514          3) Real-time relax. to time-evolving prescribed field
1515    o Adding Laplacian-type smoothness constraint on
1516      initial and boundary (forcing) controls (ic, bc)
1517      * enable at compile-time via
1518        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1519      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1520      * Absolute scale somewhat unclear so far
1521      * no area weighting was included since no other cost term does so far
1522    
1523    checkpoint57y_post
1524    First step for a NLFS adjoint
1525    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1526    o new init. routines for calc_r_star, calc_surf_dr
1527    o still need to deal with ini_masks_etc
1528    o testreport seemed happy
1529    checkpoint57y_pre
1530    
1531    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1532    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1533    o add new offset feature to offline pkg (plus minor cleanup)
1534    o cfc fixes for final year of integration
1535    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1536      be in GCHEM_OPTIONS).
1537    
1538    checkpoint57x_post
1539    o fix testreport Pb in multiple test experiment.
1540    o cleanup our namelist syntax in verification:
1541      - make it more F95 standards compliant (some work still needed)
1542      - allows the vast majority of our tests to work with gfortran
1543    o Non-Hydrostatic:
1544     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1545     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1546    o Allow to apply AB on T,S rather than on AB(gT,gS):
1547     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1548     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1549       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1550     - need a "clever" read_pickup to restart from the other AB formulation
1551    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1552    o remove some unused variables (reduces number of compiler warnings)
1553    o adjoint
1554      * Disable useVariableViscosity for adjoint for time being
1555        (there are a number of extensive recomputations)
1556      * Initialize certain variables needed for adjoint
1557    
1558    checkpoint57w_post
1559    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1560                 fix the singleCpuIO RS version of MDSWRITEFIELD
1561       and add a WARNING if using globalFiles=T with multi-processors.
1562    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1563      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1564    o tracer advection scheme:
1565      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1566       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1567       was not very convenient).
1568      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1569       (further tests needed for the implicit DST & Flux-Limiter schemes).
1570    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1571      and sRef for convenience, handy, when you want to initialize
1572      ptracers in a large domain with a constant non-zero value. Also,
1573      untangle ptracers_init.F a little.
1574    
1575    checkpoint57v_post
1576    o change dome exp. to use variable viscosity in side-drag terms.
1577    o remove all the files from the cfc_offline test since they are now
1578      incorporated into tutorial_cfc_offline which has been producing
1579      identical results for a few days of testing
1580    o add new parameter: sideDragFactor to enable half-slip-side BC
1581      and change side-drag S/R to use viscosity from mom_calc_visc
1582      (can switch back by setting sideDragFactor=0.); affects results at
1583      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1584       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1585    o vorticity & strain are now computed without masking, to account for
1586      no-slip-side BC in variable viscosity calculation ; mask is applied
1587      anyway later on, before computing advection/coriolis terms.
1588    o modify exp4 to test new obcs support for reading from external files
1589      and for passive tracers
1590    o fix behavior of ptracers_monitor when monitor output is written to a
1591      netcdf-file; still not independent of monitor.F (writes in the same
1592      file).
1593    o change default value of tRef (put a uniform, meaningful value for ocean
1594      & atmos) and initialize sRef (was missing, as Martin mentioned).
1595    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1596      to be proportional to enstrophy dissipation length.  Thus,
1597       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1598      This is now consistent with Smagorinsky and with the manual.
1599    
1600    checkpoint57u_post
1601    o OBCS and PTRACERS: add open boundary support for passive tracers
1602      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1603        OB-values from file; this is not different from the way theta and salinity
1604        are treated
1605      - however, Orlanski-radiation conditions are not supported, and the model
1606        will stop if you use pTracers and Orlanski at the same time.
1607      - beefed up the rountine obcs_external_fields_load: now only those open
1608        boundary values are overwritten with values from files for which there
1609        are really files, otherwise the OB-fields remain untouched. This makes
1610        it possible to use different OBs at different ends of the domain (as
1611        with EXF)
1612    o reduce number of exch calls in shap_filt (s2).
1613    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1614      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1615    
1616    checkpoint57t_post
1617    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1618    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1619      same truncation, independent of the face number: affects affects several
1620      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1621    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1622      note that biharmonic viscosity + no-slip was not tested in any experiment.
