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revision 1.167 by heimbach, Tue Jun 24 18:27:09 2003 UTC revision 1.1045 by mlosch, Wed Nov 26 15:27:02 2008 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
8    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
9      a still unfixed compiler/optimization bug
10    
11    checkpoint61f
12    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
13      update results of global_ocean.cs32x15.icedyn test.
14    o move getcon.F from model/src to pkg/fizhi.
15    o pkg/exf: add parameter for extrapolation of temp up to the surface
16       and option to prevent negative evap (in bulk_largeyeager04 only).
17    o Prather Advection scheme: fix tracer conservation for divergent flow
18      (e.g., when using NonLin Free-Surface).
19    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
20    o gmredi (Visbeck-variable-K):
21     - add more parameters to Visbeck-variable-K.
22     - use a 5 points average for dSigmaR in Visbeck-K calculation
23       (more "homogenous": same stencil and same weights as in dSigmaH)
24     - update output of ideal_2D_oce experiment.
25    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
26      (#undef REAL4_IS_SLOW)
27     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
28       coordinate variable
29     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
30       (surface forcing fields), removes some of the functionality
31     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
32     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
33       probably not all: copy _RS surface flux fields to RL field before
34       calling DIAGNOSTICS_FILL
35     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
36       real*4 (CALL EXCH_*_RS) versions.
37     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
38       (generate new output).
39    
40    checkpoint61e
41    o gmredi (Visbeck-variable-K):
42      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
43      - change computation of Visbeck-K where Slope > Smax :        
44        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
45        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
46    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
47      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
48    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
49    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
50      does not become too large (to avoid precision problems in implicit-diffusion
51      solver); update ideal_2D_oce output.
52    o pkg ggl90:
53      - in ggl90_cal.F: compute only one set of visc/diff, used to
54        step forward TKE/T/S/momentum
55      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
56        have Prandlt =1)
57    o gmredi (fm07):
58      - add lower limit on Transition layer thickness + lower limit on 1/lambda
59      - allow to set few more params from data.gmredi
60    o pkg ggl90:
61          - add missing sqrt(2) factor in computation of mixing length
62            scale in ggl90_calc.F
63            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
64    
65    checkpoint61d
66    o adjoint modifs
67      - adapt to new field rhoInSitu
68      - allow to revert from StoreDynVars2D, StoreDynVars3D
69        to individual fields
70        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
71    o store 3-D (in-situ) density in commom block (DYNVARS.h)
72     - save 1 rho computation.
73     - no longer modify T & S inland when using down_slope pkg.
74    o gad_som : allow to switch to SOM advection for T & S without corresponding
75      pickup files (using new S/R: MDS_CHECK4FILE).
76    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
77      (for useSingleCpuIO to work in multi-threaded)
78    o pkg/shelfice:
79     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
80       with SHELFICEtopoFile in data.shelfice
81     - move code for reading ice shelf topography and modifying hFacC into separate
82       subroutines of the shelfice package
83     - separate initialisation of "fixed" and "variable" variables
84     - kTopC is not (yet) replaced by kSurfC, although this is possible
85    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
86    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
87      and rename:
88      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
89      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
90    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
91    
92    checkpoint61c
93    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
94      to add mass source/sink of fluid in the interior (3-D generalisation
95      of oceanic real-fresh water flux).
96    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
97    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
98    o new pkg: down_slope
99      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
100      - presently, modify T & S inland (dwnslp_calc_rho.F).
101        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
102      - implementation for ocean in P-coords not tested.
103      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
104    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
105      (to facilitate conversion of oceanic pkg to p-coordinate).
106    o change FIND_RHO to FIND_RHO_2D :
107      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
108    o new pkg: cheapaml
109    
110    checkpoint61b
111    o exch2:
112      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
113      - no longer depend on the order sequence (N,S,E,W).
114      - 3rd exchange no longer needed (tested with 24 tiles).
115      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
116      - exch_UV_A-grid readily available (but not yet tested).
117      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
118      (both are no longer needed) in exch_uv: no effect in forward run; but
119       get truncation error differences with adjoint exch.
120    o exch2:
121     - change index-bounds storage (moved from target to local tile,
122       more intuitive this way) ; rename/remove some variables.
123     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
124    
125    checkpoint61a
126    o exch2/matlab-topology-generator:
127      fix bug in index bounds for N-S internal exchange (hard to tell if this
128      had any effect on the solution).
129    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
130      is exceeded
131    o testreport: modify syntax of awk, so that it works also with
132      awk, and not only with nawk and gawk
133    
134    checkpoint61
135    o autodiff
136      Change default for TAF usage by removing argument '-nonew_arg'
137      This changes TAF subroutine argument list (ordering of active var.)
138      Omission of this flag leads to incompatibility w.r.t. TAMC
139      To restore TAMC-compatibility, need following modifs:
140      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
141      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
142      Tested TAF version is 1.9.22
143      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
144    
145    checkpoint60
146    --->>> This is the last checkpoint for which generating the adjoint
147    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
148    --->>> by default.
149    --->>> Future checkpoints will ommit this flag by default.
150    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
151    o pkg/grdchk: Add gradient check to etan0 perturbations.
152    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
153    o pkg/autodiff: more flexibility in zeroadj.
154      model/src: modifying do_oceanic_phys.F accordingly.
155    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
156    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
157      special setup of gmredi for which the adjoint is stable
158      enough for parameter optimization.
159    o bridging the gap between eddy stress and GM.
160      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
161          along with a change in CPP option (now ALLOW_EDDYPSI).
162      -> when using GM w/ GM_AdvForm:
163          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
164          is applied either in the tracer Eq. or in momentum Eq.
165          depending on data.gmredi (intro. GM_InMomAsStress).
166      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
167      The key modifications are in model/src/taueddy_external_forcing.F
168      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
169    
170    checkpoint59r
171    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
172      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
173      fix option to read coriolis(@ cell-corner) from files with CS-grid.
174    o pkg/mnc: add some attributes to standard 1D-coordinate variables
175    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
176      mass points, when using mnc for output
177      - add runtime parameter (missing_value, missing_value_int) to override
178        default (which is the value of getcon('UNDEF'))
179    o pkg/mnc: prepare mnc for the actual use of missing values with the
180      diagnostics package: small fix in mnc_cw_readwrite.template and more
181      initialisation of never used fields
182      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
183      versions
184    o pkg/thsice/thsice_ini_vars.F added default initial values so that
185      thermodynamics sea ice solver does not blow up when some initial fields
186      are missing.
187    o move from external_forcing_surf.F to ini_forcing.F
188      the p-coord. hack consisting in using pLoad to set phi0surf ;
189      update output of tutorial_global_oce_in_p (affected @ truncation level).
190    o Freshen up a bit hs94.1x64x5, notably:
191      remove rotationPeriod and tRef=5*0. (adjoint only), and add
192      exactConserv=.TRUE.
193    o pkg/generic_advdiff:
194      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
195      applies to files where Temperature & Salinity 2nd Order moments are used.
196    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
197      this uses a dynamically allocated internal state data structure
198      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
199      and requires a fortran 90 compiler
200    
201    checkpoint59q
202    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
203       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
204    o Refresh tutorial_global_oce_biogeo, notably:
205      - change bathymetry (put back seamounts in ACC, use hFacs)
206      - change EOS (POLY3 --> JMD95Z)
207      - use Bryan-Lewis vertical diffusivity
208      - use multidimensional advection
209      - remove old virtual virtual in dic pkg, now done through ptracer pkg
210      - change a couple of parameters in dic pkg
211    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
212    o pkg/obcs: change default to OBCSfixTopo = .true.,
213      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
214      - replace "debugMode" with "debugLevel .GE. debLevB"
215    o implementation of TAF directives for gchem,cfc,dic
216    o remove "exp5" (replaced by tutorial_deep_convection).
217    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
218      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
219      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
220      --> changes results in exp4, seaice_obcs
221    o tutorial_deep_convection :
222      update the set-up and increase resolution and domain size ; start
223      from pseudo initial conditions = output at t=120mn in order to see
224      something happening when running testreport.
225    o pkg/seaice: add os7mp as an advection scheme
226                  add check for advection schemes
227                  add a flag for restoring T and S underneath sea ice
228    o pkg/my82: add netcdf-support and diagnostics
229    o thsice pkg:
230      - Now hsMax limits snow height by turning it into ice following
231        flooding scheme (and now conserving energy)
232      - Slight rewriting of the formula in thsice_calc_thick.F
233      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
234      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
235    
236    checkpoint59p
237    o gchem / dic / cfc :
238      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
239      - add new parameter files: "data.dic" & "data.cfc" ;
240      - various re-arrangement in initialisation & header file ;
241      - fix tutorial_global_oce_biogeo for multi-threaded test.
242    o pkg/dic: test for "pickup_dic" file when restarting ;
243      if no pickup-file, can restart with a re-initialised pH (same as it did
244      before) providing pickupStrictlyMatch is set to False.
245    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
246      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
247    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
248      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
249    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
250     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
251       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
252    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
253       scheme to use for vorticty-term ;
254     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
255       (with default selectVortScheme, return to original discretisation)
256     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
257    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
258    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
259      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
260      also fix diagnostics VISCAHW & VISCA4W.
261    
262    checkpoint59o
263    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
264    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
265      move a few statemens out the main loop into separate loops
266    o pkg/shelfice:
267      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
268        (kg/m^2/s), does not break tests, because in verification/isomip,
269        rhoConstFresh=rhoConst (by accident)
270      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
271      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
272        new file model/src/seawater.F, so that they are available for all pkgs.
273      - convert potential temperature into in-situ temperature. This changes the
274        isomip tests => update tests
275    o add a flag writePickupAtEnd (default=true) to be able to suppress
276      writing a pickup at the last timestep
277    o tools/mpack-1.6 :
278      - disable automake (not working) and autoconf (not needed).
279      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
280        also cleaner with much less compilation warnings.
281    o pkg/profiles:
282      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
283      (for "less than 32 characters name" compiler requirement)
284    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
285      conditions that have a different sampling frequency than S/T/U/V obcs
286    o pkg/diagnostics (stats-diags):
287      - fix global Min/Max in case 1 processor get only empty tiles
288    o genmake2: replace (4 times)
289         make genmake_tc_1.o >> genmake_warnings 2>&1
290      with
291         COMM="$CC $CFLAGS -c genmake_tc_1.c"
292         echo $COMM >> genmake_warnings
293         $COMM >> genmake_warnings 2>&1
294      to make genmake2 always see the value of CC as specified in the optfile.
295    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
296      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
297      - modify verification advect_cs test to test SOM-advection on CS-grid.
298    o pkg/ctrl:
299      - Rewrite of ctrl_map_ini_ecco.F,
300        introducing a generic routine (ctrl_map_ini_gen.F).
301      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
302    
303    checkpoint59n
304    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
305      number in dedicate array "hdiag":
306      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
307        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
308      - many small changes (integer format) for large number of diagnostics
309      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
310        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
311    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
312      usingSphericalGrid, this allows to define the rotated grid coordinates
313      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
314      geographical coordinates according to the inverse of the rotation defined
315      by the Euler angles, so that Coriolis parameter and online-interpolation by
316      exf works with the geographical coordinates on XC/YC/XG/YG.
317      Naturally, this feature does not work with all packages, so some
318      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
319      profiles), because there the coordinates are assumed to be regular
320      spherical grid coordinates.
321    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
322      - introduce isopycnal diffusion coefficient control.
323    o tools/adjoint_options:
324      - additional control vector components.
325    o pkg/mnc: have mnc create marginally meaning full coordinate variables
326      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
327    o pkg/mypackage:
328      - add example of read/write pickup for state-var ;
329      - add entry points to the main code for state-vars diags & write-pickup.
330    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
331      transitions for useExfYearlyFields
332      - add new subroutine that determines the file to read from for
333        use*YearlyFields = .TRUE. and .FALSE.
334      - add a verification experiment to global_with_exf that tests
335        useExfYearlyFields with USE_EXF_INTERPOLATION defined
336    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
337      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
338      subroutines (which could be generated from a template, because they are
339      almost identical), for now they are included in obcs_prescribe_read.F for
340      simplicity
341    o pkg/exf:
342      - add a little more diagnostic to exf_interp_read (in analogy to
343        mds_read_field, can be turned off with debugLevel < debugLevA=1)
344      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
345        ugly but fast by unrolling short inner loops, inserting a unroll=8
346        directive in routine lagran, and splitting a loop and making do while the
347        outermost loop (the latter requires the intoduction of index arrays)
348    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
349    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
350      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
351    o verification/seaice_obcs: updated for restart test and latest options
352    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
353      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
354      for now this is only available for the C-grid code and also within
355      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
356    
357    checkpoint59m
358    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
359      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
360    o gad_som : fix flux output (& diagnostics) to have same units as other  
361      advection scheme fluxes (was previously multiplied by deltaT).  
362    o added verification/seaice_obcs both to test seaice open boundaries
363      and to provide an example matlab scrpt for generating them
364    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
365    o pkg/salt_plume: clean up salt_plume_frac.F to
366      remove redundancy in PlumeMethod 1 and 4
367    o pkg/kpp: added saltplume diagnostics
368    o pkg/obcs and pkg/seaice:
369      - do not set uice and vice to zero when OB*icefile are unspecified
370      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
371      - moved seaice tracer obcs after call to seaice_growth
372    o pkg/salt_plume: added various options for salt plume depth
373      criterion and for vertical distribution of the salt
374    
375    checkpoint59l
376    o pkg/ptracers: new version of ptracers pickup:
377      read meta file and write only fields which are needed to restart.
