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revision 1.232 by jmc, Wed Dec 31 20:29:54 2003 UTC revision 1.1071 by jmc, Fri Feb 27 02:05:04 2009 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 non-hydrostatic (calc_gw.F):
8      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
9      update output of exp. global_ocean.cs32x15.viscA4
10    o remove backward compatibility for thetaMin,phiMin
11      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
12    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
13      interpolated wind field not only for curvilineargrid=.true., but also
14      for a rotated grid (rotateGrid=.true.)
15    o pkg/exf: add capability to bypass interpolation for runoff
16      by setting yet another CPP-flag
17    o eesupp/src, B-grid exchange:
18      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
19    o autodiff
20      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
21      allows to switch to single-prec common blocks;
22      corresponding switch occurs in tamc.h, integer isbyte
23      TAF store directivs "byte" and "kind" seem equivalent;
24      Most tamc.h have been updated correspondingly.
25    
26    checkpoint61i
27    o autodiff:
28      fix autodiff_sore/_restore indices for obcs
29      (spotted by I. Hoteit, M. Mazloff)
30    o pkg/autodiff, pkg/ctrl:
31      Add flag to reduce all tapelev I/O to single-prec.
32      In data.ctrl set
33        doSinglePrecTapelev = .TRUE.
34    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
35      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
36    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
37      real fresh water flux (not yet)
38    o pkg/mdsio & rw:
39     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
40     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
41    o pkg/flt:
42     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
43       init_fixed & ini_varia.
44     - clean-up & simplify linear interpolation S/R:
45       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
46     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
47     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
48     - add vert. coordinate & horiz. indices to output files.
49     - change vertical position in initial condition, from index to depth [m].
50     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
51       (easier to get to a curvilinear grid) ; delX,delY no longer used.
52    o pkg/ggl90: a few modifications:
53     - fix bottom boundary condition, and interpolation of KappaE
54       near top and bottom
55     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
56     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
57     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
58    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
59      (maintain temporary backward compatibility, until next checkpoint)
60    
61    checkpoint61h
62    o pkg/diagnostics with "periodic averaging diagnostics":
63      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
64    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
65    o pkg/obcs: fix loop ranges for balancing code
66    o pkg/flt:
67     - improve criteria for finding which tile owns a float.
68     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
69    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
70      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
71      with ocean biogeo)
72    o pkg/flt:
73     - do some cleaning and fix the restart ;
74     - add output.txt in flt_example/results to get this pkg tested.
75    o genmake2: add an EXTENDED_SRC option and flag.
76       for now, cannot be turned on on command line (only through genmake_local)
77    o pkg/mdsio: read/write vector:
78     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
79     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
80       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
81     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
82      (drop to 4 digits matching for grad). But this test does not look very
83      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
84    
85    checkpoint61g
86    o pkg/flt:
87      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
88       + make OPTIONS file more standard.
89      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
90      - fix _BYTESWAPIO CPP-Flag
91      - standard reading of file-parameter "data.flt"
92      - fix argument list of S/R FLT_RESTART
93      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
94    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
95    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
96      a still unfixed compiler/optimization bug
97    
98    checkpoint61f
99    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
100      update results of global_ocean.cs32x15.icedyn test.
101    o move getcon.F from model/src to pkg/fizhi.
102    o pkg/exf: add parameter for extrapolation of temp up to the surface
103       and option to prevent negative evap (in bulk_largeyeager04 only).
104    o Prather Advection scheme: fix tracer conservation for divergent flow
105      (e.g., when using NonLin Free-Surface).
106    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
107    o gmredi (Visbeck-variable-K):
108     - add more parameters to Visbeck-variable-K.
109     - use a 5 points average for dSigmaR in Visbeck-K calculation
110       (more "homogenous": same stencil and same weights as in dSigmaH)
111     - update output of ideal_2D_oce experiment.
112    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
113      (#undef REAL4_IS_SLOW)
114     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
115       coordinate variable
116     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
117       (surface forcing fields), removes some of the functionality
118     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
119     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
120       probably not all: copy _RS surface flux fields to RL field before
121       calling DIAGNOSTICS_FILL
122     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
123       real*4 (CALL EXCH_*_RS) versions.
124     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
125       (generate new output).
126    
127    checkpoint61e
128    o gmredi (Visbeck-variable-K):
129      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
130      - change computation of Visbeck-K where Slope > Smax :        
131        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
132        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
133    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
134      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
135    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
136    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
137      does not become too large (to avoid precision problems in implicit-diffusion
138      solver); update ideal_2D_oce output.
139    o pkg ggl90:
140      - in ggl90_cal.F: compute only one set of visc/diff, used to
141        step forward TKE/T/S/momentum
142      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
143        have Prandlt =1)
144    o gmredi (fm07):
145      - add lower limit on Transition layer thickness + lower limit on 1/lambda
146      - allow to set few more params from data.gmredi
147    o pkg ggl90:
148          - add missing sqrt(2) factor in computation of mixing length
149            scale in ggl90_calc.F
150            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
151    
152    checkpoint61d
153    o adjoint modifs
154      - adapt to new field rhoInSitu
155      - allow to revert from StoreDynVars2D, StoreDynVars3D
156        to individual fields
157        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
158    o store 3-D (in-situ) density in commom block (DYNVARS.h)
159     - save 1 rho computation.
160     - no longer modify T & S inland when using down_slope pkg.
161    o gad_som : allow to switch to SOM advection for T & S without corresponding
162      pickup files (using new S/R: MDS_CHECK4FILE).
163    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
164      (for useSingleCpuIO to work in multi-threaded)
165    o pkg/shelfice:
166     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
167       with SHELFICEtopoFile in data.shelfice
168     - move code for reading ice shelf topography and modifying hFacC into separate
169       subroutines of the shelfice package
170     - separate initialisation of "fixed" and "variable" variables
171     - kTopC is not (yet) replaced by kSurfC, although this is possible
172    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
173    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
174      and rename:
175      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
176      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
177    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
178    
179    checkpoint61c
180    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
181      to add mass source/sink of fluid in the interior (3-D generalisation
182      of oceanic real-fresh water flux).
183    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
184    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
185    o new pkg: down_slope
186      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
187      - presently, modify T & S inland (dwnslp_calc_rho.F).
188        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
189      - implementation for ocean in P-coords not tested.
190      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
191    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
192      (to facilitate conversion of oceanic pkg to p-coordinate).
193    o change FIND_RHO to FIND_RHO_2D :
194      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
195    o new pkg: cheapaml
196    
197    checkpoint61b
198    o exch2:
199      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
200      - no longer depend on the order sequence (N,S,E,W).
201      - 3rd exchange no longer needed (tested with 24 tiles).
202      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
203      - exch_UV_A-grid readily available (but not yet tested).
204      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
205      (both are no longer needed) in exch_uv: no effect in forward run; but
206       get truncation error differences with adjoint exch.
207    o exch2:
208     - change index-bounds storage (moved from target to local tile,
209       more intuitive this way) ; rename/remove some variables.
210     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
211    
212    checkpoint61a
213    o exch2/matlab-topology-generator:
214      fix bug in index bounds for N-S internal exchange (hard to tell if this
215      had any effect on the solution).
216    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
217      is exceeded
218    o testreport: modify syntax of awk, so that it works also with
219      awk, and not only with nawk and gawk
220    
221    checkpoint61
222    o autodiff
223      Change default for TAF usage by removing argument '-nonew_arg'
224      This changes TAF subroutine argument list (ordering of active var.)
225      Omission of this flag leads to incompatibility w.r.t. TAMC
226      To restore TAMC-compatibility, need following modifs:
227      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
228      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
229      Tested TAF version is 1.9.22
230      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
231    
232    checkpoint60
233    --->>> This is the last checkpoint for which generating the adjoint
234    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
235    --->>> by default.
236    --->>> Future checkpoints will ommit this flag by default.
237    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
238    o pkg/grdchk: Add gradient check to etan0 perturbations.
239    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
240    o pkg/autodiff: more flexibility in zeroadj.
241      model/src: modifying do_oceanic_phys.F accordingly.
242    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
243    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
244      special setup of gmredi for which the adjoint is stable
245      enough for parameter optimization.
246    o bridging the gap between eddy stress and GM.
247      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
248          along with a change in CPP option (now ALLOW_EDDYPSI).
249      -> when using GM w/ GM_AdvForm:
250          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
251          is applied either in the tracer Eq. or in momentum Eq.
252          depending on data.gmredi (intro. GM_InMomAsStress).
253      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
254      The key modifications are in model/src/taueddy_external_forcing.F
255      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
256    
257    checkpoint59r
258    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
259      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
260      fix option to read coriolis(@ cell-corner) from files with CS-grid.
261    o pkg/mnc: add some attributes to standard 1D-coordinate variables
262    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
263      mass points, when using mnc for output
264      - add runtime parameter (missing_value, missing_value_int) to override
265        default (which is the value of getcon('UNDEF'))
266    o pkg/mnc: prepare mnc for the actual use of missing values with the
267      diagnostics package: small fix in mnc_cw_readwrite.template and more
268      initialisation of never used fields
269      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
270      versions
271    o pkg/thsice/thsice_ini_vars.F added default initial values so that
272      thermodynamics sea ice solver does not blow up when some initial fields
273      are missing.
274    o move from external_forcing_surf.F to ini_forcing.F
275      the p-coord. hack consisting in using pLoad to set phi0surf ;
276      update output of tutorial_global_oce_in_p (affected @ truncation level).
277    o Freshen up a bit hs94.1x64x5, notably:
278      remove rotationPeriod and tRef=5*0. (adjoint only), and add
279      exactConserv=.TRUE.
280    o pkg/generic_advdiff:
281      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
282      applies to files where Temperature & Salinity 2nd Order moments are used.
283    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
284      this uses a dynamically allocated internal state data structure
285      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
286      and requires a fortran 90 compiler
287    
288    checkpoint59q
289    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
290       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
291    o Refresh tutorial_global_oce_biogeo, notably:
292      - change bathymetry (put back seamounts in ACC, use hFacs)
293      - change EOS (POLY3 --> JMD95Z)
294      - use Bryan-Lewis vertical diffusivity
295      - use multidimensional advection
296      - remove old virtual virtual in dic pkg, now done through ptracer pkg
297      - change a couple of parameters in dic pkg
298    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
299    o pkg/obcs: change default to OBCSfixTopo = .true.,
300      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
301      - replace "debugMode" with "debugLevel .GE. debLevB"
302    o implementation of TAF directives for gchem,cfc,dic
303    o remove "exp5" (replaced by tutorial_deep_convection).
304    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
305      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
306      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
307      --> changes results in exp4, seaice_obcs
308    o tutorial_deep_convection :
309      update the set-up and increase resolution and domain size ; start
310      from pseudo initial conditions = output at t=120mn in order to see
311      something happening when running testreport.
312    o pkg/seaice: add os7mp as an advection scheme
313                  add check for advection schemes
314                  add a flag for restoring T and S underneath sea ice
315    o pkg/my82: add netcdf-support and diagnostics
316    o thsice pkg:
317      - Now hsMax limits snow height by turning it into ice following
318        flooding scheme (and now conserving energy)
319      - Slight rewriting of the formula in thsice_calc_thick.F
320      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
321      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
322    
323    checkpoint59p
324    o gchem / dic / cfc :
325      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
326      - add new parameter files: "data.dic" & "data.cfc" ;
327      - various re-arrangement in initialisation & header file ;
328      - fix tutorial_global_oce_biogeo for multi-threaded test.
329    o pkg/dic: test for "pickup_dic" file when restarting ;
330      if no pickup-file, can restart with a re-initialised pH (same as it did
331      before) providing pickupStrictlyMatch is set to False.
332    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
333      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
334    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
335      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
336    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
337     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
338       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
339    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
340       scheme to use for vorticty-term ;
341     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
342       (with default selectVortScheme, return to original discretisation)
343     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
344    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
345    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
346      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
347      also fix diagnostics VISCAHW & VISCA4W.
348    
349    checkpoint59o
350    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
351    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
352      move a few statemens out the main loop into separate loops
353    o pkg/shelfice:
354      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
355        (kg/m^2/s), does not break tests, because in verification/isomip,
356        rhoConstFresh=rhoConst (by accident)
357      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
358      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
359        new file model/src/seawater.F, so that they are available for all pkgs.
