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revision 1.41 by heimbach, Fri Jul 13 18:08:14 2001 UTC revision 1.1070 by jmc, Mon Feb 23 01:27:48 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 remove backward compatibility for thetaMin,phiMin
8      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
9    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
10      interpolated wind field not only for curvilineargrid=.true., but also
11      for a rotated grid (rotateGrid=.true.)
12    o pkg/exf: add capability to bypass interpolation for runoff
13      by setting yet another CPP-flag
14    o eesupp/src, B-grid exchange:
15      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
16    o autodiff
17      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
18      allows to switch to single-prec common blocks;
19      corresponding switch occurs in tamc.h, integer isbyte
20      TAF store directivs "byte" and "kind" seem equivalent;
21      Most tamc.h have been updated correspondingly.
22    
23    checkpoint61i
24    o autodiff:
25      fix autodiff_sore/_restore indices for obcs
26      (spotted by I. Hoteit, M. Mazloff)
27    o pkg/autodiff, pkg/ctrl:
28      Add flag to reduce all tapelev I/O to single-prec.
29      In data.ctrl set
30        doSinglePrecTapelev = .TRUE.
31    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
32      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
33    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
34      real fresh water flux (not yet)
35    o pkg/mdsio & rw:
36     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
37     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
38    o pkg/flt:
39     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
40       init_fixed & ini_varia.
41     - clean-up & simplify linear interpolation S/R:
42       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
43     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
44     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
45     - add vert. coordinate & horiz. indices to output files.
46     - change vertical position in initial condition, from index to depth [m].
47     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
48       (easier to get to a curvilinear grid) ; delX,delY no longer used.
49    o pkg/ggl90: a few modifications:
50     - fix bottom boundary condition, and interpolation of KappaE
51       near top and bottom
52     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
53     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
54     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
55    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
56      (maintain temporary backward compatibility, until next checkpoint)
57    
58    checkpoint61h
59    o pkg/diagnostics with "periodic averaging diagnostics":
60      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
61    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
62    o pkg/obcs: fix loop ranges for balancing code
63    o pkg/flt:
64     - improve criteria for finding which tile owns a float.
65     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
66    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
67      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
68      with ocean biogeo)
69    o pkg/flt:
70     - do some cleaning and fix the restart ;
71     - add output.txt in flt_example/results to get this pkg tested.
72    o genmake2: add an EXTENDED_SRC option and flag.
73       for now, cannot be turned on on command line (only through genmake_local)
74    o pkg/mdsio: read/write vector:
75     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
76     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
77       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
78     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
79      (drop to 4 digits matching for grad). But this test does not look very
80      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
81    
82    checkpoint61g
83    o pkg/flt:
84      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
85       + make OPTIONS file more standard.
86      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
87      - fix _BYTESWAPIO CPP-Flag
88      - standard reading of file-parameter "data.flt"
89      - fix argument list of S/R FLT_RESTART
90      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
91    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
92    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
93      a still unfixed compiler/optimization bug
94    
95    checkpoint61f
96    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
97      update results of global_ocean.cs32x15.icedyn test.
98    o move getcon.F from model/src to pkg/fizhi.
99    o pkg/exf: add parameter for extrapolation of temp up to the surface
100       and option to prevent negative evap (in bulk_largeyeager04 only).
101    o Prather Advection scheme: fix tracer conservation for divergent flow
102      (e.g., when using NonLin Free-Surface).
103    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
104    o gmredi (Visbeck-variable-K):
105     - add more parameters to Visbeck-variable-K.
106     - use a 5 points average for dSigmaR in Visbeck-K calculation
107       (more "homogenous": same stencil and same weights as in dSigmaH)
108     - update output of ideal_2D_oce experiment.
109    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
110      (#undef REAL4_IS_SLOW)
111     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
112       coordinate variable
113     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
114       (surface forcing fields), removes some of the functionality
115     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
116     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
117       probably not all: copy _RS surface flux fields to RL field before
118       calling DIAGNOSTICS_FILL
119     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
120       real*4 (CALL EXCH_*_RS) versions.
121     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
122       (generate new output).
123    
124    checkpoint61e
125    o gmredi (Visbeck-variable-K):
126      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
127      - change computation of Visbeck-K where Slope > Smax :        
128        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
129        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
130    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
131      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
132    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
133    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
134      does not become too large (to avoid precision problems in implicit-diffusion
135      solver); update ideal_2D_oce output.
136    o pkg ggl90:
137      - in ggl90_cal.F: compute only one set of visc/diff, used to
138        step forward TKE/T/S/momentum
139      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
140        have Prandlt =1)
141    o gmredi (fm07):
142      - add lower limit on Transition layer thickness + lower limit on 1/lambda
143      - allow to set few more params from data.gmredi
144    o pkg ggl90:
145          - add missing sqrt(2) factor in computation of mixing length
146            scale in ggl90_calc.F
147            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
148    
149    checkpoint61d
150    o adjoint modifs
151      - adapt to new field rhoInSitu
152      - allow to revert from StoreDynVars2D, StoreDynVars3D
153        to individual fields
154        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
155    o store 3-D (in-situ) density in commom block (DYNVARS.h)
156     - save 1 rho computation.
157     - no longer modify T & S inland when using down_slope pkg.
158    o gad_som : allow to switch to SOM advection for T & S without corresponding
159      pickup files (using new S/R: MDS_CHECK4FILE).
160    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
161      (for useSingleCpuIO to work in multi-threaded)
162    o pkg/shelfice:
163     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
164       with SHELFICEtopoFile in data.shelfice
165     - move code for reading ice shelf topography and modifying hFacC into separate
166       subroutines of the shelfice package
167     - separate initialisation of "fixed" and "variable" variables
168     - kTopC is not (yet) replaced by kSurfC, although this is possible
169    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
170    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
171      and rename:
172      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
173      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
174    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
175    
176    checkpoint61c
177    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
178      to add mass source/sink of fluid in the interior (3-D generalisation
179      of oceanic real-fresh water flux).
180    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
181    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
182    o new pkg: down_slope
183      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
184      - presently, modify T & S inland (dwnslp_calc_rho.F).
185        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
186      - implementation for ocean in P-coords not tested.
187      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
188    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
189      (to facilitate conversion of oceanic pkg to p-coordinate).
190    o change FIND_RHO to FIND_RHO_2D :
191      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
192    o new pkg: cheapaml
193    
194    checkpoint61b
195    o exch2:
196      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
197      - no longer depend on the order sequence (N,S,E,W).
198      - 3rd exchange no longer needed (tested with 24 tiles).
199      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
200      - exch_UV_A-grid readily available (but not yet tested).
201      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
202      (both are no longer needed) in exch_uv: no effect in forward run; but
203       get truncation error differences with adjoint exch.
204    o exch2:
205     - change index-bounds storage (moved from target to local tile,
206       more intuitive this way) ; rename/remove some variables.
207     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
208    
209    checkpoint61a
210    o exch2/matlab-topology-generator:
211      fix bug in index bounds for N-S internal exchange (hard to tell if this
212      had any effect on the solution).
213    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
214      is exceeded
215    o testreport: modify syntax of awk, so that it works also with
216      awk, and not only with nawk and gawk
217    
218    checkpoint61
219    o autodiff
220      Change default for TAF usage by removing argument '-nonew_arg'
221      This changes TAF subroutine argument list (ordering of active var.)
222      Omission of this flag leads to incompatibility w.r.t. TAMC
223      To restore TAMC-compatibility, need following modifs:
224      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
225      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
226      Tested TAF version is 1.9.22
227      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
228    
229    checkpoint60
230    --->>> This is the last checkpoint for which generating the adjoint
231    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
232    --->>> by default.
233    --->>> Future checkpoints will ommit this flag by default.
234    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
235    o pkg/grdchk: Add gradient check to etan0 perturbations.
236    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
237    o pkg/autodiff: more flexibility in zeroadj.
238      model/src: modifying do_oceanic_phys.F accordingly.
239    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
240    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
241      special setup of gmredi for which the adjoint is stable
242      enough for parameter optimization.
243    o bridging the gap between eddy stress and GM.
244      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
245          along with a change in CPP option (now ALLOW_EDDYPSI).
246      -> when using GM w/ GM_AdvForm:
247          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
248          is applied either in the tracer Eq. or in momentum Eq.
249          depending on data.gmredi (intro. GM_InMomAsStress).
250      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
251      The key modifications are in model/src/taueddy_external_forcing.F
252      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
253    
254    checkpoint59r
255    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
256      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
257      fix option to read coriolis(@ cell-corner) from files with CS-grid.
258    o pkg/mnc: add some attributes to standard 1D-coordinate variables
259    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
260      mass points, when using mnc for output
261      - add runtime parameter (missing_value, missing_value_int) to override
262        default (which is the value of getcon('UNDEF'))
263    o pkg/mnc: prepare mnc for the actual use of missing values with the
264      diagnostics package: small fix in mnc_cw_readwrite.template and more
265      initialisation of never used fields
266      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
267      versions
268    o pkg/thsice/thsice_ini_vars.F added default initial values so that
269      thermodynamics sea ice solver does not blow up when some initial fields
270      are missing.
271    o move from external_forcing_surf.F to ini_forcing.F
272      the p-coord. hack consisting in using pLoad to set phi0surf ;
273      update output of tutorial_global_oce_in_p (affected @ truncation level).
274    o Freshen up a bit hs94.1x64x5, notably:
275      remove rotationPeriod and tRef=5*0. (adjoint only), and add
276      exactConserv=.TRUE.
277    o pkg/generic_advdiff:
278      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
279      applies to files where Temperature & Salinity 2nd Order moments are used.
280    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
281      this uses a dynamically allocated internal state data structure
282      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
283      and requires a fortran 90 compiler
284    
285    checkpoint59q
286    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
287       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
288    o Refresh tutorial_global_oce_biogeo, notably:
289      - change bathymetry (put back seamounts in ACC, use hFacs)
290      - change EOS (POLY3 --> JMD95Z)
291      - use Bryan-Lewis vertical diffusivity
292      - use multidimensional advection
293      - remove old virtual virtual in dic pkg, now done through ptracer pkg
294      - change a couple of parameters in dic pkg
295    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
296    o pkg/obcs: change default to OBCSfixTopo = .true.,
297      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
298      - replace "debugMode" with "debugLevel .GE. debLevB"
299    o implementation of TAF directives for gchem,cfc,dic
300    o remove "exp5" (replaced by tutorial_deep_convection).
301    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
302      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
303      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
304      --> changes results in exp4, seaice_obcs
305    o tutorial_deep_convection :
306      update the set-up and increase resolution and domain size ; start
307      from pseudo initial conditions = output at t=120mn in order to see
308      something happening when running testreport.
309    o pkg/seaice: add os7mp as an advection scheme
310                  add check for advection schemes
311                  add a flag for restoring T and S underneath sea ice
312    o pkg/my82: add netcdf-support and diagnostics
313    o thsice pkg:
314      - Now hsMax limits snow height by turning it into ice following
315        flooding scheme (and now conserving energy)
316      - Slight rewriting of the formula in thsice_calc_thick.F
317      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
318      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
319    
320    checkpoint59p
321    o gchem / dic / cfc :
322      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
323      - add new parameter files: "data.dic" & "data.cfc" ;
324      - various re-arrangement in initialisation & header file ;
325      - fix tutorial_global_oce_biogeo for multi-threaded test.
326    o pkg/dic: test for "pickup_dic" file when restarting ;
327      if no pickup-file, can restart with a re-initialised pH (same as it did
328      before) providing pickupStrictlyMatch is set to False.
329    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
330      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
331    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
332      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
333    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
334     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
335       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
336    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
337       scheme to use for vorticty-term ;
338     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
339       (with default selectVortScheme, return to original discretisation)
340     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
341    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
342    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
343      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
344      also fix diagnostics VISCAHW & VISCA4W.
345    
346    checkpoint59o
347    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
348    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
349      move a few statemens out the main loop into separate loops
350    o pkg/shelfice:
351      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
352        (kg/m^2/s), does not break tests, because in verification/isomip,
353        rhoConstFresh=rhoConst (by accident)
354      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
355      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
356        new file model/src/seawater.F, so that they are available for all pkgs.
357      - convert potential temperature into in-situ temperature. This changes the
358        isomip tests => update tests
359    o add a flag writePickupAtEnd (default=true) to be able to suppress
360      writing a pickup at the last timestep
361    o tools/mpack-1.6 :
362      - disable automake (not working) and autoconf (not needed).
363      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
364        also cleaner with much less compilation warnings.
365    o pkg/profiles:
366      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
367      (for "less than 32 characters name" compiler requirement)
368    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
369      conditions that have a different sampling frequency than S/T/U/V obcs
370    o pkg/diagnostics (stats-diags):
371      - fix global Min/Max in case 1 processor get only empty tiles
372    o genmake2: replace (4 times)
373         make genmake_tc_1.o >> genmake_warnings 2>&1
374      with
375         COMM="$CC $CFLAGS -c genmake_tc_1.c"
376         echo $COMM >> genmake_warnings
377         $COMM >> genmake_warnings 2>&1
378      to make genmake2 always see the value of CC as specified in the optfile.
379    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
380      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
381      - modify verification advect_cs test to test SOM-advection on CS-grid.
382    o pkg/ctrl:
383      - Rewrite of ctrl_map_ini_ecco.F,
384        introducing a generic routine (ctrl_map_ini_gen.F).
385      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
386    
387    checkpoint59n
388    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
389      number in dedicate array "hdiag":
390      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
391        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
392      - many small changes (integer format) for large number of diagnostics
393      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
394        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
395    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
396      usingSphericalGrid, this allows to define the rotated grid coordinates
397      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
398      geographical coordinates according to the inverse of the rotation defined
399      by the Euler angles, so that Coriolis parameter and online-interpolation by
400      exf works with the geographical coordinates on XC/YC/XG/YG.
401      Naturally, this feature does not work with all packages, so some
402      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
403      profiles), because there the coordinates are assumed to be regular
404      spherical grid coordinates.
405    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
406      - introduce isopycnal diffusion coefficient control.
407    o tools/adjoint_options:
408      - additional control vector components.
409    o pkg/mnc: have mnc create marginally meaning full coordinate variables
410      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
411    o pkg/mypackage:
412      - add example of read/write pickup for state-var ;
413      - add entry points to the main code for state-vars diags & write-pickup.
414    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
415      transitions for useExfYearlyFields
416      - add new subroutine that determines the file to read from for
417        use*YearlyFields = .TRUE. and .FALSE.
418      - add a verification experiment to global_with_exf that tests
419        useExfYearlyFields with USE_EXF_INTERPOLATION defined
420    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
421      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
422      subroutines (which could be generated from a template, because they are
423      almost identical), for now they are included in obcs_prescribe_read.F for
424      simplicity
425    o pkg/exf:
426      - add a little more diagnostic to exf_interp_read (in analogy to
427        mds_read_field, can be turned off with debugLevel < debugLevA=1)
428      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
429        ugly but fast by unrolling short inner loops, inserting a unroll=8
430        directive in routine lagran, and splitting a loop and making do while the
431        outermost loop (the latter requires the intoduction of index arrays)
432    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
433    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
434      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
435    o verification/seaice_obcs: updated for restart test and latest options
436    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
437      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
438      for now this is only available for the C-grid code and also within
439      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
440    
441    checkpoint59m
442    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
443      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
444    o gad_som : fix flux output (& diagnostics) to have same units as other  
445      advection scheme fluxes (was previously multiplied by deltaT).  
446    o added verification/seaice_obcs both to test seaice open boundaries
447      and to provide an example matlab scrpt for generating them
448    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
449    o pkg/salt_plume: clean up salt_plume_frac.F to
450      remove redundancy in PlumeMethod 1 and 4
451    o pkg/kpp: added saltplume diagnostics
452    o pkg/obcs and pkg/seaice:
453      - do not set uice and vice to zero when OB*icefile are unspecified
454      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
455      - moved seaice tracer obcs after call to seaice_growth
456    o pkg/salt_plume: added various options for salt plume depth
457      criterion and for vertical distribution of the salt
458    
459    checkpoint59l
460    o pkg/ptracers: new version of ptracers pickup:
461      read meta file and write only fields which are needed to restart.
462      ( same logic as main pickup file ; also using pickupStrictlyMatch )
463    o pkg/seaice:
464      - add timescale for melting due to warm mixed layer as a means of
465        setting SEAICE_availHeatFrac more conveniently
466      - add a CPP-flag/runtime parameter check for flooding algorithm
467      - reformulated availHeat in seaice_growth.F to be independent of AREA
468    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
469      unit changes
470    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
471    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
472      SX vector computer.
473    o pkg/seaice:
474      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
475        seaice forcing fields can now be read only through pkg/exf
476      - removed some unused halos
477    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
478    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
479      or U/VICE from U/VWIND before computing U/VSTRESS
480    
481    checkpoint59k
482    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
483      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
484    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
485      all experiments pass when compile with un-initialised var. checking option.
486    o added pkg/salt_plume
487    o script to test restart (for now, in MITgcm_contrib/jmc_script)
488    o pkg/seaice: new read/write pickup version.
489      read meta file and write only fields which are needed to restart.
490      ( same logic as main pickup file ; also using pickupStrictlyMatch )
491    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
492    o lab_sea.hb87: modify the domain & update output.hb87.txt :
493      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
494      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
495      process. Fixed here by closing the domain at the Northern boundary.
496    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
497    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
498      a set of consecutive levels in/from a 3-D array.
499    o pkg/ptracers:
500      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
501      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
502    
503    checkpoint59j
504    o in pkgs: dic, obcs, offline, rbcs:
505      standard way to compute coeff. for time interpolation between 2 time reccords
506      which retains full precision (& make results less dependent on compiler).
507      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
508    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
509      packages instead of reading ice cover and wind speed separately
510    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
511     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
512      to allow to compile customized code before the update)
513    o cleaning-up:
514      - fix CPP instruction syntax in pkg/obcs
515      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
516        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
517      - fix some threads issue in IO parts.
518    o pkg/dic:
519      - add tons of "_d 0" (--> much better testreports !)
520       and then update outputs of tutorial_global_oce_biogeo
521    o pkg/mom_fluxform:
522      add a special version of momentum advection intended to conserve momentum
523      next to a bathymetry step or a coastline edge. (default = off = #undef)
524    o new read/write pickup version:
525      - for now, only implemented for main (mdsio) pickup file.