378      ( same logic as main pickup file ; also using pickupStrictlyMatch )
379    o pkg/seaice:
380      - add timescale for melting due to warm mixed layer as a means of
381        setting SEAICE_availHeatFrac more conveniently
382      - add a CPP-flag/runtime parameter check for flooding algorithm
383      - reformulated availHeat in seaice_growth.F to be independent of AREA
384    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
385      unit changes
386    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
387    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
388      SX vector computer.
389    o pkg/seaice:
390      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
391        seaice forcing fields can now be read only through pkg/exf
392      - removed some unused halos
393    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
394    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
395      or U/VICE from U/VWIND before computing U/VSTRESS
396    
397    checkpoint59k
398    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
399      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
400    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
401      all experiments pass when compile with un-initialised var. checking option.
402    o added pkg/salt_plume
403    o script to test restart (for now, in MITgcm_contrib/jmc_script)
404    o pkg/seaice: new read/write pickup version.
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: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
408    o lab_sea.hb87: modify the domain & update output.hb87.txt :
409      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
410      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
411      process. Fixed here by closing the domain at the Northern boundary.
412    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
413    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
414      a set of consecutive levels in/from a 3-D array.
415    o pkg/ptracers:
416      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
417      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
418    
419    checkpoint59j
420    o in pkgs: dic, obcs, offline, rbcs:
421      standard way to compute coeff. for time interpolation between 2 time reccords
422      which retains full precision (& make results less dependent on compiler).
423      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
424    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
425      packages instead of reading ice cover and wind speed separately
426    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
427     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
428      to allow to compile customized code before the update)
429    o cleaning-up:
430      - fix CPP instruction syntax in pkg/obcs
431      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
432        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
433      - fix some threads issue in IO parts.
434    o pkg/dic:
435      - add tons of "_d 0" (--> much better testreports !)
436       and then update outputs of tutorial_global_oce_biogeo
437    o pkg/mom_fluxform:
438      add a special version of momentum advection intended to conserve momentum
439      next to a bathymetry step or a coastline edge. (default = off = #undef)
440    o new read/write pickup version:
441      - for now, only implemented for main (mdsio) pickup file.
442      - write out only what is needed to restart; merge pickup_nh , pickup_ph
443        and main pickup together.
444      - read meta file; read only what is needed to restart; stop if a field
445        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
446        if it make sense (even if the restart is not perfect).
447      - if no meta file, assume that pickup to read corresponds exactly to
448        a pickup that would currently be written.
449      - read pickup written in the old format (until checkpoint59i) if it
450        recognizes an old meta file (no field-list).
451      - add a meta file in exp. which starts from a pickup: 2 cases:
452        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
453         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
454        b) a meta file describing the content of the associated pickup file
455         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
456    o pkg/mdsio & pkg/rw:
457      - new routine to read a meta file ; new set of routine to read
458        Multiple-fields file (with meta file).
459    o added open boundary conditions capability for seaice
460        HSNOW, HSALT, UICE, and VICE
461    
462    checkpoint59i
463    o adjoint:
464      * fix multiDimAdvection adjoint
465        (partial recomputation problem by TAF for fVerT(:,:,kDown)
466        and comlev1 size definition (maxpass vs. max. number of tracers)
467      * verification/global_ocean.90x45x15 adjoint now tests
468        NLFS and multiDimAdvection using DST3 (=30)
469      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
470    o pkg/kpp: add "_d 0" to real constant (if missing);
471      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
472      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
473    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
474      for internal parameters related to restart process (formerly from PARAMS.h)
475      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
476    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
477      as argument. (only atm2d & obcs write_pickup have not yet been updated)
478    o pkg/monitor:
479      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
480      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
481      - account for deep Atmosphere factor and density factor (anelastic)
482    o added open boundary conditions capability for seaice HEFF and AREA
483    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
484      thermodynamics
485      - requires a little reorganization, which affects the testreport results
486        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
487        so that now the conservative form is tested
488      - add a few comments
489    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
490    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
491    o add new diagnostics to seaice: advective, diffusive fluxes (only for
492      multidim-advection, for scheme 2 they are not filled) and transports,
493      thermodynamic growth rates
494    o change units of EmPmR (inside the code, + within coupling interface)
495      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
496      Affects results @ truncation level (cg2d match) and update output of
497       experiments: lab_sea(6), global_ocean.90x40x15(10),
498      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
499      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
500      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
501      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
502    
503    checkpoint59h
504    o pkg/exf:
505      - improve vectorization by moving if-statement out of loops in
506        exf_mapfields, exf_radiation
507      - exf_bulkformulae.F: introduce 2D fields and vectorize code
508    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
509    o testreport:
510      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
511        monitor & update offline_exf_seaice exp. output.
512      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
513    o pkg/seaice:
514      - bug fix in the evp solver: boundary conditions were affected be
515        masking of zMax/zMin (changes results)
516      - minor bug fix in boundary conditions in seaice_calc_strainrates
517        (changes results for no_slip)
518      - seaice_lsr.F: make interpolation of eta dependent on boundaries
519      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
520      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
521        stress formulation and no-slip boundary conditions
522    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
523      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
524    o pkg/seaice: a first HSALT time stepping equation has been checked in
525    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
526      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
527      without requiring DO-IF statements
528    o pkg/thsice:
529      use continuous power-law function for partition of energy between lateral
530      melting/freezing and thinning/thickening ; old code using step function
531      still available with #undef THSICE_FRACEN_POWERLAW
532      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
533    o testreport: change AD testing : check against results/output_adm.txt
534      using same scripts as for forward test.
535    
536    checkpoint59g
537    o adjoint testing: in preparation for changing testreport:
538      - output format: cost and grad written on separated lines
539      - ad output results in directory "results" (instead of "results_ad")
540    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
541    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
542    o pkg/ecco: allow user defined cost function contributions
543    o testreport:
544      Allow to choose (per experiment) the list of tested output variables
545       and the main variable (used to issue a pass/FAIL ) ;
546      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
547      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
548      Also modify printing of summary:
549       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
550       b) echo the list of tested variables in the individual summary.txt of
551          each experiment.
552    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
553      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
554      (but still depend on the tile decompostion of the domain).
555    o pkg/seaice: change a discretization detail to make the B-grid code
556      "more symmetric". This change is likely to remove all "ridges/leads" that
557      where quasi-aligned with the grid in B-grid solutions. It may also be
558      the solution to the stress coupling issues with the B-grid.
559    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
560      remove .cvsignore from input dir. (since testreport no longer run here).
561    o pkg/thsice:
562     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
563     - fix reshaping of sea-ice just after advection:
564       melt all the ice only if ice-volume is too small.
565     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
566       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
567     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
568    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
569      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
570    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
571      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
572      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
573      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
574      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
575      -> update output.txt
576    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
577     this affects truncation error: -> update output.txt of exp:
578      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
579      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
580    
581    checkpoint59f
582    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
583    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
584      a bounded range (in forward mode)
585    o pkg/ecco, ctrl, autodiff and mom_common:
586     internal parameter controls, completements of implementations
587    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
588    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
589      (not seem any difference in testing results).
590    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
591       at face corners.
592    o pkg/generic_advdiff:
593     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
594      loop range indices for computing vertical advection tendency
595      and do the calculation in the interior only (no overlap) ;
596      for now, only implemented for SOM advection (to save CPU time).
597     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
598    o exch2 adjoint
599      First set of changes:
600      - add exch2 hand-written adjoint templates
601      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
602        This will require cleanup in pkg/autodiff/*.F
603        (changed routines currently kept separate in verif. code/)
604      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
605        that used to hide exch2 or cubed-sphere specific code
606        (commented via 'cph-exch2')
607    o pkg/seaice
608      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
609    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
610       output of global_ocean.cs32x15.thsice .
611    
612    checkpoint59e
613    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
614      for B-grid vector (not yet tested) and C-grid vector (<- only used
615      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
616    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
617      (#ifdef ALLOW_SALT_PLUME)
618    o gather_2d/scatter_2d: removed halo regions
619    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
620      scheme and the corresponding test case (under front_relax dir). For now,
621      only available with Skew-flux form and not yet tested in realistic set-up.
622      adjoint: store directives updated, but gradient checks deteriorated,
623      so maybe GM/Redi adjoint is now broken.
624    o seaice adjoint
625      * add AREA, HEFF, HSNOW as control variable
626        (should not change lab_sea results)
627      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
628    o pkg/seaice:
629      * added computation of saltFlux in seaice_growth;
630        For time being, sea ice salinity is assumed constant
631        contribution of snow flooding to freshening of sea ice is neglected.
632        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
633        defaults to 0.0 in order to maintain backward compatibility.
634        Typical values for SEAICE_salinity are 4 to 10 g/kg.
635      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
636      * added SEAICE_availHeatFrac, which specifies fraction of surface level
637        heat content used to melt or grow ice
638      * commented out cap of HICE: it helps keep ice thinner
639      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
640      * applied OBCS T/S mask to HEFFM sea ice mask
641    
642    checkpoint59d
643    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
644     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
645     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
646    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
647     and change default value of parameter "GM_Small_Number";
648     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
649       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
650       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
651    o pkg/ecco: cost function when applying pkg/smooth to controls
652    o pkg/ctrl: add forcingPrecond run time parameter
653    o pkg/seaice:
654     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
655     - fix bug in metric terms of u-equation in LSR solver (implicit part),
656       changes verification/lab_sea
657     - rearrange implicit part of u-equation in LSR solver to make it easier to
658       read, understand, and debug. This causes changes at the truncation level.
659     - fix (serious) bug in the boundary conditions (sign error in the implicit
660       part) of the LSR solver. Changes all LSR results.
661     - fixed problem with HSNOW initialization to avoid thick snow when AREA
662       is initilized with small values - does not change lab_sea results.
663     - added HsnowFile initialization capability
664    o pkg/smooth: addition to model/src and pkg/ctrl so allow
665     initialization of pkg/smooth and application to control vector
666    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
667    o dependencies: pkg/profiles requires pkg/cal
668    o pkg/profiles:
669     - added option ALLOW_PROFILES_GENERICGRID
670         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
671         that interpolation information (grid points and coefficients) is provided
672         within the netcdf input files.
673         -> sample matlab scripts can be found in MITgcm_contrib/gael
674         that allow you to prepare netcdf input files.
675     - also modified: cleaner include statements, cleaner error print statements,
676       cleaner stops when error, and more tests of the netcdf input files consistency.
677    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
678    o pkg/seaice:
679     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
680       requires a new routine: seaice_diagnostics_fill.F
681     - make sure that seaice does not move if not forced (pressure replacement
682       method, Hibler and Ip, 1995), changes results
683     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
684     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
685       It is turned off by default (=-1.), because it changes the results.
686     - make it possible to read AREA from a file, too.
687    
688    checkpoint59c
689    o add S/R and diagnostics for oceanic mixed-layer depth
690    o move GMRedi call after all vertical mixing schemes (including KPP)
691    o pkg/thsice:
692     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
693      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
694    o pkg/obcs:
695     - bug fix for balance code
696    o pkg/seaice:
697      - allow values of SEAICE_elasticParm > 1
698      - add new parameter SEAICE_evpTauRelax as an alternative
699        to SEAICE_elasticParm
700      - make lsr boundary conditions free slip (by default), changes result
701      - add code for no slip boundary conditions for lsr
702      - set minimum of zeta to zero (and not 4e8) (changes results)
703      - add a cap on AREA after advecting AREA if seaice_growth is not called
704    o change calculation of Visbeck K:
705      - no longer depend on tapering scheme; instead, compute slope (limited
706        by GM_maxSlope). this is equivalent to what was comuted before with
707        clipping or linear tappering.
708      - fix vertical averaging (wrong by 1/2 level)
709      - leave the old version (but will not be maintained) within
710        #ifdef OLD_VISBECK_CALC / #endif
711      - update output of exp. ideal_2D_oce
712    o change error catch in calc_r_star to improve vectorization
713    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
714      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
715    o adjoint:
716      Re-organized adjoint checkpointing according to Matt Mazloff
717      (but with modifs/completions/cleanups)
718      Storing is now bundled into large arrays to optimized I/O
719      (and second step in cleanup of the_main_loop)
720    
721    checkpoint59b
722    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
723      - export/import (between ocean & coupler) fields needed for ocean DIC.
724    o pkg/seaice:
725      - get rid of three more exchanges seaice_calc_viscosities (required
726        different loop boundaries in seaice_lsr and seaice_ocean_stress)
727      - bug fix in seaice_ocean_stress (update of lab_sea required)
728      - reduce loop boundaries to necessary minimum also in seaice_evp
729      - go back to the old way of computing deltaC/Z as the adjoint likes that
730        better
731    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
732      passive tracer to an Age Tracer) + update output.txt
733    o pkg/exf:
734      - implement A-grid / C-grid selection for wind-stress input files.
735      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
736      for now, in exf_bulk_largeyeager04.F only :
737      - change implementation for case where windspeed + 2. components wind-stress
738        are read-in. AND use rhoConstFresh to convert evap.
739    o pkg/seaice:
740      - use correct EXCH_UV for wind-forcing (on A-grid).
741      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
742        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
743    o pkg/exf:
744      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
745      EXF_INTERPOLATION:
746      - merge global_with_exf/code version of exf_interp_read.F
747        to the main code ;
748      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
749        reading the file ; Important: This options needs to be defined to recover
750        previous code.
751        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
752      - no longer loose real*8 precision along the way when using exf_iprec=64.
