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revision 1.127 by adcroft, Thu Jan 30 18:35:42 2003 UTC revision 1.1063 by jmc, Tue Feb 10 22:23:28 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 pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
8      real fresh water flux (not yet)
9    o pkg/mdsio & rw:
10     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
11     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
12    o pkg/flt:
13     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
14       init_fixed & ini_varia.
15     - clean-up & simplify linear interpolation S/R:
16       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
17     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
18     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
19     - add vert. coordinate & horiz. indices to output files.
20     - change vertical position in initial condition, from index to depth [m].
21     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
22       (easier to get to a curvilinear grid) ; delX,delY no longer used.
23    o pkg/ggl90: a few modifications:
24     - fix bottom boundary condition, and interpolation of KappaE
25       near top and bottom
26     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
27     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
28     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
29    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
30      (maintain temporary backward compatibility, until next checkpoint)
31    
32    checkpoint61h
33    o pkg/diagnostics with "periodic averaging diagnostics":
34      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
35    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
36    o pkg/obcs: fix loop ranges for balancing code
37    o pkg/flt:
38     - improve criteria for finding which tile owns a float.
39     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
40    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
41      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
42      with ocean biogeo)
43    o pkg/flt:
44     - do some cleaning and fix the restart ;
45     - add output.txt in flt_example/results to get this pkg tested.
46    o genmake2: add an EXTENDED_SRC option and flag.
47       for now, cannot be turned on on command line (only through genmake_local)
48    o pkg/mdsio: read/write vector:
49     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
50     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
51       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
52     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
53      (drop to 4 digits matching for grad). But this test does not look very
54      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
55    
56    checkpoint61g
57    o pkg/flt:
58      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
59       + make OPTIONS file more standard.
60      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
61      - fix _BYTESWAPIO CPP-Flag
62      - standard reading of file-parameter "data.flt"
63      - fix argument list of S/R FLT_RESTART
64      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
65    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
66    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
67      a still unfixed compiler/optimization bug
68    
69    checkpoint61f
70    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
71      update results of global_ocean.cs32x15.icedyn test.
72    o move getcon.F from model/src to pkg/fizhi.
73    o pkg/exf: add parameter for extrapolation of temp up to the surface
74       and option to prevent negative evap (in bulk_largeyeager04 only).
75    o Prather Advection scheme: fix tracer conservation for divergent flow
76      (e.g., when using NonLin Free-Surface).
77    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
78    o gmredi (Visbeck-variable-K):
79     - add more parameters to Visbeck-variable-K.
80     - use a 5 points average for dSigmaR in Visbeck-K calculation
81       (more "homogenous": same stencil and same weights as in dSigmaH)
82     - update output of ideal_2D_oce experiment.
83    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
84      (#undef REAL4_IS_SLOW)
85     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
86       coordinate variable
87     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
88       (surface forcing fields), removes some of the functionality
89     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
90     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
91       probably not all: copy _RS surface flux fields to RL field before
92       calling DIAGNOSTICS_FILL
93     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
94       real*4 (CALL EXCH_*_RS) versions.
95     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
96       (generate new output).
97    
98    checkpoint61e
99    o gmredi (Visbeck-variable-K):
100      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
101      - change computation of Visbeck-K where Slope > Smax :        
102        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
103        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
104    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
105      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
106    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
107    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
108      does not become too large (to avoid precision problems in implicit-diffusion
109      solver); update ideal_2D_oce output.
110    o pkg ggl90:
111      - in ggl90_cal.F: compute only one set of visc/diff, used to
112        step forward TKE/T/S/momentum
113      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
114        have Prandlt =1)
115    o gmredi (fm07):
116      - add lower limit on Transition layer thickness + lower limit on 1/lambda
117      - allow to set few more params from data.gmredi
118    o pkg ggl90:
119          - add missing sqrt(2) factor in computation of mixing length
120            scale in ggl90_calc.F
121            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
122    
123    checkpoint61d
124    o adjoint modifs
125      - adapt to new field rhoInSitu
126      - allow to revert from StoreDynVars2D, StoreDynVars3D
127        to individual fields
128        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
129    o store 3-D (in-situ) density in commom block (DYNVARS.h)
130     - save 1 rho computation.
131     - no longer modify T & S inland when using down_slope pkg.
132    o gad_som : allow to switch to SOM advection for T & S without corresponding
133      pickup files (using new S/R: MDS_CHECK4FILE).
134    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
135      (for useSingleCpuIO to work in multi-threaded)
136    o pkg/shelfice:
137     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
138       with SHELFICEtopoFile in data.shelfice
139     - move code for reading ice shelf topography and modifying hFacC into separate
140       subroutines of the shelfice package
141     - separate initialisation of "fixed" and "variable" variables
142     - kTopC is not (yet) replaced by kSurfC, although this is possible
143    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
144    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
145      and rename:
146      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
147      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
148    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
149    
150    checkpoint61c
151    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
152      to add mass source/sink of fluid in the interior (3-D generalisation
153      of oceanic real-fresh water flux).
154    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
155    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
156    o new pkg: down_slope
157      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
158      - presently, modify T & S inland (dwnslp_calc_rho.F).
159        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
160      - implementation for ocean in P-coords not tested.
161      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
162    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
163      (to facilitate conversion of oceanic pkg to p-coordinate).
164    o change FIND_RHO to FIND_RHO_2D :
165      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
166    o new pkg: cheapaml
167    
168    checkpoint61b
169    o exch2:
170      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
171      - no longer depend on the order sequence (N,S,E,W).
172      - 3rd exchange no longer needed (tested with 24 tiles).
173      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
174      - exch_UV_A-grid readily available (but not yet tested).
175      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
176      (both are no longer needed) in exch_uv: no effect in forward run; but
177       get truncation error differences with adjoint exch.
178    o exch2:
179     - change index-bounds storage (moved from target to local tile,
180       more intuitive this way) ; rename/remove some variables.
181     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
182    
183    checkpoint61a
184    o exch2/matlab-topology-generator:
185      fix bug in index bounds for N-S internal exchange (hard to tell if this
186      had any effect on the solution).
187    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
188      is exceeded
189    o testreport: modify syntax of awk, so that it works also with
190      awk, and not only with nawk and gawk
191    
192    checkpoint61
193    o autodiff
194      Change default for TAF usage by removing argument '-nonew_arg'
195      This changes TAF subroutine argument list (ordering of active var.)
196      Omission of this flag leads to incompatibility w.r.t. TAMC
197      To restore TAMC-compatibility, need following modifs:
198      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
199      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
200      Tested TAF version is 1.9.22
201      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
202    
203    checkpoint60
204    --->>> This is the last checkpoint for which generating the adjoint
205    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
206    --->>> by default.
207    --->>> Future checkpoints will ommit this flag by default.
208    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
209    o pkg/grdchk: Add gradient check to etan0 perturbations.
210    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
211    o pkg/autodiff: more flexibility in zeroadj.
212      model/src: modifying do_oceanic_phys.F accordingly.
213    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
214    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
215      special setup of gmredi for which the adjoint is stable
216      enough for parameter optimization.
217    o bridging the gap between eddy stress and GM.
218      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
219          along with a change in CPP option (now ALLOW_EDDYPSI).
220      -> when using GM w/ GM_AdvForm:
221          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
222          is applied either in the tracer Eq. or in momentum Eq.
223          depending on data.gmredi (intro. GM_InMomAsStress).
224      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
225      The key modifications are in model/src/taueddy_external_forcing.F
226      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
227    
228    checkpoint59r
229    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
230      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
231      fix option to read coriolis(@ cell-corner) from files with CS-grid.
232    o pkg/mnc: add some attributes to standard 1D-coordinate variables
233    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
234      mass points, when using mnc for output
235      - add runtime parameter (missing_value, missing_value_int) to override
236        default (which is the value of getcon('UNDEF'))
237    o pkg/mnc: prepare mnc for the actual use of missing values with the
238      diagnostics package: small fix in mnc_cw_readwrite.template and more
239      initialisation of never used fields
240      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
241      versions
242    o pkg/thsice/thsice_ini_vars.F added default initial values so that
243      thermodynamics sea ice solver does not blow up when some initial fields
244      are missing.
245    o move from external_forcing_surf.F to ini_forcing.F
246      the p-coord. hack consisting in using pLoad to set phi0surf ;
247      update output of tutorial_global_oce_in_p (affected @ truncation level).
248    o Freshen up a bit hs94.1x64x5, notably:
249      remove rotationPeriod and tRef=5*0. (adjoint only), and add
250      exactConserv=.TRUE.
251    o pkg/generic_advdiff:
252      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
253      applies to files where Temperature & Salinity 2nd Order moments are used.