526      - write out only what is needed to restart; merge pickup_nh , pickup_ph
527        and main pickup together.
528      - read meta file; read only what is needed to restart; stop if a field
529        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
530        if it make sense (even if the restart is not perfect).
531      - if no meta file, assume that pickup to read corresponds exactly to
532        a pickup that would currently be written.
533      - read pickup written in the old format (until checkpoint59i) if it
534        recognizes an old meta file (no field-list).
535      - add a meta file in exp. which starts from a pickup: 2 cases:
536        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
537         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
538        b) a meta file describing the content of the associated pickup file
539         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
540    o pkg/mdsio & pkg/rw:
541      - new routine to read a meta file ; new set of routine to read
542        Multiple-fields file (with meta file).
543    o added open boundary conditions capability for seaice
544        HSNOW, HSALT, UICE, and VICE
545    
546    checkpoint59i
547    o adjoint:
548      * fix multiDimAdvection adjoint
549        (partial recomputation problem by TAF for fVerT(:,:,kDown)
550        and comlev1 size definition (maxpass vs. max. number of tracers)
551      * verification/global_ocean.90x45x15 adjoint now tests
552        NLFS and multiDimAdvection using DST3 (=30)
553      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
554    o pkg/kpp: add "_d 0" to real constant (if missing);
555      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
556      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
557    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
558      for internal parameters related to restart process (formerly from PARAMS.h)
559      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
560    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
561      as argument. (only atm2d & obcs write_pickup have not yet been updated)
562    o pkg/monitor:
563      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
564      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
565      - account for deep Atmosphere factor and density factor (anelastic)
566    o added open boundary conditions capability for seaice HEFF and AREA
567    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
568      thermodynamics
569      - requires a little reorganization, which affects the testreport results
570        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
571        so that now the conservative form is tested
572      - add a few comments
573    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
574    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
575    o add new diagnostics to seaice: advective, diffusive fluxes (only for
576      multidim-advection, for scheme 2 they are not filled) and transports,
577      thermodynamic growth rates
578    o change units of EmPmR (inside the code, + within coupling interface)
579      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
580      Affects results @ truncation level (cg2d match) and update output of
581       experiments: lab_sea(6), global_ocean.90x40x15(10),
582      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
583      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
584      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
585      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
586    
587    checkpoint59h
588    o pkg/exf:
589      - improve vectorization by moving if-statement out of loops in
590        exf_mapfields, exf_radiation
591      - exf_bulkformulae.F: introduce 2D fields and vectorize code
592    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
593    o testreport:
594      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
595        monitor & update offline_exf_seaice exp. output.
596      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
597    o pkg/seaice:
598      - bug fix in the evp solver: boundary conditions were affected be
599        masking of zMax/zMin (changes results)
600      - minor bug fix in boundary conditions in seaice_calc_strainrates
601        (changes results for no_slip)
602      - seaice_lsr.F: make interpolation of eta dependent on boundaries
603      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
604      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
605        stress formulation and no-slip boundary conditions
606    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
607      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
608    o pkg/seaice: a first HSALT time stepping equation has been checked in
609    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
610      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
611      without requiring DO-IF statements
612    o pkg/thsice:
613      use continuous power-law function for partition of energy between lateral
614      melting/freezing and thinning/thickening ; old code using step function
615      still available with #undef THSICE_FRACEN_POWERLAW
616      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
617    o testreport: change AD testing : check against results/output_adm.txt
618      using same scripts as for forward test.
619    
620    checkpoint59g
621    o adjoint testing: in preparation for changing testreport:
622      - output format: cost and grad written on separated lines
623      - ad output results in directory "results" (instead of "results_ad")
624    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
625    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
626    o pkg/ecco: allow user defined cost function contributions
627    o testreport:
628      Allow to choose (per experiment) the list of tested output variables
629       and the main variable (used to issue a pass/FAIL ) ;
630      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
631      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
632      Also modify printing of summary:
633       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
634       b) echo the list of tested variables in the individual summary.txt of
635          each experiment.
636    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
637      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
638      (but still depend on the tile decompostion of the domain).
639    o pkg/seaice: change a discretization detail to make the B-grid code
640      "more symmetric". This change is likely to remove all "ridges/leads" that
641      where quasi-aligned with the grid in B-grid solutions. It may also be
642      the solution to the stress coupling issues with the B-grid.
643    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
644      remove .cvsignore from input dir. (since testreport no longer run here).
645    o pkg/thsice:
646     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
647     - fix reshaping of sea-ice just after advection:
648       melt all the ice only if ice-volume is too small.
649     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
650       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
651     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
652    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
653      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
654    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
655      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
656      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
657      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
658      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
659      -> update output.txt
660    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
661     this affects truncation error: -> update output.txt of exp:
662      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
663      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
664    
665    checkpoint59f
666    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
667    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
668      a bounded range (in forward mode)
669    o pkg/ecco, ctrl, autodiff and mom_common:
670     internal parameter controls, completements of implementations
671    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
672    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
673      (not seem any difference in testing results).
674    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
675       at face corners.
676    o pkg/generic_advdiff:
677     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
678      loop range indices for computing vertical advection tendency
679      and do the calculation in the interior only (no overlap) ;
680      for now, only implemented for SOM advection (to save CPU time).
681     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
682    o exch2 adjoint
683      First set of changes:
684      - add exch2 hand-written adjoint templates
685      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
686        This will require cleanup in pkg/autodiff/*.F
687        (changed routines currently kept separate in verif. code/)
688      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
689        that used to hide exch2 or cubed-sphere specific code
690        (commented via 'cph-exch2')
691    o pkg/seaice
692      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
693    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
694       output of global_ocean.cs32x15.thsice .
695    
696    checkpoint59e
697    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
698      for B-grid vector (not yet tested) and C-grid vector (<- only used
699      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
700    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
701      (#ifdef ALLOW_SALT_PLUME)
702    o gather_2d/scatter_2d: removed halo regions
703    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
704      scheme and the corresponding test case (under front_relax dir). For now,
705      only available with Skew-flux form and not yet tested in realistic set-up.
706      adjoint: store directives updated, but gradient checks deteriorated,
707      so maybe GM/Redi adjoint is now broken.
708    o seaice adjoint
709      * add AREA, HEFF, HSNOW as control variable
710        (should not change lab_sea results)
711      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
712    o pkg/seaice:
713      * added computation of saltFlux in seaice_growth;
714        For time being, sea ice salinity is assumed constant
715        contribution of snow flooding to freshening of sea ice is neglected.
716        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
717        defaults to 0.0 in order to maintain backward compatibility.
718        Typical values for SEAICE_salinity are 4 to 10 g/kg.
719      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
720      * added SEAICE_availHeatFrac, which specifies fraction of surface level
721        heat content used to melt or grow ice
722      * commented out cap of HICE: it helps keep ice thinner
723      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
724      * applied OBCS T/S mask to HEFFM sea ice mask
725    
726    checkpoint59d
727    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
728     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
729     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
730    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
731     and change default value of parameter "GM_Small_Number";
732     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
733       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
734       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
735    o pkg/ecco: cost function when applying pkg/smooth to controls
736    o pkg/ctrl: add forcingPrecond run time parameter
737    o pkg/seaice:
738     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
739     - fix bug in metric terms of u-equation in LSR solver (implicit part),
740       changes verification/lab_sea
741     - rearrange implicit part of u-equation in LSR solver to make it easier to
742       read, understand, and debug. This causes changes at the truncation level.
743     - fix (serious) bug in the boundary conditions (sign error in the implicit
744       part) of the LSR solver. Changes all LSR results.
745     - fixed problem with HSNOW initialization to avoid thick snow when AREA
746       is initilized with small values - does not change lab_sea results.
747     - added HsnowFile initialization capability
748    o pkg/smooth: addition to model/src and pkg/ctrl so allow
749     initialization of pkg/smooth and application to control vector
750    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
751    o dependencies: pkg/profiles requires pkg/cal
752    o pkg/profiles:
753     - added option ALLOW_PROFILES_GENERICGRID
754         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
755         that interpolation information (grid points and coefficients) is provided
756         within the netcdf input files.
757         -> sample matlab scripts can be found in MITgcm_contrib/gael
758         that allow you to prepare netcdf input files.
759     - also modified: cleaner include statements, cleaner error print statements,
760       cleaner stops when error, and more tests of the netcdf input files consistency.
761    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
762    o pkg/seaice:
763     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
764       requires a new routine: seaice_diagnostics_fill.F
765     - make sure that seaice does not move if not forced (pressure replacement
766       method, Hibler and Ip, 1995), changes results
767     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
768     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
769       It is turned off by default (=-1.), because it changes the results.
770     - make it possible to read AREA from a file, too.
771    
772    checkpoint59c
773    o add S/R and diagnostics for oceanic mixed-layer depth
774    o move GMRedi call after all vertical mixing schemes (including KPP)
775    o pkg/thsice:
776     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
777      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
778    o pkg/obcs:
779     - bug fix for balance code
780    o pkg/seaice:
781      - allow values of SEAICE_elasticParm > 1
782      - add new parameter SEAICE_evpTauRelax as an alternative
783        to SEAICE_elasticParm
784      - make lsr boundary conditions free slip (by default), changes result
785      - add code for no slip boundary conditions for lsr
786      - set minimum of zeta to zero (and not 4e8) (changes results)
787      - add a cap on AREA after advecting AREA if seaice_growth is not called
788    o change calculation of Visbeck K:
789      - no longer depend on tapering scheme; instead, compute slope (limited
790        by GM_maxSlope). this is equivalent to what was comuted before with
791        clipping or linear tappering.
792      - fix vertical averaging (wrong by 1/2 level)
793      - leave the old version (but will not be maintained) within
794        #ifdef OLD_VISBECK_CALC / #endif
795      - update output of exp. ideal_2D_oce
796    o change error catch in calc_r_star to improve vectorization
797    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
798      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
799    o adjoint:
800      Re-organized adjoint checkpointing according to Matt Mazloff
801      (but with modifs/completions/cleanups)
802      Storing is now bundled into large arrays to optimized I/O
803      (and second step in cleanup of the_main_loop)
804    
805    checkpoint59b
806    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
807      - export/import (between ocean & coupler) fields needed for ocean DIC.
808    o pkg/seaice:
809      - get rid of three more exchanges seaice_calc_viscosities (required
810        different loop boundaries in seaice_lsr and seaice_ocean_stress)
811      - bug fix in seaice_ocean_stress (update of lab_sea required)
812      - reduce loop boundaries to necessary minimum also in seaice_evp
813      - go back to the old way of computing deltaC/Z as the adjoint likes that
814        better
815    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
816      passive tracer to an Age Tracer) + update output.txt
817    o pkg/exf:
818      - implement A-grid / C-grid selection for wind-stress input files.
819      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
820      for now, in exf_bulk_largeyeager04.F only :
821      - change implementation for case where windspeed + 2. components wind-stress
822        are read-in. AND use rhoConstFresh to convert evap.
823    o pkg/seaice:
824      - use correct EXCH_UV for wind-forcing (on A-grid).
825      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
826        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
827    o pkg/exf:
828      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
829      EXF_INTERPOLATION:
830      - merge global_with_exf/code version of exf_interp_read.F
831        to the main code ;
832      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
833        reading the file ; Important: This options needs to be defined to recover
834        previous code.
835        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
836      - no longer loose real*8 precision along the way when using exf_iprec=64.
837    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
838      - change discretisation of evp-solver in order to avoid another exchange
839        (changes lab_sea) and clean up a little
840      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
841        help the adjoint (this also changes the results slightly)
842      - add a few "_d 0" where they had been missing in seaice_evp.F
843      - cleaning up: remove unused seaice_calc_rhs.F
844    o pkg/exf: some cleaning-up:
845      - change various "constants" into runtime parameters
846      - cleaned-up Large&Yeager04 routine which should eventually
847        replace exf_bulkformulae.F (changed names of S/R and CPP)
848        and merged various ALLOW_ATM_WIND options
849     only used with thsice pkg (in thsice_get_exf.F):
850      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
851        which are used when useStabilityFct_overIce=TRUE (= the default)
852      - change default values of ice & snow emissivity and scale downward LW
853        by ice & snow emissivity.
854    o pkg/thsice:
855     fix few little problems, in thsice_calc_thickn.F:
856      - growth vertically (and not laterally) if iceFrac == iceMaskMax
857      - melt only laterally if hIce < hThinIce (as the comments say)
858      and in thsice_extend.F:
859      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
860      - start to form ice as soon as the minimum ice-volume is reachable.
861     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
862      and cpl_aim+ocn
863    o pkg/kpp
864     - move computation of surface related input fields to KPP into a new
865       subroutine kpp_forcing_surf.F
866     - remove wrong (within bi,bj loops) EXCH calls.
867     - little cleaning (add argument myThid in last position, cvs header ...)
868     - for now, fix conservation problem by exchanging KPPviscAz (may not
869       be the best fix)
870    o pkg/seaice
871     - check for inconsistent evp parameter/cpp-flag combination
872     - remove leftover errIO flat for obsolete name list error handling
873    o OpenAD
874     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
875    
876    checkpoint59a
877    o pkg/seaice: some parameter clarifications and a little bit of clean up
878    o pkg/thsice: rename run-time parameters:
879       himin       -> hIceMin
880       himin0      -> hThinIce
881       hihig       -> hThickIce
882       i0          -> i0swFrac
883       transCoef   -> bMeltCoef
884       frac_energy -> fracMelting
885      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
886       with default values (for now) that do not change the results.
887      remove old version of thsice vars advection in pkg/seaice.
888    o in FFIELDS.h:
889      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
890      - make pLoad & sIceLoad always available (but still only used if
891         ATMOSPHERIC_LOADING is #define).
892    o pkg/kpp: replaced _KPP_RL with _RL
893    o bug fixes for vertical diffusivity computations when both KPP and
894        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
895        are no longer updating the vertical diffusivity array
896        (passed as argument) but are (re-) setting those arrays.
897    o pkg/seaice: fix bug in evp solver, while doing that
898      - change (improve?) discretization of stress computations for both
899        cgrid-lsr and evp solver
900      - add a new routine to compute strain rates
901      - the above changes lab_sea results
902      - add no slip conditions for evp solver (off by default), lsr-version
903        may follow
904      - fix exchange for shear at Z-points (does not change lab_sea)
905      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
906        (to force the user to pick a time step since there is not "safe" way
907        of choosing it)
908      - add principal stress diagnostics
909      - rearrange fields for evp a little to avoid having to call a: too many
910        exchanges and b: exchanges for stress trensor components which we do
911        not have.
912      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
913        of evp, complete rewrite for lsr case (latter is does not yet work
914        in all cases)
915    o pkg/kpp: add code to have mixing in shelf ice caverns
916      - add myThid to all kpp routines (long overdue)
917    
918    checkpoint59
919    o pkg/exf:
920      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
921        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
922      - move exf header files from lower_case.h to UPPER_CASE.h ;
923        add missing cvs Header & Name
924      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
925      - add namelist param. selectStressGridPosition, exf_monFreq
926      - retire many _CLIM routines, and remove data.exf_clim
927        + params moved to data.exf
928        + climsst, climsss now handled by exf_set_gen, i.e.
929          climss?period=0 refers to constant field,
930          climss?period=-12 to monthly forcing
931      - split up namelists in data.exf
932    o pkg/seaice:
933      - remove seaice_exch and seaice_exch_uv
934      - remove superfluous exchange of theta
935      - add myThid to seaice_budget_ocean/ice
936      - add new interface for atmospheric wind forcing (C-grid only)
937        + new routine
938        + two new field (taux, tauy for stress over ice)
939        + removed one global field (DAIRN) for C-grid case only
940    o pkg/thsise
941      - 2nd set of modifs for thsice adjoint in conjunction with exf
942    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
943    
944    checkpoint58y_post
945    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
946      vertical diffusivity, similar to that in MOM4; turned on using
947      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
948      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
949    o Added capability for 3D specification of background vertical diffusion
950      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
951      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
952      "data" file that contains the 3D vertical diffusivity coefficients.
953    o ice dynamics (pkg/seaice) with thsice thermodynamics:
954      - add code within pkg thsice to advect & diffuse sea-ice fields
955      similar to (and will replace) what has been added in  seaice_advdiff.F,
956      but: - conserving Mass, Heat & Salt.
957           - better when using non-linear advection scheme (not yet fully tested)
958           - can also be used in atmospheric set-up (for now, only the diffusion).
959    
960    checkpoint58x_post
961    o IO option for global-file compact format:
962      - add options when generating topology (utils/exch2/matlab-topology-generator)
963      - add I/O capability (pkg/mdsio).
964      - adapt utils/matlab/rdmds.m to read this format.
965      for now long-line format not yet supported by pkg/mdsio (& exch2).
966    o shelfice: add a few diagnostics
967    
968    checkpoint58w_post
969    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
970      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
971      (and replace horiVertRatio in NH code).
972      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
973                         and tutorial_plume_on_slope (sensitive to truncation)
974    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
975      directly to drive seaice model (C-grid only)
976    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
977     - reintroduce computation of wind from stress,
978     - compute tau (in exf_bulkformulae.F) from windstress averaged to
979       mass points to avoid tau = 0
980     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
981    o rdmnc.m: make it work with "global" files created with gluemnc
982    o rdmnc.m : some improvements in dealing with singleton dimension
983      (tested on all testreport mnc output files).
984    o genmake2: disable pkg/profiles if netcdf test fails.
985    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
986    o move call to cal_readparms up to make calendar parameters/variable available
987      to all packages
988    
989    checkpoint58v_post
990    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
991      useDynP_inEos_Zc tested.
992    o pkg/exf: changes to properly interpolate/mask/scale initial fields
993    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
994      and portions thereof.  See read_cs.txt for description and examples.
995    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
996      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
997      following the great-circle arc between those 2 points.
998    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
999      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1000    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1001     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1002     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1003     - still needs work (not working with some options ; efficiency to improve)
1004       and serious testing.
1005     - use this scheme for temperature & salinity in 2 advection test exp.:
1006       advect_xy & advect_xz, respectively.
1007    
1008    checkpoint58u_post
1009    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1010    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1011    o testreport: add option "-skipdir" to skip some test.
1012    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1013      momentum calculation.