753    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
754      - change discretisation of evp-solver in order to avoid another exchange
755        (changes lab_sea) and clean up a little
756      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
757        help the adjoint (this also changes the results slightly)
758      - add a few "_d 0" where they had been missing in seaice_evp.F
759      - cleaning up: remove unused seaice_calc_rhs.F
760    o pkg/exf: some cleaning-up:
761      - change various "constants" into runtime parameters
762      - cleaned-up Large&Yeager04 routine which should eventually
763        replace exf_bulkformulae.F (changed names of S/R and CPP)
764        and merged various ALLOW_ATM_WIND options
765     only used with thsice pkg (in thsice_get_exf.F):
766      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
767        which are used when useStabilityFct_overIce=TRUE (= the default)
768      - change default values of ice & snow emissivity and scale downward LW
769        by ice & snow emissivity.
770    o pkg/thsice:
771     fix few little problems, in thsice_calc_thickn.F:
772      - growth vertically (and not laterally) if iceFrac == iceMaskMax
773      - melt only laterally if hIce < hThinIce (as the comments say)
774      and in thsice_extend.F:
775      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
776      - start to form ice as soon as the minimum ice-volume is reachable.
777     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
778      and cpl_aim+ocn
779    o pkg/kpp
780     - move computation of surface related input fields to KPP into a new
781       subroutine kpp_forcing_surf.F
782     - remove wrong (within bi,bj loops) EXCH calls.
783     - little cleaning (add argument myThid in last position, cvs header ...)
784     - for now, fix conservation problem by exchanging KPPviscAz (may not
785       be the best fix)
786    o pkg/seaice
787     - check for inconsistent evp parameter/cpp-flag combination
788     - remove leftover errIO flat for obsolete name list error handling
789    o OpenAD
790     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
791    
792    checkpoint59a
793    o pkg/seaice: some parameter clarifications and a little bit of clean up
794    o pkg/thsice: rename run-time parameters:
795       himin       -> hIceMin
796       himin0      -> hThinIce
797       hihig       -> hThickIce
798       i0          -> i0swFrac
799       transCoef   -> bMeltCoef
800       frac_energy -> fracMelting
801      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
802       with default values (for now) that do not change the results.
803      remove old version of thsice vars advection in pkg/seaice.
804    o in FFIELDS.h:
805      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
806      - make pLoad & sIceLoad always available (but still only used if
807         ATMOSPHERIC_LOADING is #define).
808    o pkg/kpp: replaced _KPP_RL with _RL
809    o bug fixes for vertical diffusivity computations when both KPP and
810        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
811        are no longer updating the vertical diffusivity array
812        (passed as argument) but are (re-) setting those arrays.
813    o pkg/seaice: fix bug in evp solver, while doing that
814      - change (improve?) discretization of stress computations for both
815        cgrid-lsr and evp solver
816      - add a new routine to compute strain rates
817      - the above changes lab_sea results
818      - add no slip conditions for evp solver (off by default), lsr-version
819        may follow
820      - fix exchange for shear at Z-points (does not change lab_sea)
821      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
822        (to force the user to pick a time step since there is not "safe" way
823        of choosing it)
824      - add principal stress diagnostics
825      - rearrange fields for evp a little to avoid having to call a: too many
826        exchanges and b: exchanges for stress trensor components which we do
827        not have.
828      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
829        of evp, complete rewrite for lsr case (latter is does not yet work
830        in all cases)
831    o pkg/kpp: add code to have mixing in shelf ice caverns
832      - add myThid to all kpp routines (long overdue)
833    
834    checkpoint59
835    o pkg/exf:
836      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
837        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
838      - move exf header files from lower_case.h to UPPER_CASE.h ;
839        add missing cvs Header & Name
840      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
841      - add namelist param. selectStressGridPosition, exf_monFreq
842      - retire many _CLIM routines, and remove data.exf_clim
843        + params moved to data.exf
844        + climsst, climsss now handled by exf_set_gen, i.e.
845          climss?period=0 refers to constant field,
846          climss?period=-12 to monthly forcing
847      - split up namelists in data.exf
848    o pkg/seaice:
849      - remove seaice_exch and seaice_exch_uv
850      - remove superfluous exchange of theta
851      - add myThid to seaice_budget_ocean/ice
852      - add new interface for atmospheric wind forcing (C-grid only)
853        + new routine
854        + two new field (taux, tauy for stress over ice)
855        + removed one global field (DAIRN) for C-grid case only
856    o pkg/thsise
857      - 2nd set of modifs for thsice adjoint in conjunction with exf
858    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
859    
860    checkpoint58y_post
861    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
862      vertical diffusivity, similar to that in MOM4; turned on using
863      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
864      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
865    o Added capability for 3D specification of background vertical diffusion
866      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
867      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
868      "data" file that contains the 3D vertical diffusivity coefficients.
869    o ice dynamics (pkg/seaice) with thsice thermodynamics:
870      - add code within pkg thsice to advect & diffuse sea-ice fields
871      similar to (and will replace) what has been added in  seaice_advdiff.F,
872      but: - conserving Mass, Heat & Salt.
873           - better when using non-linear advection scheme (not yet fully tested)
874           - can also be used in atmospheric set-up (for now, only the diffusion).
875    
876    checkpoint58x_post
877    o IO option for global-file compact format:
878      - add options when generating topology (utils/exch2/matlab-topology-generator)
879      - add I/O capability (pkg/mdsio).
880      - adapt utils/matlab/rdmds.m to read this format.
881      for now long-line format not yet supported by pkg/mdsio (& exch2).
882    o shelfice: add a few diagnostics
883    
884    checkpoint58w_post
885    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
886      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
887      (and replace horiVertRatio in NH code).
888      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
889                         and tutorial_plume_on_slope (sensitive to truncation)
890    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
891      directly to drive seaice model (C-grid only)
892    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
893     - reintroduce computation of wind from stress,
894     - compute tau (in exf_bulkformulae.F) from windstress averaged to
895       mass points to avoid tau = 0
896     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
897    o rdmnc.m: make it work with "global" files created with gluemnc
898    o rdmnc.m : some improvements in dealing with singleton dimension
899      (tested on all testreport mnc output files).
900    o genmake2: disable pkg/profiles if netcdf test fails.
901    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
902    o move call to cal_readparms up to make calendar parameters/variable available
903      to all packages
904    
905    checkpoint58v_post
906    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
907      useDynP_inEos_Zc tested.
908    o pkg/exf: changes to properly interpolate/mask/scale initial fields
909    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
910      and portions thereof.  See read_cs.txt for description and examples.
911    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
912      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
913      following the great-circle arc between those 2 points.
914    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
915      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
916    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
917     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
918     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
919     - still needs work (not working with some options ; efficiency to improve)
920       and serious testing.
921     - use this scheme for temperature & salinity in 2 advection test exp.:
922       advect_xy & advect_xz, respectively.
923    
924    checkpoint58u_post
925    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
926    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
927    o testreport: add option "-skipdir" to skip some test.
928    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
929      momentum calculation.
930    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
931    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
932      remove checkpoint.F and the_correction_step.F (no longer used);
933      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
934    o add option (linFSConserveTr) to correct for tracer source/sink due to
935      Linear Free surface
936    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
937    o pkg/thsice: fix reading mnc-pickups
938    
939    checkpoint58t_post
940    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
941    o pkg/mdsio:
942     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
943       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
944       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
945     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
946     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
947       either MDS_READ_FIELD or MDS_WRITE_FIELD )
948     - new S/R (to replace MDSWRITEMETA), which allows to write more
949       informations (variable names, time ...) to meta files.
950     - modify rdmds.m to give back the meta file content.
951    o pkg/diagnostics: change vertical interpolation to be safer, and more
952       flexible (define p-levels to interpolate to in data.diagnostics);
953      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
954       diagnostic pointer.
955    o pkg/seaice: more cleaning up of seaice_growth, added many comments
956    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
957    o fix multi-category seaice:
958     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
959       SEAICE_MULTICATEGORY
960     - fix short wave heat flux
961    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
962       and allow to use EVP solver. Change forward lab_sea: test both EVP
963       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
964    o Initial check-in of lab_sea adjoint
965      (very similar to natl_box_adjoint/code_seaice)
966      * used C-grid and EVP solver
967      * used KPP, GM/Redi
968      * uses inAdExact=.TRUE.
969      * gradient checks fail for both ADM and TLM
970        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
971        f.d. gradients actually seem more problematic than ADM, TLM gradients;
972        issue is related to forward mismatch between g77 an ifort
973    o pkg/seaice: overhaul of thermodynamics
974     - growth.F and groatb.F are replaced by new routine seaice_growth.F
975     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
976     - move a few global fields out of SEAICE.h into seaice_growth.F and
977       make them 2D (FICE/QNETO/ ...)
978     - remove FO (it is the same as QNETO)
979     - introduce a few local fields to avoid modifying external fields such
980       as atemp, etc.
981    
982    checkpoint58s_post
983    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
984      changed exf_set_gen.F so that
985        genperiod=0 means input file is one time-constant field and
986        genperiod=-12 means input file contains 12 monthly means
987    o CG2D: use pre-computed solver main-diagonal (stored in common block);
988      this affects truncation error ; generate new output file for exp. which
989      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
990        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
991        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
992        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
993        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
994        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
995    o start implementation of deep-atmosphere and anelastic formulation
996    o verification: remove 2nd copy of input files and use script "prepare_run"
997      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
998    o mom_common/vecinv/fluxform: fix a few initialisation isssues
999    o profiles: fix for multithreaded case
1000    
1001    o diagnostics: rename few diags:
1002      s/'PRESSURE'/'RCENTER '/g
1003      s/'TICE    '/'oceFreez'/g
1004      s/'TAUX    '/'oceTAUX '/g
1005      s/'TAUY    '/'oceTAUY '/g
1006      s/'SWFLUX  '/'oceQsw  '/g
1007      s/DIFx/DFxE/g
1008      s/DIFy/DFyE/g
1009      and add few ocean-forcing diagnostics:
1010      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1011    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1012      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1013      as actual snow thickness.  It now refers everywhere to effective snow
1014      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1015    
1016    checkpoint58r_post
1017    o modifications to pkg/seaice/growth.F, which change results of
1018      lab_sea experiment: fixes pertain to melting snow over open water, to
1019      masking EVAP under sea ice, and to using the correct AREA variable for
1020      computations of EVAP, PRECIP, HSNOW, and GHEFF
1021    o add ability to read bathy, salt, and theta using MNC (off by def)
1022    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1023      both are turned off by default and do no change any results
1024    o seaice advection with pkg/thsice: a step toward the use of non-linear
1025      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1026    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1027      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1028      in natl_box (affects results @ truncation level: update output.txt)
1029    o multi-threading and IO:
1030      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1031      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1032        (needed to work with SingleCpuIO): tested in all verif. exp.
1033    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1034      affects the results (but none of the verification test uses this scheme).
1035    o Adding some pkg/diagnostics capability to pkg/seaice
1036      (will certainly be subject to changes)
1037    o ctrl: adding new control variables:
1038      lwflux, lwdown, evap, snowprecip, apressure, runoff
1039    
1040    checkpoint58q_post
1041    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1042      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1043      high_res_cube configuration by 4% on Columbia.
1044    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1045      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1046      dynamical allocation (seems to work in multi-threaded).
1047    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1048      single CPU io) so that TAF does not have to see EESUPPORT.h
1049    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1050    
1051    checkpoint58p_post
1052    o obcs: stop if obcs is used with useCDscheme = .true.
1053    o shelfice:
1054     - fix a sign error so that no slip at shelfice interface works
1055     - remove stop for combination non-hydrostatic code and shelfice. That does
1056       not mean, that the results are correct, but at least they are numerically
1057       stable
1058    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1059    o added adjoint exch routined for all exch*3d* routines
1060      and updated flow directives
1061    
1062    checkpoint58o_post
1063    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1064      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1065    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1066      and clean-up reading/writing of pickup files.
1067    o fix local version of read/write pickup (NH part) in rotating_tank/code
1068    o simplify EXCH interface:
1069     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1070     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1071    o added the regrid package
1072    o shelfice:
1073     - add a simple boundary layer scheme to reduce noise
1074     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1075    
1076    checkpoint58n_post
1077    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1078       local variable (not in common block).
1079    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1080      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1081      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1082        to work with SingleCpuIO.
1083    o add "_d 0" to real constant of pkg/cfc subroutines ;
1084       update exp. cfc_exemple & tutorial_cfc_offline output files.
1085    o multi-threading and IO:
1086      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1087        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1088      - barrier before and after reading.
1089      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1090      - avoid using MDS_WRITELOCAL for LAND pkg output.
1091      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1092        common-block variables ; Allows multi-threading with master-thread IO.
1093    o change default MAX_NO_THREADS from 32 to 4 ;
1094      and stop cleanly when MAX_NO_THREADS is too small.
1095    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1096    
1097    checkpoint58m_post
1098    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1099       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1100    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1101       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1102       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1103    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1104        add MITgcm_tutorials (= code + all the tutorials)
1105    o ecco, option to compute cost for total ssh (mean+anom)
1106    o consistent with addition of ptracer and ssh in pkg/profiles
1107    o profiles: adding ptracer and ssh
1108    o testreport: change multi-test output-file name
1109      (from output.txt.{name} to output.{name}.txt)
1110    o profiles: now ok for mutli-tiles case
1111    o seaice: add 4 parameters for different advection schemes for area,
1112      (effective) seaice thickness, enthalphy, and snow height. Their default
1113      is the standard parameter SEAICEadvScheme
1114    o calc_gw:
1115     - add cosFacU in zonal viscous flux (harmonic.visc.).
1116     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1117       of tutorial_plume_on_slope.
1118    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1119    o calc_gw: true flux-form, account for horizontal grid spacing.
1120      update rotating_tank results, but not plume_on_slope (affected at
1121      truncation level, 11 digits).
1122    
1123    checkpoint58l_post
1124    o calc_gw:
1125     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1126     - remove side-drag for now (need to fix it); update plume_on_slope results.