254    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
255      this uses a dynamically allocated internal state data structure
256      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
257      and requires a fortran 90 compiler
258    
259    checkpoint59q
260    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
261       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
262    o Refresh tutorial_global_oce_biogeo, notably:
263      - change bathymetry (put back seamounts in ACC, use hFacs)
264      - change EOS (POLY3 --> JMD95Z)
265      - use Bryan-Lewis vertical diffusivity
266      - use multidimensional advection
267      - remove old virtual virtual in dic pkg, now done through ptracer pkg
268      - change a couple of parameters in dic pkg
269    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
270    o pkg/obcs: change default to OBCSfixTopo = .true.,
271      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
272      - replace "debugMode" with "debugLevel .GE. debLevB"
273    o implementation of TAF directives for gchem,cfc,dic
274    o remove "exp5" (replaced by tutorial_deep_convection).
275    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
276      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
277      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
278      --> changes results in exp4, seaice_obcs
279    o tutorial_deep_convection :
280      update the set-up and increase resolution and domain size ; start
281      from pseudo initial conditions = output at t=120mn in order to see
282      something happening when running testreport.
283    o pkg/seaice: add os7mp as an advection scheme
284                  add check for advection schemes
285                  add a flag for restoring T and S underneath sea ice
286    o pkg/my82: add netcdf-support and diagnostics
287    o thsice pkg:
288      - Now hsMax limits snow height by turning it into ice following
289        flooding scheme (and now conserving energy)
290      - Slight rewriting of the formula in thsice_calc_thick.F
291      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
292      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
293    
294    checkpoint59p
295    o gchem / dic / cfc :
296      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
297      - add new parameter files: "data.dic" & "data.cfc" ;
298      - various re-arrangement in initialisation & header file ;
299      - fix tutorial_global_oce_biogeo for multi-threaded test.
300    o pkg/dic: test for "pickup_dic" file when restarting ;
301      if no pickup-file, can restart with a re-initialised pH (same as it did
302      before) providing pickupStrictlyMatch is set to False.
303    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
304      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
305    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
306      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
307    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
308     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
309       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
310    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
311       scheme to use for vorticty-term ;
312     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
313       (with default selectVortScheme, return to original discretisation)
314     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
315    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
316    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
317      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
318      also fix diagnostics VISCAHW & VISCA4W.
319    
320    checkpoint59o
321    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
322    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
323      move a few statemens out the main loop into separate loops
324    o pkg/shelfice:
325      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
326        (kg/m^2/s), does not break tests, because in verification/isomip,
327        rhoConstFresh=rhoConst (by accident)
328      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
329      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
330        new file model/src/seawater.F, so that they are available for all pkgs.
331      - convert potential temperature into in-situ temperature. This changes the
332        isomip tests => update tests
333    o add a flag writePickupAtEnd (default=true) to be able to suppress
334      writing a pickup at the last timestep
335    o tools/mpack-1.6 :
336      - disable automake (not working) and autoconf (not needed).
337      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
338        also cleaner with much less compilation warnings.
339    o pkg/profiles:
340      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
341      (for "less than 32 characters name" compiler requirement)
342    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
343      conditions that have a different sampling frequency than S/T/U/V obcs
344    o pkg/diagnostics (stats-diags):
345      - fix global Min/Max in case 1 processor get only empty tiles
346    o genmake2: replace (4 times)
347         make genmake_tc_1.o >> genmake_warnings 2>&1
348      with
349         COMM="$CC $CFLAGS -c genmake_tc_1.c"
350         echo $COMM >> genmake_warnings
351         $COMM >> genmake_warnings 2>&1
352      to make genmake2 always see the value of CC as specified in the optfile.
353    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
354      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
355      - modify verification advect_cs test to test SOM-advection on CS-grid.
356    o pkg/ctrl:
357      - Rewrite of ctrl_map_ini_ecco.F,
358        introducing a generic routine (ctrl_map_ini_gen.F).
359      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
360    
361    checkpoint59n
362    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
363      number in dedicate array "hdiag":
364      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
365        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
366      - many small changes (integer format) for large number of diagnostics
367      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
368        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
369    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
370      usingSphericalGrid, this allows to define the rotated grid coordinates
371      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
372      geographical coordinates according to the inverse of the rotation defined
373      by the Euler angles, so that Coriolis parameter and online-interpolation by
374      exf works with the geographical coordinates on XC/YC/XG/YG.
375      Naturally, this feature does not work with all packages, so some
376      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
377      profiles), because there the coordinates are assumed to be regular
378      spherical grid coordinates.
379    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
380      - introduce isopycnal diffusion coefficient control.
381    o tools/adjoint_options:
382      - additional control vector components.
383    o pkg/mnc: have mnc create marginally meaning full coordinate variables
384      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
385    o pkg/mypackage:
386      - add example of read/write pickup for state-var ;
387      - add entry points to the main code for state-vars diags & write-pickup.
388    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
389      transitions for useExfYearlyFields
390      - add new subroutine that determines the file to read from for
391        use*YearlyFields = .TRUE. and .FALSE.
392      - add a verification experiment to global_with_exf that tests
393        useExfYearlyFields with USE_EXF_INTERPOLATION defined
394    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
395      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
396      subroutines (which could be generated from a template, because they are
397      almost identical), for now they are included in obcs_prescribe_read.F for
398      simplicity
399    o pkg/exf:
400      - add a little more diagnostic to exf_interp_read (in analogy to
401        mds_read_field, can be turned off with debugLevel < debugLevA=1)
402      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
403        ugly but fast by unrolling short inner loops, inserting a unroll=8
404        directive in routine lagran, and splitting a loop and making do while the
405        outermost loop (the latter requires the intoduction of index arrays)
406    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
407    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
408      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
409    o verification/seaice_obcs: updated for restart test and latest options
410    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
411      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
412      for now this is only available for the C-grid code and also within
413      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
414    
415    checkpoint59m
416    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
417      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
418    o gad_som : fix flux output (& diagnostics) to have same units as other  
419      advection scheme fluxes (was previously multiplied by deltaT).  
420    o added verification/seaice_obcs both to test seaice open boundaries
421      and to provide an example matlab scrpt for generating them
422    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
423    o pkg/salt_plume: clean up salt_plume_frac.F to
424      remove redundancy in PlumeMethod 1 and 4
425    o pkg/kpp: added saltplume diagnostics
426    o pkg/obcs and pkg/seaice:
427      - do not set uice and vice to zero when OB*icefile are unspecified
428      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
429      - moved seaice tracer obcs after call to seaice_growth
430    o pkg/salt_plume: added various options for salt plume depth
431      criterion and for vertical distribution of the salt
432    
433    checkpoint59l
434    o pkg/ptracers: new version of ptracers pickup:
435      read meta file and write only fields which are needed to restart.
436      ( same logic as main pickup file ; also using pickupStrictlyMatch )
437    o pkg/seaice:
438      - add timescale for melting due to warm mixed layer as a means of
439        setting SEAICE_availHeatFrac more conveniently
440      - add a CPP-flag/runtime parameter check for flooding algorithm
441      - reformulated availHeat in seaice_growth.F to be independent of AREA
442    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
443      unit changes
444    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
445    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
446      SX vector computer.
447    o pkg/seaice:
448      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
449        seaice forcing fields can now be read only through pkg/exf
450      - removed some unused halos
451    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
452    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
453      or U/VICE from U/VWIND before computing U/VSTRESS
454    
455    checkpoint59k
456    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
457      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
458    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
459      all experiments pass when compile with un-initialised var. checking option.
460    o added pkg/salt_plume
461    o script to test restart (for now, in MITgcm_contrib/jmc_script)
462    o pkg/seaice: new read/write pickup version.
463      read meta file and write only fields which are needed to restart.
464      ( same logic as main pickup file ; also using pickupStrictlyMatch )
465    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
466    o lab_sea.hb87: modify the domain & update output.hb87.txt :
467      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
468      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
469      process. Fixed here by closing the domain at the Northern boundary.
470    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
471    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
472      a set of consecutive levels in/from a 3-D array.
473    o pkg/ptracers:
474      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
475      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
476    
477    checkpoint59j
478    o in pkgs: dic, obcs, offline, rbcs:
479      standard way to compute coeff. for time interpolation between 2 time reccords
480      which retains full precision (& make results less dependent on compiler).
481      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
482    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
483      packages instead of reading ice cover and wind speed separately
484    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
485     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
486      to allow to compile customized code before the update)
487    o cleaning-up:
488      - fix CPP instruction syntax in pkg/obcs
489      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
490        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
491      - fix some threads issue in IO parts.
492    o pkg/dic:
493      - add tons of "_d 0" (--> much better testreports !)
494       and then update outputs of tutorial_global_oce_biogeo
495    o pkg/mom_fluxform:
496      add a special version of momentum advection intended to conserve momentum
497      next to a bathymetry step or a coastline edge. (default = off = #undef)
498    o new read/write pickup version:
499      - for now, only implemented for main (mdsio) pickup file.
500      - write out only what is needed to restart; merge pickup_nh , pickup_ph
501        and main pickup together.
502      - read meta file; read only what is needed to restart; stop if a field
503        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
504        if it make sense (even if the restart is not perfect).