1623    o fix bug in non-linear free-surf side-drag ; generate new output for
1624      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1625    o make mnc honor the writeBinaryPrec flag for most kinds of output
1626    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1627    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1628      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1629    o add brackets in multi-terms sum to get same truncation, independent of
1630      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1631      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1632    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1633      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1634      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1635      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1636      Suggested values of viscosity parameters found in mom_calc_visc.
1637      Many new viscosity diagnostics available.
1638    
1639    checkpoint57s_post
1640    o Add clearing-house for viscosity calculations, mom_calc_visc and
1641      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1642      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1643      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1644      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1645      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1646      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1647      ViscAhStrain and viscAhTension are now retired.
1648    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1649    o In response to JMC's bug report, genmake2 now ignores any soft-links
1650      that it finds in the *current* directory when searching for files.
1651      Soft-links found in any other source directories will still work as
1652      they did before.
1653    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1654      a C routine to unlimit the stack size
1655    o mnc-ify pkg/aim snapshot vars
1656    o mnc-ify pkg/land as requested by Daniel
1657    o various changes to mnc including:
1658      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1659      - output can now be grouped so that all files within a group
1660          change the ITER portion of their names in lock-step together
1661      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1662          and works with both EXCH1 and EXCH2 (but needs more testing)
1663      - writing works for all verification test cases w/ g77 on Linux
1664    
1665    checkpoint57r_post
1666    o make MNC variable initialization happen earlier
1667    o add diagnostics for (almost) each term of the momentum Eq.
1668    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1669    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1670    o remove MINIMAL_TAVE_OUTPUT option ;
1671      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1672    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1673      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1674    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1675    o add time-dependent SST, SSS control
1676    o cost terms in ecco/ modularized (new cost_generic.F)
1677    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1678    o new infrastructure for seaice model vs. obs misfits in seaice/
1679      * driver from the_main_loop.F is seaice_cost_driver.F
1680      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1681      * gradient check in Exp. 6a of natl_box_adjoint/
1682    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1683      (see README file)
1684    
1685    checkpoint57q_post
1686    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1687    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1688      - bug was reported by Jean-Michel and Ian Fenty
1689    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1690      update exp. cpl_aim+ocn output.
1691    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1692      Needed for high-res. runs with large global files
1693      to be able to limit tapelev size
1694    o Changed some tests for adjoint:
1695      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1696      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1697      * global_ocean.90x40x15/ back to default 3-level checkpointing
1698    o Modifications to enable scripted COMMON to MODULE conversion
1699      * verification/OpenAD/code/ has necessary scripts and description;
1700      * converts, compiles and runs successfully;
1701    
1702    checkpoint57p_post
1703    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1704    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1705      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1706    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1707    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1708      (was already the case for dissipation with mom_vecinv,
1709       and also the case for grad.PhiHyd when staggered-timeStep)
1710      This will allow to put dissipation out-off the AB time-stepping.
1711     Unfortunately, affects truncation error. Update output of exp. that "fails"
1712      (cg2d matching number) and leave the others for later: front_relax(10),
1713      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1714      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1715    
1716    checkpoint57o_post
1717    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1718      (2) its ready to be documented during the 20050801 DocFest
1719    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1720      for ideal_2D_oce and lab_sea on linux_ia32_g77
1721    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1722      in global1x1_tot/code_seaice_adj to access indices 32, 33
1723      (worth another tag)
1724    
1725    checkpoint57n_post
1726    o adding precip control xx_precip 32
1727    o adding swflux control xx_swflux 33
1728    o Replacing 10 forcing penalty cost routines by 1 generic.
1729    o Implementing partitioning in time-mean and variable adjustment
1730      for atmos. state.
1731    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1732  o in natl_box_adjoint:  o in natl_box_adjoint:
1733    * updated: results_bulk/    * updated exp 1 to 10
1734    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1735    o updated global1x1/*_seaice_adj/
1736      to incorporate latest changes
1737    o enable useSingleCpuIO for mdsio vector routines
1738      (applies in particular to tapelev I/O)
1739    o removed inefficient K-loop in all active_file*control*.F
1740    
1741  checkpoint57m_post  checkpoint57m_post
1742  o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)  o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)

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