1127     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1128    o commit code to make SST/SSS weights spatially variable
1129      (based on either variable in-situ or variable initial T/S weights)
1130    o pkg/ecco:
1131      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1132        now based on horizontally varying weights wthetaLev, wsaltLev
1133      * cost_averagesflags now returns year indices in addition to day, month
1134      * sflux balance is performed on annual basis
1135        (sflxumm, sfluxmm2, bal_sfluxmm)
1136      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1137        including separate counting and multipliers
1138    o pkg/rbcs
1139      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1140    
1141    checkpoint58k_post
1142    o testreport:
1143     - always build in dir. "build" (if not there, mkdir build instead of building
1144       & running in input)
1145     - run in dir run (if it exists), in build otherwise.
1146     - call prepare_run (if input/prepare_run exists)
1147     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1148    o pkg/exf modifications to interpolation and rotation routines for more
1149       reasonable treatment of North Pole singularity: for tracers North Pole
1150       value is set to northernmost zonal-mean value, for zonal velocity it is
1151       set to zero, and for meridional velocity it is set to northernmost value.
1152    o pkg/exf/exf_check_range.F
1153     - add tile index to diagnostics and move stop statement to the very
1154       end of the routine.
1155    o pkg/diagnostics: (diagnostics_main_init.F)
1156      define title of isomorphic variables according to the current config.
1157    o pkg/thsice with pkg/seaice dynamics:
1158    - fix domain of computation (interior only, required for exf) and do exchanges
1159    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1160    o towards a standard way of dealing with multi-threading in MONITOR
1161      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1162    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1163       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1164    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1165    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1166    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1167       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1168    o tracer advection:
1169     - clean-up and simplify calc_common_factors.F
1170     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1171       advection subroutine (but still not used within DST advection S/R)
1172    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1173    
1174    checkpoint58j_post
1175    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1176      from file (collects calls previously in FORWARD_STEP)
1177    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1178    o adjoint store dir. adjusted accordingly
1179    o genmake2
1180      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1181    
1182    checkpoint58i_post
1183    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1184      on wind stress (SEAICEstressFactor defaults to 1.)
1185    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1186      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1187    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1188      on CS-grid: no longer loosing mass.
1189    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1190    o pkg/ggl90: fix sloppy output and fix a bug
1191    o pkg/seaice: added SEAICEuseEVPpickup parameter
1192      - Set to false in order to start EVP solver with
1193        non-EVP pickup files when using SEAICEuseEVP
1194      - fix sign error in diffusion in seaice_calc_rhs
1195    
1196    checkpoint58h_post
1197    * Modifications for bottom topography control
1198      o replace hFacC by _hFacC at various places
1199      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1200      o add non-self-adjoint cg2d_nsa
1201      o update autodiff support routines
1202      o re-initialise hfac after ctrl_depth_ini
1203      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1204    * Adding verification for 5x5 box (4-layer) bottom topography control
1205    
1206    checkpoint58g_post
1207    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1208       used for mean seasonal cycle, mean diurnal cycle); add an example
1209       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1210    o pkg/ggl90:
1211      - add parameter (minimum surface kinetic energy)
1212      - fix bug (avoiding division by zero)
1213    o couple pkg/thsice to pkg/seaice:
1214      - modify advection in seaice to accomodate new scalar fields to be advected
1215      - only muliDimAdection scheme work with seaice/thsice
1216      - mapping of thsice-variables to seaice-variables, back and forth
1217      - does not break the verification experiments, but does not give the
1218        desired results either
1219    o pkg/seaice
1220      - make (default) second order advection a bit less confusing?
1221    
1222    checkpoint58f_post
1223    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1224      to pkg/seaice):
1225      - new routines thsice_map_exf and thsice_get_exf provide the interface
1226      - add an additional formal parameter to thsice_solve4temp
1227    o pkg/exf:
1228      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1229      - correct Stefan-Boltzmann constant
1230      - new parameter for longwave surface emittance
1231      - separate some stuff from exf_bulkformulae into new routines  
1232        exf_radiation, exf_wind
1233      - add new parameters and constants: longwave emissivity for ocean, ice
1234        and snow, evaporation parameters over ice
1235      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1236        either wind from stress or stress from wind
1237    o pkg/thSIce:
1238    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1239    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1240       and THSICE_CALC_THICKN
1241    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1242    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1243      to make debugging easier.
1244    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1245    o pkg/bulk_force:
1246      - clean-up comments and parameters ;
1247      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1248    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1249      generate new output for test-experiment: aim.5l_cs.thSI
1250    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1251      testreport accordingly
1252    
1253    checkpoint58e_post
1254    o SEAICE_CGRID adjoint done
1255    o R_STAR adjoint implemented.
1256      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1257      * need to sort out init. of h0facc, etc.
1258    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1259      to be able to use it in pure forward.
1260    
1261    checkpoint58d_post
1262    o upgrade simple test-experiment to tutorial example:
1263     step.1: duplicate the experiment and (step.2) will remove the old copy.
1264      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1265      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1266      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1267      tutorial_global_oce_biogeo    <- copy of dic_example
1268      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1269      tutorial_plume_on_slope       <- copy of plume_on_slope
1270      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1271      tutorial_global_oce_optim     <- empty for now (David ?)
1272      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1273     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1274    o correct a sign problem in cost_scat.F
1275    o obcs and ptracers: fix boundary conditions for advections schemes
1276      with larger stencil
1277    o thsice adjoint: start
1278    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1279      completeness
1280    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1281      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1282    o ptracers adjoint:
1283      * avoid extensive recomputatations
1284      * fix missing re-init. of gptr (missed by TAF)
1285    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1286      me to turn off the excessive output to STDOUT that this package produces
1287    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1288      and add those terms in Vector-Invariant formulation.
1289    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1290      if the control period (xx_hfluxperiod etc) is 0
1291    o in profiles pkg, clean routines and fix details
1292    o in ecco pkg, reading ssh data:
1293      fix problem in case the model does not start at iter0=0
1294    o fix mnc-pickup/restart for ptracers
1295    o new package prifiles:
1296      code to compute profile-based cost by Gael Forget
1297      (modifs in ecco, ctrl, autodiff)
1298    o Benign bug fix in initialization (spotted by M. Mazloff) of
1299      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1300    
1301    checkpoint58c_post
1302    o adjoint: finish NLFS adjoint and provide reference output in
1303      verification/global_ocean.90x40x15/results_ad_nlfs
1304    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1305      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1306      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1307      with SEAICE_CGRID defined.
1308    o move calendarDumps from "data" to "data.cal" and clean-up the code
1309      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1310    o add useEXF & useCAL flags (for now, set in hard-coded way)
1311    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1312      (were missing in NH mode, and wrong in quasihydrostatic mode).
1313      waiting for Chris updated version of calc_gw to add those CALLs.
1314    o fix bug in quasihydrostatic S/R ;
1315      add a test for this option: global_ocean.90x40x15.qshyd
1316    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1317      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1318    o add on/off flag useOffLine for package OFFLINE
1319    o seaice:
1320      - modify advection so that it works also on the C-grid
1321      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1322        problem in multi-tile runs with C-grid
1323      - add flags for clipping ice velocities and/or masking solver forcing
1324      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1325        C-grid solver
1326      - added a few comments to seaice_diffusion.F
1327      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1328        are now exclusive)
1329      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1330        required re-ordering the code a little:
1331       + make DAIRN global variable (defined in SEAICE)
1332       + move computation of the viscosities eta and zeta into a new separate
1333         routine (because I need to recompute them in seaice_ocean_stress.F)
1334    
1335    checkpoint58b_post
1336    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1337      update output.txt of exp. aim.5l_cs.thSI
1338    o various mnc cleanups and improvements:
1339      + shrink lookup tables by factor of ~4
1340      + better error reporting when running out of lookup space
1341      + able to handle longer path/file names (up to 500 chars)
1342    o adjoint:
1343      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1344      - TBD: "hidden" mom_vecinv recomp. in dynamics
1345    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1346     (allow to differentiate between forcing components using new integer flags:
1347      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1348     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1349    o ecco
1350      - enable trend removal from SSH anomaly obs.
1351    o adjoint
1352      - a fix for PmEpR when #undef EXACT_CONSERV
1353      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1354      - try to fix "hidden" recomp. in forward_step for NLFS
1355        (NLFS seems broken sometimes after I checked it in)
1356    o seaice:
1357     - add c-grid version of the dynamic solver:
1358       + three new routines that are the c-grid substitute lsr, dynsolver
1359         and ostres
1360       + put a few fields that were local to dynsolver into global common
1361         blocks, so that I can move the computation of stresses etc into
1362         seaice_lsr (saves coding but may break the adjoint).
1363     - replace more hardwired parameters by runtime parameters
1364     - add ice masks that mask the rhs of the implicit solvers where there
1365       is no ice (commented out in seaice_dynsolver, because i am not sure
1366       if this works properly), eventually this should replace the clipping
1367       of ice velocities in seaice_dynsolver to +/-40cm/s.
1368    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1369      include it only where its needed
1370    o move balancing of fluxes before the call of external_forcing_surf
1371    o seaice:
1372      - correct units of turning angles (now they are really in degrees)
1373      - move computation of GWATX/Y out of main routine into dynsolver
1374      - initialize GWATX/Y in seaice_init
1375    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1376      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1377    o seaice: add runtime flags for turning angles (default to zero)
1378    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1379      and trend from exf forcing and ctrl control adjustments
1380    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1381      (since checkpoint57x_post)
1382    o change the default rotation period to 86164.s = the Earth rotation
1383    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1384      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1385    o seaice advection: add code for choosing between the default (2nd order
1386      central differences) and multiDim advection schemes provided by
1387      pkg/generic_advdiff
1388    o seaice:
1389      - removed all references to SEAICE_GRID.h fields from
1390        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1391        (cubed-sphere configuration will change a little)
1392      - grid computations in seaice_init are obsolete now.
1393      - cleaned up code a little so that is easier to read (hopefully).
1394      - added new (better?) discretizations of default advection and diffusion
1395        (turn on with SEAICEuseFluxForm)
1396      - replace 1 in 3d global fields by kSurface in growth.F
1397      
1398    checkpoint58a_post
1399    o seaice:
1400      - bug fix in advect.F
1401    o shelfice:
1402      - separate shelfice load anomaly from pload (breaks with time
1403        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1404        Its default is 0., but it may be computed more cleverly from (unknown)
1405        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1406        done offline. A good approximation of the pressure load anomaly is
1407        necessary to avoid large initial adjustment processes underneath
1408        deep-reaching shelfice.
1409      - small fix in ISOMIP shelfice_thermodynamics
1410      - add more sophisticated thermodynamics of Hellmer (1989), this is
1411        now the default
1412      - give a few constants more intuitive names
1413    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1414      if bulk formulae are used in long integration (especially EmPmR). Turn
1415      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1416      if balancePrintMean, the imbalance that is substracted is printed to
1417      STDOUT.
1418    o fix bug (typo) in obcs_apply_eta.F
1419    o add a new package shelfice which enables us to model the circulation
1420      underneath shelf-ice with draughts of hundreds of meters.
1421     - works
1422     - to do: + include improved thermodynamics
1423              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1424                instead of new field kTopC
1425              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1426                instead of new field R_shelfIce and new code in ini_depth.F
1427                and ini_mask_etc.F?
1428              + adjust vertical mixing schemes?
1429    o seaice pkg:
1430     - add a cpp-flag to include a simple formula for a salinity dependent
1431       freezing point of sea water at the surface
1432     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1433       meridional stresses are now different (and hopefully correct)
1434    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1435       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1436       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1437    o pkg/diagnostics: add options and parameters for regional-statistics
1438       diagnostics ; define regions by reading a region-mask from a file
1439       (might add other options later)
1440    o pkg/bulk_force:
1441     - add option and parameters to use AIM surface-flux formulae.
1442     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1443       others forcing fields (defined in PARM05, parameter file "data") are loaded
1444       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1445     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1446     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1447     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1448       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1449     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1450    
1451    checkpoint58
1452    o add "--embed-source" option to genmake2 which, when the supporting
1453      tools can be compiled (as determined by genmake2) will turn on the
1454      embed_files package which then embeds the entire MITgcm source code
1455      (*.[fFhc] + Makefile) used for the build within the executable
1456      - requested by CNH but off by default
1457      - adds a paltry <9MB to the mitgcmuv executable in most cases
1458      - only writes the output when useEMBEDSRC in eedata is true
1459    o clean up 3-dim. relaxation codes:
1460      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1461      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1462      * Thanks to Tom Haine for testing!
1463    
1464    checkpoint57z_post
1465    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1466      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1467    o fix the pickup behavior for obcs in combination with ptracers
1468    o fix a bug in ptracers_external_fields_load
1469    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1470      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1471    o transfered surface NH pressure to eta field (if exactConserv).
1472    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1473         and update lab_sea output.txt file.
1474    o completing 3-dim. relaxation code: additional term
1475         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1476      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1477      * At compile time, in "EXF_OPTIONS.h" set
1478          #define  ALLOW_CLIMTEMP_RELAXATION
1479          #define  ALLOW_CLIMSALT_RELAXATION
1480      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1481          tauThetaClimRelax3Dim = 15552000.0,
1482          tauSaltClimRelax3Dim  = 15552000.0,
1483      * 3 cases:
1484          1) Use a constant-in-time 3-dim. field
1485          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1486          3) Real-time relax. to time-evolving prescribed field
1487    o Adding Laplacian-type smoothness constraint on
1488      initial and boundary (forcing) controls (ic, bc)
1489      * enable at compile-time via
1490        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1491      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1492      * Absolute scale somewhat unclear so far
1493      * no area weighting was included since no other cost term does so far
1494    
1495    checkpoint57y_post
1496    First step for a NLFS adjoint
1497    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1498    o new init. routines for calc_r_star, calc_surf_dr
1499    o still need to deal with ini_masks_etc
1500    o testreport seemed happy
1501    checkpoint57y_pre
1502    
1503    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1504    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1505    o add new offset feature to offline pkg (plus minor cleanup)
1506    o cfc fixes for final year of integration
1507    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1508      be in GCHEM_OPTIONS).