1014    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1015    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1016      remove checkpoint.F and the_correction_step.F (no longer used);
1017      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1018    o add option (linFSConserveTr) to correct for tracer source/sink due to
1019      Linear Free surface
1020    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1021    o pkg/thsice: fix reading mnc-pickups
1022    
1023    checkpoint58t_post
1024    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1025    o pkg/mdsio:
1026     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1027       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1028       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1029     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1030     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1031       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1032     - new S/R (to replace MDSWRITEMETA), which allows to write more
1033       informations (variable names, time ...) to meta files.
1034     - modify rdmds.m to give back the meta file content.
1035    o pkg/diagnostics: change vertical interpolation to be safer, and more
1036       flexible (define p-levels to interpolate to in data.diagnostics);
1037      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1038       diagnostic pointer.
1039    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1040    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1041    o fix multi-category seaice:
1042     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1043       SEAICE_MULTICATEGORY
1044     - fix short wave heat flux
1045    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1046       and allow to use EVP solver. Change forward lab_sea: test both EVP
1047       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1048    o Initial check-in of lab_sea adjoint
1049      (very similar to natl_box_adjoint/code_seaice)
1050      * used C-grid and EVP solver
1051      * used KPP, GM/Redi
1052      * uses inAdExact=.TRUE.
1053      * gradient checks fail for both ADM and TLM
1054        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1055        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1056        issue is related to forward mismatch between g77 an ifort
1057    o pkg/seaice: overhaul of thermodynamics
1058     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1059     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1060     - move a few global fields out of SEAICE.h into seaice_growth.F and
1061       make them 2D (FICE/QNETO/ ...)
1062     - remove FO (it is the same as QNETO)
1063     - introduce a few local fields to avoid modifying external fields such
1064       as atemp, etc.
1065    
1066    checkpoint58s_post
1067    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1068      changed exf_set_gen.F so that
1069        genperiod=0 means input file is one time-constant field and
1070        genperiod=-12 means input file contains 12 monthly means
1071    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1072      this affects truncation error ; generate new output file for exp. which
1073      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1074        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1075        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1076        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1077        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1078        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1079    o start implementation of deep-atmosphere and anelastic formulation
1080    o verification: remove 2nd copy of input files and use script "prepare_run"
1081      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1082    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1083    o profiles: fix for multithreaded case
1084    
1085    o diagnostics: rename few diags:
1086      s/'PRESSURE'/'RCENTER '/g
1087      s/'TICE    '/'oceFreez'/g
1088      s/'TAUX    '/'oceTAUX '/g
1089      s/'TAUY    '/'oceTAUY '/g
1090      s/'SWFLUX  '/'oceQsw  '/g
1091      s/DIFx/DFxE/g
1092      s/DIFy/DFyE/g
1093      and add few ocean-forcing diagnostics:
1094      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1095    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1096      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1097      as actual snow thickness.  It now refers everywhere to effective snow
1098      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1099    
1100    checkpoint58r_post
1101    o modifications to pkg/seaice/growth.F, which change results of
1102      lab_sea experiment: fixes pertain to melting snow over open water, to
1103      masking EVAP under sea ice, and to using the correct AREA variable for
1104      computations of EVAP, PRECIP, HSNOW, and GHEFF
1105    o add ability to read bathy, salt, and theta using MNC (off by def)
1106    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1107      both are turned off by default and do no change any results
1108    o seaice advection with pkg/thsice: a step toward the use of non-linear
1109      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1110    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1111      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1112      in natl_box (affects results @ truncation level: update output.txt)
1113    o multi-threading and IO:
1114      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1115      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1116        (needed to work with SingleCpuIO): tested in all verif. exp.
1117    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1118      affects the results (but none of the verification test uses this scheme).
1119    o Adding some pkg/diagnostics capability to pkg/seaice
1120      (will certainly be subject to changes)
1121    o ctrl: adding new control variables:
1122      lwflux, lwdown, evap, snowprecip, apressure, runoff
1123    
1124    checkpoint58q_post
1125    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1126      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1127      high_res_cube configuration by 4% on Columbia.
1128    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1129      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1130      dynamical allocation (seems to work in multi-threaded).
1131    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1132      single CPU io) so that TAF does not have to see EESUPPORT.h
1133    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1134    
1135    checkpoint58p_post
1136    o obcs: stop if obcs is used with useCDscheme = .true.
1137    o shelfice:
1138     - fix a sign error so that no slip at shelfice interface works
1139     - remove stop for combination non-hydrostatic code and shelfice. That does
1140       not mean, that the results are correct, but at least they are numerically
1141       stable
1142    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1143    o added adjoint exch routined for all exch*3d* routines
1144      and updated flow directives
1145    
1146    checkpoint58o_post
1147    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1148      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1149    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1150      and clean-up reading/writing of pickup files.
1151    o fix local version of read/write pickup (NH part) in rotating_tank/code
1152    o simplify EXCH interface:
1153     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1154     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1155    o added the regrid package
1156    o shelfice:
1157     - add a simple boundary layer scheme to reduce noise
1158     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1159    
1160    checkpoint58n_post
1161    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1162       local variable (not in common block).
1163    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1164      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1165      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1166        to work with SingleCpuIO.
1167    o add "_d 0" to real constant of pkg/cfc subroutines ;
1168       update exp. cfc_exemple & tutorial_cfc_offline output files.
1169    o multi-threading and IO:
1170      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1171        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1172      - barrier before and after reading.
1173      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1174      - avoid using MDS_WRITELOCAL for LAND pkg output.
1175      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1176        common-block variables ; Allows multi-threading with master-thread IO.
1177    o change default MAX_NO_THREADS from 32 to 4 ;
1178      and stop cleanly when MAX_NO_THREADS is too small.
1179    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1180    
1181    checkpoint58m_post
1182    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1183       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1184    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1185       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1186       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1187    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1188        add MITgcm_tutorials (= code + all the tutorials)
1189    o ecco, option to compute cost for total ssh (mean+anom)
1190    o consistent with addition of ptracer and ssh in pkg/profiles
1191    o profiles: adding ptracer and ssh
1192    o testreport: change multi-test output-file name
1193      (from output.txt.{name} to output.{name}.txt)
1194    o profiles: now ok for mutli-tiles case
1195    o seaice: add 4 parameters for different advection schemes for area,
1196      (effective) seaice thickness, enthalphy, and snow height. Their default
1197      is the standard parameter SEAICEadvScheme
1198    o calc_gw:
1199     - add cosFacU in zonal viscous flux (harmonic.visc.).
1200     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1201       of tutorial_plume_on_slope.
1202    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1203    o calc_gw: true flux-form, account for horizontal grid spacing.
1204      update rotating_tank results, but not plume_on_slope (affected at
1205      truncation level, 11 digits).
1206    
1207    checkpoint58l_post
1208    o calc_gw:
1209     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1210     - remove side-drag for now (need to fix it); update plume_on_slope results.
1211     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1212    o commit code to make SST/SSS weights spatially variable
1213      (based on either variable in-situ or variable initial T/S weights)
1214    o pkg/ecco:
1215      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1216        now based on horizontally varying weights wthetaLev, wsaltLev
1217      * cost_averagesflags now returns year indices in addition to day, month
1218      * sflux balance is performed on annual basis
1219        (sflxumm, sfluxmm2, bal_sfluxmm)
1220      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1221        including separate counting and multipliers
1222    o pkg/rbcs
1223      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1224    
1225    checkpoint58k_post
1226    o testreport:
1227     - always build in dir. "build" (if not there, mkdir build instead of building
1228       & running in input)
1229     - run in dir run (if it exists), in build otherwise.
1230     - call prepare_run (if input/prepare_run exists)
1231     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1232    o pkg/exf modifications to interpolation and rotation routines for more
1233       reasonable treatment of North Pole singularity: for tracers North Pole
1234       value is set to northernmost zonal-mean value, for zonal velocity it is
1235       set to zero, and for meridional velocity it is set to northernmost value.
1236    o pkg/exf/exf_check_range.F
1237     - add tile index to diagnostics and move stop statement to the very
1238       end of the routine.
1239    o pkg/diagnostics: (diagnostics_main_init.F)
1240      define title of isomorphic variables according to the current config.
1241    o pkg/thsice with pkg/seaice dynamics:
1242    - fix domain of computation (interior only, required for exf) and do exchanges
1243    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1244    o towards a standard way of dealing with multi-threading in MONITOR
1245      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1246    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1247       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1248    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1249    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1250    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1251       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1252    o tracer advection:
1253     - clean-up and simplify calc_common_factors.F
1254     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1255       advection subroutine (but still not used within DST advection S/R)
1256    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1257    
1258    checkpoint58j_post
1259    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1260      from file (collects calls previously in FORWARD_STEP)
1261    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1262    o adjoint store dir. adjusted accordingly
1263    o genmake2
1264      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1265    
1266    checkpoint58i_post
1267    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1268      on wind stress (SEAICEstressFactor defaults to 1.)
1269    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1270      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1271    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1272      on CS-grid: no longer loosing mass.
1273    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1274    o pkg/ggl90: fix sloppy output and fix a bug
1275    o pkg/seaice: added SEAICEuseEVPpickup parameter
1276      - Set to false in order to start EVP solver with
1277        non-EVP pickup files when using SEAICEuseEVP
1278      - fix sign error in diffusion in seaice_calc_rhs
1279    
1280    checkpoint58h_post
1281    * Modifications for bottom topography control
1282      o replace hFacC by _hFacC at various places
1283      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1284      o add non-self-adjoint cg2d_nsa
1285      o update autodiff support routines
1286      o re-initialise hfac after ctrl_depth_ini
1287      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1288    * Adding verification for 5x5 box (4-layer) bottom topography control
1289    
1290    checkpoint58g_post
1291    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1292       used for mean seasonal cycle, mean diurnal cycle); add an example
1293       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1294    o pkg/ggl90:
1295      - add parameter (minimum surface kinetic energy)
1296      - fix bug (avoiding division by zero)
1297    o couple pkg/thsice to pkg/seaice:
1298      - modify advection in seaice to accomodate new scalar fields to be advected
1299      - only muliDimAdection scheme work with seaice/thsice
1300      - mapping of thsice-variables to seaice-variables, back and forth
1301      - does not break the verification experiments, but does not give the
1302        desired results either
1303    o pkg/seaice
1304      - make (default) second order advection a bit less confusing?
1305    
1306    checkpoint58f_post
1307    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1308      to pkg/seaice):
1309      - new routines thsice_map_exf and thsice_get_exf provide the interface
1310      - add an additional formal parameter to thsice_solve4temp
1311    o pkg/exf:
1312      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1313      - correct Stefan-Boltzmann constant
1314      - new parameter for longwave surface emittance
1315      - separate some stuff from exf_bulkformulae into new routines  
1316        exf_radiation, exf_wind
1317      - add new parameters and constants: longwave emissivity for ocean, ice
1318        and snow, evaporation parameters over ice
1319      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1320        either wind from stress or stress from wind
1321    o pkg/thSIce:
1322    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1323    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1324       and THSICE_CALC_THICKN
1325    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1326    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1327      to make debugging easier.
1328    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1329    o pkg/bulk_force:
1330      - clean-up comments and parameters ;
1331      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1332    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1333      generate new output for test-experiment: aim.5l_cs.thSI
1334    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1335      testreport accordingly
1336    
1337    checkpoint58e_post
1338    o SEAICE_CGRID adjoint done
1339    o R_STAR adjoint implemented.
1340      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1341      * need to sort out init. of h0facc, etc.
1342    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1343      to be able to use it in pure forward.
1344    
1345    checkpoint58d_post
1346    o upgrade simple test-experiment to tutorial example:
1347     step.1: duplicate the experiment and (step.2) will remove the old copy.
1348      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1349      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1350      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1351      tutorial_global_oce_biogeo    <- copy of dic_example
1352      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1353      tutorial_plume_on_slope       <- copy of plume_on_slope
1354      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1355      tutorial_global_oce_optim     <- empty for now (David ?)
1356      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1357     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1358    o correct a sign problem in cost_scat.F
1359    o obcs and ptracers: fix boundary conditions for advections schemes
1360      with larger stencil
1361    o thsice adjoint: start
1362    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1363      completeness
1364    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1365      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1366    o ptracers adjoint:
1367      * avoid extensive recomputatations
1368      * fix missing re-init. of gptr (missed by TAF)
1369    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1370      me to turn off the excessive output to STDOUT that this package produces
1371    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1372      and add those terms in Vector-Invariant formulation.
1373    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1374      if the control period (xx_hfluxperiod etc) is 0
1375    o in profiles pkg, clean routines and fix details
1376    o in ecco pkg, reading ssh data:
1377      fix problem in case the model does not start at iter0=0
1378    o fix mnc-pickup/restart for ptracers
1379    o new package prifiles:
1380      code to compute profile-based cost by Gael Forget
1381      (modifs in ecco, ctrl, autodiff)
1382    o Benign bug fix in initialization (spotted by M. Mazloff) of
1383      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1384    
1385    checkpoint58c_post
1386    o adjoint: finish NLFS adjoint and provide reference output in
1387      verification/global_ocean.90x40x15/results_ad_nlfs
1388    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1389      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1390      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1391      with SEAICE_CGRID defined.
1392    o move calendarDumps from "data" to "data.cal" and clean-up the code
1393      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1394    o add useEXF & useCAL flags (for now, set in hard-coded way)
1395    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1396      (were missing in NH mode, and wrong in quasihydrostatic mode).
1397      waiting for Chris updated version of calc_gw to add those CALLs.
1398    o fix bug in quasihydrostatic S/R ;
1399      add a test for this option: global_ocean.90x40x15.qshyd
1400    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1401      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1402    o add on/off flag useOffLine for package OFFLINE
1403    o seaice:
1404      - modify advection so that it works also on the C-grid
1405      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1406        problem in multi-tile runs with C-grid
1407      - add flags for clipping ice velocities and/or masking solver forcing
1408      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1409        C-grid solver
1410      - added a few comments to seaice_diffusion.F
1411      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1412        are now exclusive)
1413      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1414        required re-ordering the code a little:
1415       + make DAIRN global variable (defined in SEAICE)
1416       + move computation of the viscosities eta and zeta into a new separate
1417         routine (because I need to recompute them in seaice_ocean_stress.F)
1418    
1419    checkpoint58b_post
1420    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1421      update output.txt of exp. aim.5l_cs.thSI
1422    o various mnc cleanups and improvements:
1423      + shrink lookup tables by factor of ~4
1424      + better error reporting when running out of lookup space
1425      + able to handle longer path/file names (up to 500 chars)
1426    o adjoint:
1427      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1428      - TBD: "hidden" mom_vecinv recomp. in dynamics
1429    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1430     (allow to differentiate between forcing components using new integer flags:
1431      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1432     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1433    o ecco
1434      - enable trend removal from SSH anomaly obs.
1435    o adjoint
1436      - a fix for PmEpR when #undef EXACT_CONSERV
1437      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1438      - try to fix "hidden" recomp. in forward_step for NLFS
1439        (NLFS seems broken sometimes after I checked it in)
1440    o seaice:
1441     - add c-grid version of the dynamic solver:
1442       + three new routines that are the c-grid substitute lsr, dynsolver
1443         and ostres
1444       + put a few fields that were local to dynsolver into global common
1445         blocks, so that I can move the computation of stresses etc into
1446         seaice_lsr (saves coding but may break the adjoint).
1447     - replace more hardwired parameters by runtime parameters
1448     - add ice masks that mask the rhs of the implicit solvers where there
1449       is no ice (commented out in seaice_dynsolver, because i am not sure
1450       if this works properly), eventually this should replace the clipping
1451       of ice velocities in seaice_dynsolver to +/-40cm/s.
1452    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1453      include it only where its needed
1454    o move balancing of fluxes before the call of external_forcing_surf
1455    o seaice:
1456      - correct units of turning angles (now they are really in degrees)
1457      - move computation of GWATX/Y out of main routine into dynsolver
1458      - initialize GWATX/Y in seaice_init
1459    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1460      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1461    o seaice: add runtime flags for turning angles (default to zero)
1462    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1463      and trend from exf forcing and ctrl control adjustments
1464    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1465      (since checkpoint57x_post)
1466    o change the default rotation period to 86164.s = the Earth rotation
1467    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1468      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1469    o seaice advection: add code for choosing between the default (2nd order
1470      central differences) and multiDim advection schemes provided by
1471      pkg/generic_advdiff
1472    o seaice:
1473      - removed all references to SEAICE_GRID.h fields from
1474        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1475        (cubed-sphere configuration will change a little)
1476      - grid computations in seaice_init are obsolete now.
1477      - cleaned up code a little so that is easier to read (hopefully).
1478      - added new (better?) discretizations of default advection and diffusion
1479        (turn on with SEAICEuseFluxForm)
1480      - replace 1 in 3d global fields by kSurface in growth.F
1481      
1482    checkpoint58a_post
1483    o seaice:
1484      - bug fix in advect.F
1485    o shelfice:
1486      - separate shelfice load anomaly from pload (breaks with time
1487        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1488        Its default is 0., but it may be computed more cleverly from (unknown)
1489        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1490        done offline. A good approximation of the pressure load anomaly is
1491        necessary to avoid large initial adjustment processes underneath
1492        deep-reaching shelfice.
1493      - small fix in ISOMIP shelfice_thermodynamics
1494      - add more sophisticated thermodynamics of Hellmer (1989), this is
1495        now the default
1496      - give a few constants more intuitive names
1497    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1498      if bulk formulae are used in long integration (especially EmPmR). Turn
1499      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1500      if balancePrintMean, the imbalance that is substracted is printed to
1501      STDOUT.
1502    o fix bug (typo) in obcs_apply_eta.F
1503    o add a new package shelfice which enables us to model the circulation
1504      underneath shelf-ice with draughts of hundreds of meters.
1505     - works
1506     - to do: + include improved thermodynamics
1507              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1508                instead of new field kTopC
1509              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1510                instead of new field R_shelfIce and new code in ini_depth.F
1511                and ini_mask_etc.F?
1512              + adjust vertical mixing schemes?
1513    o seaice pkg:
1514     - add a cpp-flag to include a simple formula for a salinity dependent
1515       freezing point of sea water at the surface
1516     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1517       meridional stresses are now different (and hopefully correct)
1518    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1519       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1520       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1521    o pkg/diagnostics: add options and parameters for regional-statistics
1522       diagnostics ; define regions by reading a region-mask from a file
1523       (might add other options later)
1524    o pkg/bulk_force:
1525     - add option and parameters to use AIM surface-flux formulae.