360      - convert potential temperature into in-situ temperature. This changes the
361        isomip tests => update tests
362    o add a flag writePickupAtEnd (default=true) to be able to suppress
363      writing a pickup at the last timestep
364    o tools/mpack-1.6 :
365      - disable automake (not working) and autoconf (not needed).
366      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
367        also cleaner with much less compilation warnings.
368    o pkg/profiles:
369      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
370      (for "less than 32 characters name" compiler requirement)
371    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
372      conditions that have a different sampling frequency than S/T/U/V obcs
373    o pkg/diagnostics (stats-diags):
374      - fix global Min/Max in case 1 processor get only empty tiles
375    o genmake2: replace (4 times)
376         make genmake_tc_1.o >> genmake_warnings 2>&1
377      with
378         COMM="$CC $CFLAGS -c genmake_tc_1.c"
379         echo $COMM >> genmake_warnings
380         $COMM >> genmake_warnings 2>&1
381      to make genmake2 always see the value of CC as specified in the optfile.
382    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
383      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
384      - modify verification advect_cs test to test SOM-advection on CS-grid.
385    o pkg/ctrl:
386      - Rewrite of ctrl_map_ini_ecco.F,
387        introducing a generic routine (ctrl_map_ini_gen.F).
388      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
389    
390    checkpoint59n
391    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
392      number in dedicate array "hdiag":
393      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
394        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
395      - many small changes (integer format) for large number of diagnostics
396      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
397        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
398    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
399      usingSphericalGrid, this allows to define the rotated grid coordinates
400      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
401      geographical coordinates according to the inverse of the rotation defined
402      by the Euler angles, so that Coriolis parameter and online-interpolation by
403      exf works with the geographical coordinates on XC/YC/XG/YG.
404      Naturally, this feature does not work with all packages, so some
405      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
406      profiles), because there the coordinates are assumed to be regular
407      spherical grid coordinates.
408    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
409      - introduce isopycnal diffusion coefficient control.
410    o tools/adjoint_options:
411      - additional control vector components.
412    o pkg/mnc: have mnc create marginally meaning full coordinate variables
413      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
414    o pkg/mypackage:
415      - add example of read/write pickup for state-var ;
416      - add entry points to the main code for state-vars diags & write-pickup.
417    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
418      transitions for useExfYearlyFields
419      - add new subroutine that determines the file to read from for
420        use*YearlyFields = .TRUE. and .FALSE.
421      - add a verification experiment to global_with_exf that tests
422        useExfYearlyFields with USE_EXF_INTERPOLATION defined
423    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
424      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
425      subroutines (which could be generated from a template, because they are
426      almost identical), for now they are included in obcs_prescribe_read.F for
427      simplicity
428    o pkg/exf:
429      - add a little more diagnostic to exf_interp_read (in analogy to
430        mds_read_field, can be turned off with debugLevel < debugLevA=1)
431      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
432        ugly but fast by unrolling short inner loops, inserting a unroll=8
433        directive in routine lagran, and splitting a loop and making do while the
434        outermost loop (the latter requires the intoduction of index arrays)
435    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
436    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
437      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
438    o verification/seaice_obcs: updated for restart test and latest options
439    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
440      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
441      for now this is only available for the C-grid code and also within
442      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
443    
444    checkpoint59m
445    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
446      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
447    o gad_som : fix flux output (& diagnostics) to have same units as other  
448      advection scheme fluxes (was previously multiplied by deltaT).  
449    o added verification/seaice_obcs both to test seaice open boundaries
450      and to provide an example matlab scrpt for generating them
451    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
452    o pkg/salt_plume: clean up salt_plume_frac.F to
453      remove redundancy in PlumeMethod 1 and 4
454    o pkg/kpp: added saltplume diagnostics
455    o pkg/obcs and pkg/seaice:
456      - do not set uice and vice to zero when OB*icefile are unspecified
457      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
458      - moved seaice tracer obcs after call to seaice_growth
459    o pkg/salt_plume: added various options for salt plume depth
460      criterion and for vertical distribution of the salt
461    
462    checkpoint59l
463    o pkg/ptracers: new version of ptracers pickup:
464      read meta file and write only fields which are needed to restart.
465      ( same logic as main pickup file ; also using pickupStrictlyMatch )
466    o pkg/seaice:
467      - add timescale for melting due to warm mixed layer as a means of
468        setting SEAICE_availHeatFrac more conveniently
469      - add a CPP-flag/runtime parameter check for flooding algorithm
470      - reformulated availHeat in seaice_growth.F to be independent of AREA
471    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
472      unit changes
473    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
474    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
475      SX vector computer.
476    o pkg/seaice:
477      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
478        seaice forcing fields can now be read only through pkg/exf
479      - removed some unused halos
480    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
481    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
482      or U/VICE from U/VWIND before computing U/VSTRESS
483    
484    checkpoint59k
485    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
486      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
487    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
488      all experiments pass when compile with un-initialised var. checking option.
489    o added pkg/salt_plume
490    o script to test restart (for now, in MITgcm_contrib/jmc_script)
491    o pkg/seaice: new read/write pickup version.
492      read meta file and write only fields which are needed to restart.
493      ( same logic as main pickup file ; also using pickupStrictlyMatch )
494    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
495    o lab_sea.hb87: modify the domain & update output.hb87.txt :
496      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
497      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
498      process. Fixed here by closing the domain at the Northern boundary.
499    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
500    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
501      a set of consecutive levels in/from a 3-D array.
502    o pkg/ptracers:
503      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
504      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
505    
506    checkpoint59j
507    o in pkgs: dic, obcs, offline, rbcs:
508      standard way to compute coeff. for time interpolation between 2 time reccords
509      which retains full precision (& make results less dependent on compiler).
510      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
511    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
512      packages instead of reading ice cover and wind speed separately
513    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
514     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
515      to allow to compile customized code before the update)
516    o cleaning-up:
517      - fix CPP instruction syntax in pkg/obcs
518      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
519        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
520      - fix some threads issue in IO parts.
521    o pkg/dic:
522      - add tons of "_d 0" (--> much better testreports !)
523       and then update outputs of tutorial_global_oce_biogeo
524    o pkg/mom_fluxform:
525      add a special version of momentum advection intended to conserve momentum
526      next to a bathymetry step or a coastline edge. (default = off = #undef)
527    o new read/write pickup version:
528      - for now, only implemented for main (mdsio) pickup file.
529      - write out only what is needed to restart; merge pickup_nh , pickup_ph
530        and main pickup together.
531      - read meta file; read only what is needed to restart; stop if a field
532        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
533        if it make sense (even if the restart is not perfect).
534      - if no meta file, assume that pickup to read corresponds exactly to
535        a pickup that would currently be written.
536      - read pickup written in the old format (until checkpoint59i) if it
537        recognizes an old meta file (no field-list).
538      - add a meta file in exp. which starts from a pickup: 2 cases:
539        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
540         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
541        b) a meta file describing the content of the associated pickup file
542         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
543    o pkg/mdsio & pkg/rw:
544      - new routine to read a meta file ; new set of routine to read
545        Multiple-fields file (with meta file).
546    o added open boundary conditions capability for seaice
547        HSNOW, HSALT, UICE, and VICE
548    
549    checkpoint59i
550    o adjoint:
551      * fix multiDimAdvection adjoint
552        (partial recomputation problem by TAF for fVerT(:,:,kDown)
553        and comlev1 size definition (maxpass vs. max. number of tracers)
554      * verification/global_ocean.90x45x15 adjoint now tests
555        NLFS and multiDimAdvection using DST3 (=30)
556      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
557    o pkg/kpp: add "_d 0" to real constant (if missing);
558      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
559      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
560    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
561      for internal parameters related to restart process (formerly from PARAMS.h)
562      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
563    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
564      as argument. (only atm2d & obcs write_pickup have not yet been updated)
565    o pkg/monitor:
566      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
567      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
568      - account for deep Atmosphere factor and density factor (anelastic)
569    o added open boundary conditions capability for seaice HEFF and AREA
570    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
571      thermodynamics
572      - requires a little reorganization, which affects the testreport results
573        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
574        so that now the conservative form is tested
575      - add a few comments
576    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
577    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
578    o add new diagnostics to seaice: advective, diffusive fluxes (only for
579      multidim-advection, for scheme 2 they are not filled) and transports,
580      thermodynamic growth rates
581    o change units of EmPmR (inside the code, + within coupling interface)
582      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
583      Affects results @ truncation level (cg2d match) and update output of
584       experiments: lab_sea(6), global_ocean.90x40x15(10),
585      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
586      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
587      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
588      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
589    
590    checkpoint59h
591    o pkg/exf:
592      - improve vectorization by moving if-statement out of loops in
593        exf_mapfields, exf_radiation
594      - exf_bulkformulae.F: introduce 2D fields and vectorize code
595    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
596    o testreport:
597      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
598        monitor & update offline_exf_seaice exp. output.
599      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
600    o pkg/seaice:
601      - bug fix in the evp solver: boundary conditions were affected be
602        masking of zMax/zMin (changes results)
603      - minor bug fix in boundary conditions in seaice_calc_strainrates
604        (changes results for no_slip)
605      - seaice_lsr.F: make interpolation of eta dependent on boundaries
606      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
607      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
608        stress formulation and no-slip boundary conditions
609    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
610      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
611    o pkg/seaice: a first HSALT time stepping equation has been checked in
612    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
613      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
614      without requiring DO-IF statements
615    o pkg/thsice:
616      use continuous power-law function for partition of energy between lateral
617      melting/freezing and thinning/thickening ; old code using step function
618      still available with #undef THSICE_FRACEN_POWERLAW
619      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
620    o testreport: change AD testing : check against results/output_adm.txt
621      using same scripts as for forward test.
622    
623    checkpoint59g
624    o adjoint testing: in preparation for changing testreport:
625      - output format: cost and grad written on separated lines
626      - ad output results in directory "results" (instead of "results_ad")
627    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
628    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
629    o pkg/ecco: allow user defined cost function contributions
630    o testreport:
631      Allow to choose (per experiment) the list of tested output variables
632       and the main variable (used to issue a pass/FAIL ) ;
633      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
634      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
635      Also modify printing of summary:
636       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
637       b) echo the list of tested variables in the individual summary.txt of
638          each experiment.
639    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
640      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
641      (but still depend on the tile decompostion of the domain).
642    o pkg/seaice: change a discretization detail to make the B-grid code
643      "more symmetric". This change is likely to remove all "ridges/leads" that
644      where quasi-aligned with the grid in B-grid solutions. It may also be
645      the solution to the stress coupling issues with the B-grid.
646    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
647      remove .cvsignore from input dir. (since testreport no longer run here).
648    o pkg/thsice:
649     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
650     - fix reshaping of sea-ice just after advection:
651       melt all the ice only if ice-volume is too small.
652     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
653       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
654     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
655    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
656      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
657    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
658      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
659      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
660      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
661      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
662      -> update output.txt
663    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
664     this affects truncation error: -> update output.txt of exp:
665      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
666      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
667    
668    checkpoint59f
669    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
670    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
671      a bounded range (in forward mode)
672    o pkg/ecco, ctrl, autodiff and mom_common:
673     internal parameter controls, completements of implementations
674    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
675    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
676      (not seem any difference in testing results).
677    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
678       at face corners.
679    o pkg/generic_advdiff:
680     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
681      loop range indices for computing vertical advection tendency
682      and do the calculation in the interior only (no overlap) ;
683      for now, only implemented for SOM advection (to save CPU time).
684     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
685    o exch2 adjoint
686      First set of changes:
687      - add exch2 hand-written adjoint templates
688      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
689        This will require cleanup in pkg/autodiff/*.F
690        (changed routines currently kept separate in verif. code/)
691      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
692        that used to hide exch2 or cubed-sphere specific code
693        (commented via 'cph-exch2')
694    o pkg/seaice
695      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
696    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
697       output of global_ocean.cs32x15.thsice .
698    
699    checkpoint59e
700    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
701      for B-grid vector (not yet tested) and C-grid vector (<- only used
702      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
703    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
704      (#ifdef ALLOW_SALT_PLUME)
705    o gather_2d/scatter_2d: removed halo regions
706    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
707      scheme and the corresponding test case (under front_relax dir). For now,
708      only available with Skew-flux form and not yet tested in realistic set-up.
709      adjoint: store directives updated, but gradient checks deteriorated,
710      so maybe GM/Redi adjoint is now broken.