505      - if no meta file, assume that pickup to read corresponds exactly to
506        a pickup that would currently be written.
507      - read pickup written in the old format (until checkpoint59i) if it
508        recognizes an old meta file (no field-list).
509      - add a meta file in exp. which starts from a pickup: 2 cases:
510        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
511         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
512        b) a meta file describing the content of the associated pickup file
513         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
514    o pkg/mdsio & pkg/rw:
515      - new routine to read a meta file ; new set of routine to read
516        Multiple-fields file (with meta file).
517    o added open boundary conditions capability for seaice
518        HSNOW, HSALT, UICE, and VICE
519    
520    checkpoint59i
521    o adjoint:
522      * fix multiDimAdvection adjoint
523        (partial recomputation problem by TAF for fVerT(:,:,kDown)
524        and comlev1 size definition (maxpass vs. max. number of tracers)
525      * verification/global_ocean.90x45x15 adjoint now tests
526        NLFS and multiDimAdvection using DST3 (=30)
527      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
528    o pkg/kpp: add "_d 0" to real constant (if missing);
529      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
530      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
531    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
532      for internal parameters related to restart process (formerly from PARAMS.h)
533      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
534    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
535      as argument. (only atm2d & obcs write_pickup have not yet been updated)
536    o pkg/monitor:
537      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
538      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
539      - account for deep Atmosphere factor and density factor (anelastic)
540    o added open boundary conditions capability for seaice HEFF and AREA
541    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
542      thermodynamics
543      - requires a little reorganization, which affects the testreport results
544        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
545        so that now the conservative form is tested
546      - add a few comments
547    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
548    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
549    o add new diagnostics to seaice: advective, diffusive fluxes (only for
550      multidim-advection, for scheme 2 they are not filled) and transports,
551      thermodynamic growth rates
552    o change units of EmPmR (inside the code, + within coupling interface)
553      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
554      Affects results @ truncation level (cg2d match) and update output of
555       experiments: lab_sea(6), global_ocean.90x40x15(10),
556      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
557      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
558      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
559      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
560    
561    checkpoint59h
562    o pkg/exf:
563      - improve vectorization by moving if-statement out of loops in
564        exf_mapfields, exf_radiation
565      - exf_bulkformulae.F: introduce 2D fields and vectorize code
566    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
567    o testreport:
568      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
569        monitor & update offline_exf_seaice exp. output.
570      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
571    o pkg/seaice:
572      - bug fix in the evp solver: boundary conditions were affected be
573        masking of zMax/zMin (changes results)
574      - minor bug fix in boundary conditions in seaice_calc_strainrates
575        (changes results for no_slip)
576      - seaice_lsr.F: make interpolation of eta dependent on boundaries
577      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
578      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
579        stress formulation and no-slip boundary conditions
580    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
581      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
582    o pkg/seaice: a first HSALT time stepping equation has been checked in
583    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
584      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
585      without requiring DO-IF statements
586    o pkg/thsice:
587      use continuous power-law function for partition of energy between lateral
588      melting/freezing and thinning/thickening ; old code using step function
589      still available with #undef THSICE_FRACEN_POWERLAW
590      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
591    o testreport: change AD testing : check against results/output_adm.txt
592      using same scripts as for forward test.
593    
594    checkpoint59g
595    o adjoint testing: in preparation for changing testreport:
596      - output format: cost and grad written on separated lines
597      - ad output results in directory "results" (instead of "results_ad")
598    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
599    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
600    o pkg/ecco: allow user defined cost function contributions
601    o testreport:
602      Allow to choose (per experiment) the list of tested output variables
603       and the main variable (used to issue a pass/FAIL ) ;
604      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
605      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
606      Also modify printing of summary:
607       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
608       b) echo the list of tested variables in the individual summary.txt of
609          each experiment.
610    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
611      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
612      (but still depend on the tile decompostion of the domain).
613    o pkg/seaice: change a discretization detail to make the B-grid code
614      "more symmetric". This change is likely to remove all "ridges/leads" that
615      where quasi-aligned with the grid in B-grid solutions. It may also be
616      the solution to the stress coupling issues with the B-grid.
617    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
618      remove .cvsignore from input dir. (since testreport no longer run here).
619    o pkg/thsice:
620     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
621     - fix reshaping of sea-ice just after advection:
622       melt all the ice only if ice-volume is too small.
623     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
624       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
625     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
626    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
627      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
628    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
629      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
630      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
631      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
632      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
633      -> update output.txt
634    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
635     this affects truncation error: -> update output.txt of exp:
636      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
637      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
638    
639    checkpoint59f
640    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
641    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
642      a bounded range (in forward mode)
643    o pkg/ecco, ctrl, autodiff and mom_common:
644     internal parameter controls, completements of implementations
645    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
646    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
647      (not seem any difference in testing results).
648    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
649       at face corners.
650    o pkg/generic_advdiff:
651     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
652      loop range indices for computing vertical advection tendency
653      and do the calculation in the interior only (no overlap) ;
654      for now, only implemented for SOM advection (to save CPU time).
655     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
656    o exch2 adjoint
657      First set of changes:
658      - add exch2 hand-written adjoint templates
659      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
660        This will require cleanup in pkg/autodiff/*.F
661        (changed routines currently kept separate in verif. code/)
662      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
663        that used to hide exch2 or cubed-sphere specific code
664        (commented via 'cph-exch2')
665    o pkg/seaice
666      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
667    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
668       output of global_ocean.cs32x15.thsice .
669    
670    checkpoint59e
671    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
672      for B-grid vector (not yet tested) and C-grid vector (<- only used
673      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
674    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
675      (#ifdef ALLOW_SALT_PLUME)
676    o gather_2d/scatter_2d: removed halo regions
677    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
678      scheme and the corresponding test case (under front_relax dir). For now,
679      only available with Skew-flux form and not yet tested in realistic set-up.
680      adjoint: store directives updated, but gradient checks deteriorated,
681      so maybe GM/Redi adjoint is now broken.
682    o seaice adjoint
683      * add AREA, HEFF, HSNOW as control variable
684        (should not change lab_sea results)
685      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
686    o pkg/seaice:
687      * added computation of saltFlux in seaice_growth;
688        For time being, sea ice salinity is assumed constant
689        contribution of snow flooding to freshening of sea ice is neglected.
690        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
691        defaults to 0.0 in order to maintain backward compatibility.
692        Typical values for SEAICE_salinity are 4 to 10 g/kg.
693      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
694      * added SEAICE_availHeatFrac, which specifies fraction of surface level
695        heat content used to melt or grow ice
696      * commented out cap of HICE: it helps keep ice thinner
697      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
698      * applied OBCS T/S mask to HEFFM sea ice mask
699    
700    checkpoint59d
701    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
702     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
703     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
704    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
705     and change default value of parameter "GM_Small_Number";
706     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
707       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
708       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
709    o pkg/ecco: cost function when applying pkg/smooth to controls
710    o pkg/ctrl: add forcingPrecond run time parameter
711    o pkg/seaice:
712     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
713     - fix bug in metric terms of u-equation in LSR solver (implicit part),
714       changes verification/lab_sea
715     - rearrange implicit part of u-equation in LSR solver to make it easier to
716       read, understand, and debug. This causes changes at the truncation level.
717     - fix (serious) bug in the boundary conditions (sign error in the implicit
718       part) of the LSR solver. Changes all LSR results.
719     - fixed problem with HSNOW initialization to avoid thick snow when AREA
720       is initilized with small values - does not change lab_sea results.
721     - added HsnowFile initialization capability
722    o pkg/smooth: addition to model/src and pkg/ctrl so allow
723     initialization of pkg/smooth and application to control vector
724    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
725    o dependencies: pkg/profiles requires pkg/cal
726    o pkg/profiles:
727     - added option ALLOW_PROFILES_GENERICGRID
728         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
729         that interpolation information (grid points and coefficients) is provided
730         within the netcdf input files.
731         -> sample matlab scripts can be found in MITgcm_contrib/gael
732         that allow you to prepare netcdf input files.
733     - also modified: cleaner include statements, cleaner error print statements,
734       cleaner stops when error, and more tests of the netcdf input files consistency.
735    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
736    o pkg/seaice:
737     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
738       requires a new routine: seaice_diagnostics_fill.F
739     - make sure that seaice does not move if not forced (pressure replacement
740       method, Hibler and Ip, 1995), changes results
741     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
742     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
743       It is turned off by default (=-1.), because it changes the results.
744     - make it possible to read AREA from a file, too.