1526     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1527       others forcing fields (defined in PARM05, parameter file "data") are loaded
1528       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1529     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1530     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1531     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1532       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1533     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1534    
1535    checkpoint58
1536    o add "--embed-source" option to genmake2 which, when the supporting
1537      tools can be compiled (as determined by genmake2) will turn on the
1538      embed_files package which then embeds the entire MITgcm source code
1539      (*.[fFhc] + Makefile) used for the build within the executable
1540      - requested by CNH but off by default
1541      - adds a paltry <9MB to the mitgcmuv executable in most cases
1542      - only writes the output when useEMBEDSRC in eedata is true
1543    o clean up 3-dim. relaxation codes:
1544      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1545      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1546      * Thanks to Tom Haine for testing!
1547    
1548    checkpoint57z_post
1549    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1550      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1551    o fix the pickup behavior for obcs in combination with ptracers
1552    o fix a bug in ptracers_external_fields_load
1553    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1554      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1555    o transfered surface NH pressure to eta field (if exactConserv).
1556    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1557         and update lab_sea output.txt file.
1558    o completing 3-dim. relaxation code: additional term
1559         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1560      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1561      * At compile time, in "EXF_OPTIONS.h" set
1562          #define  ALLOW_CLIMTEMP_RELAXATION
1563          #define  ALLOW_CLIMSALT_RELAXATION
1564      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1565          tauThetaClimRelax3Dim = 15552000.0,
1566          tauSaltClimRelax3Dim  = 15552000.0,
1567      * 3 cases:
1568          1) Use a constant-in-time 3-dim. field
1569          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1570          3) Real-time relax. to time-evolving prescribed field
1571    o Adding Laplacian-type smoothness constraint on
1572      initial and boundary (forcing) controls (ic, bc)
1573      * enable at compile-time via
1574        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1575      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1576      * Absolute scale somewhat unclear so far
1577      * no area weighting was included since no other cost term does so far
1578    
1579    checkpoint57y_post
1580    First step for a NLFS adjoint
1581    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1582    o new init. routines for calc_r_star, calc_surf_dr
1583    o still need to deal with ini_masks_etc
1584    o testreport seemed happy
1585    checkpoint57y_pre
1586    
1587    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1588    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1589    o add new offset feature to offline pkg (plus minor cleanup)
1590    o cfc fixes for final year of integration
1591    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1592      be in GCHEM_OPTIONS).
1593    
1594    checkpoint57x_post
1595    o fix testreport Pb in multiple test experiment.
1596    o cleanup our namelist syntax in verification:
1597      - make it more F95 standards compliant (some work still needed)
1598      - allows the vast majority of our tests to work with gfortran
1599    o Non-Hydrostatic:
1600     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1601     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1602    o Allow to apply AB on T,S rather than on AB(gT,gS):
1603     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1604     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1605       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1606     - need a "clever" read_pickup to restart from the other AB formulation
1607    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1608    o remove some unused variables (reduces number of compiler warnings)
1609    o adjoint
1610      * Disable useVariableViscosity for adjoint for time being
1611        (there are a number of extensive recomputations)
1612      * Initialize certain variables needed for adjoint
1613    
1614    checkpoint57w_post
1615    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1616                 fix the singleCpuIO RS version of MDSWRITEFIELD
1617       and add a WARNING if using globalFiles=T with multi-processors.
1618    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1619      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1620    o tracer advection scheme:
1621      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1622       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1623       was not very convenient).
1624      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1625       (further tests needed for the implicit DST & Flux-Limiter schemes).
1626    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1627      and sRef for convenience, handy, when you want to initialize
1628      ptracers in a large domain with a constant non-zero value. Also,
1629      untangle ptracers_init.F a little.
1630    
1631    checkpoint57v_post
1632    o change dome exp. to use variable viscosity in side-drag terms.
1633    o remove all the files from the cfc_offline test since they are now
1634      incorporated into tutorial_cfc_offline which has been producing
1635      identical results for a few days of testing
1636    o add new parameter: sideDragFactor to enable half-slip-side BC
1637      and change side-drag S/R to use viscosity from mom_calc_visc
1638      (can switch back by setting sideDragFactor=0.); affects results at
1639      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1640       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1641    o vorticity & strain are now computed without masking, to account for
1642      no-slip-side BC in variable viscosity calculation ; mask is applied
1643      anyway later on, before computing advection/coriolis terms.
1644    o modify exp4 to test new obcs support for reading from external files
1645      and for passive tracers
1646    o fix behavior of ptracers_monitor when monitor output is written to a
1647      netcdf-file; still not independent of monitor.F (writes in the same
1648      file).
1649    o change default value of tRef (put a uniform, meaningful value for ocean
1650      & atmos) and initialize sRef (was missing, as Martin mentioned).
1651    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1652      to be proportional to enstrophy dissipation length.  Thus,
1653       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1654      This is now consistent with Smagorinsky and with the manual.
1655    
1656    checkpoint57u_post
1657    o OBCS and PTRACERS: add open boundary support for passive tracers
1658      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1659        OB-values from file; this is not different from the way theta and salinity
1660        are treated
1661      - however, Orlanski-radiation conditions are not supported, and the model
1662        will stop if you use pTracers and Orlanski at the same time.
1663      - beefed up the rountine obcs_external_fields_load: now only those open
1664        boundary values are overwritten with values from files for which there
1665        are really files, otherwise the OB-fields remain untouched. This makes
1666        it possible to use different OBs at different ends of the domain (as
1667        with EXF)
1668    o reduce number of exch calls in shap_filt (s2).
1669    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1670      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1671    
1672    checkpoint57t_post
1673    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1674    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1675      same truncation, independent of the face number: affects affects several
1676      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1677    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1678      note that biharmonic viscosity + no-slip was not tested in any experiment.
1679    o fix bug in non-linear free-surf side-drag ; generate new output for
1680      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1681    o make mnc honor the writeBinaryPrec flag for most kinds of output
1682    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1683    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1684      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1685    o add brackets in multi-terms sum to get same truncation, independent of
1686      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1687      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1688    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1689      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1690      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1691      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1692      Suggested values of viscosity parameters found in mom_calc_visc.
1693      Many new viscosity diagnostics available.
1694    
1695    checkpoint57s_post
1696    o Add clearing-house for viscosity calculations, mom_calc_visc and
1697      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1698      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1699      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1700      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1701      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1702      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1703      ViscAhStrain and viscAhTension are now retired.
1704    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1705    o In response to JMC's bug report, genmake2 now ignores any soft-links
1706      that it finds in the *current* directory when searching for files.
1707      Soft-links found in any other source directories will still work as
1708      they did before.
1709    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1710      a C routine to unlimit the stack size
1711    o mnc-ify pkg/aim snapshot vars
1712    o mnc-ify pkg/land as requested by Daniel
1713    o various changes to mnc including:
1714      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1715      - output can now be grouped so that all files within a group
1716          change the ITER portion of their names in lock-step together
1717      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1718          and works with both EXCH1 and EXCH2 (but needs more testing)
1719      - writing works for all verification test cases w/ g77 on Linux
1720    
1721    checkpoint57r_post
1722    o make MNC variable initialization happen earlier
1723    o add diagnostics for (almost) each term of the momentum Eq.
1724    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1725    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1726    o remove MINIMAL_TAVE_OUTPUT option ;
1727      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1728    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1729      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1730    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1731    o add time-dependent SST, SSS control
1732    o cost terms in ecco/ modularized (new cost_generic.F)
1733    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1734    o new infrastructure for seaice model vs. obs misfits in seaice/
1735      * driver from the_main_loop.F is seaice_cost_driver.F
1736      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1737      * gradient check in Exp. 6a of natl_box_adjoint/
1738    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1739      (see README file)
1740    
1741    checkpoint57q_post
1742    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1743    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1744      - bug was reported by Jean-Michel and Ian Fenty
1745    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1746      update exp. cpl_aim+ocn output.
1747    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1748      Needed for high-res. runs with large global files
1749      to be able to limit tapelev size
1750    o Changed some tests for adjoint:
1751      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1752      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1753      * global_ocean.90x40x15/ back to default 3-level checkpointing
1754    o Modifications to enable scripted COMMON to MODULE conversion
1755      * verification/OpenAD/code/ has necessary scripts and description;
1756      * converts, compiles and runs successfully;
1757    
1758    checkpoint57p_post
1759    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1760    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1761      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1762    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1763    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1764      (was already the case for dissipation with mom_vecinv,
1765       and also the case for grad.PhiHyd when staggered-timeStep)
1766      This will allow to put dissipation out-off the AB time-stepping.
1767     Unfortunately, affects truncation error. Update output of exp. that "fails"
1768      (cg2d matching number) and leave the others for later: front_relax(10),
1769      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1770      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1771    
1772    checkpoint57o_post
1773    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1774      (2) its ready to be documented during the 20050801 DocFest
1775    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1776      for ideal_2D_oce and lab_sea on linux_ia32_g77
1777    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1778      in global1x1_tot/code_seaice_adj to access indices 32, 33
1779      (worth another tag)
1780    
1781    checkpoint57n_post
1782    o adding precip control xx_precip 32
1783    o adding swflux control xx_swflux 33
1784    o Replacing 10 forcing penalty cost routines by 1 generic.
1785    o Implementing partitioning in time-mean and variable adjustment
1786      for atmos. state.
1787    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1788    o in natl_box_adjoint:
1789      * updated exp 1 to 10
1790        (but does not have time-mean vs. variable split results yet)
1791    o updated global1x1/*_seaice_adj/
1792      to incorporate latest changes
1793    o enable useSingleCpuIO for mdsio vector routines
1794      (applies in particular to tapelev I/O)
1795    o removed inefficient K-loop in all active_file*control*.F
1796    
1797    checkpoint57m_post
1798    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1799      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1800    o pkg/exch2: filling of face-corner halo regions is optional
1801      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1802    
1803    checkpoint57l_post
1804     tag before updating tutorials (pre-release-2)
1805    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1806       for output and interpolation of input fields onto model grid)
1807    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1808       Affects results of exp. rotating_tank ; update output.txt.
1809    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1810          and taking the square quantity and/or using a fraction-weight field.
1811    o fix aim_diagnostics_init.F mate numbers.
1812    o add mnc output capability to diagnostics/diagstat and update
1813      our cvsignore files for the ACSII output generated
1814    
1815    checkpoint57k_post
1816    o lab_sea now uses diagnostics package and provides a suite of
1817      new EXF diagnostics output.
1818    
1819    checkpoint57j_post
1820    o exf
1821      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1822        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1823        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1824      * extended diagnostics output
1825        - now includes all EXF variables
1826        - hs, hl moved to common block
1827        - separate S/R for diagnostics, called after ctrl vector is added
1828        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1829        - EXFqnet contains true Qnet (i.e. includes qsw)
1830      * updated verif. lab_sea, global_with_exf
1831      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1832        to ensure that diagnostics sees a true EXFqnet
1833    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1834    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1835      several times with different frequencies.
1836    o mnc-ify the thsice package as requested by Daniel Enderton
1837      - the monitor--MNC output needs work
1838      - many attributes need to be added (most are currently blank)
1839    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1840      - many attributes need to be added (most are currently blank)
1841    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1842    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1843    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1844      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1845         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1846    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1847     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1848    
1849    checkpoint57i_post
1850    o Diagnostics package was changed: diagnostic allocation is now deactivated
1851      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1852    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1853      add 1rst Order upwind vertical Shear.
1854    o add a quick fix for A/B checkpointing in OFFLINE mode
1855    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1856      end-run around the C/Fortran linking horror in eesup/src/timers.F
1857    o added pkg/runclock: allows user to terminate run based on wall clock
1858    o added non-hydrostatic scaling parameter: nh_am2
1859    o pkg/my82: futile attempt to make results compiler-independent by adding
1860      some "_d 0", etc. no effect.
1861    o for mnc output, fill the 'T' coordinate var with myTime and create a
1862      separate 'iter' variable for iteration count
1863    o pkg/diagnostics:
1864      add new capability: output of Global/Regional & per-level statistics ;
1865      tested against monitor output (including land & thSIce) on various exp.
1866    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1867    
1868    checkpoint57h_done
1869      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1870      data.diagnostics, data.gchem, data.ptracers) is done.
1871    
1872    o pkg/diagnostics: prepare for Global/Regional statistics.
1873      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1874    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1875      and rename it: DIFFERENT_MULTIPLE
1876    
1877    checkpoint57h_post
1878    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1879    o pkg/diagnostics: change output frequency, now in seconds (instead
1880      of Nb of iterations). This requires to change data.diagnostics.
1881    checkpoint57h_pre
1882    
1883    o in mnc, let the user create the output dir if both mnc_outdir_date
1884      and mnc_outdir_num are false
1885    o add fflags() to pkg/diagnostics which allows one to specify, on a
1886      per-file basis, the file precision [default behavior is unchanged]
1887    o added diagnostics to pkg/kpp, including computation of mixed layer
1888      depth based on a temperature/density criterion
1889    o updated verification/natl_box to test the new pkg/kpp diagnostics
1890    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1891    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1892    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1893      not mnc -- this mistake was found by JMC and is now corrected
1894    
1895    checkpoint57g_post
1896    o add Adams-Bashforth 3rd Order time stepping:
1897      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1898      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1899    checkpoint57g_pre
1900    
1901    o make lambda[Theta,Salt]ClimRelax spatially varying
1902      (default remains spatially uniform constant based on tau)
1903    o added new control variables
1904      * init. uVel, vVel, etanN
1905      * lambda[Theta,Salt]ClimRelax
1906    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1907      (suggested by G. Forget)
1908    
1909    checkpoint57f_post
1910    o add parameter "baseTime" = model base time = time at iteration zero
1911      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1912      account for baseTime shift
1913    o move Coriolis arrays from PARAMS.h to GRID.h
1914    checkpoint57f_pre
1915    
1916    o mnc-ifying the seaice package
1917    o introduced an alternative length scale calculation for use in the limiting
1918      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1919    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1920    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1921      as well as grad(vort3).  Made it compatible with both approximate form
1922      for the cubed sphere and full form of these gradients.  Added flag
1923      useFullLeith to select between approximate and full form.  
1924    o add "d0" in getcon.F to reduce differences between compilers/platforms
1925      update output.txt of exp. fizhi-gridalt-hs
1926    o change port_rand funtion to allow to set the seed.
1927    o fix obscure MNC bug involving conversion between reals and integers
1928      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1929        new version is now more standards-compliant
1930    o adjoint-related modifications
1931      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1932      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1933      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1934    
1935    checkpoint57e_post
1936    o Adding eddy stress controls a la Ferreira et al.
1937    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1938    
1939    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1940      update output.txt of exp. fizhi-gridalt-hs
1941    o add more "Z" dimensions and associated coordinate vars to MNC
1942    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1943    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1944      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1945      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1946      months and years.  Requires pkg/cal.
1947    o diagnostics: add pickup functionality
1948      - off by default for backwards compatibility
1949      - current version only uses MDSIO -- MNC will be added
1950    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1951    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1952    
1953    checkpoint57d_post
1954    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1955    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1956      output from the diagnostics package
1957    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1958    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1959      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1960    o add coordinate variables to the MNC output from the diagnostics package
1961    o change MNC-flags default value: true when useMNC=TRUE
1962    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1963      the ability (off by default) to read the grid information using MNC
1964    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1965    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1966    o do snap-shot diagnostics at the middle of the time-interval (instead of
1967      at the end).
1968    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1969      new test for AIM with thSIce + slab-ocean
1970    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1971    o move state variable diagnostics to the beginning of the time step ;
1972      (note: still needs some work specially for snap-shot diagnostics)
1973      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1974    
1975    checkpoint57c_post
1976    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1977    o generate new output.txt files on faulks with g77 & the new -ieee option
1978    checkpoint57c_pre
1979    
1980    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1981      update output.txt of exp. global_ocean.90x40x15
1982    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1983      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1984    o add saltFlux(+File) forcing capability with periodicExternalForcing
1985    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1986    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1987    o improvements for the MNC output from DIAGNOSTICS:
1988      - correct handling of the unlimitied dimension
1989      - all dims now have associated coordinate variables
1990      - variables located at U, V, and Corner ("Z") points are now written
1991        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1992        *all* data points are output
1993    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1994    o added pkg/seaice/seaice_monitor.F
1995    o mdsio_readfield.F can now read files visible only to master MPI process.
1996    o pkg/seaice: some test code for ice-modified ocean stress
1997    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1998      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1999      spurious negative numbers for precipitation and humidity.  Will cause
2000      some small numerical differences for integrations using pkg/exf/exf_interp.F.
2001    o pkg/ctrl/
2002      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
2003        May be enabled via doPackDiag
2004      *  introduce z-scaling of
2005         + gradient (doZscalePack) and
2006         + control (doZscaleUnpack)
2007    o pkg/mdsio/
2008      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
2009      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
2010    
2011    checkpoint57b_post
2012    o simplify options in diagnostics_fill arguments (remove weird combinations)
2013    o fix MNC coordinate variables so that they now contain per-face index
2014      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
2015      general, EXCH2 grids are only aligned to a "local" coordinate system
2016    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
2017    o Implement instantaneous output within pkg diagnostics:
2018      setting a negative frequency in data.diagnostics produces
2019     "snap-shot" output (as opposed to time-average if freq > 0)
2020    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
2021      NOTE: change ptracer diagnostics name: use 2 characters to work with
2022            more than 9 tracers. Add also diagnostics of advect & diffus flux.
2023    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
2024      becomes the coordinate variable for the 'T' dimension
2025    o add CF-style coordinate variables to MNC
2026      - just a first cut:  numbers are meaningless on the cubesphere and
2027        missing along the T axis but otherwise it works!
2028    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
2029    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
2030    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
2031      this is based directly on what the model compute, so that the content of
2032      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
2033    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
2034    o clean up build options files for SunOS, in particular
2035      - remove -traditional from xmakedepend
2036      - change -xarch=v9 to -xarch=native for f77
2037      - restore use of make (not gmake)
2038      - add CC=gcc if using g77
2039    o changes per discussion of AM, JMC, & EH3 today:
2040      - move redundant "grid" variables out of "state" -- in preparation of
2041        creating proper CF-style coordinate variables and in recognition
2042        that any/all grid variables can be easily copied (eg. w/NCO) from
2043        the grid files into any of the other NetCDF files
2044      - *always* output grid variables with MDSIO (this will eventually be
2045        changed)
2046      - output MNC grid file if useMNC is true
2047    o every instance of _END_MASTER() has been found and replaced with
2048      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2049      preprocessors
2050    o re-arrange diagnostics pkg initialisation:
2051     - allow each package to extend the available diagnostics list
2052     - add some checking and fix small problems (multi-threaded, ...)