711    o seaice adjoint
712      * add AREA, HEFF, HSNOW as control variable
713        (should not change lab_sea results)
714      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
715    o pkg/seaice:
716      * added computation of saltFlux in seaice_growth;
717        For time being, sea ice salinity is assumed constant
718        contribution of snow flooding to freshening of sea ice is neglected.
719        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
720        defaults to 0.0 in order to maintain backward compatibility.
721        Typical values for SEAICE_salinity are 4 to 10 g/kg.
722      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
723      * added SEAICE_availHeatFrac, which specifies fraction of surface level
724        heat content used to melt or grow ice
725      * commented out cap of HICE: it helps keep ice thinner
726      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
727      * applied OBCS T/S mask to HEFFM sea ice mask
728    
729    checkpoint59d
730    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
731     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
732     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
733    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
734     and change default value of parameter "GM_Small_Number";
735     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
736       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
737       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
738    o pkg/ecco: cost function when applying pkg/smooth to controls
739    o pkg/ctrl: add forcingPrecond run time parameter
740    o pkg/seaice:
741     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
742     - fix bug in metric terms of u-equation in LSR solver (implicit part),
743       changes verification/lab_sea
744     - rearrange implicit part of u-equation in LSR solver to make it easier to
745       read, understand, and debug. This causes changes at the truncation level.
746     - fix (serious) bug in the boundary conditions (sign error in the implicit
747       part) of the LSR solver. Changes all LSR results.
748     - fixed problem with HSNOW initialization to avoid thick snow when AREA
749       is initilized with small values - does not change lab_sea results.
750     - added HsnowFile initialization capability
751    o pkg/smooth: addition to model/src and pkg/ctrl so allow
752     initialization of pkg/smooth and application to control vector
753    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
754    o dependencies: pkg/profiles requires pkg/cal
755    o pkg/profiles:
756     - added option ALLOW_PROFILES_GENERICGRID
757         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
758         that interpolation information (grid points and coefficients) is provided
759         within the netcdf input files.
760         -> sample matlab scripts can be found in MITgcm_contrib/gael
761         that allow you to prepare netcdf input files.
762     - also modified: cleaner include statements, cleaner error print statements,
763       cleaner stops when error, and more tests of the netcdf input files consistency.
764    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
765    o pkg/seaice:
766     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
767       requires a new routine: seaice_diagnostics_fill.F
768     - make sure that seaice does not move if not forced (pressure replacement
769       method, Hibler and Ip, 1995), changes results
770     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
771     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
772       It is turned off by default (=-1.), because it changes the results.
773     - make it possible to read AREA from a file, too.
774    
775    checkpoint59c
776    o add S/R and diagnostics for oceanic mixed-layer depth
777    o move GMRedi call after all vertical mixing schemes (including KPP)
778    o pkg/thsice:
779     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
780      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
781    o pkg/obcs:
782     - bug fix for balance code
783    o pkg/seaice:
784      - allow values of SEAICE_elasticParm > 1
785      - add new parameter SEAICE_evpTauRelax as an alternative
786        to SEAICE_elasticParm
787      - make lsr boundary conditions free slip (by default), changes result
788      - add code for no slip boundary conditions for lsr
789      - set minimum of zeta to zero (and not 4e8) (changes results)
790      - add a cap on AREA after advecting AREA if seaice_growth is not called
791    o change calculation of Visbeck K:
792      - no longer depend on tapering scheme; instead, compute slope (limited
793        by GM_maxSlope). this is equivalent to what was comuted before with
794        clipping or linear tappering.
795      - fix vertical averaging (wrong by 1/2 level)
796      - leave the old version (but will not be maintained) within
797        #ifdef OLD_VISBECK_CALC / #endif
798      - update output of exp. ideal_2D_oce
799    o change error catch in calc_r_star to improve vectorization
800    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
801      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
802    o adjoint:
803      Re-organized adjoint checkpointing according to Matt Mazloff
804      (but with modifs/completions/cleanups)
805      Storing is now bundled into large arrays to optimized I/O
806      (and second step in cleanup of the_main_loop)
807    
808    checkpoint59b
809    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
810      - export/import (between ocean & coupler) fields needed for ocean DIC.
811    o pkg/seaice:
812      - get rid of three more exchanges seaice_calc_viscosities (required
813        different loop boundaries in seaice_lsr and seaice_ocean_stress)
814      - bug fix in seaice_ocean_stress (update of lab_sea required)
815      - reduce loop boundaries to necessary minimum also in seaice_evp
816      - go back to the old way of computing deltaC/Z as the adjoint likes that
817        better
818    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
819      passive tracer to an Age Tracer) + update output.txt
820    o pkg/exf:
821      - implement A-grid / C-grid selection for wind-stress input files.
822      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
823      for now, in exf_bulk_largeyeager04.F only :
824      - change implementation for case where windspeed + 2. components wind-stress
825        are read-in. AND use rhoConstFresh to convert evap.
826    o pkg/seaice:
827      - use correct EXCH_UV for wind-forcing (on A-grid).
828      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
829        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
830    o pkg/exf:
831      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
832      EXF_INTERPOLATION:
833      - merge global_with_exf/code version of exf_interp_read.F
834        to the main code ;
835      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
836        reading the file ; Important: This options needs to be defined to recover
837        previous code.
838        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
839      - no longer loose real*8 precision along the way when using exf_iprec=64.
840    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
841      - change discretisation of evp-solver in order to avoid another exchange
842        (changes lab_sea) and clean up a little
843      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
844        help the adjoint (this also changes the results slightly)
845      - add a few "_d 0" where they had been missing in seaice_evp.F
846      - cleaning up: remove unused seaice_calc_rhs.F
847    o pkg/exf: some cleaning-up:
848      - change various "constants" into runtime parameters
849      - cleaned-up Large&Yeager04 routine which should eventually
850        replace exf_bulkformulae.F (changed names of S/R and CPP)
851        and merged various ALLOW_ATM_WIND options
852     only used with thsice pkg (in thsice_get_exf.F):
853      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
854        which are used when useStabilityFct_overIce=TRUE (= the default)
855      - change default values of ice & snow emissivity and scale downward LW
856        by ice & snow emissivity.
857    o pkg/thsice:
858     fix few little problems, in thsice_calc_thickn.F:
859      - growth vertically (and not laterally) if iceFrac == iceMaskMax
860      - melt only laterally if hIce < hThinIce (as the comments say)
861      and in thsice_extend.F:
862      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
863      - start to form ice as soon as the minimum ice-volume is reachable.
864     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
865      and cpl_aim+ocn
866    o pkg/kpp
867     - move computation of surface related input fields to KPP into a new
868       subroutine kpp_forcing_surf.F
869     - remove wrong (within bi,bj loops) EXCH calls.
870     - little cleaning (add argument myThid in last position, cvs header ...)
871     - for now, fix conservation problem by exchanging KPPviscAz (may not
872       be the best fix)
873    o pkg/seaice
874     - check for inconsistent evp parameter/cpp-flag combination
875     - remove leftover errIO flat for obsolete name list error handling
876    o OpenAD
877     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
878    
879    checkpoint59a
880    o pkg/seaice: some parameter clarifications and a little bit of clean up
881    o pkg/thsice: rename run-time parameters:
882       himin       -> hIceMin
883       himin0      -> hThinIce
884       hihig       -> hThickIce
885       i0          -> i0swFrac
886       transCoef   -> bMeltCoef
887       frac_energy -> fracMelting
888      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
889       with default values (for now) that do not change the results.
890      remove old version of thsice vars advection in pkg/seaice.
891    o in FFIELDS.h:
892      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
893      - make pLoad & sIceLoad always available (but still only used if
894         ATMOSPHERIC_LOADING is #define).
895    o pkg/kpp: replaced _KPP_RL with _RL
896    o bug fixes for vertical diffusivity computations when both KPP and
897        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
898        are no longer updating the vertical diffusivity array
899        (passed as argument) but are (re-) setting those arrays.
900    o pkg/seaice: fix bug in evp solver, while doing that
901      - change (improve?) discretization of stress computations for both
902        cgrid-lsr and evp solver
903      - add a new routine to compute strain rates
904      - the above changes lab_sea results
905      - add no slip conditions for evp solver (off by default), lsr-version
906        may follow
907      - fix exchange for shear at Z-points (does not change lab_sea)
908      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
909        (to force the user to pick a time step since there is not "safe" way
910        of choosing it)
911      - add principal stress diagnostics
912      - rearrange fields for evp a little to avoid having to call a: too many
913        exchanges and b: exchanges for stress trensor components which we do
914        not have.
915      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
916        of evp, complete rewrite for lsr case (latter is does not yet work
917        in all cases)
918    o pkg/kpp: add code to have mixing in shelf ice caverns
919      - add myThid to all kpp routines (long overdue)
920    
921    checkpoint59
922    o pkg/exf:
923      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
924        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
925      - move exf header files from lower_case.h to UPPER_CASE.h ;
926        add missing cvs Header & Name
927      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
928      - add namelist param. selectStressGridPosition, exf_monFreq
929      - retire many _CLIM routines, and remove data.exf_clim
930        + params moved to data.exf
931        + climsst, climsss now handled by exf_set_gen, i.e.
932          climss?period=0 refers to constant field,
933          climss?period=-12 to monthly forcing
934      - split up namelists in data.exf
935    o pkg/seaice:
936      - remove seaice_exch and seaice_exch_uv
937      - remove superfluous exchange of theta
938      - add myThid to seaice_budget_ocean/ice
939      - add new interface for atmospheric wind forcing (C-grid only)
940        + new routine
941        + two new field (taux, tauy for stress over ice)
942        + removed one global field (DAIRN) for C-grid case only
943    o pkg/thsise
944      - 2nd set of modifs for thsice adjoint in conjunction with exf
945    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
946    
947    checkpoint58y_post
948    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
949      vertical diffusivity, similar to that in MOM4; turned on using
950      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
951      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
952    o Added capability for 3D specification of background vertical diffusion
953      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
954      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
955      "data" file that contains the 3D vertical diffusivity coefficients.
956    o ice dynamics (pkg/seaice) with thsice thermodynamics:
957      - add code within pkg thsice to advect & diffuse sea-ice fields
958      similar to (and will replace) what has been added in  seaice_advdiff.F,
959      but: - conserving Mass, Heat & Salt.
960           - better when using non-linear advection scheme (not yet fully tested)
961           - can also be used in atmospheric set-up (for now, only the diffusion).
962    
963    checkpoint58x_post
964    o IO option for global-file compact format:
965      - add options when generating topology (utils/exch2/matlab-topology-generator)
966      - add I/O capability (pkg/mdsio).
967      - adapt utils/matlab/rdmds.m to read this format.
968      for now long-line format not yet supported by pkg/mdsio (& exch2).
969    o shelfice: add a few diagnostics
970    
971    checkpoint58w_post
972    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
973      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
974      (and replace horiVertRatio in NH code).
975      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
976                         and tutorial_plume_on_slope (sensitive to truncation)
977    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
978      directly to drive seaice model (C-grid only)
979    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
980     - reintroduce computation of wind from stress,
981     - compute tau (in exf_bulkformulae.F) from windstress averaged to
982       mass points to avoid tau = 0
983     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
984    o rdmnc.m: make it work with "global" files created with gluemnc
985    o rdmnc.m : some improvements in dealing with singleton dimension
986      (tested on all testreport mnc output files).
987    o genmake2: disable pkg/profiles if netcdf test fails.
988    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
989    o move call to cal_readparms up to make calendar parameters/variable available
990      to all packages
991    
992    checkpoint58v_post
993    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
994      useDynP_inEos_Zc tested.
995    o pkg/exf: changes to properly interpolate/mask/scale initial fields
996    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
997      and portions thereof.  See read_cs.txt for description and examples.
998    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
999      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1000      following the great-circle arc between those 2 points.
1001    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1002      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1003    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1004     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1005     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1006     - still needs work (not working with some options ; efficiency to improve)
1007       and serious testing.
1008     - use this scheme for temperature & salinity in 2 advection test exp.:
1009       advect_xy & advect_xz, respectively.
1010    
1011    checkpoint58u_post
1012    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1013    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1014    o testreport: add option "-skipdir" to skip some test.
1015    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1016      momentum calculation.