745    
746    checkpoint59c
747    o add S/R and diagnostics for oceanic mixed-layer depth
748    o move GMRedi call after all vertical mixing schemes (including KPP)
749    o pkg/thsice:
750     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
751      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
752    o pkg/obcs:
753     - bug fix for balance code
754    o pkg/seaice:
755      - allow values of SEAICE_elasticParm > 1
756      - add new parameter SEAICE_evpTauRelax as an alternative
757        to SEAICE_elasticParm
758      - make lsr boundary conditions free slip (by default), changes result
759      - add code for no slip boundary conditions for lsr
760      - set minimum of zeta to zero (and not 4e8) (changes results)
761      - add a cap on AREA after advecting AREA if seaice_growth is not called
762    o change calculation of Visbeck K:
763      - no longer depend on tapering scheme; instead, compute slope (limited
764        by GM_maxSlope). this is equivalent to what was comuted before with
765        clipping or linear tappering.
766      - fix vertical averaging (wrong by 1/2 level)
767      - leave the old version (but will not be maintained) within
768        #ifdef OLD_VISBECK_CALC / #endif
769      - update output of exp. ideal_2D_oce
770    o change error catch in calc_r_star to improve vectorization
771    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
772      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
773    o adjoint:
774      Re-organized adjoint checkpointing according to Matt Mazloff
775      (but with modifs/completions/cleanups)
776      Storing is now bundled into large arrays to optimized I/O
777      (and second step in cleanup of the_main_loop)
778    
779    checkpoint59b
780    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
781      - export/import (between ocean & coupler) fields needed for ocean DIC.
782    o pkg/seaice:
783      - get rid of three more exchanges seaice_calc_viscosities (required
784        different loop boundaries in seaice_lsr and seaice_ocean_stress)
785      - bug fix in seaice_ocean_stress (update of lab_sea required)
786      - reduce loop boundaries to necessary minimum also in seaice_evp
787      - go back to the old way of computing deltaC/Z as the adjoint likes that
788        better
789    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
790      passive tracer to an Age Tracer) + update output.txt
791    o pkg/exf:
792      - implement A-grid / C-grid selection for wind-stress input files.
793      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
794      for now, in exf_bulk_largeyeager04.F only :
795      - change implementation for case where windspeed + 2. components wind-stress
796        are read-in. AND use rhoConstFresh to convert evap.
797    o pkg/seaice:
798      - use correct EXCH_UV for wind-forcing (on A-grid).
799      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
800        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
801    o pkg/exf:
802      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
803      EXF_INTERPOLATION:
804      - merge global_with_exf/code version of exf_interp_read.F
805        to the main code ;
806      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
807        reading the file ; Important: This options needs to be defined to recover
808        previous code.
809        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
810      - no longer loose real*8 precision along the way when using exf_iprec=64.
811    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
812      - change discretisation of evp-solver in order to avoid another exchange
813        (changes lab_sea) and clean up a little
814      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
815        help the adjoint (this also changes the results slightly)
816      - add a few "_d 0" where they had been missing in seaice_evp.F
817      - cleaning up: remove unused seaice_calc_rhs.F
818    o pkg/exf: some cleaning-up:
819      - change various "constants" into runtime parameters
820      - cleaned-up Large&Yeager04 routine which should eventually
821        replace exf_bulkformulae.F (changed names of S/R and CPP)
822        and merged various ALLOW_ATM_WIND options
823     only used with thsice pkg (in thsice_get_exf.F):
824      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
825        which are used when useStabilityFct_overIce=TRUE (= the default)
826      - change default values of ice & snow emissivity and scale downward LW
827        by ice & snow emissivity.
828    o pkg/thsice:
829     fix few little problems, in thsice_calc_thickn.F:
830      - growth vertically (and not laterally) if iceFrac == iceMaskMax
831      - melt only laterally if hIce < hThinIce (as the comments say)
832      and in thsice_extend.F:
833      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
834      - start to form ice as soon as the minimum ice-volume is reachable.
835     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
836      and cpl_aim+ocn
837    o pkg/kpp
838     - move computation of surface related input fields to KPP into a new
839       subroutine kpp_forcing_surf.F
840     - remove wrong (within bi,bj loops) EXCH calls.
841     - little cleaning (add argument myThid in last position, cvs header ...)
842     - for now, fix conservation problem by exchanging KPPviscAz (may not
843       be the best fix)
844    o pkg/seaice
845     - check for inconsistent evp parameter/cpp-flag combination
846     - remove leftover errIO flat for obsolete name list error handling
847    o OpenAD
848     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
849    
850    checkpoint59a
851    o pkg/seaice: some parameter clarifications and a little bit of clean up
852    o pkg/thsice: rename run-time parameters:
853       himin       -> hIceMin
854       himin0      -> hThinIce
855       hihig       -> hThickIce
856       i0          -> i0swFrac
857       transCoef   -> bMeltCoef
858       frac_energy -> fracMelting
859      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
860       with default values (for now) that do not change the results.
861      remove old version of thsice vars advection in pkg/seaice.
862    o in FFIELDS.h:
863      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
864      - make pLoad & sIceLoad always available (but still only used if
865         ATMOSPHERIC_LOADING is #define).
866    o pkg/kpp: replaced _KPP_RL with _RL
867    o bug fixes for vertical diffusivity computations when both KPP and
868        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
869        are no longer updating the vertical diffusivity array
870        (passed as argument) but are (re-) setting those arrays.
871    o pkg/seaice: fix bug in evp solver, while doing that
872      - change (improve?) discretization of stress computations for both
873        cgrid-lsr and evp solver
874      - add a new routine to compute strain rates
875      - the above changes lab_sea results
876      - add no slip conditions for evp solver (off by default), lsr-version
877        may follow
878      - fix exchange for shear at Z-points (does not change lab_sea)
879      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
880        (to force the user to pick a time step since there is not "safe" way
881        of choosing it)
882      - add principal stress diagnostics
883      - rearrange fields for evp a little to avoid having to call a: too many
884        exchanges and b: exchanges for stress trensor components which we do
885        not have.
886      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
887        of evp, complete rewrite for lsr case (latter is does not yet work
888        in all cases)
889    o pkg/kpp: add code to have mixing in shelf ice caverns
890      - add myThid to all kpp routines (long overdue)
891    
892    checkpoint59
893    o pkg/exf:
894      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
895        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
896      - move exf header files from lower_case.h to UPPER_CASE.h ;
897        add missing cvs Header & Name
898      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
899      - add namelist param. selectStressGridPosition, exf_monFreq
900      - retire many _CLIM routines, and remove data.exf_clim
901        + params moved to data.exf
902        + climsst, climsss now handled by exf_set_gen, i.e.
903          climss?period=0 refers to constant field,
904          climss?period=-12 to monthly forcing
905      - split up namelists in data.exf
906    o pkg/seaice:
907      - remove seaice_exch and seaice_exch_uv
908      - remove superfluous exchange of theta
909      - add myThid to seaice_budget_ocean/ice
910      - add new interface for atmospheric wind forcing (C-grid only)
911        + new routine
912        + two new field (taux, tauy for stress over ice)
913        + removed one global field (DAIRN) for C-grid case only
914    o pkg/thsise
915      - 2nd set of modifs for thsice adjoint in conjunction with exf
916    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
917    
918    checkpoint58y_post
919    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
920      vertical diffusivity, similar to that in MOM4; turned on using
921      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
922      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
923    o Added capability for 3D specification of background vertical diffusion
924      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
925      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
926      "data" file that contains the 3D vertical diffusivity coefficients.
927    o ice dynamics (pkg/seaice) with thsice thermodynamics:
928      - add code within pkg thsice to advect & diffuse sea-ice fields
929      similar to (and will replace) what has been added in  seaice_advdiff.F,
930      but: - conserving Mass, Heat & Salt.
931           - better when using non-linear advection scheme (not yet fully tested)
932           - can also be used in atmospheric set-up (for now, only the diffusion).
933    
934    checkpoint58x_post
935    o IO option for global-file compact format:
936      - add options when generating topology (utils/exch2/matlab-topology-generator)
937      - add I/O capability (pkg/mdsio).
938      - adapt utils/matlab/rdmds.m to read this format.
939      for now long-line format not yet supported by pkg/mdsio (& exch2).
940    o shelfice: add a few diagnostics
941    
942    checkpoint58w_post
943    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
944      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
945      (and replace horiVertRatio in NH code).
946      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
947                         and tutorial_plume_on_slope (sensitive to truncation)
948    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
949      directly to drive seaice model (C-grid only)
950    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
951     - reintroduce computation of wind from stress,
952     - compute tau (in exf_bulkformulae.F) from windstress averaged to
953       mass points to avoid tau = 0
954     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
955    o rdmnc.m: make it work with "global" files created with gluemnc
956    o rdmnc.m : some improvements in dealing with singleton dimension
957      (tested on all testreport mnc output files).
958    o genmake2: disable pkg/profiles if netcdf test fails.
959    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
960    o move call to cal_readparms up to make calendar parameters/variable available
961      to all packages
962    
963    checkpoint58v_post
964    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
965      useDynP_inEos_Zc tested.
966    o pkg/exf: changes to properly interpolate/mask/scale initial fields
967    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
968      and portions thereof.  See read_cs.txt for description and examples.
969    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
970      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
971      following the great-circle arc between those 2 points.