2053     - new S/R diagnostics_fill (replace fill_diagnostics):
2054       look through the short list of active diag. (instead of the long list)
2055       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2056    
2057    checkpoint57a_post
2058    o this set of changes restores TAMC compatibility
2059      tested for global_ocean.90x40x15 adjoint on trough
2060      (what a pain)
2061    
2062    checkpoint57a_pre
2063    o some modifs in tools/build_options for sunos
2064    o call ctrl_pack for ctrl at end for optimcycle=0
2065    
2066    checkpoint57
2067    o add horizontal bi-harmonic viscosity for vertical velocity
2068      - new parameter viscA4W (defaults to viscA4)
2069      - affects only non-hydrostatic code
2070      - to be done: no-slip lateral boundary conditions
2071    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2072    o implement Implicit Vertical advection for pTracers
2073    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2074      (implemented also for implicit vertical diffusion & advection)
2075    o OBCS: extend application of tracer open boundary conditions
2076      to a strip beyond the boundary of width Olx/Oly
2077    o add call monitor to TAF set of required calls (flow directives)
2078      and include in natl_box_adjoint
2079    o untangle a few ifdefs related to cost, ctrl, autodiff
2080      untangel a few ALLOW_ECCO_OPTIMIZATION
2081    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2082      (theta2, salt2 in ecco_cost_weights)
2083    
2084    checkpoint56c_post
2085    o OBCS as control variables
2086      - update ctrl_ad_diff.list, obcs_ad_diff.list
2087      - remove balance of obcs controls from default
2088      - fix index bug nobcs in ctrl_init
2089      - fix dummy fields filen in ctrl_pack
2090      - add dummy weights for obcs
2091    o lsopt: comment out fort.94 output
2092    o optim:
2093      - remove unnecessary header files
2094      - adjusted namelists
2095      - add xerbla.F to Makefile
2096    o exf:
2097      - multiple modifications of exf_check_range
2098      - unit change in exf_init_runoff from [m/year] to [m/s]
2099    o mdsio:
2100      - i/o-vector change debugLevel from debLevA to debLevB
2101    
2102    checkpoint56b_post
2103    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2104      is called from DO_THE_MODEL_IO
2105      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2106      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2107      - clean up PTRACERS_WRITE_TIMEAVE a little
2108    o add another verification experiment that tests both the cfc-pkg and
2109      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2110      reactive tendencies treated inline with regular timestepping
2111    o testreport previously did a lousy job of comparing small numbers, so
2112      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2113      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2114      testreport.
2115    o ptracers_monitor: bug fix for MPI
2116    
2117    checkpoint56a_post
2118    o GCHEM: finish reorganizating the package
2119      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2120        (introduces another 3D-array for each passive tracer, but only if
2121        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2122        gchemTendency is not needed because the timestep is done separately)
2123      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2124      - GCHEM is now---more or less cleanly---separate from PTRACERS
2125      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2126        so clear to me how that should be done in a general way.
2127    o CFC: improve formatting of output in CFC_ATMOS
2128    o PTRACERS:
2129      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2130        that ALL experiments with ptracers enable can be checked. This makes
2131        GCHEM_MONITOR obsolete.
2132      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2133        monitorFreq
2134      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2135    o add PTRACERS (PTR0[1-5]) to testreport output
2136    o exf_check_range:
2137      * default changed to .TRUE.
2138      * will check values for niter0 if debLevA, every timestep if debLevB
2139      * STOP in exf_check_range if 'out of range'
2140      * range chosen generous to allow for potential extema
2141      TBD: a version with stricter range
2142           permitted range would be runtime parameters
2143    o GMredi:
2144      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2145      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2146      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2147    o GCHEM:
2148      - move call to GCHEM_FORCING_SEP, so that it is now called before
2149        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2150      - introduced a useGCHEM runtime flag and applied it everywhere.
2151      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2152        this flag is now only visible within GCHEM-pkg routines.
2153      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2154        be replaced by a 3D array that is computed before thermodynamics; for
2155        this, the tracer ID iTracer had to be included into the parameter list
2156        of ptracers_forcing
2157      - set up forward_step to call gchem_forcing, that will replace
2158        gchem_forcing_int in ptracers_forcing
2159      - cleaning up
2160    o small cleaning of exch2: remove files that are also in eesupp/src
2161    
2162    checkpoint56
2163    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2164    o mnc: cleanup "full" files--fixes out-of-memory problem
2165    o ECCO-GODAE
2166      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2167      * fully merged and updated from SIO code
2168        windstress sign change affects
2169        - exf_inscal_[u/v]stress
2170        - sign of xx_tau[u/v] adjustments
2171        - signs in cost_scat
2172      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2173      * natl_box_adjoint updated and compressed
2174      * 2-level checkpoint switch added
2175        (tested in EXP. 1 of natl_box_adjoint)
2176      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2177    o SVD
2178      * first complete, non-hacked version for SVD calculations
2179      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2180        performed via direct access files admtlm_vector.it????
2181        (via ctrl_[un]pack)
2182      * optimcycle is used for ARPACK iteration counter
2183        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2184      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2185        and add linear transforms where necessary
2186      * controls are initial/final SST, SSS (can be extended; need to check
2187        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2188    o mdsio: filename info to both stderr, stdout
2189    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2190      from sign change
2191    
2192    checkpoint55j_post
2193    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2194      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2195    o add consistent build directories and .cvsignore files to verification
2196    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2197    o make all subroutines 30 or less characters in length for certain older
2198      compilers to work (a thorough search only turns up two routines in
2199      pkg/ptracers)
2200    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2201      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2202    
2203    checkpoint55i_post
2204    o change arrays for total vertical diffusivity (2.D if explicit,
2205      3.D if implicit) ; each ptracer uses its own background value.
2206    o added mnc/NetCDF output capability to ocn_compon_interf
2207      - added bits to verification/cpl_aim+ocn so that it can run on
2208        ITRDA and other clusters without the mpirun "-wd" option
2209    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2210      configuration
2211    o give MNC the ability to create additional files rather than
2212      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2213      - the default is just less than 2GB which is a practical limit
2214        on many systems
2215    o Compute the non-local term using either KPP vertical diffusivity (=default)
2216       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2217    
2218    checkpoint55h_post
2219    o add verification test "vermix"
2220    o remove all the *_ioinc flags and replace with the single global
2221      outputTypesInclusive flag
2222    o allow to set a vertical profile of vertical diffusivity for T & S
2223    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2224    o useMNC moved from data.mnc to data.pkg
2225    
2226    checkpoint55g_post
2227    o Renaming carbon AD experiments to comply with testreport conventions
2228    o Updating adjoint of Held-Suarez hs94.1x64x5
2229    o Fixing directives for non-ECCO forward_step, after ECCO directives
2230      have been fixed to avoid recomp. of do_oceanic_phys
2231      Works well for global_ocean.90x40x15,
2232      but recomp. issue remains for carbon
2233    o Updating adjoint output for natl_box_adjoint after
2234      pkg/ecco has been modified (see taga c55d_post)
2235    
2236    checkpoint55f_post
2237    o rename to timeave_init_fixed
2238    
2239    checkpoint55e_post
2240    o some delicate re-shuffle of store directives to avoid one
2241      extra call of do_oceanic_physics
2242      affects ecco_the_main_loop.F, do_oceanic_physics.F
2243      checkpoint_lev1_directives.h
2244    o NB: this may break global_ocean adjoint temporarily,
2245      but it is clear how to fix it. Will do later, need this now.
2246    
2247    checkpoint55d_post
2248    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2249    o ecco_cost_weights is modified to 1x1 runs
2250    o modifs to allow observations to be read in as
2251      single file or yearly files
2252    o enable to read exf forcing fields as either
2253      single file or yearly files (flag useExfYearlyFields)
2254    checkpoint55d_pre
2255    
2256    o switch between 2-level and 3-level checkpointing
2257    o add ability of MNC to write local and "partial" (eg. 2D slices where
2258      the full 3D field is never actually stored) arrays to NetCDF files
2259      with the correct (that is, the complete multi-dimensional) set of
2260      array indicies
2261      - used in mom_vecinv() to write the diagFreq output
2262      - tested (demonstrated) in verification/aim.5l_cs
2263    o further mnc-ification
2264      - add verification/lab_sea to the list with mnc setups
2265      - fix undefined mnc v-names in cd_code
2266      - add kpp to mnc output (both snapshot and timeave)
2267    o non-hydrostatic code
2268      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2269        in calc_gw.F
2270      - defaults to viscAh
2271      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2272        friction or Leith) in non-hydrostatic mode, as long as there is
2273        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2274    o pkg/cost
2275      extend simple cost functions to treat time mean quantities
2276      (T,U,V) via cost_accumulate_state from cost_tile
2277    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2278        be 2 times larger than the minimum size the advection scheme requires.
2279        now get a perfect conservation of salt in advect_cs test-exp (updated)
2280    o GGL90 (Gaspar's TKE mixed layer)
2281      - add horizontal diffusion of TKE, requires exchanges in
2282        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2283        default. In OPA there is no horizontal diffusion of TKE but the
2284        mixing coefficients are computed from a horizontal average of TKE of
2285        6 points or so. I think that diffusion has a little more physical
2286        justification.
2287      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2288        was in vain)
2289      - mask tke-variable in ggl90_init
2290    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2291    o fix biharmonic diffusion on CS-grid.
2292    o more obcs stuff
2293      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2294        for reading boundary values. This routine is called from
2295        obcs_prescribe_read
2296      - updated obcs_check
2297      - changed sponge layer relaxation parameter units for days to seconds
2298      - turned off sponge layer by default
2299      - changed argument list of OBCS_CALC to myTime+deltaTclock
2300      - fixed about 35 bugs in obcs_external_fields_load
2301    
2302    checkpoint55c_post
2303    o obcs stuff
2304      - new runtime flags useOBCSprescribe, useOBCSbalance
2305      - re-arranged obcs_calc
2306      - moved exf_getobcs to obcs_prescibe_read
2307        obcs_prescibe_read is called after ORLANSKI stuff
2308        and independent of it (executable can contain all).
2309      - updated obcs_check
2310      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2311        These may be necessary only if tangential velocities are
2312        prescribed at OB, not sure, needs testing.
2313    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2314      which simplifies the calls and passes the ifc check-bounds test
2315    
2316    checkpoint55b_post
2317    o add a 2D scalar, Z location, exchange_2 routine.
2318    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2319      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2320      affects advect_cs results (for the wrong reason): update output.txt
2321    o use a more standard discretization for biharmonic viscosity ;
2322     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2323      affects results of dome set-up: update output.txt
2324    o fix gad_advection.F (CubedSphere part), back to version 1.23
2325    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2326    
2327    checkpoint55a_post
2328    o merged code to
2329      * prescribe/read time-dependent open boundaries
2330        (works in conjunction with exf, cal)
2331      * sponge layer code for open boundaries
2332      * each boundary N/S/E/W now has its own CPP option
2333        (healthy for the adjoint)
2334    
2335    checkpoint55
2336    o up-to-date adjoint of previous breaks
2337      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2338      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2339      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2340      - carbon: * remove tr1-related adjoint verification
2341                * add ptracer as control variable
2342    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2343      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2344    
2345    checkpoint54f_post
2346    o in verification/carbin/ remove experiment related to
2347      ALLOW_PASSIVE_TRACER (array tr1 etc)
2348      code_ad/ input_ad/ results_ad
2349    
2350    o add two new packages
2351      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2352        + subject to optimization (memory)
2353      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2354        + subject to reordering (many GOTOs in the original code)
2355        + so far opps is called for every (i,j) point, and then operates in
2356          the vertical; one may want to reorder the scheme in order operate in
2357          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2358          fields)
2359    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2360      - all verification tests compile and run with linux_ia32_g77
2361      - defaults are compatible with current input files--nothing
2362        should change if you were not previously using MNC
2363      - MNC output has been added in numerous places (eg. timeave)
2364        but there are still a few writes not yet do-able with MNC
2365        (this is in progress)
2366      - flags now allow for either/or/both use of MDSIO and MNC and
2367        documentation will soon follow
2368      - numerous small formatting cleanups for ProTeX
2369    o add version info (via BUILD_INFO.h) to MNC and stdout
2370    
2371    checkpoint54e_post
2372    o add two new packages
2373      - pp81 (Packanowski and Philander, 1981), Richardson number and
2374        stratification dependent mixing
2375      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2376      - these scheme operate in a similar manner as KPP (without ghat, of
2377        course), however there is only one diffusivity that is used for both
2378        temperature and salinity (and passive tracers)
2379    o add offline package
2380    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2381      provided by Stephanie Dutkiewicz
2382    o genmake2: add ability to search for C compilers and cleanup test output
2383      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2384    
2385    checkpoint54d_post
2386    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2387    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2388      leading to additional shift by 5 days each year of integration
2389       (i.e. leading to considerable offset over the years)
2390    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2391    o start with no AB and no initial filtering (staggerTimeStep):
2392      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2393    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2394      (external loading & cpl import/export stay in forward_step.F)
2395    o update coupling interface to work with new staggerTimeStep
2396    o change MDSIO ptracers_pickup.
2397    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2398    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2399    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2400    
2401    checkpoint54c_post
2402    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2403      this affects (truncation error) output.txt of test-exp:
2404       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2405    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2406    o change Qnet to always be the net heat flux, (+upward).
2407      affects (truncation error) output of natl_box exp.: updated
2408    o define the max number of passive tracers in PTRACERS_SIZE.h
2409    o start to test mnc routinely in exp0
2410    o add sea-ice loading (sIceLoad) as a new forcing field.
2411    
2412    checkpoint54b_post
2413    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2414       impressive on Altix and Opteron systems)
2415    o diagnostics can now write NetCDF files through the mnc package
2416    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2417    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2418    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2419      affects (truncation error) output of lab_sea & natl_box exp.: updated
2420    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2421    
2422    checkpoint54a_post
2423    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2424    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2425    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2426    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2427      + internal_wave (shift in writing cg2d_ini_res)
2428    checkpoint54a_pre
2429    
2430    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2431      - modified verification/lab_sea and natl_box_adjoint accordingly
2432    
2433    checkpoint54
2434    checkpoint53g_post
2435    o prepare splitting of thermodynamics: store convect.counter in common block
2436    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2437      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2438    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2439    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2440    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2441    o restore adjointability
2442    
2443    checkpoint53f_post
2444    o modifications that affect AIM experiment results (update output.txt):
2445      - no advection of S at top interface Nr (pkg/generic_advdiff)
2446      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2447    o AIM pkg:
2448      - include stability function into surf.Flux derivative relative to Tsurf
2449      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2450    
2451    checkpoint53e_post
2452    o merged cylindrical coord configuration
2453    o added rotating_tank experiment
2454    checkpoint53e_pre
2455    
2456    checkpoint53d_post
2457    o faulks upgraded: re-generate output.txt that have changed:
2458       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2459    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2460    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2461    o added Sadourny discretization of Coriolis
2462      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2463      - re-enabled use of omega3 (useAbsVorticity)
2464    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2465      vector-invariant equations
2466      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2467    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2468      hopefully without new bugs
2469      - still to do: biharmonic friction for non-hydrostatic w
2470    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2471    o regenerated output for global_ocean_ebm (using -ieee)
2472    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2473      of mom_common/
2474      - simple re-arrangement of instructions within computing loop
2475    checkpoint53d_pre
2476    
2477    checkpoint53c_post
2478    o new version of coupler for AIM+thSIce and Ocean models
2479     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2480     - land: change Evaporation of snow
2481     - aim with thSIce: fix bug in snow-precip.
2482    o changes to calc_gw.F
2483     - bug fix for w^2 term near the bottom boundary
2484     - (hopefully) improve the lateral slip boundary condtions for use with
2485        partial/looped cells
2486      - because the bug fix changes two verification experiments anyway (exp5
2487        and plume on slope), change the lateral boundary condition from half slip
2488        to the value of no_slip_sides
2489    o ebm package wasnt quite up to the parallel task. Fixed that.
2490    o Adjoint of EBM package + verification
2491      * TLM OK
2492      * ADM not sufficient accuracy yet (needs further testing)
2493    
2494    checkpoint53b_post
2495    o Commiting new energy balance model to repository
2496      * package is pkg/ebm
2497      * verif. is verification/global_ocean_ebm
2498      * references are in ebm_driver.F
2499    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2500    C        Global thermohaline circulation. Part I:
2501    C        Sensitivity to atmospheric moisture transport.
2502    C        J. Climate 12(1), 71-82
2503    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2504    C        Global thermohaline circulation. Part II:
2505    C        Sensitivity with interactive transport.
2506    C        J. Climate 12(1), 83-91
2507    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2508    C        Destabilization of the thermohaline circulation
2509    C        by atmospheric eddy transports.
2510    C        J. Climate 7(12), 1870-1882
2511    o Will need long integration testing.
2512    checkpoint53b_pre
2513    
2514    o created pkg/mom_common in preparation for variable viscosity code
2515    o renamed and split ini_mnc_io
2516    o pkg/land: only liquid water can diffuse or run-off
2517    o AIM using land: soil wetness availability account for snow
2518    o added printMapIncludesZeros to EEPARMS namelist
2519    
2520    checkpoint53a_post
2521    o restore TAMC compatiility for exf_constants.h
2522      (no usage of _d in .h)
2523    o Additional storing in KPP in an attempt to fix
2524      TAMC problem with adjoint of KPP code.
2525      (no success...)
2526      Identical code works fine with TAF.
2527    o Fixed verification/natl_box_adjoint experiments.
2528      Initial conditions for Experiments 4 and 5 are now
2529      set to "SEAICE_initialHEFF=0", which is more reasonable,
2530      and hence gives results closer to that of Experiment 2.
2531      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2532    
2533    checkpoint53
2534    o stable checkpoint with up to date adjoint
2535      TLM tests only run for 1st grdchk at the moment. Its unclear if
2536      this is a code problem or a problem with resetting code for g_
2537      variables that is being autogenerated wrong.