1509    
1510    checkpoint57x_post
1511    o fix testreport Pb in multiple test experiment.
1512    o cleanup our namelist syntax in verification:
1513      - make it more F95 standards compliant (some work still needed)
1514      - allows the vast majority of our tests to work with gfortran
1515    o Non-Hydrostatic:
1516     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1517     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1518    o Allow to apply AB on T,S rather than on AB(gT,gS):
1519     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1520     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1521       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1522     - need a "clever" read_pickup to restart from the other AB formulation
1523    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1524    o remove some unused variables (reduces number of compiler warnings)
1525    o adjoint
1526      * Disable useVariableViscosity for adjoint for time being
1527        (there are a number of extensive recomputations)
1528      * Initialize certain variables needed for adjoint
1529    
1530    checkpoint57w_post
1531    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1532                 fix the singleCpuIO RS version of MDSWRITEFIELD
1533       and add a WARNING if using globalFiles=T with multi-processors.
1534    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1535      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1536    o tracer advection scheme:
1537      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1538       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1539       was not very convenient).
1540      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1541       (further tests needed for the implicit DST & Flux-Limiter schemes).
1542    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1543      and sRef for convenience, handy, when you want to initialize
1544      ptracers in a large domain with a constant non-zero value. Also,
1545      untangle ptracers_init.F a little.
1546    
1547    checkpoint57v_post
1548    o change dome exp. to use variable viscosity in side-drag terms.
1549    o remove all the files from the cfc_offline test since they are now
1550      incorporated into tutorial_cfc_offline which has been producing
1551      identical results for a few days of testing
1552    o add new parameter: sideDragFactor to enable half-slip-side BC
1553      and change side-drag S/R to use viscosity from mom_calc_visc
1554      (can switch back by setting sideDragFactor=0.); affects results at
1555      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1556       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1557    o vorticity & strain are now computed without masking, to account for
1558      no-slip-side BC in variable viscosity calculation ; mask is applied
1559      anyway later on, before computing advection/coriolis terms.
1560    o modify exp4 to test new obcs support for reading from external files
1561      and for passive tracers
1562    o fix behavior of ptracers_monitor when monitor output is written to a
1563      netcdf-file; still not independent of monitor.F (writes in the same
1564      file).
1565    o change default value of tRef (put a uniform, meaningful value for ocean
1566      & atmos) and initialize sRef (was missing, as Martin mentioned).
1567    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1568      to be proportional to enstrophy dissipation length.  Thus,
1569       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1570      This is now consistent with Smagorinsky and with the manual.
1571    
1572    checkpoint57u_post
1573    o OBCS and PTRACERS: add open boundary support for passive tracers
1574      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1575        OB-values from file; this is not different from the way theta and salinity
1576        are treated
1577      - however, Orlanski-radiation conditions are not supported, and the model
1578        will stop if you use pTracers and Orlanski at the same time.
1579      - beefed up the rountine obcs_external_fields_load: now only those open
1580        boundary values are overwritten with values from files for which there
1581        are really files, otherwise the OB-fields remain untouched. This makes
1582        it possible to use different OBs at different ends of the domain (as
1583        with EXF)
1584    o reduce number of exch calls in shap_filt (s2).
1585    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1586      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1587    
1588    checkpoint57t_post
1589    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1590    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1591      same truncation, independent of the face number: affects affects several
1592      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1593    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1594      note that biharmonic viscosity + no-slip was not tested in any experiment.
1595    o fix bug in non-linear free-surf side-drag ; generate new output for
1596      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1597    o make mnc honor the writeBinaryPrec flag for most kinds of output
1598    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1599    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1600      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1601    o add brackets in multi-terms sum to get same truncation, independent of
1602      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1603      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1604    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1605      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1606      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1607      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1608      Suggested values of viscosity parameters found in mom_calc_visc.
1609      Many new viscosity diagnostics available.
1610    
1611    checkpoint57s_post
1612    o Add clearing-house for viscosity calculations, mom_calc_visc and
1613      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1614      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1615      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1616      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1617      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1618      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1619      ViscAhStrain and viscAhTension are now retired.
1620    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1621    o In response to JMC's bug report, genmake2 now ignores any soft-links
1622      that it finds in the *current* directory when searching for files.
1623      Soft-links found in any other source directories will still work as
1624      they did before.
1625    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1626      a C routine to unlimit the stack size
1627    o mnc-ify pkg/aim snapshot vars
1628    o mnc-ify pkg/land as requested by Daniel
1629    o various changes to mnc including:
1630      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1631      - output can now be grouped so that all files within a group
1632          change the ITER portion of their names in lock-step together
1633      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1634          and works with both EXCH1 and EXCH2 (but needs more testing)
1635      - writing works for all verification test cases w/ g77 on Linux
1636    
1637    checkpoint57r_post
1638    o make MNC variable initialization happen earlier
1639    o add diagnostics for (almost) each term of the momentum Eq.
1640    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1641    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1642    o remove MINIMAL_TAVE_OUTPUT option ;
1643      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1644    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1645      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1646    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1647    o add time-dependent SST, SSS control
1648    o cost terms in ecco/ modularized (new cost_generic.F)
1649    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1650    o new infrastructure for seaice model vs. obs misfits in seaice/
1651      * driver from the_main_loop.F is seaice_cost_driver.F
1652      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1653      * gradient check in Exp. 6a of natl_box_adjoint/
1654    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1655      (see README file)
1656    
1657    checkpoint57q_post
1658    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1659    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1660      - bug was reported by Jean-Michel and Ian Fenty
1661    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1662      update exp. cpl_aim+ocn output.
1663    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1664      Needed for high-res. runs with large global files
1665      to be able to limit tapelev size
1666    o Changed some tests for adjoint:
1667      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1668      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1669      * global_ocean.90x40x15/ back to default 3-level checkpointing
1670    o Modifications to enable scripted COMMON to MODULE conversion
1671      * verification/OpenAD/code/ has necessary scripts and description;
1672      * converts, compiles and runs successfully;
1673    
1674    checkpoint57p_post
1675    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1676    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1677      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1678    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1679    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1680      (was already the case for dissipation with mom_vecinv,
1681       and also the case for grad.PhiHyd when staggered-timeStep)
1682      This will allow to put dissipation out-off the AB time-stepping.
1683     Unfortunately, affects truncation error. Update output of exp. that "fails"
1684      (cg2d matching number) and leave the others for later: front_relax(10),
1685      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1686      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1687    
1688    checkpoint57o_post
1689    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1690      (2) its ready to be documented during the 20050801 DocFest
1691    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1692      for ideal_2D_oce and lab_sea on linux_ia32_g77
1693    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1694      in global1x1_tot/code_seaice_adj to access indices 32, 33
1695      (worth another tag)
1696    
1697    checkpoint57n_post
1698    o adding precip control xx_precip 32
1699    o adding swflux control xx_swflux 33
1700    o Replacing 10 forcing penalty cost routines by 1 generic.
1701    o Implementing partitioning in time-mean and variable adjustment
1702      for atmos. state.
1703    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1704    o in natl_box_adjoint:
1705      * updated exp 1 to 10
1706        (but does not have time-mean vs. variable split results yet)
1707    o updated global1x1/*_seaice_adj/
1708      to incorporate latest changes
1709    o enable useSingleCpuIO for mdsio vector routines
1710      (applies in particular to tapelev I/O)
1711    o removed inefficient K-loop in all active_file*control*.F
1712    
1713    checkpoint57m_post
1714    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1715      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1716    o pkg/exch2: filling of face-corner halo regions is optional
1717      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1718    
1719    checkpoint57l_post
1720     tag before updating tutorials (pre-release-2)
1721    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1722       for output and interpolation of input fields onto model grid)
1723    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1724       Affects results of exp. rotating_tank ; update output.txt.
1725    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1726          and taking the square quantity and/or using a fraction-weight field.
1727    o fix aim_diagnostics_init.F mate numbers.
1728    o add mnc output capability to diagnostics/diagstat and update
1729      our cvsignore files for the ACSII output generated
1730    
1731    checkpoint57k_post
1732    o lab_sea now uses diagnostics package and provides a suite of
1733      new EXF diagnostics output.
1734    
1735    checkpoint57j_post
1736    o exf
1737      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1738        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1739        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1740      * extended diagnostics output
1741        - now includes all EXF variables
1742        - hs, hl moved to common block
1743        - separate S/R for diagnostics, called after ctrl vector is added
1744        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1745        - EXFqnet contains true Qnet (i.e. includes qsw)
1746      * updated verif. lab_sea, global_with_exf
1747      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1748        to ensure that diagnostics sees a true EXFqnet
1749    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1750    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1751      several times with different frequencies.
1752    o mnc-ify the thsice package as requested by Daniel Enderton
1753      - the monitor--MNC output needs work
1754      - many attributes need to be added (most are currently blank)
1755    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1756      - many attributes need to be added (most are currently blank)
1757    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1758    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1759    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1760      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1761         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1762    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1763     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1764    
1765    checkpoint57i_post
1766    o Diagnostics package was changed: diagnostic allocation is now deactivated
1767      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1768    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1769      add 1rst Order upwind vertical Shear.
1770    o add a quick fix for A/B checkpointing in OFFLINE mode
1771    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1772      end-run around the C/Fortran linking horror in eesup/src/timers.F
1773    o added pkg/runclock: allows user to terminate run based on wall clock
1774    o added non-hydrostatic scaling parameter: nh_am2
1775    o pkg/my82: futile attempt to make results compiler-independent by adding
1776      some "_d 0", etc. no effect.
1777    o for mnc output, fill the 'T' coordinate var with myTime and create a
1778      separate 'iter' variable for iteration count
1779    o pkg/diagnostics:
1780      add new capability: output of Global/Regional & per-level statistics ;
1781      tested against monitor output (including land & thSIce) on various exp.
1782    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1783    
1784    checkpoint57h_done
1785      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1786      data.diagnostics, data.gchem, data.ptracers) is done.
1787    
1788    o pkg/diagnostics: prepare for Global/Regional statistics.
1789      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1790    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1791      and rename it: DIFFERENT_MULTIPLE
1792    
1793    checkpoint57h_post
1794    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1795    o pkg/diagnostics: change output frequency, now in seconds (instead
1796      of Nb of iterations). This requires to change data.diagnostics.
1797    checkpoint57h_pre
1798    
1799    o in mnc, let the user create the output dir if both mnc_outdir_date
1800      and mnc_outdir_num are false
1801    o add fflags() to pkg/diagnostics which allows one to specify, on a
1802      per-file basis, the file precision [default behavior is unchanged]
1803    o added diagnostics to pkg/kpp, including computation of mixed layer
1804      depth based on a temperature/density criterion
1805    o updated verification/natl_box to test the new pkg/kpp diagnostics
1806    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1807    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1808    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1809      not mnc -- this mistake was found by JMC and is now corrected
1810    
1811    checkpoint57g_post
1812    o add Adams-Bashforth 3rd Order time stepping:
1813      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1814      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1815    checkpoint57g_pre
1816    
1817    o make lambda[Theta,Salt]ClimRelax spatially varying
1818      (default remains spatially uniform constant based on tau)
1819    o added new control variables
1820      * init. uVel, vVel, etanN
1821      * lambda[Theta,Salt]ClimRelax
1822    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1823      (suggested by G. Forget)
1824    
1825    checkpoint57f_post
1826    o add parameter "baseTime" = model base time = time at iteration zero
1827      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1828      account for baseTime shift
1829    o move Coriolis arrays from PARAMS.h to GRID.h
1830    checkpoint57f_pre
1831    
1832    o mnc-ifying the seaice package
1833    o introduced an alternative length scale calculation for use in the limiting
1834      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1835    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1836    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1837      as well as grad(vort3).  Made it compatible with both approximate form
1838      for the cubed sphere and full form of these gradients.  Added flag
1839      useFullLeith to select between approximate and full form.  
1840    o add "d0" in getcon.F to reduce differences between compilers/platforms
1841      update output.txt of exp. fizhi-gridalt-hs
1842    o change port_rand funtion to allow to set the seed.
1843    o fix obscure MNC bug involving conversion between reals and integers
1844      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1845        new version is now more standards-compliant
1846    o adjoint-related modifications
1847      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1848      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1849      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1850    
1851    checkpoint57e_post
1852    o Adding eddy stress controls a la Ferreira et al.
1853    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1854    
1855    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1856      update output.txt of exp. fizhi-gridalt-hs
1857    o add more "Z" dimensions and associated coordinate vars to MNC
1858    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1859    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1860      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1861      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1862      months and years.  Requires pkg/cal.
1863    o diagnostics: add pickup functionality
1864      - off by default for backwards compatibility
1865      - current version only uses MDSIO -- MNC will be added
1866    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1867    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1868    
1869    checkpoint57d_post
1870    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1871    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1872      output from the diagnostics package
1873    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1874    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1875      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1876    o add coordinate variables to the MNC output from the diagnostics package
1877    o change MNC-flags default value: true when useMNC=TRUE
1878    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1879      the ability (off by default) to read the grid information using MNC
1880    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1881    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1882    o do snap-shot diagnostics at the middle of the time-interval (instead of
1883      at the end).