1017    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1018    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1019      remove checkpoint.F and the_correction_step.F (no longer used);
1020      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1021    o add option (linFSConserveTr) to correct for tracer source/sink due to
1022      Linear Free surface
1023    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1024    o pkg/thsice: fix reading mnc-pickups
1025    
1026    checkpoint58t_post
1027    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1028    o pkg/mdsio:
1029     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1030       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1031       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1032     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1033     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1034       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1035     - new S/R (to replace MDSWRITEMETA), which allows to write more
1036       informations (variable names, time ...) to meta files.
1037     - modify rdmds.m to give back the meta file content.
1038    o pkg/diagnostics: change vertical interpolation to be safer, and more
1039       flexible (define p-levels to interpolate to in data.diagnostics);
1040      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1041       diagnostic pointer.
1042    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1043    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1044    o fix multi-category seaice:
1045     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1046       SEAICE_MULTICATEGORY
1047     - fix short wave heat flux
1048    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1049       and allow to use EVP solver. Change forward lab_sea: test both EVP
1050       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1051    o Initial check-in of lab_sea adjoint
1052      (very similar to natl_box_adjoint/code_seaice)
1053      * used C-grid and EVP solver
1054      * used KPP, GM/Redi
1055      * uses inAdExact=.TRUE.
1056      * gradient checks fail for both ADM and TLM
1057        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1058        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1059        issue is related to forward mismatch between g77 an ifort
1060    o pkg/seaice: overhaul of thermodynamics
1061     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1062     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1063     - move a few global fields out of SEAICE.h into seaice_growth.F and
1064       make them 2D (FICE/QNETO/ ...)
1065     - remove FO (it is the same as QNETO)
1066     - introduce a few local fields to avoid modifying external fields such
1067       as atemp, etc.
1068    
1069    checkpoint58s_post
1070    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1071      changed exf_set_gen.F so that
1072        genperiod=0 means input file is one time-constant field and
1073        genperiod=-12 means input file contains 12 monthly means
1074    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1075      this affects truncation error ; generate new output file for exp. which
1076      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1077        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1078        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1079        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1080        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1081        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1082    o start implementation of deep-atmosphere and anelastic formulation
1083    o verification: remove 2nd copy of input files and use script "prepare_run"
1084      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1085    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1086    o profiles: fix for multithreaded case
1087    
1088    o diagnostics: rename few diags:
1089      s/'PRESSURE'/'RCENTER '/g
1090      s/'TICE    '/'oceFreez'/g
1091      s/'TAUX    '/'oceTAUX '/g
1092      s/'TAUY    '/'oceTAUY '/g
1093      s/'SWFLUX  '/'oceQsw  '/g
1094      s/DIFx/DFxE/g
1095      s/DIFy/DFyE/g
1096      and add few ocean-forcing diagnostics:
1097      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1098    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1099      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1100      as actual snow thickness.  It now refers everywhere to effective snow
1101      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1102    
1103    checkpoint58r_post
1104    o modifications to pkg/seaice/growth.F, which change results of
1105      lab_sea experiment: fixes pertain to melting snow over open water, to
1106      masking EVAP under sea ice, and to using the correct AREA variable for
1107      computations of EVAP, PRECIP, HSNOW, and GHEFF
1108    o add ability to read bathy, salt, and theta using MNC (off by def)
1109    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1110      both are turned off by default and do no change any results
1111    o seaice advection with pkg/thsice: a step toward the use of non-linear
1112      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1113    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1114      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1115      in natl_box (affects results @ truncation level: update output.txt)
1116    o multi-threading and IO:
1117      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1118      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1119        (needed to work with SingleCpuIO): tested in all verif. exp.
1120    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1121      affects the results (but none of the verification test uses this scheme).
1122    o Adding some pkg/diagnostics capability to pkg/seaice
1123      (will certainly be subject to changes)
1124    o ctrl: adding new control variables:
1125      lwflux, lwdown, evap, snowprecip, apressure, runoff
1126    
1127    checkpoint58q_post
1128    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1129      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1130      high_res_cube configuration by 4% on Columbia.
1131    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1132      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1133      dynamical allocation (seems to work in multi-threaded).
1134    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1135      single CPU io) so that TAF does not have to see EESUPPORT.h
1136    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1137    
1138    checkpoint58p_post
1139    o obcs: stop if obcs is used with useCDscheme = .true.
1140    o shelfice:
1141     - fix a sign error so that no slip at shelfice interface works
1142     - remove stop for combination non-hydrostatic code and shelfice. That does
1143       not mean, that the results are correct, but at least they are numerically
1144       stable
1145    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1146    o added adjoint exch routined for all exch*3d* routines
1147      and updated flow directives
1148    
1149    checkpoint58o_post
1150    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1151      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1152    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1153      and clean-up reading/writing of pickup files.
1154    o fix local version of read/write pickup (NH part) in rotating_tank/code
1155    o simplify EXCH interface:
1156     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1157     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1158    o added the regrid package
1159    o shelfice:
1160     - add a simple boundary layer scheme to reduce noise
1161     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1162    
1163    checkpoint58n_post
1164    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1165       local variable (not in common block).
1166    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1167      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1168      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1169        to work with SingleCpuIO.
1170    o add "_d 0" to real constant of pkg/cfc subroutines ;
1171       update exp. cfc_exemple & tutorial_cfc_offline output files.
1172    o multi-threading and IO:
1173      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1174        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1175      - barrier before and after reading.
1176      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1177      - avoid using MDS_WRITELOCAL for LAND pkg output.
1178      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1179        common-block variables ; Allows multi-threading with master-thread IO.
1180    o change default MAX_NO_THREADS from 32 to 4 ;
1181      and stop cleanly when MAX_NO_THREADS is too small.
1182    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1183    
1184    checkpoint58m_post
1185    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1186       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1187    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1188       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1189       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1190    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1191        add MITgcm_tutorials (= code + all the tutorials)
1192    o ecco, option to compute cost for total ssh (mean+anom)
1193    o consistent with addition of ptracer and ssh in pkg/profiles
1194    o profiles: adding ptracer and ssh
1195    o testreport: change multi-test output-file name
1196      (from output.txt.{name} to output.{name}.txt)
1197    o profiles: now ok for mutli-tiles case
1198    o seaice: add 4 parameters for different advection schemes for area,
1199      (effective) seaice thickness, enthalphy, and snow height. Their default
1200      is the standard parameter SEAICEadvScheme
1201    o calc_gw:
1202     - add cosFacU in zonal viscous flux (harmonic.visc.).
1203     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1204       of tutorial_plume_on_slope.
1205    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1206    o calc_gw: true flux-form, account for horizontal grid spacing.
1207      update rotating_tank results, but not plume_on_slope (affected at
1208      truncation level, 11 digits).
1209    
1210    checkpoint58l_post
1211    o calc_gw:
1212     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1213     - remove side-drag for now (need to fix it); update plume_on_slope results.
1214     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1215    o commit code to make SST/SSS weights spatially variable
1216      (based on either variable in-situ or variable initial T/S weights)
1217    o pkg/ecco:
1218      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1219        now based on horizontally varying weights wthetaLev, wsaltLev
1220      * cost_averagesflags now returns year indices in addition to day, month
1221      * sflux balance is performed on annual basis
1222        (sflxumm, sfluxmm2, bal_sfluxmm)
1223      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1224        including separate counting and multipliers
1225    o pkg/rbcs
1226      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1227    
1228    checkpoint58k_post
1229    o testreport:
1230     - always build in dir. "build" (if not there, mkdir build instead of building
1231       & running in input)
1232     - run in dir run (if it exists), in build otherwise.
1233     - call prepare_run (if input/prepare_run exists)
1234     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1235    o pkg/exf modifications to interpolation and rotation routines for more
1236       reasonable treatment of North Pole singularity: for tracers North Pole
1237       value is set to northernmost zonal-mean value, for zonal velocity it is
1238       set to zero, and for meridional velocity it is set to northernmost value.
1239    o pkg/exf/exf_check_range.F
1240     - add tile index to diagnostics and move stop statement to the very
1241       end of the routine.
1242    o pkg/diagnostics: (diagnostics_main_init.F)
1243      define title of isomorphic variables according to the current config.
1244    o pkg/thsice with pkg/seaice dynamics:
1245    - fix domain of computation (interior only, required for exf) and do exchanges
1246    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1247    o towards a standard way of dealing with multi-threading in MONITOR
1248      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1249    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1250       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1251    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1252    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1253    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1254       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1255    o tracer advection:
1256     - clean-up and simplify calc_common_factors.F
1257     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1258       advection subroutine (but still not used within DST advection S/R)
1259    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1260    
1261    checkpoint58j_post
1262    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1263      from file (collects calls previously in FORWARD_STEP)
1264    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1265    o adjoint store dir. adjusted accordingly
1266    o genmake2
1267      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1268    
1269    checkpoint58i_post
1270    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1271      on wind stress (SEAICEstressFactor defaults to 1.)
1272    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1273      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1274    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1275      on CS-grid: no longer loosing mass.
1276    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1277    o pkg/ggl90: fix sloppy output and fix a bug
1278    o pkg/seaice: added SEAICEuseEVPpickup parameter
1279      - Set to false in order to start EVP solver with
1280        non-EVP pickup files when using SEAICEuseEVP
1281      - fix sign error in diffusion in seaice_calc_rhs
1282    
1283    checkpoint58h_post
1284    * Modifications for bottom topography control
1285      o replace hFacC by _hFacC at various places
1286      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1287      o add non-self-adjoint cg2d_nsa
1288      o update autodiff support routines
1289      o re-initialise hfac after ctrl_depth_ini
1290      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1291    * Adding verification for 5x5 box (4-layer) bottom topography control
1292    
1293    checkpoint58g_post
1294    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1295       used for mean seasonal cycle, mean diurnal cycle); add an example
1296       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1297    o pkg/ggl90:
1298      - add parameter (minimum surface kinetic energy)
1299      - fix bug (avoiding division by zero)
1300    o couple pkg/thsice to pkg/seaice:
1301      - modify advection in seaice to accomodate new scalar fields to be advected
1302      - only muliDimAdection scheme work with seaice/thsice
1303      - mapping of thsice-variables to seaice-variables, back and forth
1304      - does not break the verification experiments, but does not give the
1305        desired results either
1306    o pkg/seaice
1307      - make (default) second order advection a bit less confusing?
1308    
1309    checkpoint58f_post
1310    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1311      to pkg/seaice):
1312      - new routines thsice_map_exf and thsice_get_exf provide the interface
1313      - add an additional formal parameter to thsice_solve4temp
1314    o pkg/exf:
1315      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1316      - correct Stefan-Boltzmann constant
1317      - new parameter for longwave surface emittance
1318      - separate some stuff from exf_bulkformulae into new routines  
1319        exf_radiation, exf_wind
1320      - add new parameters and constants: longwave emissivity for ocean, ice
1321        and snow, evaporation parameters over ice
1322      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1323        either wind from stress or stress from wind
1324    o pkg/thSIce:
1325    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1326    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1327       and THSICE_CALC_THICKN
1328    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1329    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1330      to make debugging easier.
1331    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1332    o pkg/bulk_force:
1333      - clean-up comments and parameters ;
1334      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1335    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1336      generate new output for test-experiment: aim.5l_cs.thSI
1337    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1338      testreport accordingly
1339    
1340    checkpoint58e_post
1341    o SEAICE_CGRID adjoint done
1342    o R_STAR adjoint implemented.
1343      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1344      * need to sort out init. of h0facc, etc.
1345    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1346      to be able to use it in pure forward.
1347    
1348    checkpoint58d_post
1349    o upgrade simple test-experiment to tutorial example:
1350     step.1: duplicate the experiment and (step.2) will remove the old copy.
1351      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1352      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1353      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1354      tutorial_global_oce_biogeo    <- copy of dic_example
1355      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1356      tutorial_plume_on_slope       <- copy of plume_on_slope
1357      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1358      tutorial_global_oce_optim     <- empty for now (David ?)
1359      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1360     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1361    o correct a sign problem in cost_scat.F
1362    o obcs and ptracers: fix boundary conditions for advections schemes
1363      with larger stencil
1364    o thsice adjoint: start
1365    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1366      completeness
1367    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1368      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1369    o ptracers adjoint:
1370      * avoid extensive recomputatations
1371      * fix missing re-init. of gptr (missed by TAF)
1372    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1373      me to turn off the excessive output to STDOUT that this package produces
1374    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1375      and add those terms in Vector-Invariant formulation.