2538      Otherwise:
2539       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2540       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2541         are both still in chaos following their security messes.
2542    
2543    checkpoint52n_post
2544    o various build (mostly genmake2) changes including:
2545      - ability to build/run more easily within Cygwin and MacOS X
2546      - more complicated Makefiles with a stronger dependence on Gnu Make
2547    o pkg/seaice modifications
2548      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2549        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2550        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2551      - changed proxy for geostrophic velocity and updated
2552        verification/lab_sea/results/* accordingly
2553      - removed ADI dynamic solver from pkg/seaice
2554      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2555        they caused a segmentation fault under certain circumstances
2556      - removed unused field WATR
2557    o bug fix in exf-package:
2558      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2559         now reflect that.
2560    o small fixes in the cal-package:
2561      - set reference date to first of January for the 'model'-calendar
2562      - failing of cal_CheckDate in cal_FullDate now actually results in a
2563        warning
2564    o small modifications in exf-package to increase flexibility:
2565      - change climtempfreeze from a constant to a runtime parameter that
2566        is specified in data.exf_clim (default = -1.9)
2567      - introduce runtime parameter windstressmax (default = 2.0) that is
2568        specified in data.exf
2569    o fix in pkg/thsice:
2570      - update Evap (Tsf changes) to be consistent with Latent heat flux
2571      - maintain snow precipitation unchanged (even if Tsf >=0).
2572     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2573    
2574    checkpoint52m_post
2575    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2576      this does not change any of the results, because myIter=0 in swfrac always
2577      lead to jwtype=2 (the default anyway), but the call makes little sense
2578      as a default
2579    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2580    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2581      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2582    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2583    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2584    o extending useSingleCpuIO option to work with new exch2 I/O format
2585      - old-style, missing-tile I/O is still accessible by defining CPP
2586        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2587    o monitor package can write to NetCDF files and/or STDOUT
2588    o fix re-definition bug in MNC_GRID_INIT_ALL()
2589    o doc/api_reference added
2590      - a framework for building an API Reference Manual using all
2591        the "protex" comments embedded in the code
2592      - see pkg/generic_advdiff, pkg/mnc for examples
2593    o MNC:
2594      - make myThid the last argument for all subroutines
2595      - new default for the grid files: NO halos
2596      - add useMNC and other run-time flags
2597      - separate per-file-group handling of the unlimited dimension
2598      - early initialization of MNC w/ flags read at the eeboot stage
2599        and lookup tables set in initialize_fixed
2600      - write all MNC output to a freshly-created directory
2601    o thermodynamics sea-ice (thsice) is now tested with testreport.
2602    o test exp. advect_cs: use the standard cs32 grid ; update output.
2603    o Added functionality to grdchk:
2604      pick global i,j,k position (or nearest wet) where to perform check.
2605    
2606    checkpoint52l_post
2607    o new land formulation:
2608      a) use ground enthalpy as prognostic variable to ensure exact
2609         energy conservation.
2610      b) account for water temperature and for latent heat of freezing
2611         in all processes (rain, run-off, ground storage)
2612      c) compute surface and ground temperature implicitly.
2613    o aim_v23 modification for new land model:
2614      a) Treat separately land / ocean / sea-ice surface fluxes
2615         to allow implicit computation of land & sea-ice surface temp.
2616      b) add snow precipitation.
2617    checkpoint52l_pre
2618    
2619    o fix problem (when 1 tile is empty) in min/max monitor.
2620    o fix bug in timeAve (u,vZetatave in common block)
2621    o no restoring terms under ice for pkg/seaice
2622    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2623    o bug fix for pkg/seaice pickups
2624    o change MNC call locations and add coordinate attributes
2625    o mask vorticity at the corner ; affects global_ocean.cs output
2626    o fix ini_curvilinear_grid ; test CS experiments with mpi
2627    o aim.5l_cs: modify sea-ice fraction input file ; update output
2628    o exf: Adding simple range check routine for exf fields after read
2629    
2630    checkpoint52k_post
2631    o removed top-level directory "diags"
2632      - we migrated these functions to pkg/timeave a long time ago
2633    o fixed bug introduced in pkg/monitor
2634    o accuracy ctrlprec = 32 insuffient for gradient checks using
2635      averaged fields (I/O via cost_averages)
2636      -> use ctrl.h in active_file*.F to control I/O precision.
2637    o paramter list of CALL ADTHE_MAIN_LOOP
2638    o added initial do_the_model_io to ecco
2639    o set all ...Freq to zero after cost_final
2640      taveFreq, dumpFreq, pChkptFreq
2641    o MAIN and ECCO differentiability restored
2642    
2643    checkpoint52j_post
2644    o fix nchklev in tamc.h for global_ocean...
2645    o Bringing flow and store directives up-to-date
2646    o Really weird thing!
2647      call do_the_model_io from the_main_loop with parameters
2648      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2649      TAF places a faulty re-call of initialise_varia
2650      after cost_final call which should not be there!
2651    checkpoint52j_pre
2652    
2653    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2654      error messages
2655    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2656    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2657      debug output
2658    o modfied mdsio_writefield.F to handle non-global files under exch2
2659    o update AIM Cubed-Sphere exp (aim.5l_cs):
2660      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2661    o update AIM Equatorial Channel exp:
2662      use standard aim_v23 pkg and change the SST fields to be more realistic.
2663    o globalFile now works with exch2
2664    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2665      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2666    o limit timeave output for hi-res integrations
2667    
2668    checkpoint52i_post
2669    o removed CPP_EEOPTIONS.h from verification/*/code
2670    o updated the tiling for global_ocean_pressure
2671    checkpoint52i_pre
2672    
2673    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2674      the old pkg/aim).
2675    
2676    checkpoint52h_pre
2677    o shortened offending lines in exch2_send_rx?.template
2678    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2679    o genmake2: add build & execute test for NetCDF code
2680    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2681      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2682    o added useSingleCPUIO flag to monitor.F and mon_out.F
2683    o added temporary hack for sea-ice dynamics on the cube:
2684      metric terms are ignored and it is assumed that
2685      there is no sea-ice on cube faces 1, 2, 4, and 5.
2686    
2687    checkpoint52f_post
2688    o added exch2 cube routines to pkg/exch2
2689    o modified hs94.cs-32x32x5 to use it
2690    o added new grid files to hs94.cs-32x32x5
2691    checkpoint52f_pre
2692    
2693    checkpoint52e_post
2694    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2695      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2696    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2697      to work with implicit vertical advection and AB ;
2698    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2699    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2700     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2701    checkpoint52e_pre
2702    
2703    o fix bug in impldiff when Nr=1 or Nr=2.
2704    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2705    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2706    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2707      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2708    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2709    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2710    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2711    
2712    checkpoint52d_post
2713    o re-tiled many expts to allow comparison in multi-processor mode
2714      - updated output accordingly
2715      - changed hs94.128x64x5 to use intial T from file rather than use the
2716        random number generator
2717    o add infrastructure in model routines for fizhi and gridalt packages
2718    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2719    o changes to permit hi-res, cubed-sphere, configuration
2720      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2721      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2722      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2723        of surface winds for the cube
2724      (A verification experiment, based on global_ocean.cs32x15, but with
2725       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2726       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2727       complete with example surface forcing files and matlab scripts to look
2728       at the output and compare it with that of global_ocean.cs32x15.)
2729    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2730       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2731       to conform to the common rule.
2732    o check-in the first version of the coupler + interfaces for multi-components
2733       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2734       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2735       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2736       - ocean and atmos. share the same horizontal grid (no interpolation).
2737       - exchanges between component and coupler is done in forward_step
2738    o new verification experiment, cpl_aim+ocn:
2739       coupled ocean - AIM atmosphere on cs32 grid.
2740    
2741    checkpoint52d_pre
2742    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2743    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2744    
2745    checkpoint52c_post
2746    o Fixing OPTIONS files for use of exf:
2747      - ALLOW_ECCO not needed
2748      - ECCO_CPPOPTIONS.h should not be included from
2749        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2750        as has been the case in the past
2751      - All cal/exf related options are currently set in
2752        single header file. Should remain so until we
2753        agree on a consistent new policy.
2754    o Removed all CPP options for cal package.
2755      cal has no more CPP options.
2756    o modified STOREs in GAD_ADVECTION
2757    o corrected key comp. for passkey
2758    
2759    checkpoint52b_post
2760    o new version: "thsice" of thermodynamic sea-ice pkg:
2761     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2762     - modify fluxes but do not change theta directly;
2763     - light cleaning of bulk_force pkg (still needed with thsice).
2764     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2765       + output_thsice.txt to test thsice & bulk_force pkgs.
2766    o put back grid & coriolis monitor output.
2767    checkpoint52b_pre
2768    
2769    o call "do_the_model_io" at the beginning (=> dump initial state)
2770    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2771    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2772      (need info on NUMBER_OF_PTRACERS)
2773    o missing PTRACERS headers in some routines
2774    o default tamc.h in pkg/autodiff supposed to crash
2775      to ensure proper customization
2776    
2777    checkpoint52a_post
2778    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2779      - moved surfaceTendencyTice from pkg/seaice to main code
2780      - subroutine FREEZE_SURFACE now limits only surface temperature
2781        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2782        => new output.txt for global_ocean.cs32x15 & global_with_exf
2783      - keep the old version of FREEZE for backward compatibility;
2784        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2785      - corresponding modifs for TAF directives
2786    o added surface flux output variables to TIMEAVE_STATVARS
2787    o time-averaged output for pkg/ptracers
2788    o fix problem with ECCO-related divided adjoint
2789      snapshot file was missing some ad-variables,
2790      but no warning issued by TAF
2791    
2792    checkpoint52a_pre
2793    o some bug fixes for #undef REAL4_IS_SLOW
2794    
2795    checkpoint52 = ecco_c52_e35
2796    o after testing adjoints of checkpoint51u_post
2797    
2798    checkpoint51u_post
2799    o this is the post-merge tag of the ecco-branch
2800      (needs another clean checkout and re-testing)
2801    o various natl_box_adjoint configs and results
2802      but no input fields
2803    o obcs adjoint not yet merged!
2804    o adding ECCO global 1x1 and 2x2 degree configs
2805    o updated/extended some store directives for seaice
2806    o pkg/ecco now containes ecco-specific part of cost function
2807    o top level routines the_main_loop, forward_step
2808      supersede those in model/src/
2809      previous input data.cost now in data.ecco
2810      (new namelist ecco_cost_nml)
2811    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2812    
2813    checkpoint51t_post
2814    o this is the pre-merge tag of the ecco-branch
2815    
2816    checkpoint51s_post
2817    o cleanup: removed various obsolete #define-s
2818    o pkg/grdchk
2819      - renamed 'ph-grd 3' to 'grad-res'
2820      - merged from ecco-branch
2821        (remaining bug fixes for obcs gradient checks)
2822      - additional high-precision output for testreport
2823        (grep for 'precision_grdchk_result')
2824    
2825    checkpoint51r_post
2826    o cleaned up or removed CPP_OPTIONS.h files
2827    o updated results for some of the tests to reflect the new
2828      optfiles (-ieee: -O0 instead of -O3)
2829    
2830    checkpoint51q_post
2831    o cd_code:
2832      - moved cd_scheme.F -> cd_code_scheme.F
2833      - separate read_checkpoint from cd_code_ini_vars.F
2834      - separated cd_code part from write_checkpoint
2835      - updated AD_SOURCE, generated .flow
2836      - added CD_CODE_VARS.h to the_main_loop
2837      - Moving cd_code specific store dir.s to pkg/cd_code
2838    o ctrl package totally restructured
2839      - pack/unpack now optional and decoupled from
2840        xx_/adxx_ I/O
2841      - ctrl_pack/unpack cleaned
2842        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2843      - confined inclusion of AD_CONFIG.h to where necessary.
2844    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2845    
2846    checkpoint51p_post
2847    o create initial cd_code package
2848      - WARNING: the initialization of fields within packages
2849        is broken because INI_FIELDS (where READ_CHECKPOINT is
2850        called) is called *before* PACKAGES_INIT_VARIABLES.
2851        This seems to be backwards since
2852        1) its important to initially zero the entire field including
2853           the "halo" region
2854        2) zeroing needs to be done *before* reading pickup info
2855           and the pickup call might or might not happen in any
2856           particular run
2857      - this needs an overhaul for R2
2858    o cleanup verification/*/code/GMREDI_OPTIONS.h
2859    o cleanup testreport
2860    
2861    checkpoint51o_post
2862    o bringing AD-related verif's up to date with genmake2
2863      - carbon/
2864      - global_ocean.90x40x15/
2865      - hs.94.1x64x5/
2866      - (front_relax/ )
2867    o (more) consistent directory structure for AD-related verif.'s
2868    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2869    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2870    o bug fix in find_alpha.F for MDJWF:
2871      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2872        change rho -> rho-rhoConst
2873      - replace call find_rho to find_rhonum
2874    o initialisation of rFlx extended to full array (required by TAF)
2875      and shifted to thermodynamics
2876    o removed PTRACERS.h in ptracers routine
2877    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2878    o Correcting initialisations for fVerU, fVerV.
2879    o helping TAF to recognize dependency on kUp for
2880      fVerU, fVerV
2881    o Replacing delZ by delR in pkg/ctrl/
2882    checkpoint51o_pre
2883    
2884    o undid all of cp51 pending some cleanups and discussion
2885    o added the [#include "AD_CONFIG.h"] statement to all files that need
2886       it for adjoint/tl #defines
2887     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2888     o removed tools/genmake since it no longer works
2889    
2890    checkpoint51n_post
2891    o modifications to make FREEZE flux visible to pkg/kpp
2892      - moved surfaceTendencyTice from pkg/seaice to main code
2893      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2894      - subroutine FREEZE now limits only surface temperature
2895        (this means new output.txt for global_ocean.90x40x15,
2896         global_ocean.cs32x15, and global_with_exf)
2897    o added surface flux output variables to TIMEAVE_STATVARS
2898    
2899    checkpoint51n_pre
2900    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2901    o added [#include "AD_CONFIG.h"] to all files that use the following
2902      defines:
2903      - ALLOW_ADJOINT_RUN
2904      - ALLOW_TANGENTLINEAR_RUN
2905      - ALLOW_ECCO_OPTIMIZATION
2906    
2907    checkpoint51m_post
2908    o incorporating changes to get TAMC/TAF working in genmake2
2909      - added new TAMC/TAF targets to the Makefile
2910      - various cleanups related to package handling
2911      - these changes should have no impact on the forward model
2912    
2913    checkpoint51l_post
2914    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2915     - faster algorithm for cal_addtime.F
2916     - higher precision arithmetic, where needed
2917     - pkg/exf *startdate variables changed from calendar date to
2918       model integration time
2919    
2920    checkpoint51l_pre
2921    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2922    o enable to apply restoring on S & T only in a latitude band.
2923    o update output (external_forcing_surf modif. change truncation errors)
2924       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2925    
2926    checkpoint51k_post
2927    o change default to: useNHMTerms=.FALSE.
2928     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2929       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2930     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2931        exp1, ideal_2D_oce
2932     - change data file of oceanic exp (leave the results unchanged for now)
2933       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2934    o set gravitySign automatically according to the vertical coordinate used
2935      (and change sign: back to "logical" value: +1 when R increases downward)
2936    o added an include barrier to the default CPP_OPTIONS.h and
2937      removed the #include "PACKAGES_CONFIG.h" from it
2938    o fix a bug in mom_fluxform (from chk51j_post)
2939    
2940    checkpoint51j_post
2941    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2942    o adjusted some flow directives (dynamics, thermodynamics)
2943    o added cubed-sphere case to test cost function
2944    o heckpoint_lev?_directives.h now include
2945      pkg-specific directives, whenever those are enabled.
2946    o Moving pkg-specific flow directives to corresponding pkg
2947      Moving pkg-specific differentiation list to corresponding pkg
2948      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2949      ---> conventions are
2950           - pkg_ad.flow
2951           - pkg_ad_diff.list
2952           - pkg_ad_check_lev?_dir.h
2953    
2954    checkpoint51i_post
2955    o merge of the branch-genmake2
2956      - knowingly breaks the older genmake
2957      - automatic generation of all ALLOW_${PKG_NAME} defines
2958      - new testreport supersedes older testscript
2959    o large number of package inclusion and header cleanups
2960    checkpoint51i_pre
2961    
2962    o new output for adjoin of global ocean vector invariant
2963    o fix for checkpoint of thermodynamic seaice and bulk_force
2964    o Steph gchem various cleanups
2965    
2966    checkpoint 51h_pre
2967    o fixed some single quotes
2968    o modify gchem pkg to be more versatile
2969    o modifications to clean up dic pkg
2970    o add pkg/cfc
2971    
2972    checkpoint51g_post
2973    o provide links for ARPACK and ADM*TLM
2974    o start removing verification/vero/
2975    o update AD-related stuff
2976      (in particular some IF-statements in model/src/ routines)
2977    o adding to verification/global_ocean.90x40x15/ adjoint of
2978      vector invariant setup
2979    
2980    checkpoint51f_post
2981    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2982    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2983      of tracer Green's fucntions for ocean inversion project.
2984    
2985    checkpoint51f_pre
2986    o Added on-the-fly spatial interpolation capability
2987        "USE_EXF_INTERPOLATION" to pkg/exf.
2988      - This is a temporary Cartesian-grid hack until
2989        the super-duper ESMF coupler becomes available.
2990      - See verification/global_with_exf/README for usage example.
2991      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2992        flags and modified pkg/seaice accordingly.
2993    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2994        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2995        non-local transport term.
2996    
2997    checkpoint51e_post
2998    o pkg/mom_vecinv:
2999      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
3000      - add time-ave diagnostic of vorticity advection.
3001    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
3002    o atmospheric geopotential: - include water vapor effect;
3003                                - use p^kappa in p* scaling.
3004    o land pkg: read initial state from files.
3005    o AIM : add stratospheric drag in the upper level
3006    
3007    checkpoint51d_post
3008    o change function ILNBLNK (=> last non-blank char.) to return zero
3009      (instead of the string length) when the string. char is empty
3010    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
3011    o modif's to restore TAMC compatibility
3012      - avoid "_d" constructs in PARAMETER declarations
3013      - avoid interrupting lines by comment lines
3014    o Use cluster local disks for purely local I/O
3015      vs. globally visible disks needed for ctrl stuff
3016      (merged from ecco-branch)
3017      - new active_file_loc... and mdsio_..._loc routines
3018      - affected packages: autodiff, ctrl, grdchk, mdsio
3019    
3020    checkpoint51c_post
3021    o introducing integer flag debugLevel
3022      - debLevZero: suppress all output
3023      - debLevA: standard
3024      - debLevB: equivalent to current debugMode=.TRUE.