1884    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1885      new test for AIM with thSIce + slab-ocean
1886    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1887    o move state variable diagnostics to the beginning of the time step ;
1888      (note: still needs some work specially for snap-shot diagnostics)
1889      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1890    
1891    checkpoint57c_post
1892    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1893    o generate new output.txt files on faulks with g77 & the new -ieee option
1894    checkpoint57c_pre
1895    
1896    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1897      update output.txt of exp. global_ocean.90x40x15
1898    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1899      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1900    o add saltFlux(+File) forcing capability with periodicExternalForcing
1901    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1902    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1903    o improvements for the MNC output from DIAGNOSTICS:
1904      - correct handling of the unlimitied dimension
1905      - all dims now have associated coordinate variables
1906      - variables located at U, V, and Corner ("Z") points are now written
1907        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1908        *all* data points are output
1909    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1910    o added pkg/seaice/seaice_monitor.F
1911    o mdsio_readfield.F can now read files visible only to master MPI process.
1912    o pkg/seaice: some test code for ice-modified ocean stress
1913    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1914      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1915      spurious negative numbers for precipitation and humidity.  Will cause
1916      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1917    o pkg/ctrl/
1918      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1919        May be enabled via doPackDiag
1920      *  introduce z-scaling of
1921         + gradient (doZscalePack) and
1922         + control (doZscaleUnpack)
1923    o pkg/mdsio/
1924      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1925      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1926    
1927    checkpoint57b_post
1928    o simplify options in diagnostics_fill arguments (remove weird combinations)
1929    o fix MNC coordinate variables so that they now contain per-face index
1930      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1931      general, EXCH2 grids are only aligned to a "local" coordinate system
1932    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1933    o Implement instantaneous output within pkg diagnostics:
1934      setting a negative frequency in data.diagnostics produces
1935     "snap-shot" output (as opposed to time-average if freq > 0)
1936    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1937      NOTE: change ptracer diagnostics name: use 2 characters to work with
1938            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1939    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1940      becomes the coordinate variable for the 'T' dimension
1941    o add CF-style coordinate variables to MNC
1942      - just a first cut:  numbers are meaningless on the cubesphere and
1943        missing along the T axis but otherwise it works!
1944    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1945    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1946    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1947      this is based directly on what the model compute, so that the content of
1948      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1949    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1950    o clean up build options files for SunOS, in particular
1951      - remove -traditional from xmakedepend
1952      - change -xarch=v9 to -xarch=native for f77
1953      - restore use of make (not gmake)
1954      - add CC=gcc if using g77
1955    o changes per discussion of AM, JMC, & EH3 today:
1956      - move redundant "grid" variables out of "state" -- in preparation of
1957        creating proper CF-style coordinate variables and in recognition
1958        that any/all grid variables can be easily copied (eg. w/NCO) from
1959        the grid files into any of the other NetCDF files
1960      - *always* output grid variables with MDSIO (this will eventually be
1961        changed)
1962      - output MNC grid file if useMNC is true
1963    o every instance of _END_MASTER() has been found and replaced with
1964      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1965      preprocessors
1966    o re-arrange diagnostics pkg initialisation:
1967     - allow each package to extend the available diagnostics list
1968     - add some checking and fix small problems (multi-threaded, ...)
1969     - new S/R diagnostics_fill (replace fill_diagnostics):
1970       look through the short list of active diag. (instead of the long list)
1971       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1972    
1973    checkpoint57a_post
1974    o this set of changes restores TAMC compatibility
1975      tested for global_ocean.90x40x15 adjoint on trough
1976      (what a pain)
1977    
1978    checkpoint57a_pre
1979    o some modifs in tools/build_options for sunos
1980    o call ctrl_pack for ctrl at end for optimcycle=0
1981    
1982    checkpoint57
1983    o add horizontal bi-harmonic viscosity for vertical velocity
1984      - new parameter viscA4W (defaults to viscA4)
1985      - affects only non-hydrostatic code
1986      - to be done: no-slip lateral boundary conditions
1987    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1988    o implement Implicit Vertical advection for pTracers
1989    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1990      (implemented also for implicit vertical diffusion & advection)
1991    o OBCS: extend application of tracer open boundary conditions
1992      to a strip beyond the boundary of width Olx/Oly
1993    o add call monitor to TAF set of required calls (flow directives)
1994      and include in natl_box_adjoint
1995    o untangle a few ifdefs related to cost, ctrl, autodiff
1996      untangel a few ALLOW_ECCO_OPTIMIZATION
1997    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1998      (theta2, salt2 in ecco_cost_weights)
1999    
2000    checkpoint56c_post
2001    o OBCS as control variables
2002      - update ctrl_ad_diff.list, obcs_ad_diff.list
2003      - remove balance of obcs controls from default
2004      - fix index bug nobcs in ctrl_init
2005      - fix dummy fields filen in ctrl_pack
2006      - add dummy weights for obcs
2007    o lsopt: comment out fort.94 output
2008    o optim:
2009      - remove unnecessary header files
2010      - adjusted namelists
2011      - add xerbla.F to Makefile
2012    o exf:
2013      - multiple modifications of exf_check_range
2014      - unit change in exf_init_runoff from [m/year] to [m/s]
2015    o mdsio:
2016      - i/o-vector change debugLevel from debLevA to debLevB
2017    
2018    checkpoint56b_post
2019    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2020      is called from DO_THE_MODEL_IO
2021      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2022      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2023      - clean up PTRACERS_WRITE_TIMEAVE a little
2024    o add another verification experiment that tests both the cfc-pkg and
2025      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2026      reactive tendencies treated inline with regular timestepping
2027    o testreport previously did a lousy job of comparing small numbers, so
2028      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2029      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2030      testreport.
2031    o ptracers_monitor: bug fix for MPI
2032    
2033    checkpoint56a_post
2034    o GCHEM: finish reorganizating the package
2035      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2036        (introduces another 3D-array for each passive tracer, but only if
2037        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2038        gchemTendency is not needed because the timestep is done separately)
2039      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2040      - GCHEM is now---more or less cleanly---separate from PTRACERS
2041      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2042        so clear to me how that should be done in a general way.
2043    o CFC: improve formatting of output in CFC_ATMOS
2044    o PTRACERS:
2045      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2046        that ALL experiments with ptracers enable can be checked. This makes
2047        GCHEM_MONITOR obsolete.
2048      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2049        monitorFreq
2050      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2051    o add PTRACERS (PTR0[1-5]) to testreport output
2052    o exf_check_range:
2053      * default changed to .TRUE.
2054      * will check values for niter0 if debLevA, every timestep if debLevB
2055      * STOP in exf_check_range if 'out of range'
2056      * range chosen generous to allow for potential extema
2057      TBD: a version with stricter range
2058           permitted range would be runtime parameters
2059    o GMredi:
2060      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2061      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2062      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2063    o GCHEM:
2064      - move call to GCHEM_FORCING_SEP, so that it is now called before
2065        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2066      - introduced a useGCHEM runtime flag and applied it everywhere.
2067      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2068        this flag is now only visible within GCHEM-pkg routines.
2069      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2070        be replaced by a 3D array that is computed before thermodynamics; for
2071        this, the tracer ID iTracer had to be included into the parameter list
2072        of ptracers_forcing
2073      - set up forward_step to call gchem_forcing, that will replace
2074        gchem_forcing_int in ptracers_forcing
2075      - cleaning up
2076    o small cleaning of exch2: remove files that are also in eesupp/src
2077    
2078    checkpoint56
2079    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2080    o mnc: cleanup "full" files--fixes out-of-memory problem
2081    o ECCO-GODAE
2082      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2083      * fully merged and updated from SIO code
2084        windstress sign change affects
2085        - exf_inscal_[u/v]stress
2086        - sign of xx_tau[u/v] adjustments
2087        - signs in cost_scat
2088      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2089      * natl_box_adjoint updated and compressed
2090      * 2-level checkpoint switch added
2091        (tested in EXP. 1 of natl_box_adjoint)
2092      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2093    o SVD
2094      * first complete, non-hacked version for SVD calculations
2095      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2096        performed via direct access files admtlm_vector.it????
2097        (via ctrl_[un]pack)
2098      * optimcycle is used for ARPACK iteration counter
2099        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2100      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2101        and add linear transforms where necessary
2102      * controls are initial/final SST, SSS (can be extended; need to check
2103        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2104    o mdsio: filename info to both stderr, stdout
2105    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2106      from sign change
2107    
2108    checkpoint55j_post
2109    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2110      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2111    o add consistent build directories and .cvsignore files to verification
2112    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2113    o make all subroutines 30 or less characters in length for certain older
2114      compilers to work (a thorough search only turns up two routines in
2115      pkg/ptracers)
2116    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2117      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2118    
2119    checkpoint55i_post
2120    o change arrays for total vertical diffusivity (2.D if explicit,
2121      3.D if implicit) ; each ptracer uses its own background value.
2122    o added mnc/NetCDF output capability to ocn_compon_interf
2123      - added bits to verification/cpl_aim+ocn so that it can run on
2124        ITRDA and other clusters without the mpirun "-wd" option
2125    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2126      configuration
2127    o give MNC the ability to create additional files rather than
2128      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2129      - the default is just less than 2GB which is a practical limit
2130        on many systems
2131    o Compute the non-local term using either KPP vertical diffusivity (=default)
2132       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2133    
2134    checkpoint55h_post
2135    o add verification test "vermix"
2136    o remove all the *_ioinc flags and replace with the single global
2137      outputTypesInclusive flag
2138    o allow to set a vertical profile of vertical diffusivity for T & S
2139    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2140    o useMNC moved from data.mnc to data.pkg
2141    
2142    checkpoint55g_post
2143    o Renaming carbon AD experiments to comply with testreport conventions
2144    o Updating adjoint of Held-Suarez hs94.1x64x5
2145    o Fixing directives for non-ECCO forward_step, after ECCO directives
2146      have been fixed to avoid recomp. of do_oceanic_phys
2147      Works well for global_ocean.90x40x15,
2148      but recomp. issue remains for carbon
2149    o Updating adjoint output for natl_box_adjoint after
2150      pkg/ecco has been modified (see taga c55d_post)
2151    
2152    checkpoint55f_post
2153    o rename to timeave_init_fixed
2154    
2155    checkpoint55e_post
2156    o some delicate re-shuffle of store directives to avoid one
2157      extra call of do_oceanic_physics
2158      affects ecco_the_main_loop.F, do_oceanic_physics.F
2159      checkpoint_lev1_directives.h
2160    o NB: this may break global_ocean adjoint temporarily,
2161      but it is clear how to fix it. Will do later, need this now.
2162    
2163    checkpoint55d_post
2164    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2165    o ecco_cost_weights is modified to 1x1 runs
2166    o modifs to allow observations to be read in as
2167      single file or yearly files
2168    o enable to read exf forcing fields as either
2169      single file or yearly files (flag useExfYearlyFields)
2170    checkpoint55d_pre
2171    
2172    o switch between 2-level and 3-level checkpointing
2173    o add ability of MNC to write local and "partial" (eg. 2D slices where
2174      the full 3D field is never actually stored) arrays to NetCDF files
2175      with the correct (that is, the complete multi-dimensional) set of
2176      array indicies
2177      - used in mom_vecinv() to write the diagFreq output
2178      - tested (demonstrated) in verification/aim.5l_cs
2179    o further mnc-ification
2180      - add verification/lab_sea to the list with mnc setups
2181      - fix undefined mnc v-names in cd_code
2182      - add kpp to mnc output (both snapshot and timeave)
2183    o non-hydrostatic code
2184      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2185        in calc_gw.F
2186      - defaults to viscAh
2187      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2188        friction or Leith) in non-hydrostatic mode, as long as there is
2189        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2190    o pkg/cost
2191      extend simple cost functions to treat time mean quantities
2192      (T,U,V) via cost_accumulate_state from cost_tile
2193    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2194        be 2 times larger than the minimum size the advection scheme requires.
2195        now get a perfect conservation of salt in advect_cs test-exp (updated)
2196    o GGL90 (Gaspar's TKE mixed layer)
2197      - add horizontal diffusion of TKE, requires exchanges in
2198        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2199        default. In OPA there is no horizontal diffusion of TKE but the
2200        mixing coefficients are computed from a horizontal average of TKE of
2201        6 points or so. I think that diffusion has a little more physical
2202        justification.
2203      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2204        was in vain)
2205      - mask tke-variable in ggl90_init
2206    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2207    o fix biharmonic diffusion on CS-grid.
2208    o more obcs stuff
2209      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2210        for reading boundary values. This routine is called from
2211        obcs_prescribe_read
2212      - updated obcs_check
2213      - changed sponge layer relaxation parameter units for days to seconds
2214      - turned off sponge layer by default
2215      - changed argument list of OBCS_CALC to myTime+deltaTclock
2216      - fixed about 35 bugs in obcs_external_fields_load
2217    
2218    checkpoint55c_post
2219    o obcs stuff
2220      - new runtime flags useOBCSprescribe, useOBCSbalance
2221      - re-arranged obcs_calc
2222      - moved exf_getobcs to obcs_prescibe_read
2223        obcs_prescibe_read is called after ORLANSKI stuff
2224        and independent of it (executable can contain all).
2225      - updated obcs_check
2226      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2227        These may be necessary only if tangential velocities are
2228        prescribed at OB, not sure, needs testing.
2229    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2230      which simplifies the calls and passes the ifc check-bounds test
2231    
2232    checkpoint55b_post
2233    o add a 2D scalar, Z location, exchange_2 routine.