1376    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1377      if the control period (xx_hfluxperiod etc) is 0
1378    o in profiles pkg, clean routines and fix details
1379    o in ecco pkg, reading ssh data:
1380      fix problem in case the model does not start at iter0=0
1381    o fix mnc-pickup/restart for ptracers
1382    o new package prifiles:
1383      code to compute profile-based cost by Gael Forget
1384      (modifs in ecco, ctrl, autodiff)
1385    o Benign bug fix in initialization (spotted by M. Mazloff) of
1386      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1387    
1388    checkpoint58c_post
1389    o adjoint: finish NLFS adjoint and provide reference output in
1390      verification/global_ocean.90x40x15/results_ad_nlfs
1391    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1392      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1393      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1394      with SEAICE_CGRID defined.
1395    o move calendarDumps from "data" to "data.cal" and clean-up the code
1396      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1397    o add useEXF & useCAL flags (for now, set in hard-coded way)
1398    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1399      (were missing in NH mode, and wrong in quasihydrostatic mode).
1400      waiting for Chris updated version of calc_gw to add those CALLs.
1401    o fix bug in quasihydrostatic S/R ;
1402      add a test for this option: global_ocean.90x40x15.qshyd
1403    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1404      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1405    o add on/off flag useOffLine for package OFFLINE
1406    o seaice:
1407      - modify advection so that it works also on the C-grid
1408      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1409        problem in multi-tile runs with C-grid
1410      - add flags for clipping ice velocities and/or masking solver forcing
1411      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1412        C-grid solver
1413      - added a few comments to seaice_diffusion.F
1414      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1415        are now exclusive)
1416      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1417        required re-ordering the code a little:
1418       + make DAIRN global variable (defined in SEAICE)
1419       + move computation of the viscosities eta and zeta into a new separate
1420         routine (because I need to recompute them in seaice_ocean_stress.F)
1421    
1422    checkpoint58b_post
1423    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1424      update output.txt of exp. aim.5l_cs.thSI
1425    o various mnc cleanups and improvements:
1426      + shrink lookup tables by factor of ~4
1427      + better error reporting when running out of lookup space
1428      + able to handle longer path/file names (up to 500 chars)
1429    o adjoint:
1430      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1431      - TBD: "hidden" mom_vecinv recomp. in dynamics
1432    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1433     (allow to differentiate between forcing components using new integer flags:
1434      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1435     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1436    o ecco
1437      - enable trend removal from SSH anomaly obs.
1438    o adjoint
1439      - a fix for PmEpR when #undef EXACT_CONSERV
1440      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1441      - try to fix "hidden" recomp. in forward_step for NLFS
1442        (NLFS seems broken sometimes after I checked it in)
1443    o seaice:
1444     - add c-grid version of the dynamic solver:
1445       + three new routines that are the c-grid substitute lsr, dynsolver
1446         and ostres
1447       + put a few fields that were local to dynsolver into global common
1448         blocks, so that I can move the computation of stresses etc into
1449         seaice_lsr (saves coding but may break the adjoint).
1450     - replace more hardwired parameters by runtime parameters
1451     - add ice masks that mask the rhs of the implicit solvers where there
1452       is no ice (commented out in seaice_dynsolver, because i am not sure
1453       if this works properly), eventually this should replace the clipping
1454       of ice velocities in seaice_dynsolver to +/-40cm/s.
1455    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1456      include it only where its needed
1457    o move balancing of fluxes before the call of external_forcing_surf
1458    o seaice:
1459      - correct units of turning angles (now they are really in degrees)
1460      - move computation of GWATX/Y out of main routine into dynsolver
1461      - initialize GWATX/Y in seaice_init
1462    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1463      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1464    o seaice: add runtime flags for turning angles (default to zero)
1465    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1466      and trend from exf forcing and ctrl control adjustments
1467    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1468      (since checkpoint57x_post)
1469    o change the default rotation period to 86164.s = the Earth rotation
1470    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1471      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1472    o seaice advection: add code for choosing between the default (2nd order
1473      central differences) and multiDim advection schemes provided by
1474      pkg/generic_advdiff
1475    o seaice:
1476      - removed all references to SEAICE_GRID.h fields from
1477        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1478        (cubed-sphere configuration will change a little)
1479      - grid computations in seaice_init are obsolete now.
1480      - cleaned up code a little so that is easier to read (hopefully).
1481      - added new (better?) discretizations of default advection and diffusion
1482        (turn on with SEAICEuseFluxForm)
1483      - replace 1 in 3d global fields by kSurface in growth.F
1484      
1485    checkpoint58a_post
1486    o seaice:
1487      - bug fix in advect.F
1488    o shelfice:
1489      - separate shelfice load anomaly from pload (breaks with time
1490        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1491        Its default is 0., but it may be computed more cleverly from (unknown)
1492        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1493        done offline. A good approximation of the pressure load anomaly is
1494        necessary to avoid large initial adjustment processes underneath
1495        deep-reaching shelfice.
1496      - small fix in ISOMIP shelfice_thermodynamics
1497      - add more sophisticated thermodynamics of Hellmer (1989), this is
1498        now the default
1499      - give a few constants more intuitive names
1500    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1501      if bulk formulae are used in long integration (especially EmPmR). Turn
1502      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1503      if balancePrintMean, the imbalance that is substracted is printed to
1504      STDOUT.
1505    o fix bug (typo) in obcs_apply_eta.F
1506    o add a new package shelfice which enables us to model the circulation
1507      underneath shelf-ice with draughts of hundreds of meters.
1508     - works
1509     - to do: + include improved thermodynamics
1510              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1511                instead of new field kTopC
1512              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1513                instead of new field R_shelfIce and new code in ini_depth.F
1514                and ini_mask_etc.F?
1515              + adjust vertical mixing schemes?
1516    o seaice pkg:
1517     - add a cpp-flag to include a simple formula for a salinity dependent
1518       freezing point of sea water at the surface
1519     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1520       meridional stresses are now different (and hopefully correct)
1521    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1522       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1523       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1524    o pkg/diagnostics: add options and parameters for regional-statistics
1525       diagnostics ; define regions by reading a region-mask from a file
1526       (might add other options later)
1527    o pkg/bulk_force:
1528     - add option and parameters to use AIM surface-flux formulae.
1529     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1530       others forcing fields (defined in PARM05, parameter file "data") are loaded
1531       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1532     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1533     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1534     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1535       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1536     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1537    
1538    checkpoint58
1539    o add "--embed-source" option to genmake2 which, when the supporting
1540      tools can be compiled (as determined by genmake2) will turn on the
1541      embed_files package which then embeds the entire MITgcm source code
1542      (*.[fFhc] + Makefile) used for the build within the executable
1543      - requested by CNH but off by default
1544      - adds a paltry <9MB to the mitgcmuv executable in most cases
1545      - only writes the output when useEMBEDSRC in eedata is true
1546    o clean up 3-dim. relaxation codes:
1547      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1548      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1549      * Thanks to Tom Haine for testing!
1550    
1551    checkpoint57z_post
1552    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1553      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1554    o fix the pickup behavior for obcs in combination with ptracers
1555    o fix a bug in ptracers_external_fields_load
1556    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1557      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1558    o transfered surface NH pressure to eta field (if exactConserv).
1559    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1560         and update lab_sea output.txt file.
1561    o completing 3-dim. relaxation code: additional term
1562         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1563      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1564      * At compile time, in "EXF_OPTIONS.h" set
1565          #define  ALLOW_CLIMTEMP_RELAXATION
1566          #define  ALLOW_CLIMSALT_RELAXATION
1567      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1568          tauThetaClimRelax3Dim = 15552000.0,
1569          tauSaltClimRelax3Dim  = 15552000.0,
1570      * 3 cases:
1571          1) Use a constant-in-time 3-dim. field
1572          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1573          3) Real-time relax. to time-evolving prescribed field
1574    o Adding Laplacian-type smoothness constraint on
1575      initial and boundary (forcing) controls (ic, bc)
1576      * enable at compile-time via
1577        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1578      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1579      * Absolute scale somewhat unclear so far
1580      * no area weighting was included since no other cost term does so far
1581    
1582    checkpoint57y_post
1583    First step for a NLFS adjoint
1584    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1585    o new init. routines for calc_r_star, calc_surf_dr
1586    o still need to deal with ini_masks_etc
1587    o testreport seemed happy
1588    checkpoint57y_pre
1589    
1590    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1591    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1592    o add new offset feature to offline pkg (plus minor cleanup)
1593    o cfc fixes for final year of integration
1594    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1595      be in GCHEM_OPTIONS).
1596    
1597    checkpoint57x_post
1598    o fix testreport Pb in multiple test experiment.
1599    o cleanup our namelist syntax in verification:
1600      - make it more F95 standards compliant (some work still needed)
1601      - allows the vast majority of our tests to work with gfortran
1602    o Non-Hydrostatic:
1603     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1604     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1605    o Allow to apply AB on T,S rather than on AB(gT,gS):
1606     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1607     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1608       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1609     - need a "clever" read_pickup to restart from the other AB formulation
1610    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1611    o remove some unused variables (reduces number of compiler warnings)
1612    o adjoint
1613      * Disable useVariableViscosity for adjoint for time being
1614        (there are a number of extensive recomputations)
1615      * Initialize certain variables needed for adjoint
1616    
1617    checkpoint57w_post
1618    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1619                 fix the singleCpuIO RS version of MDSWRITEFIELD
1620       and add a WARNING if using globalFiles=T with multi-processors.
1621    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1622      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1623    o tracer advection scheme:
1624      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1625       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1626       was not very convenient).
1627      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1628       (further tests needed for the implicit DST & Flux-Limiter schemes).
1629    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1630      and sRef for convenience, handy, when you want to initialize
1631      ptracers in a large domain with a constant non-zero value. Also,
1632      untangle ptracers_init.F a little.
1633    
1634    checkpoint57v_post
1635    o change dome exp. to use variable viscosity in side-drag terms.
1636    o remove all the files from the cfc_offline test since they are now
1637      incorporated into tutorial_cfc_offline which has been producing
1638      identical results for a few days of testing
1639    o add new parameter: sideDragFactor to enable half-slip-side BC
1640      and change side-drag S/R to use viscosity from mom_calc_visc
1641      (can switch back by setting sideDragFactor=0.); affects results at
1642      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1643       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1644    o vorticity & strain are now computed without masking, to account for
1645      no-slip-side BC in variable viscosity calculation ; mask is applied
1646      anyway later on, before computing advection/coriolis terms.
1647    o modify exp4 to test new obcs support for reading from external files
1648      and for passive tracers
1649    o fix behavior of ptracers_monitor when monitor output is written to a
1650      netcdf-file; still not independent of monitor.F (writes in the same
1651      file).
1652    o change default value of tRef (put a uniform, meaningful value for ocean
1653      & atmos) and initialize sRef (was missing, as Martin mentioned).
1654    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1655      to be proportional to enstrophy dissipation length.  Thus,
1656       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1657      This is now consistent with Smagorinsky and with the manual.
1658    
1659    checkpoint57u_post
1660    o OBCS and PTRACERS: add open boundary support for passive tracers
1661      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1662        OB-values from file; this is not different from the way theta and salinity
1663        are treated
1664      - however, Orlanski-radiation conditions are not supported, and the model
1665        will stop if you use pTracers and Orlanski at the same time.
1666      - beefed up the rountine obcs_external_fields_load: now only those open
1667        boundary values are overwritten with values from files for which there
1668        are really files, otherwise the OB-fields remain untouched. This makes
1669        it possible to use different OBs at different ends of the domain (as
1670        with EXF)
1671    o reduce number of exch calls in shap_filt (s2).
1672    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1673      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1674    
1675    checkpoint57t_post
1676    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1677    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1678      same truncation, independent of the face number: affects affects several
1679      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1680    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1681      note that biharmonic viscosity + no-slip was not tested in any experiment.
1682    o fix bug in non-linear free-surf side-drag ; generate new output for
1683      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1684    o make mnc honor the writeBinaryPrec flag for most kinds of output
1685    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1686    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1687      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1688    o add brackets in multi-terms sum to get same truncation, independent of
1689      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1690      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1691    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1692      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1693      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1694      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1695      Suggested values of viscosity parameters found in mom_calc_visc.
1696      Many new viscosity diagnostics available.
1697    
1698    checkpoint57s_post
1699    o Add clearing-house for viscosity calculations, mom_calc_visc and
1700      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1701      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1702      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1703      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1704      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1705      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1706      ViscAhStrain and viscAhTension are now retired.