3025    o introducing pathname variable mdsioLocalDir for mdsio
3026      that can be specified at runtime
3027      (relevant for cluster I/O to local disk)
3028    `
3029    >>>checkpoint51b_post
3030    adjoint of ptracers
3031    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
3032    o extended state in checkpoint_lev?, etc.
3033    o alternative ctrl/cost with tr1 or ptracer
3034    o new comlev1_bibj_ptracers
3035    o new ptracers.flow
3036    o made ptracers_forcing same as external_forcing_s
3037    o added verification for adjoint with ptracers
3038      - adm. grdchk fail so far
3039      - tlm. grdchk OK
3040      - checked tapelev/comlev recomputations: OK
3041    <<<checkpoint51b_pre
3042    
3043    checkpoint51a_post
3044    o added code for biogeochemistry package
3045      - new pkgs: dic, gchem
3046      - new subroutine in ptracers
3047    o modify code for biogeo packages
3048      - in model/src and pkg/ptracers
3049    
3050    checkpoint51
3051    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
3052      - autodiff, ctrl, exf, grdchk, seaice
3053      kept separate packages
3054      - cost, ecco, obcs
3055    o updating verification/internal_wave, verification/lab_sea
3056      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
3057    
3058    checkpoint50i_post
3059    o Preparing next differentiable checkpoint and sync
3060      of MAIN vs. ecco-branch
3061      - 1st step: this one is differentiable
3062      - 2nd step: next(! not this) checkpoint will have updated packages
3063                  from ecco-branch)
3064    
3065    checkpoint50h_post
3066    o new package "land": provide surface BC for AIM.
3067    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
3068    o AIM: use true log-P extrapolation for near surface temp (= as in
3069        F.Molteni paper) ; update aim.5l_cs output.
3070    o New variable in PARM03 for more flexible pickups
3071    o somewhat cleaned package initialisation sequence for
3072      ctrl/ cost/ ecco/ in packages_... routines
3073    
3074    checkpoint50g_post
3075    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
3076      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
3077      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
3078        made the default because of faster convergence than ADI
3079    
3080    checkpoint50f_post
3081    o exf totally restructured
3082      - replaced all exf_set_ routines by one generic exf_set_gen.F
3083        and made sure it's still differentiable
3084      - split exf_getffields.F into new exf_bulkformulae.F
3085      - exf_inscal_/exf_outscal_ suffixes consistent with field names
3086      - updated adjoint/makefile and relevant verif. accordingly
3087    
3088    checkpoint50f_pre
3089     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
3090          + change Evap over land. (update aim.5l_cs output)
3091     o added missing .cvsignores and made uniform across expts
3092     o changed configuration of tidal_basin_2d expt
3093     o added pkg/debug functions for tracing code in fatal crashes
3094     o tidied pkg/monitor to use MONITOR_OPTIONS.h
3095     o new fn in pkg/monitor to stop model if solution grows too big
3096     o removed lots of single quotes from comments
3097    
3098    checkpoint50e_post
3099    o make KPP work with PTRACERS
3100     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
3101       nearly a copy of kpp_transport_s
3102     - there is no analogue to SurfaceTendencyS, so I have to use
3103       gPtr(of the surface layer) instead
3104    o add a new platform SunFire+mpi (SunFire 15000) to genmake
3105    checkpoint50e_pre
3106    
3107    checkpoint50d_post
3108    o change kpp output from multiple-record state files to single-record state
3109      files analogous to write_state.F
3110    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
3111      analogous to the cg2d-related output.
3112    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
3113      so that writing to internal file fn (with length 512) fails.
3114    checkpoint50d_pre
3115    
3116    checkpoint50c_post
3117    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
3118    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
3119    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
3120    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
3121    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
3122    
3123    checkpoint50c_pre
3124    Merging from release1_p13:
3125    o bug fix for pkg/seaice dynamic solver
3126    o Added SEAICE_initialHEFF to pkg/seaice
3127    
3128    checkpoint50b_post
3129    o store u*,v* in gU,V instead of in guNm1,gvNm1
3130    o in order to put the momForcing out of the Adams-Bashforth:
3131      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
3132      to timestep.F
3133    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
3134    o re-generate output for highly sensitive test-exp:
3135       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
3136    
3137    checkpoint50b_pre
3138    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
3139    o corrected CPP option mismatch in exf_Bulk... functions for case
3140      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
3141    
3142    checkpoint50a_post
3143    o Bug fix for merging between c50 and KPP.
3144      ikey was passed from thermodynamics to kpp_calc via
3145      common block rather than being recomputed in kpp_calc,
3146      in contradiction with new key itdkey.
3147      New key ikppkey created, and tamc.h headers updated.
3148    
3149    checkpoint50
3150    - 2nd step of merge with ecco-branch:
3151      merge changes in ecco-branch back into main trunk
3152    - bug fix in find_alpha
3153    - more storing in gmredi_calc_tensor.F, kpp_routines.F
3154    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
3155    - merged some sliced AD support routines
3156    
3157    checkpoint49
3158    merged from ecco-branch:
3159    o exf:
3160      - Enable initialisation of forcing fields to constant
3161        (runtime) values.
3162      - in exf_getffields.F
3163        Reduce i-/j-loop to interior domain, discarding overlaps.
3164        That also fixes wrong TAF-key computations for key_1, key_2
3165        with bulf formulae.
3166      - exf_init.F modify #ifdef for exf_init_evap
3167      - exf_getffieldrec.F, ctrl_getrec.F
3168        The following INT-usages are not safe:
3169          fldsecs  = int(fldsecs/fldperiod)*fldperiod
3170          fldcount = int(fldsecs/fldperiod) + 1
3171        and were modified.
3172    o autodiff: checkpoint_lev...
3173      - updated storing for bulk formulae (some arrays were missing)
3174      - added state for seaice package
3175      - synchronized with main branch
3176    o DIVA:
3177      Modif.s in
3178      - the_main_loop.F
3179      - the_model_main.F
3180      and added cost_final_restore.F cost_final_store.F
3181      o With these changes, it is possible to fully separate
3182        the first forward run to compute the cost function (mdthe_main_loop)
3183        and adjoint runs over individual DIVA intervals (adthe_main_loop)
3184        into separate model executions.
3185        This enables better tuning of DIVA to given queue sizes.
3186      o Loss of cost function value in consecutive DIVA runs is
3187        fixed by storing to 'costfinal' file.
3188      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
3189        beginning/end of adjoint integration is accounted for.
3190      The current changes apply to TAF-1.4.26.
3191      TAF has one remaining bug, requiring one manual change
3192      (see MITgcm manual).
3193    o cal: synchronized between MAIN and ecco-branch
3194    
3195    checkpoint48i_post
3196    o Changes to restore differentiability of code w.r.t. previous tag
3197      (mostly adding new routines to make list and replacing
3198      pressure by totPhiHyd).
3199    o Updated and merged grdchk package
3200      - has both ADM and TLM checks
3201      - works for single- and multi-proc.
3202      - output cleaned
3203      - worked successfully for parallel DIVA
3204    o genmake:
3205      - Adding -platform=SP4
3206      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
3207    o Modif. for DIVA:
3208      ctrl_unpack should not be called in intermediate DIVA interval.
3209      (similar thing would apply for active files such as
3210      tbar, sbar, psbar, which should not be reinitialised;
3211      only relevant for ecco-branch)
3212    
3213    checkpoint48h_post
3214    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
3215    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
3216    o Added SEAICE_initialHEFF to pkg/seaice
3217    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
3218    
3219    checkpoint48g_post
3220    --- EOS:
3221    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
3222      store total Potential in totPhyHyd for diagnostics & EOS.
3223    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
3224    --- Pressure/geopotential gradient:
3225    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
3226    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
3227      ( changes results of global_ocean_pressure )
3228    o NLFS + z-coord.: add eta*Rho' contribution.
3229    o accurate phiHyd when using interface-W at the middle between 2 centers
3230     ( changes results of ideal_2D_oce )
3231    o includes r* 2nd term in potential gradient.
3232    
3233    checkpoint48f_post
3234    Merging from release1_p12:
3235    o Modifications for using pkg/exf with pkg/seaice
3236      - improved description of the various forcing configurations
3237      - added basic radiation bulk formulae to pkg/exf
3238      - units/sign fix for evap computation in exf_getffields.F
3239      - updated verification/global_with_exf/results/output.txt
3240    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
3241      (SBO) core products, including oceanic mass, center-of-mass,
3242      angular, and bottom pressure (see pkg/sbo/README.sbo).
3243    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
3244      to avoid negative values in shallow regions.
3245      - updated verification/natl_box/results/output.txt
3246      - updated verification/lab_sea/results/output.txt
3247    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
3248    o Added useSingleCpuIO option (see PARAMS.h).
3249    o Updated useSingleCpuIO option in mdsio_writefield.F to
3250      work with multi-field files, e.g., for single-file pickup.
3251    o pkg/seaice:
3252      - bug fix in growth.F: QNET for no shortwave case
3253      - added HeffFile for specifying initial sea-ice thickness
3254      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
3255    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
3256      kpp_transport_t.F, forward_step.F, and the_main_loop.F
3257    o pkg/seaice:
3258      - adjoint-friendly modifications
3259      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
3260    
3261    checkpoint48e_post
3262    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
3263    o dynamics: change definition of computational domain & adapt mom_fluxform
3264      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
3265    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
3266        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
3267        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
3268        global_ocean.90x40x15 global_with_exf global_ocean_pressure
3269        inverted_barometer solid-body.cs-32x32x1
3270      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
3271    
3272    checkpoint48d_post
3273    o in preparation for r*:
3274     a) use pre-computed gradient of hydrostatic potential:
3275        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
3276     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
3277        => affects results of glob_oce_pressure (different truncation error)  
3278      update output.txt of ideal_2D_oce & global_ocean_pressure
3279    
3280    checkpoint48d_pre
3281    o in preparation for r*:
3282      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
3283      pass the 2 comp. of the grad. as arguments to momentum S/R.
3284      but for the moment, only used if it does not change the results.
3285    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
3286    
3287    checkpoint48c_post
3288    Modifications in treatment of initial flux forcing controls
3289    to avoid extra storing of flux fields.
3290    
3291    checkpoint48c_pre
3292    o Added tidal_basin_2d experiment (currently 1D!)
3293    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3294    
3295    checkpoint48b_post
3296    o r* coordinate added in #ifdef NONLIN_FRSURF block.
3297     (modification to pressure gradient not yet implemented)
3298    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
3299      (for U & V) that are used for vertical advection of momentum.
3300    
3301    checkpoint48a_post
3302    o In preparation for r*, use temp. array to compute vertical transport
3303       in flux-form momentum pkg. => change results of few test-exp.
3304      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
3305                        lab_sea, natl_box & plume_on_slope
3306    
3307    checkpoint48
3308    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
3309    
3310    checkpoint47j_post
3311    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
3312    o moved adexch from forward_step to addummy_in_stepping
3313    o added exch in ctrl_map_...
3314    o aveFreq.=0. at end of cost_final to avoid overwrite in
3315      reverse checkpointing loop
3316    o Yet more changes in gmredi:
3317      * adgmredi_calc_tensor
3318        avoiding all recomputation of gmredi_slope_limit
3319      * adgmredi_x/y/rtransport
3320        added flag for excessive storing to avoid recomp. of
3321        u/v/rtans, dTdx/y/z
3322        -> this is not really necessary and very memory-consuming
3323      * adgmredi_slope_psi:
3324        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
3325      * gmredi_slope_limit
3326        re-activated full calculation of taperfct for case 'ac02'
3327    o updating verification/ adjoints of carbon, global_ocean.90x40x15
3328    
3329    checkpoint47i_post
3330    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
3331    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
3332      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
3333    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
3334    o gmredi: fix few bugs.
3335    
3336    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
3337    This will be a good checkpoint to plug into the ecco-branch.
3338    o few modif.'s to get latest version adjointed
3339      (mainly kick out code in ini_linear_phisurf)
3340    o modif's to run adjoint with exactConserv
3341    o case GM_BOLUS_ADVEC should be cleaned
3342      S/R gmredi_slope_psi should be cleaned
3343    o verification/carbon now has exactConserv=.TRUE.
3344    
3345    checkpoint47g_post
3346    o time-average AIM output: becomes independent from statvars time-average
3347      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
3348    o After TAF bug fix:
3349      Tested adjoint of gmredi package.
3350      Tests were done with checkpoint47 rather than with latest
3351      checkpoint47f_post since the latter is broken for the adjoint
3352      verification/carbon/ contains both ADM and TLM gradient checks.
3353    Here they are, before they get changed/lost/stolen.
3354    Mostly modif.'s to fix numerical sensitivities.
3355    Gradient checks OK for
3356    - GM_taper_scheme:
3357      * clipping
3358      * ac02
3359      * linear
3360      * glw91
3361      * dm95
3362      * ldd97
3363    - GMREDI_OPTIONS:
3364      * GM_VISBECK_VARIABLE_K
3365      * GM_NON_UNITY_DIAGONAL
3366      * GM_EXTRA_DIAGONAL
3367      * GM_BOLUS_ADVEC
3368    in conjunction with data.gmredi parameters to be checked in
3369    in a few minutes under verification/carbon/code/
3370    
3371    checkpoint47f_post
3372    Merging from release1_p10:
3373    o modifications for using pkg/exf with pkg/seaice
3374      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
3375        and SEAICE_EXTERNAL_FLUXES
3376      - pkg/exf CPP options EXF_READ_EVAP and
3377        EXF_NO_BULK_COMPUTATIONS
3378      - usage examples are Experiments 8 and 9 in
3379        verification/lab_sea/README
3380      - verification/lab_sea default experiment now uses
3381        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
3382    
3383    checkpoint47e_post
3384    o created a tag prior to creating a branch
3385    
3386    checkpoint47d_post
3387    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
3388      at the bottom boundary had an erroneous half slip boundary condition
3389    o added bottom drag and no slip boundary condition capabilities to
3390      oceanic pressure coordinates code
3391    o added new verification experiment global_ocean_pressure, this experiment is
3392      also described in the tutorial section of the manual
3393    checkpoint47d_pre
3394    
3395    checkpoint47c_post
3396    o Added a verification experiment for a global cubed-sphere ocean run
3397      -  verification/global_ocean.cubed32x32x30
3398      -  uses pkg/therm_seaice and pkg/bulk_forcing
3399    
3400    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
3401    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
3402      when using P-coordinate; only implemented for atmospheric config.
3403    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
3404      NOTES: requires option NONLIN_FRSURF to be "#define".
3405    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3406    
3407    checkpoint47b_post
3408    Merging from release1_p9:
3409    o pkg/seaice
3410      - removed GOTO's and added taf directives
3411      - double precision constants to reduce the g77 (Linux)
3412        to F77 (SGI) differences reported in release1_p8
3413    o tools/genmake
3414      - added SGI options
3415    o verification/testscript
3416      - updated to that of checkpoint47a_post
3417    o verification/global_ocean.90x40x15/input/eedata
3418      - modified for SGI f77 compatibility
3419    o verification/lab_sea
3420      - added description of sea-ice model
3421      - added missing matlab routines
3422      - added test of thermodynamics parallelization
3423    
3424    checkpoint47a_post
3425    o new pkg: aim_v23
3426     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3427       for now, keep the same surface forcing as before.
3428     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3429     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3430     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3431    o add diagnostic of surface correction term in monitor output
3432    
3433    o bulk_force and therm_seaice
3434    - Two packages:  bulk_force (Bulk forcing)
3435      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3436    - Earlier integration from Stephaine Dutkiewicz
3437      and Patrick Heimbach.
3438    - Two ifdef statements for compile time,
3439       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3440    
3441    checkpoint47
3442    differentiable version of checkpoint46n_post
3443    o bug fix in quasihydrostaticterms
3444    o * "clean" adjoint code (in terms of extensive recomputations)
3445        can now be obtained for all GMREDI options (i.e. for
3446        - GM_VISBECK_VARIABLE_K
3447        - GM_NON_UNITY_DIAGONAL
3448        - GM_EXTRA_DIAGONAL
3449        - GM_BOLUS_ADVEC )
3450      * However, wrong gradient check problem remains unsolved.
3451      * New CPP options have been introduced for different
3452        tapering schemes
3453    o external_fields_load now part of differentiation list
3454    o pressure needs multiple storing;
3455      would be nice to have store_pressure at beginning or
3456      end of forward_step, e.g. by having phiHyd global (5-dim.)
3457      (NB: pressure is needed for certain cases in find_rho,
3458      which is also invoked through convective_adjustment).
3459    o recomputations in find_rho for cases
3460     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3461    o #define ATMOSPHERIC_LOADING should be differentiable
3462    o ini_forcing shifted to begining of initialise_varia
3463    o Incorporating QNVS line search routines into MITgcm
3464      (this is separate code, and therefore not under pkg)
3465      lsopt/, optim/
3466    o Updated verification/carbon/
3467      - #define GM_VISBECK_VARIABLE_K
3468      - GM_taper_scheme    = 'ldd97'    
3469    
3470    checkpoint46n_post
3471    Merging from release1_p8:
3472    o verification/natl_box:
3473      updating new external_fields_load routine
3474    o New package: pkg/seaice
3475      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3476      The sea-ice code is based on Hibler (1979-1980).
3477      Two sea-ice dynamic solvers, ADI and LSR, are included.
3478      In addition to computing prognostic sea-ice variables and diagnosing
3479      the forcing/external data fields that drive the ocean model,
3480      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3481      The implied surface heat flux is then stored in variable
3482      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3483      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3484      non-local transport term.  Because this call precedes model
3485      thermodynamics, temperature under sea-ice may not be "exactly" at
3486      the freezing point by the time theta is dumped or time-averaged.