972    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
973      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
974    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
975     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
976     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
977     - still needs work (not working with some options ; efficiency to improve)
978       and serious testing.
979     - use this scheme for temperature & salinity in 2 advection test exp.:
980       advect_xy & advect_xz, respectively.
981    
982    checkpoint58u_post
983    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
984    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
985    o testreport: add option "-skipdir" to skip some test.
986    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
987      momentum calculation.
988    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
989    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
990      remove checkpoint.F and the_correction_step.F (no longer used);
991      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
992    o add option (linFSConserveTr) to correct for tracer source/sink due to
993      Linear Free surface
994    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
995    o pkg/thsice: fix reading mnc-pickups
996    
997    checkpoint58t_post
998    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
999    o pkg/mdsio:
1000     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1001       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1002       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1003     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1004     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1005       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1006     - new S/R (to replace MDSWRITEMETA), which allows to write more
1007       informations (variable names, time ...) to meta files.
1008     - modify rdmds.m to give back the meta file content.
1009    o pkg/diagnostics: change vertical interpolation to be safer, and more
1010       flexible (define p-levels to interpolate to in data.diagnostics);
1011      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1012       diagnostic pointer.
1013    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1014    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1015    o fix multi-category seaice:
1016     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1017       SEAICE_MULTICATEGORY
1018     - fix short wave heat flux
1019    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1020       and allow to use EVP solver. Change forward lab_sea: test both EVP
1021       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1022    o Initial check-in of lab_sea adjoint
1023      (very similar to natl_box_adjoint/code_seaice)
1024      * used C-grid and EVP solver
1025      * used KPP, GM/Redi
1026      * uses inAdExact=.TRUE.
1027      * gradient checks fail for both ADM and TLM
1028        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1029        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1030        issue is related to forward mismatch between g77 an ifort
1031    o pkg/seaice: overhaul of thermodynamics
1032     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1033     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1034     - move a few global fields out of SEAICE.h into seaice_growth.F and
1035       make them 2D (FICE/QNETO/ ...)
1036     - remove FO (it is the same as QNETO)
1037     - introduce a few local fields to avoid modifying external fields such
1038       as atemp, etc.
1039    
1040    checkpoint58s_post
1041    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1042      changed exf_set_gen.F so that
1043        genperiod=0 means input file is one time-constant field and
1044        genperiod=-12 means input file contains 12 monthly means
1045    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1046      this affects truncation error ; generate new output file for exp. which
1047      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1048        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1049        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1050        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1051        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1052        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1053    o start implementation of deep-atmosphere and anelastic formulation
1054    o verification: remove 2nd copy of input files and use script "prepare_run"
1055      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1056    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1057    o profiles: fix for multithreaded case
1058    
1059    o diagnostics: rename few diags:
1060      s/'PRESSURE'/'RCENTER '/g
1061      s/'TICE    '/'oceFreez'/g
1062      s/'TAUX    '/'oceTAUX '/g
1063      s/'TAUY    '/'oceTAUY '/g
1064      s/'SWFLUX  '/'oceQsw  '/g
1065      s/DIFx/DFxE/g
1066      s/DIFy/DFyE/g
1067      and add few ocean-forcing diagnostics:
1068      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1069    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1070      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1071      as actual snow thickness.  It now refers everywhere to effective snow
1072      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1073    
1074    checkpoint58r_post
1075    o modifications to pkg/seaice/growth.F, which change results of
1076      lab_sea experiment: fixes pertain to melting snow over open water, to
1077      masking EVAP under sea ice, and to using the correct AREA variable for
1078      computations of EVAP, PRECIP, HSNOW, and GHEFF
1079    o add ability to read bathy, salt, and theta using MNC (off by def)
1080    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1081      both are turned off by default and do no change any results
1082    o seaice advection with pkg/thsice: a step toward the use of non-linear
1083      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1084    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1085      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1086      in natl_box (affects results @ truncation level: update output.txt)
1087    o multi-threading and IO:
1088      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1089      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1090        (needed to work with SingleCpuIO): tested in all verif. exp.
1091    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1092      affects the results (but none of the verification test uses this scheme).
1093    o Adding some pkg/diagnostics capability to pkg/seaice
1094      (will certainly be subject to changes)
1095    o ctrl: adding new control variables:
1096      lwflux, lwdown, evap, snowprecip, apressure, runoff
1097    
1098    checkpoint58q_post
1099    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1100      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1101      high_res_cube configuration by 4% on Columbia.
1102    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1103      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1104      dynamical allocation (seems to work in multi-threaded).
1105    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1106      single CPU io) so that TAF does not have to see EESUPPORT.h
1107    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1108    
1109    checkpoint58p_post
1110    o obcs: stop if obcs is used with useCDscheme = .true.
1111    o shelfice:
1112     - fix a sign error so that no slip at shelfice interface works
1113     - remove stop for combination non-hydrostatic code and shelfice. That does
1114       not mean, that the results are correct, but at least they are numerically
1115       stable
1116    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1117    o added adjoint exch routined for all exch*3d* routines
1118      and updated flow directives
1119    
1120    checkpoint58o_post
1121    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1122      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1123    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1124      and clean-up reading/writing of pickup files.
1125    o fix local version of read/write pickup (NH part) in rotating_tank/code
1126    o simplify EXCH interface:
1127     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1128     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1129    o added the regrid package
1130    o shelfice:
1131     - add a simple boundary layer scheme to reduce noise
1132     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1133    
1134    checkpoint58n_post
1135    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1136       local variable (not in common block).
1137    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1138      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1139      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1140        to work with SingleCpuIO.
1141    o add "_d 0" to real constant of pkg/cfc subroutines ;
1142       update exp. cfc_exemple & tutorial_cfc_offline output files.
1143    o multi-threading and IO:
1144      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1145        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1146      - barrier before and after reading.
1147      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1148      - avoid using MDS_WRITELOCAL for LAND pkg output.
1149      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1150        common-block variables ; Allows multi-threading with master-thread IO.
1151    o change default MAX_NO_THREADS from 32 to 4 ;
1152      and stop cleanly when MAX_NO_THREADS is too small.
1153    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1154    
1155    checkpoint58m_post
1156    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1157       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1158    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1159       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1160       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1161    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1162        add MITgcm_tutorials (= code + all the tutorials)
1163    o ecco, option to compute cost for total ssh (mean+anom)
1164    o consistent with addition of ptracer and ssh in pkg/profiles
1165    o profiles: adding ptracer and ssh
1166    o testreport: change multi-test output-file name
1167      (from output.txt.{name} to output.{name}.txt)
1168    o profiles: now ok for mutli-tiles case
1169    o seaice: add 4 parameters for different advection schemes for area,
1170      (effective) seaice thickness, enthalphy, and snow height. Their default
1171      is the standard parameter SEAICEadvScheme
1172    o calc_gw:
1173     - add cosFacU in zonal viscous flux (harmonic.visc.).
1174     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1175       of tutorial_plume_on_slope.
1176    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1177    o calc_gw: true flux-form, account for horizontal grid spacing.
1178      update rotating_tank results, but not plume_on_slope (affected at
1179      truncation level, 11 digits).
1180    
1181    checkpoint58l_post
1182    o calc_gw:
1183     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1184     - remove side-drag for now (need to fix it); update plume_on_slope results.
1185     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1186    o commit code to make SST/SSS weights spatially variable
1187      (based on either variable in-situ or variable initial T/S weights)
1188    o pkg/ecco:
1189      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1190        now based on horizontally varying weights wthetaLev, wsaltLev
1191      * cost_averagesflags now returns year indices in addition to day, month
1192      * sflux balance is performed on annual basis
1193        (sflxumm, sfluxmm2, bal_sfluxmm)
1194      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1195        including separate counting and multipliers
1196    o pkg/rbcs
1197      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1198    
1199    checkpoint58k_post
1200    o testreport:
1201     - always build in dir. "build" (if not there, mkdir build instead of building
1202       & running in input)
1203     - run in dir run (if it exists), in build otherwise.
1204     - call prepare_run (if input/prepare_run exists)
1205     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1206    o pkg/exf modifications to interpolation and rotation routines for more
1207       reasonable treatment of North Pole singularity: for tracers North Pole
1208       value is set to northernmost zonal-mean value, for zonal velocity it is
1209       set to zero, and for meridional velocity it is set to northernmost value.
1210    o pkg/exf/exf_check_range.F
1211     - add tile index to diagnostics and move stop statement to the very
1212       end of the routine.
1213    o pkg/diagnostics: (diagnostics_main_init.F)
1214      define title of isomorphic variables according to the current config.