1707    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1708    o In response to JMC's bug report, genmake2 now ignores any soft-links
1709      that it finds in the *current* directory when searching for files.
1710      Soft-links found in any other source directories will still work as
1711      they did before.
1712    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1713      a C routine to unlimit the stack size
1714    o mnc-ify pkg/aim snapshot vars
1715    o mnc-ify pkg/land as requested by Daniel
1716    o various changes to mnc including:
1717      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1718      - output can now be grouped so that all files within a group
1719          change the ITER portion of their names in lock-step together
1720      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1721          and works with both EXCH1 and EXCH2 (but needs more testing)
1722      - writing works for all verification test cases w/ g77 on Linux
1723    
1724    checkpoint57r_post
1725    o make MNC variable initialization happen earlier
1726    o add diagnostics for (almost) each term of the momentum Eq.
1727    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1728    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1729    o remove MINIMAL_TAVE_OUTPUT option ;
1730      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1731    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1732      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1733    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1734    o add time-dependent SST, SSS control
1735    o cost terms in ecco/ modularized (new cost_generic.F)
1736    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1737    o new infrastructure for seaice model vs. obs misfits in seaice/
1738      * driver from the_main_loop.F is seaice_cost_driver.F
1739      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1740      * gradient check in Exp. 6a of natl_box_adjoint/
1741    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1742      (see README file)
1743    
1744    checkpoint57q_post
1745    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1746    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1747      - bug was reported by Jean-Michel and Ian Fenty
1748    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1749      update exp. cpl_aim+ocn output.
1750    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1751      Needed for high-res. runs with large global files
1752      to be able to limit tapelev size
1753    o Changed some tests for adjoint:
1754      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1755      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1756      * global_ocean.90x40x15/ back to default 3-level checkpointing
1757    o Modifications to enable scripted COMMON to MODULE conversion
1758      * verification/OpenAD/code/ has necessary scripts and description;
1759      * converts, compiles and runs successfully;
1760    
1761    checkpoint57p_post
1762    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1763    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1764      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1765    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1766    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1767      (was already the case for dissipation with mom_vecinv,
1768       and also the case for grad.PhiHyd when staggered-timeStep)
1769      This will allow to put dissipation out-off the AB time-stepping.
1770     Unfortunately, affects truncation error. Update output of exp. that "fails"
1771      (cg2d matching number) and leave the others for later: front_relax(10),
1772      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1773      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1774    
1775    checkpoint57o_post
1776    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1777      (2) its ready to be documented during the 20050801 DocFest
1778    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1779      for ideal_2D_oce and lab_sea on linux_ia32_g77
1780    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1781      in global1x1_tot/code_seaice_adj to access indices 32, 33
1782      (worth another tag)
1783    
1784    checkpoint57n_post
1785    o adding precip control xx_precip 32
1786    o adding swflux control xx_swflux 33
1787    o Replacing 10 forcing penalty cost routines by 1 generic.
1788    o Implementing partitioning in time-mean and variable adjustment
1789      for atmos. state.
1790    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1791    o in natl_box_adjoint:
1792      * updated exp 1 to 10
1793        (but does not have time-mean vs. variable split results yet)
1794    o updated global1x1/*_seaice_adj/
1795      to incorporate latest changes
1796    o enable useSingleCpuIO for mdsio vector routines
1797      (applies in particular to tapelev I/O)
1798    o removed inefficient K-loop in all active_file*control*.F
1799    
1800    checkpoint57m_post
1801    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1802      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1803    o pkg/exch2: filling of face-corner halo regions is optional
1804      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1805    
1806    checkpoint57l_post
1807     tag before updating tutorials (pre-release-2)
1808    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1809       for output and interpolation of input fields onto model grid)
1810    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1811       Affects results of exp. rotating_tank ; update output.txt.
1812    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1813          and taking the square quantity and/or using a fraction-weight field.
1814    o fix aim_diagnostics_init.F mate numbers.
1815    o add mnc output capability to diagnostics/diagstat and update
1816      our cvsignore files for the ACSII output generated
1817    
1818    checkpoint57k_post
1819    o lab_sea now uses diagnostics package and provides a suite of
1820      new EXF diagnostics output.
1821    
1822    checkpoint57j_post
1823    o exf
1824      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1825        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1826        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1827      * extended diagnostics output
1828        - now includes all EXF variables
1829        - hs, hl moved to common block
1830        - separate S/R for diagnostics, called after ctrl vector is added
1831        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1832        - EXFqnet contains true Qnet (i.e. includes qsw)
1833      * updated verif. lab_sea, global_with_exf
1834      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1835        to ensure that diagnostics sees a true EXFqnet
1836    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1837    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1838      several times with different frequencies.
1839    o mnc-ify the thsice package as requested by Daniel Enderton
1840      - the monitor--MNC output needs work
1841      - many attributes need to be added (most are currently blank)
1842    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1843      - many attributes need to be added (most are currently blank)
1844    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1845    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1846    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1847      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1848         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1849    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1850     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1851    
1852    checkpoint57i_post
1853    o Diagnostics package was changed: diagnostic allocation is now deactivated
1854      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1855    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1856      add 1rst Order upwind vertical Shear.
1857    o add a quick fix for A/B checkpointing in OFFLINE mode
1858    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1859      end-run around the C/Fortran linking horror in eesup/src/timers.F
1860    o added pkg/runclock: allows user to terminate run based on wall clock
1861    o added non-hydrostatic scaling parameter: nh_am2
1862    o pkg/my82: futile attempt to make results compiler-independent by adding
1863      some "_d 0", etc. no effect.
1864    o for mnc output, fill the 'T' coordinate var with myTime and create a
1865      separate 'iter' variable for iteration count
1866    o pkg/diagnostics:
1867      add new capability: output of Global/Regional & per-level statistics ;
1868      tested against monitor output (including land & thSIce) on various exp.
1869    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1870    
1871    checkpoint57h_done
1872      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1873      data.diagnostics, data.gchem, data.ptracers) is done.
1874    
1875    o pkg/diagnostics: prepare for Global/Regional statistics.
1876      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1877    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1878      and rename it: DIFFERENT_MULTIPLE
1879    
1880    checkpoint57h_post
1881    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1882    o pkg/diagnostics: change output frequency, now in seconds (instead
1883      of Nb of iterations). This requires to change data.diagnostics.
1884    checkpoint57h_pre
1885    
1886    o in mnc, let the user create the output dir if both mnc_outdir_date
1887      and mnc_outdir_num are false
1888    o add fflags() to pkg/diagnostics which allows one to specify, on a
1889      per-file basis, the file precision [default behavior is unchanged]
1890    o added diagnostics to pkg/kpp, including computation of mixed layer
1891      depth based on a temperature/density criterion
1892    o updated verification/natl_box to test the new pkg/kpp diagnostics
1893    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1894    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1895    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1896      not mnc -- this mistake was found by JMC and is now corrected
1897    
1898    checkpoint57g_post
1899    o add Adams-Bashforth 3rd Order time stepping:
1900      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1901      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1902    checkpoint57g_pre
1903    
1904    o make lambda[Theta,Salt]ClimRelax spatially varying
1905      (default remains spatially uniform constant based on tau)
1906    o added new control variables
1907      * init. uVel, vVel, etanN
1908      * lambda[Theta,Salt]ClimRelax
1909    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1910      (suggested by G. Forget)
1911    
1912    checkpoint57f_post
1913    o add parameter "baseTime" = model base time = time at iteration zero
1914      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1915      account for baseTime shift
1916    o move Coriolis arrays from PARAMS.h to GRID.h
1917    checkpoint57f_pre
1918    
1919    o mnc-ifying the seaice package
1920    o introduced an alternative length scale calculation for use in the limiting
1921      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1922    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1923    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1924      as well as grad(vort3).  Made it compatible with both approximate form
1925      for the cubed sphere and full form of these gradients.  Added flag
1926      useFullLeith to select between approximate and full form.  
1927    o add "d0" in getcon.F to reduce differences between compilers/platforms
1928      update output.txt of exp. fizhi-gridalt-hs
1929    o change port_rand funtion to allow to set the seed.
1930    o fix obscure MNC bug involving conversion between reals and integers
1931      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1932        new version is now more standards-compliant
1933    o adjoint-related modifications
1934      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1935      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1936      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1937    
1938    checkpoint57e_post
1939    o Adding eddy stress controls a la Ferreira et al.
1940    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1941    
1942    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1943      update output.txt of exp. fizhi-gridalt-hs
1944    o add more "Z" dimensions and associated coordinate vars to MNC
1945    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1946    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1947      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1948      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1949      months and years.  Requires pkg/cal.
1950    o diagnostics: add pickup functionality
1951      - off by default for backwards compatibility
1952      - current version only uses MDSIO -- MNC will be added
1953    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1954    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1955    
1956    checkpoint57d_post
1957    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1958    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1959      output from the diagnostics package
1960    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1961    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1962      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1963    o add coordinate variables to the MNC output from the diagnostics package
1964    o change MNC-flags default value: true when useMNC=TRUE
1965    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1966      the ability (off by default) to read the grid information using MNC
1967    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1968    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1969    o do snap-shot diagnostics at the middle of the time-interval (instead of
1970      at the end).
1971    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1972      new test for AIM with thSIce + slab-ocean
1973    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1974    o move state variable diagnostics to the beginning of the time step ;
1975      (note: still needs some work specially for snap-shot diagnostics)
1976      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1977    
1978    checkpoint57c_post
1979    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1980    o generate new output.txt files on faulks with g77 & the new -ieee option
1981    checkpoint57c_pre
1982    
1983    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1984      update output.txt of exp. global_ocean.90x40x15
1985    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1986      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1987    o add saltFlux(+File) forcing capability with periodicExternalForcing
1988    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1989    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1990    o improvements for the MNC output from DIAGNOSTICS:
1991      - correct handling of the unlimitied dimension
1992      - all dims now have associated coordinate variables
1993      - variables located at U, V, and Corner ("Z") points are now written
1994        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1995        *all* data points are output
1996    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1997    o added pkg/seaice/seaice_monitor.F
1998    o mdsio_readfield.F can now read files visible only to master MPI process.
1999    o pkg/seaice: some test code for ice-modified ocean stress
2000    o exf_getffields interpolation defaults to bilinear for all scalar forcing
2001      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
2002      spurious negative numbers for precipitation and humidity.  Will cause
2003      some small numerical differences for integrations using pkg/exf/exf_interp.F.
2004    o pkg/ctrl/
2005      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
2006        May be enabled via doPackDiag
2007      *  introduce z-scaling of
2008         + gradient (doZscalePack) and
2009         + control (doZscaleUnpack)
2010    o pkg/mdsio/
2011      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
2012      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
2013    
2014    checkpoint57b_post
2015    o simplify options in diagnostics_fill arguments (remove weird combinations)
2016    o fix MNC coordinate variables so that they now contain per-face index
2017      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
2018      general, EXCH2 grids are only aligned to a "local" coordinate system
2019    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
2020    o Implement instantaneous output within pkg diagnostics:
2021      setting a negative frequency in data.diagnostics produces
2022     "snap-shot" output (as opposed to time-average if freq > 0)
2023    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
2024      NOTE: change ptracer diagnostics name: use 2 characters to work with
2025            more than 9 tracers. Add also diagnostics of advect & diffus flux.
2026    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
2027      becomes the coordinate variable for the 'T' dimension
2028    o add CF-style coordinate variables to MNC
2029      - just a first cut:  numbers are meaningless on the cubesphere and
2030        missing along the T axis but otherwise it works!
2031    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
2032    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
2033    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
2034      this is based directly on what the model compute, so that the content of
2035      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
2036    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
2037    o clean up build options files for SunOS, in particular
2038      - remove -traditional from xmakedepend
2039      - change -xarch=v9 to -xarch=native for f77
2040      - restore use of make (not gmake)
2041      - add CC=gcc if using g77
2042    o changes per discussion of AM, JMC, & EH3 today:
2043      - move redundant "grid" variables out of "state" -- in preparation of
2044        creating proper CF-style coordinate variables and in recognition
2045        that any/all grid variables can be easily copied (eg. w/NCO) from
2046        the grid files into any of the other NetCDF files
2047      - *always* output grid variables with MDSIO (this will eventually be
2048        changed)
2049      - output MNC grid file if useMNC is true
2050    o every instance of _END_MASTER() has been found and replaced with
2051      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2052      preprocessors
2053    o re-arrange diagnostics pkg initialisation:
2054     - allow each package to extend the available diagnostics list
2055     - add some checking and fix small problems (multi-threaded, ...)