2234    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2235      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2236      affects advect_cs results (for the wrong reason): update output.txt
2237    o use a more standard discretization for biharmonic viscosity ;
2238     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2239      affects results of dome set-up: update output.txt
2240    o fix gad_advection.F (CubedSphere part), back to version 1.23
2241    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2242    
2243    checkpoint55a_post
2244    o merged code to
2245      * prescribe/read time-dependent open boundaries
2246        (works in conjunction with exf, cal)
2247      * sponge layer code for open boundaries
2248      * each boundary N/S/E/W now has its own CPP option
2249        (healthy for the adjoint)
2250    
2251    checkpoint55
2252    o up-to-date adjoint of previous breaks
2253      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2254      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2255      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2256      - carbon: * remove tr1-related adjoint verification
2257                * add ptracer as control variable
2258    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2259      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2260    
2261    checkpoint54f_post
2262    o in verification/carbin/ remove experiment related to
2263      ALLOW_PASSIVE_TRACER (array tr1 etc)
2264      code_ad/ input_ad/ results_ad
2265    
2266    o add two new packages
2267      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2268        + subject to optimization (memory)
2269      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2270        + subject to reordering (many GOTOs in the original code)
2271        + so far opps is called for every (i,j) point, and then operates in
2272          the vertical; one may want to reorder the scheme in order operate in
2273          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2274          fields)
2275    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2276      - all verification tests compile and run with linux_ia32_g77
2277      - defaults are compatible with current input files--nothing
2278        should change if you were not previously using MNC
2279      - MNC output has been added in numerous places (eg. timeave)
2280        but there are still a few writes not yet do-able with MNC
2281        (this is in progress)
2282      - flags now allow for either/or/both use of MDSIO and MNC and
2283        documentation will soon follow
2284      - numerous small formatting cleanups for ProTeX
2285    o add version info (via BUILD_INFO.h) to MNC and stdout
2286    
2287    checkpoint54e_post
2288    o add two new packages
2289      - pp81 (Packanowski and Philander, 1981), Richardson number and
2290        stratification dependent mixing
2291      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2292      - these scheme operate in a similar manner as KPP (without ghat, of
2293        course), however there is only one diffusivity that is used for both
2294        temperature and salinity (and passive tracers)ç
2295    o add offline package
2296    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2297      provided by Stephanie Dutkiewicz
2298    o genmake2: add ability to search for C compilers and cleanup test output
2299      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2300    
2301    checkpoint54d_post
2302    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2303    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2304      leading to additional shift by 5 days each year of integration
2305       (i.e. leading to considerable offset over the years)
2306    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2307    o start with no AB and no initial filtering (staggerTimeStep):
2308      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2309    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2310      (external loading & cpl import/export stay in forward_step.F)
2311    o update coupling interface to work with new staggerTimeStep
2312    o change MDSIO ptracers_pickup.
2313    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2314    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2315    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2316    
2317    checkpoint54c_post
2318    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2319      this affects (truncation error) output.txt of test-exp:
2320       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2321    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2322    o change Qnet to always be the net heat flux, (+upward).
2323      affects (truncation error) output of natl_box exp.: updated
2324    o define the max number of passive tracers in PTRACERS_SIZE.h
2325    o start to test mnc routinely in exp0
2326    o add sea-ice loading (sIceLoad) as a new forcing field.
2327    
2328    checkpoint54b_post
2329    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2330       impressive on Altix and Opteron systems)
2331    o diagnostics can now write NetCDF files through the mnc package
2332    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2333    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2334    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2335      affects (truncation error) output of lab_sea & natl_box exp.: updated
2336    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2337    
2338    checkpoint54a_post
2339    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2340    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2341    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2342    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2343      + internal_wave (shift in writing cg2d_ini_res)
2344    checkpoint54a_pre
2345    
2346    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2347      - modified verification/lab_sea and natl_box_adjoint accordingly
2348    
2349    checkpoint54
2350    checkpoint53g_post
2351    o prepare splitting of thermodynamics: store convect.counter in common block
2352    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2353      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2354    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2355    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2356    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2357    o restore adjointability
2358    
2359    checkpoint53f_post
2360    o modifications that affect AIM experiment results (update output.txt):
2361      - no advection of S at top interface Nr (pkg/generic_advdiff)
2362      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2363    o AIM pkg:
2364      - include stability function into surf.Flux derivative relative to Tsurf
2365      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2366    
2367    checkpoint53e_post
2368    o merged cylindrical coord configuration
2369    o added rotating_tank experiment
2370    checkpoint53e_pre
2371    
2372    checkpoint53d_post
2373    o faulks upgraded: re-generate output.txt that have changed:
2374       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2375    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2376    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2377    o added Sadourny discretization of Coriolis
2378      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2379      - re-enabled use of omega3 (useAbsVorticity)
2380    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2381      vector-invariant equations
2382      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2383    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2384      hopefully without new bugs
2385      - still to do: biharmonic friction for non-hydrostatic w
2386    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2387    o regenerated output for global_ocean_ebm (using -ieee)
2388    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2389      of mom_common/
2390      - simple re-arrangement of instructions within computing loop
2391    checkpoint53d_pre
2392    
2393    checkpoint53c_post
2394    o new version of coupler for AIM+thSIce and Ocean models
2395     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2396     - land: change Evaporation of snow
2397     - aim with thSIce: fix bug in snow-precip.
2398    o changes to calc_gw.F
2399     - bug fix for w^2 term near the bottom boundary
2400     - (hopefully) improve the lateral slip boundary condtions for use with
2401        partial/looped cells
2402      - because the bug fix changes two verification experiments anyway (exp5
2403        and plume on slope), change the lateral boundary condition from half slip
2404        to the value of no_slip_sides
2405    o ebm package wasnt quite up to the parallel task. Fixed that.
2406    o Adjoint of EBM package + verification
2407      * TLM OK
2408      * ADM not sufficient accuracy yet (needs further testing)
2409    
2410    checkpoint53b_post
2411    o Commiting new energy balance model to repository
2412      * package is pkg/ebm
2413      * verif. is verification/global_ocean_ebm
2414      * references are in ebm_driver.F
2415    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2416    C        Global thermohaline circulation. Part I:
2417    C        Sensitivity to atmospheric moisture transport.
2418    C        J. Climate 12(1), 71-82
2419    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2420    C        Global thermohaline circulation. Part II:
2421    C        Sensitivity with interactive transport.
2422    C        J. Climate 12(1), 83-91
2423    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2424    C        Destabilization of the thermohaline circulation
2425    C        by atmospheric eddy transports.
2426    C        J. Climate 7(12), 1870-1882
2427    o Will need long integration testing.
2428    checkpoint53b_pre
2429    
2430    o created pkg/mom_common in preparation for variable viscosity code
2431    o renamed and split ini_mnc_io
2432    o pkg/land: only liquid water can diffuse or run-off
2433    o AIM using land: soil wetness availability account for snow
2434    o added printMapIncludesZeros to EEPARMS namelist
2435    
2436    checkpoint53a_post
2437    o restore TAMC compatiility for exf_constants.h
2438      (no usage of _d in .h)
2439    o Additional storing in KPP in an attempt to fix
2440      TAMC problem with adjoint of KPP code.
2441      (no success...)
2442      Identical code works fine with TAF.
2443    o Fixed verification/natl_box_adjoint experiments.
2444      Initial conditions for Experiments 4 and 5 are now
2445      set to "SEAICE_initialHEFF=0", which is more reasonable,
2446      and hence gives results closer to that of Experiment 2.
2447      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2448    
2449    checkpoint53
2450    o stable checkpoint with up to date adjoint
2451      TLM tests only run for 1st grdchk at the moment. Its unclear if
2452      this is a code problem or a problem with resetting code for g_
2453      variables that is being autogenerated wrong.
2454      Otherwise:
2455       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2456       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2457         are both still in chaos following their security messes.
2458    
2459    checkpoint52n_post
2460    o various build (mostly genmake2) changes including:
2461      - ability to build/run more easily within Cygwin and MacOS X
2462      - more complicated Makefiles with a stronger dependence on Gnu Make
2463    o pkg/seaice modifications
2464      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2465        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2466        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2467      - changed proxy for geostrophic velocity and updated
2468        verification/lab_sea/results/* accordingly
2469      - removed ADI dynamic solver from pkg/seaice
2470      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2471        they caused a segmentation fault under certain circumstances
2472      - removed unused field WATR
2473    o bug fix in exf-package:
2474      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2475         now reflect that.
2476    o small fixes in the cal-package:
2477      - set reference date to first of January for the 'model'-calendar
2478      - failing of cal_CheckDate in cal_FullDate now actually results in a
2479        warning
2480    o small modifications in exf-package to increase flexibility:
2481      - change climtempfreeze from a constant to a runtime parameter that
2482        is specified in data.exf_clim (default = -1.9)
2483      - introduce runtime parameter windstressmax (default = 2.0) that is
2484        specified in data.exf
2485    o fix in pkg/thsice:
2486      - update Evap (Tsf changes) to be consistent with Latent heat flux
2487      - maintain snow precipitation unchanged (even if Tsf >=0).
2488     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2489    
2490    checkpoint52m_post
2491    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2492      this does not change any of the results, because myIter=0 in swfrac always
2493      lead to jwtype=2 (the default anyway), but the call makes little sense
2494      as a default
2495    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2496    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2497      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2498    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2499    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2500    o extending useSingleCpuIO option to work with new exch2 I/O format
2501      - old-style, missing-tile I/O is still accessible by defining CPP
2502        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2503    o monitor package can write to NetCDF files and/or STDOUT
2504    o fix re-definition bug in MNC_GRID_INIT_ALL()
2505    o doc/api_reference added
2506      - a framework for building an API Reference Manual using all
2507        the "protex" comments embedded in the code
2508      - see pkg/generic_advdiff, pkg/mnc for examples
2509    o MNC:
2510      - make myThid the last argument for all subroutines
2511      - new default for the grid files: NO halos
2512      - add useMNC and other run-time flags
2513      - separate per-file-group handling of the unlimited dimension
2514      - early initialization of MNC w/ flags read at the eeboot stage
2515        and lookup tables set in initialize_fixed
2516      - write all MNC output to a freshly-created directory
2517    o thermodynamics sea-ice (thsice) is now tested with testreport.
2518    o test exp. advect_cs: use the standard cs32 grid ; update output.
2519    o Added functionality to grdchk:
2520      pick global i,j,k position (or nearest wet) where to perform check.
2521    
2522    checkpoint52l_post
2523    o new land formulation:
2524      a) use ground enthalpy as prognostic variable to ensure exact
2525         energy conservation.
2526      b) account for water temperature and for latent heat of freezing
2527         in all processes (rain, run-off, ground storage)
2528      c) compute surface and ground temperature implicitly.
2529    o aim_v23 modification for new land model:
2530      a) Treat separately land / ocean / sea-ice surface fluxes
2531         to allow implicit computation of land & sea-ice surface temp.
2532      b) add snow precipitation.
2533    checkpoint52l_pre
2534    
2535    o fix problem (when 1 tile is empty) in min/max monitor.
2536    o fix bug in timeAve (u,vZetatave in common block)
2537    o no restoring terms under ice for pkg/seaice
2538    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2539    o bug fix for pkg/seaice pickups
2540    o change MNC call locations and add coordinate attributes
2541    o mask vorticity at the corner ; affects global_ocean.cs output
2542    o fix ini_curvilinear_grid ; test CS experiments with mpi
2543    o aim.5l_cs: modify sea-ice fraction input file ; update output
2544    o exf: Adding simple range check routine for exf fields after read
2545    
2546    checkpoint52k_post
2547    o removed top-level directory "diags"
2548      - we migrated these functions to pkg/timeave a long time ago
2549    o fixed bug introduced in pkg/monitor
2550    o accuracy ctrlprec = 32 insuffient for gradient checks using
2551      averaged fields (I/O via cost_averages)
2552      -> use ctrl.h in active_file*.F to control I/O precision.
2553    o paramter list of CALL ADTHE_MAIN_LOOP
2554    o added initial do_the_model_io to ecco
2555    o set all ...Freq to zero after cost_final
2556      taveFreq, dumpFreq, pChkptFreq
2557    o MAIN and ECCO differentiability restored
2558    
2559    checkpoint52j_post
2560    o fix nchklev in tamc.h for global_ocean...
2561    o Bringing flow and store directives up-to-date
2562    o Really weird thing!
2563      call do_the_model_io from the_main_loop with parameters
2564      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2565      TAF places a faulty re-call of initialise_varia
2566      after cost_final call which should not be there!
2567    checkpoint52j_pre
2568    
2569    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2570      error messages
2571    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2572    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2573      debug output
2574    o modfied mdsio_writefield.F to handle non-global files under exch2
2575    o update AIM Cubed-Sphere exp (aim.5l_cs):
2576      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2577    o update AIM Equatorial Channel exp:
2578      use standard aim_v23 pkg and change the SST fields to be more realistic.
2579    o globalFile now works with exch2
2580    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2581      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2582    o limit timeave output for hi-res integrations
2583    
2584    checkpoint52i_post
2585    o removed CPP_EEOPTIONS.h from verification/*/code
2586    o updated the tiling for global_ocean_pressure
2587    checkpoint52i_pre
2588    
2589    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2590      the old pkg/aim).
2591    
2592    checkpoint52h_pre
2593    o shortened offending lines in exch2_send_rx?.template
2594    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2595    o genmake2: add build & execute test for NetCDF code
2596    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2597      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2598    o added useSingleCPUIO flag to monitor.F and mon_out.F
2599    o added temporary hack for sea-ice dynamics on the cube:
2600      metric terms are ignored and it is assumed that
2601      there is no sea-ice on cube faces 1, 2, 4, and 5.