1215    o pkg/thsice with pkg/seaice dynamics:
1216    - fix domain of computation (interior only, required for exf) and do exchanges
1217    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1218    o towards a standard way of dealing with multi-threading in MONITOR
1219      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1220    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1221       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1222    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1223    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1224    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1225       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1226    o tracer advection:
1227     - clean-up and simplify calc_common_factors.F
1228     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1229       advection subroutine (but still not used within DST advection S/R)
1230    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1231    
1232    checkpoint58j_post
1233    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1234      from file (collects calls previously in FORWARD_STEP)
1235    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1236    o adjoint store dir. adjusted accordingly
1237    o genmake2
1238      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1239    
1240    checkpoint58i_post
1241    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1242      on wind stress (SEAICEstressFactor defaults to 1.)
1243    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1244      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1245    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1246      on CS-grid: no longer loosing mass.
1247    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1248    o pkg/ggl90: fix sloppy output and fix a bug
1249    o pkg/seaice: added SEAICEuseEVPpickup parameter
1250      - Set to false in order to start EVP solver with
1251        non-EVP pickup files when using SEAICEuseEVP
1252      - fix sign error in diffusion in seaice_calc_rhs
1253    
1254    checkpoint58h_post
1255    * Modifications for bottom topography control
1256      o replace hFacC by _hFacC at various places
1257      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1258      o add non-self-adjoint cg2d_nsa
1259      o update autodiff support routines
1260      o re-initialise hfac after ctrl_depth_ini
1261      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1262    * Adding verification for 5x5 box (4-layer) bottom topography control
1263    
1264    checkpoint58g_post
1265    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1266       used for mean seasonal cycle, mean diurnal cycle); add an example
1267       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1268    o pkg/ggl90:
1269      - add parameter (minimum surface kinetic energy)
1270      - fix bug (avoiding division by zero)
1271    o couple pkg/thsice to pkg/seaice:
1272      - modify advection in seaice to accomodate new scalar fields to be advected
1273      - only muliDimAdection scheme work with seaice/thsice
1274      - mapping of thsice-variables to seaice-variables, back and forth
1275      - does not break the verification experiments, but does not give the
1276        desired results either
1277    o pkg/seaice
1278      - make (default) second order advection a bit less confusing?
1279    
1280    checkpoint58f_post
1281    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1282      to pkg/seaice):
1283      - new routines thsice_map_exf and thsice_get_exf provide the interface
1284      - add an additional formal parameter to thsice_solve4temp
1285    o pkg/exf:
1286      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1287      - correct Stefan-Boltzmann constant
1288      - new parameter for longwave surface emittance
1289      - separate some stuff from exf_bulkformulae into new routines  
1290        exf_radiation, exf_wind
1291      - add new parameters and constants: longwave emissivity for ocean, ice
1292        and snow, evaporation parameters over ice
1293      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1294        either wind from stress or stress from wind
1295    o pkg/thSIce:
1296    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1297    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1298       and THSICE_CALC_THICKN
1299    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1300    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1301      to make debugging easier.
1302    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1303    o pkg/bulk_force:
1304      - clean-up comments and parameters ;
1305      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1306    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1307      generate new output for test-experiment: aim.5l_cs.thSI
1308    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1309      testreport accordingly
1310    
1311    checkpoint58e_post
1312    o SEAICE_CGRID adjoint done
1313    o R_STAR adjoint implemented.
1314      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1315      * need to sort out init. of h0facc, etc.
1316    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1317      to be able to use it in pure forward.
1318    
1319    checkpoint58d_post
1320    o upgrade simple test-experiment to tutorial example:
1321     step.1: duplicate the experiment and (step.2) will remove the old copy.
1322      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1323      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1324      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1325      tutorial_global_oce_biogeo    <- copy of dic_example
1326      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1327      tutorial_plume_on_slope       <- copy of plume_on_slope
1328      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1329      tutorial_global_oce_optim     <- empty for now (David ?)
1330      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1331     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1332    o correct a sign problem in cost_scat.F
1333    o obcs and ptracers: fix boundary conditions for advections schemes
1334      with larger stencil
1335    o thsice adjoint: start
1336    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1337      completeness
1338    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1339      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1340    o ptracers adjoint:
1341      * avoid extensive recomputatations
1342      * fix missing re-init. of gptr (missed by TAF)
1343    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1344      me to turn off the excessive output to STDOUT that this package produces
1345    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1346      and add those terms in Vector-Invariant formulation.
1347    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1348      if the control period (xx_hfluxperiod etc) is 0
1349    o in profiles pkg, clean routines and fix details
1350    o in ecco pkg, reading ssh data:
1351      fix problem in case the model does not start at iter0=0
1352    o fix mnc-pickup/restart for ptracers
1353    o new package prifiles:
1354      code to compute profile-based cost by Gael Forget
1355      (modifs in ecco, ctrl, autodiff)
1356    o Benign bug fix in initialization (spotted by M. Mazloff) of
1357      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1358    
1359    checkpoint58c_post
1360    o adjoint: finish NLFS adjoint and provide reference output in
1361      verification/global_ocean.90x40x15/results_ad_nlfs
1362    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1363      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1364      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1365      with SEAICE_CGRID defined.
1366    o move calendarDumps from "data" to "data.cal" and clean-up the code
1367      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1368    o add useEXF & useCAL flags (for now, set in hard-coded way)
1369    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1370      (were missing in NH mode, and wrong in quasihydrostatic mode).
1371      waiting for Chris updated version of calc_gw to add those CALLs.
1372    o fix bug in quasihydrostatic S/R ;
1373      add a test for this option: global_ocean.90x40x15.qshyd
1374    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1375      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1376    o add on/off flag useOffLine for package OFFLINE
1377    o seaice:
1378      - modify advection so that it works also on the C-grid
1379      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1380        problem in multi-tile runs with C-grid
1381      - add flags for clipping ice velocities and/or masking solver forcing
1382      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1383        C-grid solver
1384      - added a few comments to seaice_diffusion.F
1385      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1386        are now exclusive)
1387      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1388        required re-ordering the code a little:
1389       + make DAIRN global variable (defined in SEAICE)
1390       + move computation of the viscosities eta and zeta into a new separate
1391         routine (because I need to recompute them in seaice_ocean_stress.F)
1392    
1393    checkpoint58b_post
1394    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1395      update output.txt of exp. aim.5l_cs.thSI
1396    o various mnc cleanups and improvements:
1397      + shrink lookup tables by factor of ~4
1398      + better error reporting when running out of lookup space
1399      + able to handle longer path/file names (up to 500 chars)
1400    o adjoint:
1401      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1402      - TBD: "hidden" mom_vecinv recomp. in dynamics
1403    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1404     (allow to differentiate between forcing components using new integer flags:
1405      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1406     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1407    o ecco
1408      - enable trend removal from SSH anomaly obs.
1409    o adjoint
1410      - a fix for PmEpR when #undef EXACT_CONSERV
1411      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1412      - try to fix "hidden" recomp. in forward_step for NLFS
1413        (NLFS seems broken sometimes after I checked it in)
1414    o seaice:
1415     - add c-grid version of the dynamic solver:
1416       + three new routines that are the c-grid substitute lsr, dynsolver
1417         and ostres
1418       + put a few fields that were local to dynsolver into global common
1419         blocks, so that I can move the computation of stresses etc into
1420         seaice_lsr (saves coding but may break the adjoint).
1421     - replace more hardwired parameters by runtime parameters
1422     - add ice masks that mask the rhs of the implicit solvers where there
1423       is no ice (commented out in seaice_dynsolver, because i am not sure
1424       if this works properly), eventually this should replace the clipping
1425       of ice velocities in seaice_dynsolver to +/-40cm/s.
1426    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1427      include it only where its needed
1428    o move balancing of fluxes before the call of external_forcing_surf
1429    o seaice:
1430      - correct units of turning angles (now they are really in degrees)
1431      - move computation of GWATX/Y out of main routine into dynsolver
1432      - initialize GWATX/Y in seaice_init
1433    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1434      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1435    o seaice: add runtime flags for turning angles (default to zero)
1436    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1437      and trend from exf forcing and ctrl control adjustments
1438    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1439      (since checkpoint57x_post)
1440    o change the default rotation period to 86164.s = the Earth rotation
1441    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1442      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1443    o seaice advection: add code for choosing between the default (2nd order
1444      central differences) and multiDim advection schemes provided by
1445      pkg/generic_advdiff
1446    o seaice:
1447      - removed all references to SEAICE_GRID.h fields from
1448        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1449        (cubed-sphere configuration will change a little)
1450      - grid computations in seaice_init are obsolete now.
1451      - cleaned up code a little so that is easier to read (hopefully).
1452      - added new (better?) discretizations of default advection and diffusion
1453        (turn on with SEAICEuseFluxForm)
1454      - replace 1 in 3d global fields by kSurface in growth.F
1455      
1456    checkpoint58a_post
1457    o seaice:
1458      - bug fix in advect.F
1459    o shelfice:
1460      - separate shelfice load anomaly from pload (breaks with time
1461        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1462        Its default is 0., but it may be computed more cleverly from (unknown)
1463        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1464        done offline. A good approximation of the pressure load anomaly is
1465        necessary to avoid large initial adjustment processes underneath
1466        deep-reaching shelfice.