2056     - new S/R diagnostics_fill (replace fill_diagnostics):
2057       look through the short list of active diag. (instead of the long list)
2058       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2059    
2060    checkpoint57a_post
2061    o this set of changes restores TAMC compatibility
2062      tested for global_ocean.90x40x15 adjoint on trough
2063      (what a pain)
2064    
2065    checkpoint57a_pre
2066    o some modifs in tools/build_options for sunos
2067    o call ctrl_pack for ctrl at end for optimcycle=0
2068    
2069    checkpoint57
2070    o add horizontal bi-harmonic viscosity for vertical velocity
2071      - new parameter viscA4W (defaults to viscA4)
2072      - affects only non-hydrostatic code
2073      - to be done: no-slip lateral boundary conditions
2074    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2075    o implement Implicit Vertical advection for pTracers
2076    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2077      (implemented also for implicit vertical diffusion & advection)
2078    o OBCS: extend application of tracer open boundary conditions
2079      to a strip beyond the boundary of width Olx/Oly
2080    o add call monitor to TAF set of required calls (flow directives)
2081      and include in natl_box_adjoint
2082    o untangle a few ifdefs related to cost, ctrl, autodiff
2083      untangel a few ALLOW_ECCO_OPTIMIZATION
2084    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2085      (theta2, salt2 in ecco_cost_weights)
2086    
2087    checkpoint56c_post
2088    o OBCS as control variables
2089      - update ctrl_ad_diff.list, obcs_ad_diff.list
2090      - remove balance of obcs controls from default
2091      - fix index bug nobcs in ctrl_init
2092      - fix dummy fields filen in ctrl_pack
2093      - add dummy weights for obcs
2094    o lsopt: comment out fort.94 output
2095    o optim:
2096      - remove unnecessary header files
2097      - adjusted namelists
2098      - add xerbla.F to Makefile
2099    o exf:
2100      - multiple modifications of exf_check_range
2101      - unit change in exf_init_runoff from [m/year] to [m/s]
2102    o mdsio:
2103      - i/o-vector change debugLevel from debLevA to debLevB
2104    
2105    checkpoint56b_post
2106    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2107      is called from DO_THE_MODEL_IO
2108      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2109      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2110      - clean up PTRACERS_WRITE_TIMEAVE a little
2111    o add another verification experiment that tests both the cfc-pkg and
2112      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2113      reactive tendencies treated inline with regular timestepping
2114    o testreport previously did a lousy job of comparing small numbers, so
2115      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2116      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2117      testreport.
2118    o ptracers_monitor: bug fix for MPI
2119    
2120    checkpoint56a_post
2121    o GCHEM: finish reorganizating the package
2122      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2123        (introduces another 3D-array for each passive tracer, but only if
2124        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2125        gchemTendency is not needed because the timestep is done separately)
2126      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2127      - GCHEM is now---more or less cleanly---separate from PTRACERS
2128      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2129        so clear to me how that should be done in a general way.
2130    o CFC: improve formatting of output in CFC_ATMOS
2131    o PTRACERS:
2132      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2133        that ALL experiments with ptracers enable can be checked. This makes
2134        GCHEM_MONITOR obsolete.
2135      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2136        monitorFreq
2137      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2138    o add PTRACERS (PTR0[1-5]) to testreport output
2139    o exf_check_range:
2140      * default changed to .TRUE.
2141      * will check values for niter0 if debLevA, every timestep if debLevB
2142      * STOP in exf_check_range if 'out of range'
2143      * range chosen generous to allow for potential extema
2144      TBD: a version with stricter range
2145           permitted range would be runtime parameters
2146    o GMredi:
2147      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2148      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2149      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2150    o GCHEM:
2151      - move call to GCHEM_FORCING_SEP, so that it is now called before
2152        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2153      - introduced a useGCHEM runtime flag and applied it everywhere.
2154      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2155        this flag is now only visible within GCHEM-pkg routines.
2156      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2157        be replaced by a 3D array that is computed before thermodynamics; for
2158        this, the tracer ID iTracer had to be included into the parameter list
2159        of ptracers_forcing
2160      - set up forward_step to call gchem_forcing, that will replace
2161        gchem_forcing_int in ptracers_forcing
2162      - cleaning up
2163    o small cleaning of exch2: remove files that are also in eesupp/src
2164    
2165    checkpoint56
2166    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2167    o mnc: cleanup "full" files--fixes out-of-memory problem
2168    o ECCO-GODAE
2169      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2170      * fully merged and updated from SIO code
2171        windstress sign change affects
2172        - exf_inscal_[u/v]stress
2173        - sign of xx_tau[u/v] adjustments
2174        - signs in cost_scat
2175      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2176      * natl_box_adjoint updated and compressed
2177      * 2-level checkpoint switch added
2178        (tested in EXP. 1 of natl_box_adjoint)
2179      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2180    o SVD
2181      * first complete, non-hacked version for SVD calculations
2182      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2183        performed via direct access files admtlm_vector.it????
2184        (via ctrl_[un]pack)
2185      * optimcycle is used for ARPACK iteration counter
2186        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2187      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2188        and add linear transforms where necessary
2189      * controls are initial/final SST, SSS (can be extended; need to check
2190        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2191    o mdsio: filename info to both stderr, stdout
2192    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2193      from sign change
2194    
2195    checkpoint55j_post
2196    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2197      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2198    o add consistent build directories and .cvsignore files to verification
2199    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2200    o make all subroutines 30 or less characters in length for certain older
2201      compilers to work (a thorough search only turns up two routines in
2202      pkg/ptracers)
2203    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2204      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2205    
2206    checkpoint55i_post
2207    o change arrays for total vertical diffusivity (2.D if explicit,
2208      3.D if implicit) ; each ptracer uses its own background value.
2209    o added mnc/NetCDF output capability to ocn_compon_interf
2210      - added bits to verification/cpl_aim+ocn so that it can run on
2211        ITRDA and other clusters without the mpirun "-wd" option
2212    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2213      configuration
2214    o give MNC the ability to create additional files rather than
2215      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2216      - the default is just less than 2GB which is a practical limit
2217        on many systems
2218    o Compute the non-local term using either KPP vertical diffusivity (=default)
2219       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2220    
2221    checkpoint55h_post
2222    o add verification test "vermix"
2223    o remove all the *_ioinc flags and replace with the single global
2224      outputTypesInclusive flag
2225    o allow to set a vertical profile of vertical diffusivity for T & S
2226    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2227    o useMNC moved from data.mnc to data.pkg
2228    
2229    checkpoint55g_post
2230    o Renaming carbon AD experiments to comply with testreport conventions
2231    o Updating adjoint of Held-Suarez hs94.1x64x5
2232    o Fixing directives for non-ECCO forward_step, after ECCO directives
2233      have been fixed to avoid recomp. of do_oceanic_phys
2234      Works well for global_ocean.90x40x15,
2235      but recomp. issue remains for carbon
2236    o Updating adjoint output for natl_box_adjoint after
2237      pkg/ecco has been modified (see taga c55d_post)
2238    
2239    checkpoint55f_post
2240    o rename to timeave_init_fixed
2241    
2242    checkpoint55e_post
2243    o some delicate re-shuffle of store directives to avoid one
2244      extra call of do_oceanic_physics
2245      affects ecco_the_main_loop.F, do_oceanic_physics.F
2246      checkpoint_lev1_directives.h
2247    o NB: this may break global_ocean adjoint temporarily,
2248      but it is clear how to fix it. Will do later, need this now.
2249    
2250    checkpoint55d_post
2251    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2252    o ecco_cost_weights is modified to 1x1 runs
2253    o modifs to allow observations to be read in as
2254      single file or yearly files
2255    o enable to read exf forcing fields as either
2256      single file or yearly files (flag useExfYearlyFields)
2257    checkpoint55d_pre
2258    
2259    o switch between 2-level and 3-level checkpointing
2260    o add ability of MNC to write local and "partial" (eg. 2D slices where
2261      the full 3D field is never actually stored) arrays to NetCDF files
2262      with the correct (that is, the complete multi-dimensional) set of
2263      array indicies
2264      - used in mom_vecinv() to write the diagFreq output
2265      - tested (demonstrated) in verification/aim.5l_cs
2266    o further mnc-ification
2267      - add verification/lab_sea to the list with mnc setups
2268      - fix undefined mnc v-names in cd_code
2269      - add kpp to mnc output (both snapshot and timeave)
2270    o non-hydrostatic code
2271      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2272        in calc_gw.F
2273      - defaults to viscAh
2274      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2275        friction or Leith) in non-hydrostatic mode, as long as there is
2276        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2277    o pkg/cost
2278      extend simple cost functions to treat time mean quantities
2279      (T,U,V) via cost_accumulate_state from cost_tile
2280    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2281        be 2 times larger than the minimum size the advection scheme requires.
2282        now get a perfect conservation of salt in advect_cs test-exp (updated)
2283    o GGL90 (Gaspar's TKE mixed layer)
2284      - add horizontal diffusion of TKE, requires exchanges in
2285        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2286        default. In OPA there is no horizontal diffusion of TKE but the
2287        mixing coefficients are computed from a horizontal average of TKE of
2288        6 points or so. I think that diffusion has a little more physical
2289        justification.
2290      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2291        was in vain)
2292      - mask tke-variable in ggl90_init
2293    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2294    o fix biharmonic diffusion on CS-grid.
2295    o more obcs stuff
2296      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2297        for reading boundary values. This routine is called from
2298        obcs_prescribe_read
2299      - updated obcs_check
2300      - changed sponge layer relaxation parameter units for days to seconds
2301      - turned off sponge layer by default
2302      - changed argument list of OBCS_CALC to myTime+deltaTclock
2303      - fixed about 35 bugs in obcs_external_fields_load
2304    
2305    checkpoint55c_post
2306    o obcs stuff
2307      - new runtime flags useOBCSprescribe, useOBCSbalance
2308      - re-arranged obcs_calc
2309      - moved exf_getobcs to obcs_prescibe_read
2310        obcs_prescibe_read is called after ORLANSKI stuff
2311        and independent of it (executable can contain all).
2312      - updated obcs_check
2313      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2314        These may be necessary only if tangential velocities are
2315        prescribed at OB, not sure, needs testing.
2316    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2317      which simplifies the calls and passes the ifc check-bounds test
2318    
2319    checkpoint55b_post
2320    o add a 2D scalar, Z location, exchange_2 routine.
2321    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2322      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2323      affects advect_cs results (for the wrong reason): update output.txt
2324    o use a more standard discretization for biharmonic viscosity ;
2325     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2326      affects results of dome set-up: update output.txt
2327    o fix gad_advection.F (CubedSphere part), back to version 1.23
2328    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2329    
2330    checkpoint55a_post
2331    o merged code to
2332      * prescribe/read time-dependent open boundaries
2333        (works in conjunction with exf, cal)
2334      * sponge layer code for open boundaries
2335      * each boundary N/S/E/W now has its own CPP option
2336        (healthy for the adjoint)
2337    
2338    checkpoint55
2339    o up-to-date adjoint of previous breaks
2340      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2341      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2342      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2343      - carbon: * remove tr1-related adjoint verification
2344                * add ptracer as control variable
2345    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2346      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2347    
2348    checkpoint54f_post
2349    o in verification/carbin/ remove experiment related to
2350      ALLOW_PASSIVE_TRACER (array tr1 etc)
2351      code_ad/ input_ad/ results_ad
2352    
2353    o add two new packages
2354      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2355        + subject to optimization (memory)
2356      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2357        + subject to reordering (many GOTOs in the original code)
2358        + so far opps is called for every (i,j) point, and then operates in
2359          the vertical; one may want to reorder the scheme in order operate in
2360          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2361          fields)
2362    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2363      - all verification tests compile and run with linux_ia32_g77
2364      - defaults are compatible with current input files--nothing
2365        should change if you were not previously using MNC
2366      - MNC output has been added in numerous places (eg. timeave)
2367        but there are still a few writes not yet do-able with MNC
2368        (this is in progress)
2369      - flags now allow for either/or/both use of MDSIO and MNC and
2370        documentation will soon follow
2371      - numerous small formatting cleanups for ProTeX
2372    o add version info (via BUILD_INFO.h) to MNC and stdout
2373    
2374    checkpoint54e_post
2375    o add two new packages
2376      - pp81 (Packanowski and Philander, 1981), Richardson number and
2377        stratification dependent mixing
2378      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2379      - these scheme operate in a similar manner as KPP (without ghat, of
2380        course), however there is only one diffusivity that is used for both
2381        temperature and salinity (and passive tracers)
2382    o add offline package
2383    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2384      provided by Stephanie Dutkiewicz
2385    o genmake2: add ability to search for C compilers and cleanup test output
2386      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2387    
2388    checkpoint54d_post
2389    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2390    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2391      leading to additional shift by 5 days each year of integration
2392       (i.e. leading to considerable offset over the years)
2393    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2394    o start with no AB and no initial filtering (staggerTimeStep):
2395      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2396    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2397      (external loading & cpl import/export stay in forward_step.F)
2398    o update coupling interface to work with new staggerTimeStep
2399    o change MDSIO ptracers_pickup.