2602    
2603    checkpoint52f_post
2604    o added exch2 cube routines to pkg/exch2
2605    o modified hs94.cs-32x32x5 to use it
2606    o added new grid files to hs94.cs-32x32x5
2607    checkpoint52f_pre
2608    
2609    checkpoint52e_post
2610    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2611      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2612    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2613      to work with implicit vertical advection and AB ;
2614    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2615    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2616     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2617    checkpoint52e_pre
2618    
2619    o fix bug in impldiff when Nr=1 or Nr=2.
2620    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2621    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2622    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2623      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2624    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2625    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2626    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2627    
2628    checkpoint52d_post
2629    o re-tiled many expts to allow comparison in multi-processor mode
2630      - updated output accordingly
2631      - changed hs94.128x64x5 to use intial T from file rather than use the
2632        random number generator
2633    o add infrastructure in model routines for fizhi and gridalt packages
2634    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2635    o changes to permit hi-res, cubed-sphere, configuration
2636      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2637      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2638      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2639        of surface winds for the cube
2640      (A verification experiment, based on global_ocean.cs32x15, but with
2641       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2642       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2643       complete with example surface forcing files and matlab scripts to look
2644       at the output and compare it with that of global_ocean.cs32x15.)
2645    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2646       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2647       to conform to the common rule.
2648    o check-in the first version of the coupler + interfaces for multi-components
2649       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2650       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2651       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2652       - ocean and atmos. share the same horizontal grid (no interpolation).
2653       - exchanges between component and coupler is done in forward_step
2654    o new verification experiment, cpl_aim+ocn:
2655       coupled ocean - AIM atmosphere on cs32 grid.
2656    
2657    checkpoint52d_pre
2658    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2659    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2660    
2661    checkpoint52c_post
2662    o Fixing OPTIONS files for use of exf:
2663      - ALLOW_ECCO not needed
2664      - ECCO_CPPOPTIONS.h should not be included from
2665        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2666        as has been the case in the past
2667      - All cal/exf related options are currently set in
2668        single header file. Should remain so until we
2669        agree on a consistent new policy.
2670    o Removed all CPP options for cal package.
2671      cal has no more CPP options.
2672    o modified STOREs in GAD_ADVECTION
2673    o corrected key comp. for passkey
2674    
2675    checkpoint52b_post
2676    o new version: "thsice" of thermodynamic sea-ice pkg:
2677     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2678     - modify fluxes but do not change theta directly;
2679     - light cleaning of bulk_force pkg (still needed with thsice).
2680     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2681       + output_thsice.txt to test thsice & bulk_force pkgs.
2682    o put back grid & coriolis monitor output.
2683    checkpoint52b_pre
2684    
2685    o call "do_the_model_io" at the beginning (=> dump initial state)
2686    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2687    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2688      (need info on NUMBER_OF_PTRACERS)
2689    o missing PTRACERS headers in some routines
2690    o default tamc.h in pkg/autodiff supposed to crash
2691      to ensure proper customization
2692    
2693    checkpoint52a_post
2694    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2695      - moved surfaceTendencyTice from pkg/seaice to main code
2696      - subroutine FREEZE_SURFACE now limits only surface temperature
2697        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2698        => new output.txt for global_ocean.cs32x15 & global_with_exf
2699      - keep the old version of FREEZE for backward compatibility;
2700        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2701      - corresponding modifs for TAF directives
2702    o added surface flux output variables to TIMEAVE_STATVARS
2703    o time-averaged output for pkg/ptracers
2704    o fix problem with ECCO-related divided adjoint
2705      snapshot file was missing some ad-variables,
2706      but no warning issued by TAF
2707    
2708    checkpoint52a_pre
2709    o some bug fixes for #undef REAL4_IS_SLOW
2710    
2711    checkpoint52 = ecco_c52_e35
2712    o after testing adjoints of checkpoint51u_post
2713    
2714    checkpoint51u_post
2715    o this is the post-merge tag of the ecco-branch
2716      (needs another clean checkout and re-testing)
2717    o various natl_box_adjoint configs and results
2718      but no input fields
2719    o obcs adjoint not yet merged!
2720    o adding ECCO global 1x1 and 2x2 degree configs
2721    o updated/extended some store directives for seaice
2722    o pkg/ecco now containes ecco-specific part of cost function
2723    o top level routines the_main_loop, forward_step
2724      supersede those in model/src/
2725      previous input data.cost now in data.ecco
2726      (new namelist ecco_cost_nml)
2727    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2728    
2729    checkpoint51t_post
2730    o this is the pre-merge tag of the ecco-branch
2731    
2732    checkpoint51s_post
2733    o cleanup: removed various obsolete #define-s
2734    o pkg/grdchk
2735      - renamed 'ph-grd 3' to 'grad-res'
2736      - merged from ecco-branch
2737        (remaining bug fixes for obcs gradient checks)
2738      - additional high-precision output for testreport
2739        (grep for 'precision_grdchk_result')
2740    
2741    checkpoint51r_post
2742    o cleaned up or removed CPP_OPTIONS.h files
2743    o updated results for some of the tests to reflect the new
2744      optfiles (-ieee: -O0 instead of -O3)
2745    
2746    checkpoint51q_post
2747    o cd_code:
2748      - moved cd_scheme.F -> cd_code_scheme.F
2749      - separate read_checkpoint from cd_code_ini_vars.F
2750      - separated cd_code part from write_checkpoint
2751      - updated AD_SOURCE, generated .flow
2752      - added CD_CODE_VARS.h to the_main_loop
2753      - Moving cd_code specific store dir.s to pkg/cd_code
2754    o ctrl package totally restructured
2755      - pack/unpack now optional and decoupled from
2756        xx_/adxx_ I/O
2757      - ctrl_pack/unpack cleaned
2758        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2759      - confined inclusion of AD_CONFIG.h to where necessary.
2760    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2761    
2762    checkpoint51p_post
2763    o create initial cd_code package
2764      - WARNING: the initialization of fields within packages
2765        is broken because INI_FIELDS (where READ_CHECKPOINT is
2766        called) is called *before* PACKAGES_INIT_VARIABLES.
2767        This seems to be backwards since
2768        1) its important to initially zero the entire field including
2769           the "halo" region
2770        2) zeroing needs to be done *before* reading pickup info
2771           and the pickup call might or might not happen in any
2772           particular run
2773      - this needs an overhaul for R2
2774    o cleanup verification/*/code/GMREDI_OPTIONS.h
2775    o cleanup testreport
2776    
2777    checkpoint51o_post
2778    o bringing AD-related verif's up to date with genmake2
2779      - carbon/
2780      - global_ocean.90x40x15/
2781      - hs.94.1x64x5/
2782      - (front_relax/ )
2783    o (more) consistent directory structure for AD-related verif.'s
2784    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2785    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2786    o bug fix in find_alpha.F for MDJWF:
2787      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2788        change rho -> rho-rhoConst
2789      - replace call find_rho to find_rhonum
2790    o initialisation of rFlx extended to full array (required by TAF)
2791      and shifted to thermodynamics
2792    o removed PTRACERS.h in ptracers routine
2793    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2794    o Correcting initialisations for fVerU, fVerV.
2795    o helping TAF to recognize dependency on kUp for
2796      fVerU, fVerV
2797    o Replacing delZ by delR in pkg/ctrl/
2798    checkpoint51o_pre
2799    
2800    o undid all of cp51 pending some cleanups and discussion
2801    o added the [#include "AD_CONFIG.h"] statement to all files that need
2802       it for adjoint/tl #defines
2803     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2804     o removed tools/genmake since it no longer works
2805    
2806    checkpoint51n_post
2807    o modifications to make FREEZE flux visible to pkg/kpp
2808      - moved surfaceTendencyTice from pkg/seaice to main code
2809      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2810      - subroutine FREEZE now limits only surface temperature
2811        (this means new output.txt for global_ocean.90x40x15,
2812         global_ocean.cs32x15, and global_with_exf)
2813    o added surface flux output variables to TIMEAVE_STATVARS
2814    
2815    checkpoint51n_pre
2816    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2817    o added [#include "AD_CONFIG.h"] to all files that use the following
2818      defines:
2819      - ALLOW_ADJOINT_RUN
2820      - ALLOW_TANGENTLINEAR_RUN
2821      - ALLOW_ECCO_OPTIMIZATION
2822    
2823    checkpoint51m_post
2824    o incorporating changes to get TAMC/TAF working in genmake2
2825      - added new TAMC/TAF targets to the Makefile
2826      - various cleanups related to package handling
2827      - these changes should have no impact on the forward model
2828    
2829    checkpoint51l_post
2830    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2831     - faster algorithm for cal_addtime.F
2832     - higher precision arithmetic, where needed
2833     - pkg/exf *startdate variables changed from calendar date to
2834       model integration time
2835    
2836    checkpoint51l_pre
2837    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2838    o enable to apply restoring on S & T only in a latitude band.
2839    o update output (external_forcing_surf modif. change truncation errors)
2840       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2841    
2842    checkpoint51k_post
2843    o change default to: useNHMTerms=.FALSE.
2844     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2845       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2846     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2847        exp1, ideal_2D_oce
2848     - change data file of oceanic exp (leave the results unchanged for now)
2849       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2850    o set gravitySign automatically according to the vertical coordinate used
2851      (and change sign: back to "logical" value: +1 when R increases downward)
2852    o added an include barrier to the default CPP_OPTIONS.h and
2853      removed the #include "PACKAGES_CONFIG.h" from it
2854    o fix a bug in mom_fluxform (from chk51j_post)
2855    
2856    checkpoint51j_post
2857    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2858    o adjusted some flow directives (dynamics, thermodynamics)
2859    o added cubed-sphere case to test cost function
2860    o heckpoint_lev?_directives.h now include
2861      pkg-specific directives, whenever those are enabled.
2862    o Moving pkg-specific flow directives to corresponding pkg
2863      Moving pkg-specific differentiation list to corresponding pkg
2864      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2865      ---> conventions are
2866           - pkg_ad.flow
2867           - pkg_ad_diff.list
2868           - pkg_ad_check_lev?_dir.h
2869    
2870    checkpoint51i_post
2871    o merge of the branch-genmake2
2872      - knowingly breaks the older genmake
2873      - automatic generation of all ALLOW_${PKG_NAME} defines
2874      - new testreport supersedes older testscript
2875    o large number of package inclusion and header cleanups
2876    checkpoint51i_pre
2877    
2878    o new output for adjoin of global ocean vector invariant
2879    o fix for checkpoint of thermodynamic seaice and bulk_force
2880    o Steph gchem various cleanups
2881    
2882    checkpoint 51h_pre
2883    o fixed some single quotes
2884    o modify gchem pkg to be more versatile
2885    o modifications to clean up dic pkg
2886    o add pkg/cfc
2887    
2888    checkpoint51g_post
2889    o provide links for ARPACK and ADM*TLM
2890    o start removing verification/vero/
2891    o update AD-related stuff
2892      (in particular some IF-statements in model/src/ routines)
2893    o adding to verification/global_ocean.90x40x15/ adjoint of
2894      vector invariant setup
2895    
2896    checkpoint51f_post
2897    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2898    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2899      of tracer Green's fucntions for ocean inversion project.
2900    
2901    checkpoint51f_pre
2902    o Added on-the-fly spatial interpolation capability
2903        "USE_EXF_INTERPOLATION" to pkg/exf.
2904      - This is a temporary Cartesian-grid hack until
2905        the super-duper ESMF coupler becomes available.
2906      - See verification/global_with_exf/README for usage example.
2907      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2908        flags and modified pkg/seaice accordingly.
2909    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2910        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2911        non-local transport term.
2912    
2913    checkpoint51e_post
2914    o pkg/mom_vecinv:
2915      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2916      - add time-ave diagnostic of vorticity advection.
2917    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2918    o atmospheric geopotential: - include water vapor effect;
2919                                - use p^kappa in p* scaling.
2920    o land pkg: read initial state from files.
2921    o AIM : add stratospheric drag in the upper level
2922    
2923    checkpoint51d_post
2924    o change function ILNBLNK (=> last non-blank char.) to return zero
2925      (instead of the string length) when the string. char is empty
2926    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2927    o modif's to restore TAMC compatibility
2928      - avoid "_d" constructs in PARAMETER declarations
2929      - avoid interrupting lines by comment lines
2930    o Use cluster local disks for purely local I/O
2931      vs. globally visible disks needed for ctrl stuff
2932      (merged from ecco-branch)
2933      - new active_file_loc... and mdsio_..._loc routines
2934      - affected packages: autodiff, ctrl, grdchk, mdsio
2935    
2936    checkpoint51c_post
2937    o introducing integer flag debugLevel
2938      - debLevZero: suppress all output
2939      - debLevA: standard
2940      - debLevB: equivalent to current debugMode=.TRUE.
2941    o introducing pathname variable mdsioLocalDir for mdsio
2942      that can be specified at runtime
2943      (relevant for cluster I/O to local disk)
2944    `
2945    >>>checkpoint51b_post
2946    adjoint of ptracers
2947    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2948    o extended state in checkpoint_lev?, etc.
2949    o alternative ctrl/cost with tr1 or ptracer
2950    o new comlev1_bibj_ptracers
2951    o new ptracers.flow
2952    o made ptracers_forcing same as external_forcing_s
2953    o added verification for adjoint with ptracers
2954      - adm. grdchk fail so far
2955      - tlm. grdchk OK
2956      - checked tapelev/comlev recomputations: OK
2957    <<<checkpoint51b_pre
2958    
2959    checkpoint51a_post
2960    o added code for biogeochemistry package
2961      - new pkgs: dic, gchem
2962      - new subroutine in ptracers
2963    o modify code for biogeo packages
2964      - in model/src and pkg/ptracers
2965    
2966  checkpoint51  checkpoint51
2967  o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN  o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2968    - autodiff, ctrl, exf, grdchk, seaice    - autodiff, ctrl, exf, grdchk, seaice

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