1467      - small fix in ISOMIP shelfice_thermodynamics
1468      - add more sophisticated thermodynamics of Hellmer (1989), this is
1469        now the default
1470      - give a few constants more intuitive names
1471    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1472      if bulk formulae are used in long integration (especially EmPmR). Turn
1473      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1474      if balancePrintMean, the imbalance that is substracted is printed to
1475      STDOUT.
1476    o fix bug (typo) in obcs_apply_eta.F
1477    o add a new package shelfice which enables us to model the circulation
1478      underneath shelf-ice with draughts of hundreds of meters.
1479     - works
1480     - to do: + include improved thermodynamics
1481              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1482                instead of new field kTopC
1483              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1484                instead of new field R_shelfIce and new code in ini_depth.F
1485                and ini_mask_etc.F?
1486              + adjust vertical mixing schemes?
1487    o seaice pkg:
1488     - add a cpp-flag to include a simple formula for a salinity dependent
1489       freezing point of sea water at the surface
1490     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1491       meridional stresses are now different (and hopefully correct)
1492    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1493       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1494       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1495    o pkg/diagnostics: add options and parameters for regional-statistics
1496       diagnostics ; define regions by reading a region-mask from a file
1497       (might add other options later)
1498    o pkg/bulk_force:
1499     - add option and parameters to use AIM surface-flux formulae.
1500     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1501       others forcing fields (defined in PARM05, parameter file "data") are loaded
1502       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1503     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1504     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1505     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1506       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1507     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1508    
1509    checkpoint58
1510    o add "--embed-source" option to genmake2 which, when the supporting
1511      tools can be compiled (as determined by genmake2) will turn on the
1512      embed_files package which then embeds the entire MITgcm source code
1513      (*.[fFhc] + Makefile) used for the build within the executable
1514      - requested by CNH but off by default
1515      - adds a paltry <9MB to the mitgcmuv executable in most cases
1516      - only writes the output when useEMBEDSRC in eedata is true
1517    o clean up 3-dim. relaxation codes:
1518      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1519      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1520      * Thanks to Tom Haine for testing!
1521    
1522    checkpoint57z_post
1523    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1524      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1525    o fix the pickup behavior for obcs in combination with ptracers
1526    o fix a bug in ptracers_external_fields_load
1527    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1528      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1529    o transfered surface NH pressure to eta field (if exactConserv).
1530    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1531         and update lab_sea output.txt file.
1532    o completing 3-dim. relaxation code: additional term
1533         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1534      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1535      * At compile time, in "EXF_OPTIONS.h" set
1536          #define  ALLOW_CLIMTEMP_RELAXATION
1537          #define  ALLOW_CLIMSALT_RELAXATION
1538      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1539          tauThetaClimRelax3Dim = 15552000.0,
1540          tauSaltClimRelax3Dim  = 15552000.0,
1541      * 3 cases:
1542          1) Use a constant-in-time 3-dim. field
1543          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1544          3) Real-time relax. to time-evolving prescribed field
1545    o Adding Laplacian-type smoothness constraint on
1546      initial and boundary (forcing) controls (ic, bc)
1547      * enable at compile-time via
1548        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1549      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1550      * Absolute scale somewhat unclear so far
1551      * no area weighting was included since no other cost term does so far
1552    
1553    checkpoint57y_post
1554    First step for a NLFS adjoint
1555    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1556    o new init. routines for calc_r_star, calc_surf_dr
1557    o still need to deal with ini_masks_etc
1558    o testreport seemed happy
1559    checkpoint57y_pre
1560    
1561    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1562    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1563    o add new offset feature to offline pkg (plus minor cleanup)
1564    o cfc fixes for final year of integration
1565    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1566      be in GCHEM_OPTIONS).
1567    
1568    checkpoint57x_post
1569    o fix testreport Pb in multiple test experiment.
1570    o cleanup our namelist syntax in verification:
1571      - make it more F95 standards compliant (some work still needed)
1572      - allows the vast majority of our tests to work with gfortran
1573    o Non-Hydrostatic:
1574     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1575     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1576    o Allow to apply AB on T,S rather than on AB(gT,gS):
1577     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1578     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1579       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1580     - need a "clever" read_pickup to restart from the other AB formulation
1581    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1582    o remove some unused variables (reduces number of compiler warnings)
1583    o adjoint
1584      * Disable useVariableViscosity for adjoint for time being
1585        (there are a number of extensive recomputations)
1586      * Initialize certain variables needed for adjoint
1587    
1588    checkpoint57w_post
1589    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1590                 fix the singleCpuIO RS version of MDSWRITEFIELD
1591       and add a WARNING if using globalFiles=T with multi-processors.
1592    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1593      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1594    o tracer advection scheme:
1595      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1596       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1597       was not very convenient).
1598      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1599       (further tests needed for the implicit DST & Flux-Limiter schemes).
1600    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1601      and sRef for convenience, handy, when you want to initialize
1602      ptracers in a large domain with a constant non-zero value. Also,
1603      untangle ptracers_init.F a little.
1604    
1605    checkpoint57v_post
1606    o change dome exp. to use variable viscosity in side-drag terms.
1607    o remove all the files from the cfc_offline test since they are now
1608      incorporated into tutorial_cfc_offline which has been producing
1609      identical results for a few days of testing
1610    o add new parameter: sideDragFactor to enable half-slip-side BC
1611      and change side-drag S/R to use viscosity from mom_calc_visc
1612      (can switch back by setting sideDragFactor=0.); affects results at
1613      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1614       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1615    o vorticity & strain are now computed without masking, to account for
1616      no-slip-side BC in variable viscosity calculation ; mask is applied
1617      anyway later on, before computing advection/coriolis terms.
1618    o modify exp4 to test new obcs support for reading from external files
1619      and for passive tracers
1620    o fix behavior of ptracers_monitor when monitor output is written to a
1621      netcdf-file; still not independent of monitor.F (writes in the same
1622      file).
1623    o change default value of tRef (put a uniform, meaningful value for ocean
1624      & atmos) and initialize sRef (was missing, as Martin mentioned).
1625    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1626      to be proportional to enstrophy dissipation length.  Thus,
1627       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1628      This is now consistent with Smagorinsky and with the manual.
1629    
1630    checkpoint57u_post
1631    o OBCS and PTRACERS: add open boundary support for passive tracers
1632      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1633        OB-values from file; this is not different from the way theta and salinity
1634        are treated
1635      - however, Orlanski-radiation conditions are not supported, and the model
1636        will stop if you use pTracers and Orlanski at the same time.
1637      - beefed up the rountine obcs_external_fields_load: now only those open
1638        boundary values are overwritten with values from files for which there
1639        are really files, otherwise the OB-fields remain untouched. This makes
1640        it possible to use different OBs at different ends of the domain (as
1641        with EXF)
1642    o reduce number of exch calls in shap_filt (s2).
1643    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1644      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1645    
1646    checkpoint57t_post
1647    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1648    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1649      same truncation, independent of the face number: affects affects several
1650      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1651    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1652      note that biharmonic viscosity + no-slip was not tested in any experiment.
1653    o fix bug in non-linear free-surf side-drag ; generate new output for
1654      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1655    o make mnc honor the writeBinaryPrec flag for most kinds of output
1656    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1657    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1658      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1659    o add brackets in multi-terms sum to get same truncation, independent of
1660      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1661      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1662    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1663      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1664      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1665      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1666      Suggested values of viscosity parameters found in mom_calc_visc.
1667      Many new viscosity diagnostics available.
1668    
1669    checkpoint57s_post
1670    o Add clearing-house for viscosity calculations, mom_calc_visc and
1671      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1672      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1673      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1674      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1675      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1676      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1677      ViscAhStrain and viscAhTension are now retired.
1678    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1679    o In response to JMC's bug report, genmake2 now ignores any soft-links
1680      that it finds in the *current* directory when searching for files.
1681      Soft-links found in any other source directories will still work as
1682      they did before.
1683    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1684      a C routine to unlimit the stack size
1685    o mnc-ify pkg/aim snapshot vars
1686    o mnc-ify pkg/land as requested by Daniel
1687    o various changes to mnc including:
1688      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1689      - output can now be grouped so that all files within a group
1690          change the ITER portion of their names in lock-step together
1691      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1692          and works with both EXCH1 and EXCH2 (but needs more testing)
1693      - writing works for all verification test cases w/ g77 on Linux
1694    
1695    checkpoint57r_post
1696    o make MNC variable initialization happen earlier
1697    o add diagnostics for (almost) each term of the momentum Eq.
1698    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1699    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1700    o remove MINIMAL_TAVE_OUTPUT option ;
1701      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1702    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1703      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1704    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1705    o add time-dependent SST, SSS control
1706    o cost terms in ecco/ modularized (new cost_generic.F)
1707    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1708    o new infrastructure for seaice model vs. obs misfits in seaice/
1709      * driver from the_main_loop.F is seaice_cost_driver.F
1710      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1711      * gradient check in Exp. 6a of natl_box_adjoint/
1712    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1713      (see README file)
1714    
1715    checkpoint57q_post
1716    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1717    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1718      - bug was reported by Jean-Michel and Ian Fenty
1719    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1720      update exp. cpl_aim+ocn output.