2400    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2401    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2402    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2403    
2404    checkpoint54c_post
2405    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2406      this affects (truncation error) output.txt of test-exp:
2407       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2408    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2409    o change Qnet to always be the net heat flux, (+upward).
2410      affects (truncation error) output of natl_box exp.: updated
2411    o define the max number of passive tracers in PTRACERS_SIZE.h
2412    o start to test mnc routinely in exp0
2413    o add sea-ice loading (sIceLoad) as a new forcing field.
2414    
2415    checkpoint54b_post
2416    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2417       impressive on Altix and Opteron systems)
2418    o diagnostics can now write NetCDF files through the mnc package
2419    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2420    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2421    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2422      affects (truncation error) output of lab_sea & natl_box exp.: updated
2423    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2424    
2425    checkpoint54a_post
2426    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2427    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2428    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2429    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2430      + internal_wave (shift in writing cg2d_ini_res)
2431    checkpoint54a_pre
2432    
2433    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2434      - modified verification/lab_sea and natl_box_adjoint accordingly
2435    
2436    checkpoint54
2437    checkpoint53g_post
2438    o prepare splitting of thermodynamics: store convect.counter in common block
2439    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2440      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2441    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2442    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2443    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2444    o restore adjointability
2445    
2446    checkpoint53f_post
2447    o modifications that affect AIM experiment results (update output.txt):
2448      - no advection of S at top interface Nr (pkg/generic_advdiff)
2449      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2450    o AIM pkg:
2451      - include stability function into surf.Flux derivative relative to Tsurf
2452      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2453    
2454    checkpoint53e_post
2455    o merged cylindrical coord configuration
2456    o added rotating_tank experiment
2457    checkpoint53e_pre
2458    
2459    checkpoint53d_post
2460    o faulks upgraded: re-generate output.txt that have changed:
2461       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2462    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2463    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2464    o added Sadourny discretization of Coriolis
2465      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2466      - re-enabled use of omega3 (useAbsVorticity)
2467    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2468      vector-invariant equations
2469      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2470    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2471      hopefully without new bugs
2472      - still to do: biharmonic friction for non-hydrostatic w
2473    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2474    o regenerated output for global_ocean_ebm (using -ieee)
2475    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2476      of mom_common/
2477      - simple re-arrangement of instructions within computing loop
2478    checkpoint53d_pre
2479    
2480    checkpoint53c_post
2481    o new version of coupler for AIM+thSIce and Ocean models
2482     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2483     - land: change Evaporation of snow
2484     - aim with thSIce: fix bug in snow-precip.
2485    o changes to calc_gw.F
2486     - bug fix for w^2 term near the bottom boundary
2487     - (hopefully) improve the lateral slip boundary condtions for use with
2488        partial/looped cells
2489      - because the bug fix changes two verification experiments anyway (exp5
2490        and plume on slope), change the lateral boundary condition from half slip
2491        to the value of no_slip_sides
2492    o ebm package wasnt quite up to the parallel task. Fixed that.
2493    o Adjoint of EBM package + verification
2494      * TLM OK
2495      * ADM not sufficient accuracy yet (needs further testing)
2496    
2497    checkpoint53b_post
2498    o Commiting new energy balance model to repository
2499      * package is pkg/ebm
2500      * verif. is verification/global_ocean_ebm
2501      * references are in ebm_driver.F
2502    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2503    C        Global thermohaline circulation. Part I:
2504    C        Sensitivity to atmospheric moisture transport.
2505    C        J. Climate 12(1), 71-82
2506    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2507    C        Global thermohaline circulation. Part II:
2508    C        Sensitivity with interactive transport.
2509    C        J. Climate 12(1), 83-91
2510    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2511    C        Destabilization of the thermohaline circulation
2512    C        by atmospheric eddy transports.
2513    C        J. Climate 7(12), 1870-1882
2514    o Will need long integration testing.
2515    checkpoint53b_pre
2516    
2517    o created pkg/mom_common in preparation for variable viscosity code
2518    o renamed and split ini_mnc_io
2519    o pkg/land: only liquid water can diffuse or run-off
2520    o AIM using land: soil wetness availability account for snow
2521    o added printMapIncludesZeros to EEPARMS namelist
2522    
2523    checkpoint53a_post
2524    o restore TAMC compatiility for exf_constants.h
2525      (no usage of _d in .h)
2526    o Additional storing in KPP in an attempt to fix
2527      TAMC problem with adjoint of KPP code.
2528      (no success...)
2529      Identical code works fine with TAF.
2530    o Fixed verification/natl_box_adjoint experiments.
2531      Initial conditions for Experiments 4 and 5 are now
2532      set to "SEAICE_initialHEFF=0", which is more reasonable,
2533      and hence gives results closer to that of Experiment 2.
2534      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2535    
2536    checkpoint53
2537    o stable checkpoint with up to date adjoint
2538      TLM tests only run for 1st grdchk at the moment. Its unclear if
2539      this is a code problem or a problem with resetting code for g_
2540      variables that is being autogenerated wrong.
2541      Otherwise:
2542       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2543       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2544         are both still in chaos following their security messes.
2545    
2546    checkpoint52n_post
2547    o various build (mostly genmake2) changes including:
2548      - ability to build/run more easily within Cygwin and MacOS X
2549      - more complicated Makefiles with a stronger dependence on Gnu Make
2550    o pkg/seaice modifications
2551      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2552        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2553        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2554      - changed proxy for geostrophic velocity and updated
2555        verification/lab_sea/results/* accordingly
2556      - removed ADI dynamic solver from pkg/seaice
2557      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2558        they caused a segmentation fault under certain circumstances
2559      - removed unused field WATR
2560    o bug fix in exf-package:
2561      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2562         now reflect that.
2563    o small fixes in the cal-package:
2564      - set reference date to first of January for the 'model'-calendar
2565      - failing of cal_CheckDate in cal_FullDate now actually results in a
2566        warning
2567    o small modifications in exf-package to increase flexibility:
2568      - change climtempfreeze from a constant to a runtime parameter that
2569        is specified in data.exf_clim (default = -1.9)
2570      - introduce runtime parameter windstressmax (default = 2.0) that is
2571        specified in data.exf
2572    o fix in pkg/thsice:
2573      - update Evap (Tsf changes) to be consistent with Latent heat flux
2574      - maintain snow precipitation unchanged (even if Tsf >=0).
2575     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2576    
2577    checkpoint52m_post
2578    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2579      this does not change any of the results, because myIter=0 in swfrac always
2580      lead to jwtype=2 (the default anyway), but the call makes little sense
2581      as a default
2582    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2583    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2584      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2585    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2586    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2587    o extending useSingleCpuIO option to work with new exch2 I/O format
2588      - old-style, missing-tile I/O is still accessible by defining CPP
2589        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2590    o monitor package can write to NetCDF files and/or STDOUT
2591    o fix re-definition bug in MNC_GRID_INIT_ALL()
2592    o doc/api_reference added
2593      - a framework for building an API Reference Manual using all
2594        the "protex" comments embedded in the code
2595      - see pkg/generic_advdiff, pkg/mnc for examples
2596    o MNC:
2597      - make myThid the last argument for all subroutines
2598      - new default for the grid files: NO halos
2599      - add useMNC and other run-time flags
2600      - separate per-file-group handling of the unlimited dimension
2601      - early initialization of MNC w/ flags read at the eeboot stage
2602        and lookup tables set in initialize_fixed
2603      - write all MNC output to a freshly-created directory
2604    o thermodynamics sea-ice (thsice) is now tested with testreport.
2605    o test exp. advect_cs: use the standard cs32 grid ; update output.
2606    o Added functionality to grdchk:
2607      pick global i,j,k position (or nearest wet) where to perform check.
2608    
2609    checkpoint52l_post
2610    o new land formulation:
2611      a) use ground enthalpy as prognostic variable to ensure exact
2612         energy conservation.
2613      b) account for water temperature and for latent heat of freezing
2614         in all processes (rain, run-off, ground storage)
2615      c) compute surface and ground temperature implicitly.
2616    o aim_v23 modification for new land model:
2617      a) Treat separately land / ocean / sea-ice surface fluxes
2618         to allow implicit computation of land & sea-ice surface temp.
2619      b) add snow precipitation.
2620    checkpoint52l_pre
2621    
2622    o fix problem (when 1 tile is empty) in min/max monitor.
2623    o fix bug in timeAve (u,vZetatave in common block)
2624    o no restoring terms under ice for pkg/seaice
2625    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2626    o bug fix for pkg/seaice pickups
2627    o change MNC call locations and add coordinate attributes
2628    o mask vorticity at the corner ; affects global_ocean.cs output
2629    o fix ini_curvilinear_grid ; test CS experiments with mpi
2630    o aim.5l_cs: modify sea-ice fraction input file ; update output
2631    o exf: Adding simple range check routine for exf fields after read
2632    
2633    checkpoint52k_post
2634    o removed top-level directory "diags"
2635      - we migrated these functions to pkg/timeave a long time ago
2636    o fixed bug introduced in pkg/monitor
2637    o accuracy ctrlprec = 32 insuffient for gradient checks using
2638      averaged fields (I/O via cost_averages)
2639      -> use ctrl.h in active_file*.F to control I/O precision.
2640    o paramter list of CALL ADTHE_MAIN_LOOP
2641    o added initial do_the_model_io to ecco
2642    o set all ...Freq to zero after cost_final
2643      taveFreq, dumpFreq, pChkptFreq
2644    o MAIN and ECCO differentiability restored
2645    
2646    checkpoint52j_post
2647    o fix nchklev in tamc.h for global_ocean...
2648    o Bringing flow and store directives up-to-date
2649    o Really weird thing!
2650      call do_the_model_io from the_main_loop with parameters
2651      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2652      TAF places a faulty re-call of initialise_varia
2653      after cost_final call which should not be there!
2654    checkpoint52j_pre
2655    
2656    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2657      error messages
2658    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2659    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2660      debug output
2661    o modfied mdsio_writefield.F to handle non-global files under exch2
2662    o update AIM Cubed-Sphere exp (aim.5l_cs):
2663      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2664    o update AIM Equatorial Channel exp:
2665      use standard aim_v23 pkg and change the SST fields to be more realistic.
2666    o globalFile now works with exch2
2667    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2668      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2669    o limit timeave output for hi-res integrations
2670    
2671    checkpoint52i_post
2672    o removed CPP_EEOPTIONS.h from verification/*/code
2673    o updated the tiling for global_ocean_pressure
2674    checkpoint52i_pre
2675    
2676    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2677      the old pkg/aim).
2678    
2679    checkpoint52h_pre
2680    o shortened offending lines in exch2_send_rx?.template
2681    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2682    o genmake2: add build & execute test for NetCDF code
2683    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2684      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2685    o added useSingleCPUIO flag to monitor.F and mon_out.F
2686    o added temporary hack for sea-ice dynamics on the cube:
2687      metric terms are ignored and it is assumed that
2688      there is no sea-ice on cube faces 1, 2, 4, and 5.
2689    
2690    checkpoint52f_post
2691    o added exch2 cube routines to pkg/exch2
2692    o modified hs94.cs-32x32x5 to use it
2693    o added new grid files to hs94.cs-32x32x5
2694    checkpoint52f_pre
2695    
2696    checkpoint52e_post
2697    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2698      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2699    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2700      to work with implicit vertical advection and AB ;
2701    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2702    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2703     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2704    checkpoint52e_pre
2705    
2706    o fix bug in impldiff when Nr=1 or Nr=2.
2707  o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt  o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2708  o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.  o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2709  o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2  o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2

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