3487      N.B.: fairly large differences in accuracy occur across
3488            different platforms/compilers; comparison between
3489            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3490            generated output gives:
3491       T           S           U           V
3492      C D M    c        m  s        m  s        m  s        m  s
3493      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3494      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3495      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3496    
3497      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3498    o GAD:
3499      - generated new common blocks to account for call of
3500        same gad routines with differing traceridentities
3501        (needed to modify tracerIdentity indices in GAD.h)
3502      - generated separate common blocks for case useCubedSphereExchange
3503        (Department of Futurology)
3504      - parameter lists to gmredi_?transport: added tracerIdentity
3505      - added new key indices to tamc.h
3506    o external_fields_load:
3507      - added this routine to TAF list
3508      - needed to make some common blocks global and additional storing
3509        along the same lines as exf package (checkpoint_lev?_directives.h)
3510    o exf:
3511      updated external forcing package
3512      - bug fixes carried over from ecco-branch
3513        (missing OBCS_OPTIONS.h in two routines)
3514      - enable easy to use "no forcing".
3515      - added exf I/O for atmospheric loading
3516      - added exf I/O for runoff data
3517      - transfered scaling between exf <-> MITgcm to exf namelist
3518    o Adding new verification experiment global_with_exf.
3519      This verification experiment is almost identical to the
3520      global_ocean.90x40x15 experiment, except that it uses
3521      the exf (and cal) package instead of the
3522      external_fields_load routine (cf README file).
3523    
3524    checkpoint46m_post
3525    o modified testscript to return -- when there are no lines of "%MON" output
3526    o added new flag "quasiHydrostatic" for QH mode
3527      and new routine quasihydrostaticterms()
3528    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3529      New routine: mom_u_coriolis_nh()
3530    o fixed sign of non-hydrostatic metric terms in u and v equations.
3531      Depend on correct sign of gravitySign.
3532    o added work.pc* to .cvsignore in aim directories using ifc
3533    o introduced flag for controllin non-hydrostatic metric terms
3534    o removed gravitySign from PARM04
3535    o switched to g77/ifc from pgf77 in aim experiments
3536    
3537    checkpoint46l_post
3538    o made convective adjustment work with pressure coordinates:
3539     - changed the direction of k-loop in convective_adjustment.F for the
3540       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3541     - adjusted the reference pressure k-index in convective_adjustment.F
3542     - adjusted the convection condition in convect.F (in analogy to
3543       calc_ivdc.F)
3544     - convective_adjustment no longer computes anything on the halos
3545     - removed the warnings about negative salinity from find_rho.F and
3546       find_alpha.F; instead the new routine look_for_neg_salinity, called
3547       at the beginning of find_rho, find_alpha, and find_beta, does a
3548       check of the entire slice, if CPP-option
3549       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3550    checkpoint46l_pre
3551    
3552    checkpoint46k_post
3553    o fixed the verification/global_ocean.90x40x15 experiment:
3554     - new bathymetry (the world according to A., JMC, and M.)
3555     - new initial fields and forcing fields (*.bin files)
3556     - new POLY3.COEFFS (for the next release one should switch to a full
3557       equation of state: JMD95P or MDJWF)
3558     - fixed several errors and redundancies in the data file
3559     - experiment uses looped cells
3560     - added matlab directory with diagnostic scripts for plotting of output
3561    
3562    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3563     - read AIM physics parameters from a file (data.aimphys)
3564     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3565    
3566    checkpoint46j_post
3567    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3568    o move wVel computation at the end of the time step, in S/R integr_continuity
3569    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3570    o update timeave pkg for wVel diagnostic.
3571    checkpoint46j_pre
3572    
3573    checkpoint46i_post
3574    o Clean up AIM package (and keep the results unchanged):
3575      include CPP_OPTION and use IMPLICT NONE in all routines ;
3576      declare all the variables _RL ; use _d 0 for all numerical constants.
3577      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3578    
3579    checkpoint46h_post
3580    o cleaned up the use of rhoNil and rhoConst.
3581      - rhoNil should only appear in the LINEAR equation of state, everywhere
3582        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3583        and the dynamical equations are all divided by rhoConst
3584    o introduced new parameter rhoConstFresh, a reference density of fresh
3585      water, to remove the fresh water flux's dependence on rhoNil. The default
3586      value is 999.8 kg/m^3
3587    o cleanup up external_forcing.F and external_forcing_surf.F
3588      - can now be used by both OCEANIC and OCEANICP
3589    checkpoint46h_pre
3590    
3591     Added code to convert surface volume flux (fresh water) into
3592     a mass flux when using P coordinates in the ocean (OCEANICP).
3593     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3594    
3595    checkpoint46g_post
3596    o Include a new diagnostic variable phiHydLow for the ocean model
3597      - in z-coordinates, it is the bottom pressure anomaly
3598      - in p-coordinates, it is the sea surface elevation
3599      - in both cases, these variable have global drift, reflecting the mass
3600        drift in z-coordinates and the volume drift in p-coordinates
3601      - included time averaging for phiHydLow, be aware of the drift!
3602    o depth-dependent computation of Bo_surf for pressure coordinates
3603      in the ocean (buoyancyRelation='OCEANICP')
3604      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3605        Theta, Salinity, and Pressure in the parameter list. This routine is
3606        presently contained in find_rho.F. This routine does not give the
3607        correct density for 'POLY3', which would be a z-dependent reference
3608        density.
3609    o cleaned up find_rho
3610      - removed obsolete 'eqn' from the parameter list.
3611    o added two new verification experiments: gop and goz
3612      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3613    checkpoint46g_pre
3614    
3615    checkpoint46f_post
3616    o Enable tangent linear (forward mode) gradient checks:
3617      - extended active file handling to g_... files
3618      - added TANGENT_SIMULATION to theSimulationMode
3619      - extended grdchk package accordingly
3620    o added tangent linear setup in verification/carbon/code_ftl
3621    o added adjoint setup in verification/front_relax/code_ad
3622    
3623    checkpoint46e_post
3624    o Added new equation of state -> MDJWF
3625      - EOS of McDougall et al., 2002, JAOT, submitted
3626      - caveat: the equation of state is only valid for a smaller (more
3627        realistic?) range of values than JMD95P/Z and UNESCO
3628      - added masks to the calculation of pressure in store_pressure
3629      - added more check values for density in check_eos (ini_eos.F), some of
3630        the old check values are out of the range of the MDJWF-eos, so don't
3631        expect perfect matches for those
3632    checkpoint46e_pre
3633    
3634    checkpoint46d_post
3635    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3636      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3637      case of pressure coordinates. eosType='JMD95Z' in
3638      combination with buoyancyRelation='OCEANICP' now causes an error.
3639    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3640      in find_alpha/beta.
3641    checkpoint46d_pre
3642    
3643    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3644      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3645    
3646    checkpoint46c_post
3647    o Changes necessary for ocean in p-coordinates
3648     -  Added new buoyancy relation = 'OCEANICP'
3649     -  Added new parameters = gravitySign (this used to be contained inside
3650        the factor dRdZ which I added when we first switched to R coordinates).
3651     X GM/Redi is not compatible (yet)
3652     X bottom drag and no-slip need to be debugged.
3653    checkpoint46c_pre
3654    
3655    checkpoint46b_post
3656    o Added new equation of state -> JMD95Z and JMD95P
3657      - EOS of Jackett and McDougall, 1995, JAOT
3658      - moved all EOS parameters into EOS.h
3659      - new routines ini_eos.F, store_pressure.F
3660    o Added UNESCO EOS, but not recommended because it requires
3661      in-situ temperature (see JMD95)
3662    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3663      unesco.f to be used with POLY3
3664    checkpoint46b_pre
3665    
3666    checkpoint46a_post
3667    o Added (atmospheric) pressure loading
3668      - new field in FFIELDS.h, etc...
3669      - new cpp flag ATMOSPHERIC_LOADING
3670    o Changed hFacC to _hFacC in calc_phi_hyd.F
3671    o Added SHORTWAVE_HEATING to some files for consistency
3672    checkpoint46a_pre
3673    
3674    checkpoint46
3675    further merges from release1_p5
3676    o new ctrl package
3677      - adopted from ECCO environment to enable optimization
3678      - added Eliassen Palm fluxes to controls
3679    o added Eliassen Palm flux controls to gradient check package
3680    o cost package
3681      - Compatible with new ctrl package
3682      - added Eliassen Palm cost hooks
3683      - modif's of existing cost functions
3684    o Adjoint-related bug fixes in kpp:
3685      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3686      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3687    o autodiff package
3688      - flow directives:
3689        + new for S/R do_the_model_io
3690        + enhanced for S/R checkpoint
3691        + new gmredi.flow
3692      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3693        disable adcommon.h/g_common.h by default.
3694      - fixed problem for adjoint of global_max
3695    o modified verification/carbon/
3696    o New setup for adjoint of global_ocean
3697    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3698    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3699    o incorporated hooks for sponge layer code (external_forcing.F)
3700    
3701    checkpoint45d_post
3702    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3703    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3704      (affects plume_on_slope "cg2d" output)
3705    o add new parameter deltaTfreesurf for free-surface time stepping
3706    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3707    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3708    o change phiMin in exp1 (to agree with documentation)
3709    o add new flags:
3710     - T,S forcing inside/outside Adams-Bashforth
3711     - turn off temp,salt advection and/or forcing
3712     - for each tracer, define internal flag for multiDimAdvection & A-B
3713    o monitor: change definition of KE to check conservation of Energy
3714    
3715    checkpoint45c_post
3716    o Removed f90 comments ("!")
3717    o Modified initialisations to enable exf package for MITgcm
3718      (without invoking ECCO_PACKAGE).
3719    o modifications to gradient check package (Martin Losch)
3720      - enable centered differences
3721      - modified format of standard output
3722    
3723    checkpoint45b_post
3724    o cleaned exchange calls in cg2d
3725    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
3726    o included CPP option SINGLE_LAYER_MODE in thermodynamics
3727      to configure barotropic setup (Martin Losch)
3728    o moved some initialisations within bi,bj loop in dynamics
3729      (TAF flow dependency)
3730    o in initialise_varia, moved call packages_init_variables
3731      before convective_adjustment_init
3732      (corresponding adjustment of TAF tape initialisation).
3733    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
3734    
3735    checkpoint45a_post
3736    o compute Rho over the whole domain (extend iMin,jMin indices)
3737    o specific exchange for X-slice domain (case Ny=1)
3738    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
3739    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
3740    
3741    checkpoint44h_post = checkpoint45
3742    o Fix to restore differentiability:
3743      place at which packages_init_variables is called in
3744      initialise_varia is crucial for reverse control flow.
3745    o modifications in GMRedi to enable stable adjoint
3746      (corresponding modif's in thermodynamics, dynamics)
3747    o added missing hook for sponge layer code in external_forcing
3748    o modified test cost functions
3749    o storing in gad_advection (plus removal of write(0,*)!
3750    o missing headers TR1.h added in convective_adjustment routines
3751    o errorMessageUnit set non-equal zero in eeboot
3752      (conflict on some platforms, e.g. IBM SP3)
3753    o modified carbon verif.
3754    
3755    checkpoint44h_pre
3756    o vertical grid option: allow to put the Interface at the middle between
3757      2 cell-centers ; replace delZ in pkg/kpp by drF.
3758    o GM Advective form: Tracers are advected using the residual transport (=
3759      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
3760    
3761    checkpoint44g_post
3762    o fix surface correction term in multiDimAdvection (affects plume_on_slope
3763      results) ; ifdef missing in thermodynamics.F
3764    
3765    checkpoint44f_pre,checkpoint44f_post
3766    o added PTRACERS package
3767      This allows an arbitrary number of passive tracers to be integrated
3768      forward simultaneously with the dynamicaly model.
3769      + Implemented so far:
3770        - basic forward algorithm (time-stepping, advection, diffusion, convection)
3771        - I/O and checkpointing
3772        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
3773      + Not implemented so far:
3774        - KPP
3775        - OBCS
3776      + No specific example supplied (yet) but global_ocean.90x40x15 has the
3777        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
3778        line in data.pkg.
3779      + This package is disabled by default since it increases storage.
3780    
3781    
3782    o testscript: added -cleanup option
3783    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
3784                 b) enable to filter 2D fields.
3785    
3786    checkpoint44e_pre,post
3787    o re-wrote convective adjustment to use pre-calculated weights
3788      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
3789      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
3790      Original calls to convect() still in place.
3791    
3792    chkpt44d_pre,post
3793    o added missing EXCLUDE_MONITOR flags
3794    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
3795      (incompatible typ in MIN/MAX expressions caused problems
3796      on IBM SP3)
3797    o in genmake added variable MAKEDEPEND
3798      plus resetting for case SunOS
3799    o added timer_stats.c routine for IBM SP3
3800    o removed variables in dynamics
3801    !!! I forgot to create tag chkpt44d_pre !!!
3802    !!! But chkpt44d_pre = chkpt44c_post    !!!
3803    
3804    o real fresh water flux implemented with non-linear free-surface.
3805    
3806    chkpt44c_pre,post
3807    o few fix (mask in shap_s2, EmPmR in external_field_load,
3808      USE_NATURAL_BCS in solve_for_P);
3809    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
3810    
3811    checkpoint44b_pre/_post
3812    o merge of relevant stuff from the ecco-branch:
3813      - genmake: removed $S64 overwrite for case SunOS
3814      - pkg/exf: update and corrections for field swapping and obcs
3815      - pkg/ecco: parameter lists for the_model_main, the_main_loop
3816                  harmonized between ECCO and MITgcm
3817      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
3818                      updated checkpointing_lev... lists for obcs
3819      - model/src: minor changes in forward_step, plot_field
3820                   added directive for divided adjoint in the_main_loop
3821      - pkg/mdsio: added mdsio_gl_slice
3822    
3823    o check parameters & config (chkpt44a_pre,post)
3824    o OBC and NonLin_FrSurf.
3825    
3826    checkpoint44
3827    o fix bug in mom_vi_del2uv
3828    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
3829    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
3830    o update AIM experiments (NCEP input files)
3831    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
3832    o added some stuff for AD
3833    
3834    checkpoint43
3835    o added two new advection tests
3836    o added global 4x4 degree ocean test
3837    o added test of H&S94 with free surface on cube
3838    o some final mods for gradient check, adjoint,...
3839    
3840    checkpoint42
3841      Fixed AD-related problems:
3842    o Store directives up-to-date with re-arranged Adams-Bashforth
3843      (mainly thermodynamics.F)
3844    o New store directives for multi-dim. advection schemes
3845      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
3846      * new common block and key passkey
3847      (mainly gad_advection.F)
3848    o Modified store directives for split of dynamics/thermodynamics
3849      for the case ALLOW_KPP
3850    o Cleaned argument list for timestep_tracer.F
3851    
3852    checkpoint41
3853    o re-formatted/added comments in prologues of key subroutines
3854      to work with protex
3855    
3856    checkpoint40
3857    o moved calc_gs, calc_gt and calc_tr1 back to model/src
3858    o added FLT (floats) package from Arne along with demo. experiment
3859    o re-arranged Adams-Bashforth scheme for tracers to allow easier
3860      implementation of forward-in-time forcing terms
3861    o more mods for non-linear free-surface including new variable
3862    o modified multi-dim method to work on cube
3863    o bug fix in KPP (from DM)
3864    
3865    checkpoint40pre9
3866    o added DST advection schemes
3867    o fix MPI bug on SGI's
3868    o modifications for non-linear free-surface
3869    o fixed conditionals for fixed flow/passive tracer only mode
3870    o added tension/strain form of stress tensor
3871    o changes to commenting of arguments for TAF/TAMC
3872    o added/updated many matlab scripts
3873    o added multi-dimensional advection method for tracers
3874      
3875    checkpoint40pre8
3876    o new package rw/
3877      Added method for dumping intermediate local arrays:
3878      mdsio_writetile - same as mdsio_writefield except works from inside
3879                        bi,bj loop
3880      mdsio_writelocal - same as mdsio_writetile except works for local
3881                         arrays
3882      write_local_r? - higher-level wrapper for mdsio_writelocal
3883      Controlled by diagFreq. Defaults to zero (ie. no dumps)
3884      Example given at end of mom_vecinv.F that dumps some local arrays.
3885    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
3886      control flux-form versus vector invariant code.
3887      Switch is runtime flag vectorInvariantMomentum (defaults to false)
3888      or genmake -DISABLE ...
3889    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
3890      (additional storing is now needed for case vecinv;
3891      currently nothing implemented to switch this storing off
3892      in case fluxform is used since no CPP flag available).
3893    
3894    checkpoint40pre7
3895    o bug fix in dynamics.F
3896      calc_viscosity called before k=1,Nr loop.
3897    o added some #ifdef's ALLOW_PASSIVE_TRACER
3898    o cleaned initialisations in ctrl_map_ini
3899      related to TAF
3900    
3901    checkpoint40pre6
3902    o split dynamics into thermodynamics & dynamics
3903    o corresponding split of calc_diffusivity into
3904      calc_diffusivity, calc_viscosity
3905      (kpp_calc_diff, kpp_calc_visc).
3906    o Added diffkr, kapgm to control variables
3907    o bug fix in gmredi_slope_limit for ldd97
3908    
3909    checkpoint40pre5
3910    o proper initialization of Adams-Bashforth time stepping
3911      + uses forward step for very first step of model (iter=0)
3912    o re-generated *all* output since almost all output is modified by this
3913      change (sorry but we've been putting this one off for about 2 years)
3914      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
3915        *not* regenerated since they are already out of date and I don't
3916        want to create the impression that they are suddenly working.
3917    o removed KAP stuff for DEC's
3918    o modified/added many .cvsignore files in */code and */input
3919    o added new expt "solid-body.cs-32x32x1"
3920      + this uses an alternative form of ini_curvilinear_grid.F which
3921        is not necessarily any better than the current one...
3922    
3923    checkpoint40pre4
3924    o added re-initialisations of utrans,vtrans,rtrans in
3925      calc_common_factors which are crucial for TAF.
3926    o extended iMin,jMin range for calc_common_factors,
3927      calc_diffusivity
3928    o added option ALLOW_PASSIVE_TRACER
3929    o a few minor updates and fixes
3930    
3931    checkpoint40pre3
3932    o created calc_gtr1.F for gad package
3933    o split the_main_loop and re-introduced forward_step
3934    o some recomputations of nIter0 for TAMC
3935    
3936  checkpoint40pre2  checkpoint40pre2
3937  o Updated to latest branch of AJA, JMC  o Updated to latest branch of AJA, JMC
3938  o Added gradient check package  o Added gradient check package

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