1721    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1722      Needed for high-res. runs with large global files
1723      to be able to limit tapelev size
1724    o Changed some tests for adjoint:
1725      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1726      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1727      * global_ocean.90x40x15/ back to default 3-level checkpointing
1728    o Modifications to enable scripted COMMON to MODULE conversion
1729      * verification/OpenAD/code/ has necessary scripts and description;
1730      * converts, compiles and runs successfully;
1731    
1732    checkpoint57p_post
1733    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1734    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1735      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1736    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1737    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1738      (was already the case for dissipation with mom_vecinv,
1739       and also the case for grad.PhiHyd when staggered-timeStep)
1740      This will allow to put dissipation out-off the AB time-stepping.
1741     Unfortunately, affects truncation error. Update output of exp. that "fails"
1742      (cg2d matching number) and leave the others for later: front_relax(10),
1743      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1744      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1745    
1746    checkpoint57o_post
1747    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1748      (2) its ready to be documented during the 20050801 DocFest
1749    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1750      for ideal_2D_oce and lab_sea on linux_ia32_g77
1751    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1752      in global1x1_tot/code_seaice_adj to access indices 32, 33
1753      (worth another tag)
1754    
1755    checkpoint57n_post
1756    o adding precip control xx_precip 32
1757    o adding swflux control xx_swflux 33
1758    o Replacing 10 forcing penalty cost routines by 1 generic.
1759    o Implementing partitioning in time-mean and variable adjustment
1760      for atmos. state.
1761    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1762    o in natl_box_adjoint:
1763      * updated exp 1 to 10
1764        (but does not have time-mean vs. variable split results yet)
1765    o updated global1x1/*_seaice_adj/
1766      to incorporate latest changes
1767    o enable useSingleCpuIO for mdsio vector routines
1768      (applies in particular to tapelev I/O)
1769    o removed inefficient K-loop in all active_file*control*.F
1770    
1771    checkpoint57m_post
1772    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1773      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1774    o pkg/exch2: filling of face-corner halo regions is optional
1775      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1776    
1777    checkpoint57l_post
1778     tag before updating tutorials (pre-release-2)
1779    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1780       for output and interpolation of input fields onto model grid)
1781    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1782       Affects results of exp. rotating_tank ; update output.txt.
1783    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1784          and taking the square quantity and/or using a fraction-weight field.
1785    o fix aim_diagnostics_init.F mate numbers.
1786    o add mnc output capability to diagnostics/diagstat and update
1787      our cvsignore files for the ACSII output generated
1788    
1789    checkpoint57k_post
1790    o lab_sea now uses diagnostics package and provides a suite of
1791      new EXF diagnostics output.
1792    
1793    checkpoint57j_post
1794    o exf
1795      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1796        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1797        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1798      * extended diagnostics output
1799        - now includes all EXF variables
1800        - hs, hl moved to common block
1801        - separate S/R for diagnostics, called after ctrl vector is added
1802        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1803        - EXFqnet contains true Qnet (i.e. includes qsw)
1804      * updated verif. lab_sea, global_with_exf
1805      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1806        to ensure that diagnostics sees a true EXFqnet
1807    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1808    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1809      several times with different frequencies.
1810    o mnc-ify the thsice package as requested by Daniel Enderton
1811      - the monitor--MNC output needs work
1812      - many attributes need to be added (most are currently blank)
1813    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1814      - many attributes need to be added (most are currently blank)
1815    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1816    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1817    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1818      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1819         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1820    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1821     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1822    
1823    checkpoint57i_post
1824    o Diagnostics package was changed: diagnostic allocation is now deactivated
1825      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1826    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1827      add 1rst Order upwind vertical Shear.
1828    o add a quick fix for A/B checkpointing in OFFLINE mode
1829    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1830      end-run around the C/Fortran linking horror in eesup/src/timers.F
1831    o added pkg/runclock: allows user to terminate run based on wall clock
1832    o added non-hydrostatic scaling parameter: nh_am2
1833    o pkg/my82: futile attempt to make results compiler-independent by adding
1834      some "_d 0", etc. no effect.
1835    o for mnc output, fill the 'T' coordinate var with myTime and create a
1836      separate 'iter' variable for iteration count
1837    o pkg/diagnostics:
1838      add new capability: output of Global/Regional & per-level statistics ;
1839      tested against monitor output (including land & thSIce) on various exp.
1840    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1841    
1842    checkpoint57h_done
1843      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1844      data.diagnostics, data.gchem, data.ptracers) is done.
1845    
1846    o pkg/diagnostics: prepare for Global/Regional statistics.
1847      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1848    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1849      and rename it: DIFFERENT_MULTIPLE
1850    
1851    checkpoint57h_post
1852    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1853    o pkg/diagnostics: change output frequency, now in seconds (instead
1854      of Nb of iterations). This requires to change data.diagnostics.
1855    checkpoint57h_pre
1856    
1857    o in mnc, let the user create the output dir if both mnc_outdir_date
1858      and mnc_outdir_num are false
1859    o add fflags() to pkg/diagnostics which allows one to specify, on a
1860      per-file basis, the file precision [default behavior is unchanged]
1861    o added diagnostics to pkg/kpp, including computation of mixed layer
1862      depth based on a temperature/density criterion
1863    o updated verification/natl_box to test the new pkg/kpp diagnostics
1864    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1865    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1866    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1867      not mnc -- this mistake was found by JMC and is now corrected
1868    
1869    checkpoint57g_post
1870    o add Adams-Bashforth 3rd Order time stepping:
1871      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1872      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1873    checkpoint57g_pre
1874    
1875    o make lambda[Theta,Salt]ClimRelax spatially varying
1876      (default remains spatially uniform constant based on tau)
1877    o added new control variables
1878      * init. uVel, vVel, etanN
1879      * lambda[Theta,Salt]ClimRelax
1880    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1881      (suggested by G. Forget)
1882    
1883    checkpoint57f_post
1884    o add parameter "baseTime" = model base time = time at iteration zero
1885      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1886      account for baseTime shift
1887    o move Coriolis arrays from PARAMS.h to GRID.h
1888    checkpoint57f_pre
1889    
1890    o mnc-ifying the seaice package
1891    o introduced an alternative length scale calculation for use in the limiting
1892      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1893    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1894    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1895      as well as grad(vort3).  Made it compatible with both approximate form
1896      for the cubed sphere and full form of these gradients.  Added flag
1897      useFullLeith to select between approximate and full form.  
1898    o add "d0" in getcon.F to reduce differences between compilers/platforms
1899      update output.txt of exp. fizhi-gridalt-hs
1900    o change port_rand funtion to allow to set the seed.
1901    o fix obscure MNC bug involving conversion between reals and integers
1902      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1903        new version is now more standards-compliant
1904    o adjoint-related modifications
1905      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1906      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1907      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1908    
1909    checkpoint57e_post
1910    o Adding eddy stress controls a la Ferreira et al.
1911    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1912    
1913    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1914      update output.txt of exp. fizhi-gridalt-hs
1915    o add more "Z" dimensions and associated coordinate vars to MNC
1916    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1917    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1918      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1919      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1920      months and years.  Requires pkg/cal.
1921    o diagnostics: add pickup functionality
1922      - off by default for backwards compatibility
1923      - current version only uses MDSIO -- MNC will be added
1924    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1925    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1926    
1927    checkpoint57d_post
1928    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1929    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1930      output from the diagnostics package
1931    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1932    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1933      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1934    o add coordinate variables to the MNC output from the diagnostics package
1935    o change MNC-flags default value: true when useMNC=TRUE
1936    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1937      the ability (off by default) to read the grid information using MNC
1938    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1939    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1940    o do snap-shot diagnostics at the middle of the time-interval (instead of
1941      at the end).
1942    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1943      new test for AIM with thSIce + slab-ocean
1944    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1945    o move state variable diagnostics to the beginning of the time step ;
1946      (note: still needs some work specially for snap-shot diagnostics)
1947      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1948    
1949    checkpoint57c_post
1950    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1951    o generate new output.txt files on faulks with g77 & the new -ieee option
1952    checkpoint57c_pre
1953    
1954    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1955      update output.txt of exp. global_ocean.90x40x15
1956    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1957      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1958    o add saltFlux(+File) forcing capability with periodicExternalForcing
1959    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1960    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1961    o improvements for the MNC output from DIAGNOSTICS:
1962      - correct handling of the unlimitied dimension
1963      - all dims now have associated coordinate variables
1964      - variables located at U, V, and Corner ("Z") points are now written
1965        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1966        *all* data points are output
1967    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1968    o added pkg/seaice/seaice_monitor.F
1969    o mdsio_readfield.F can now read files visible only to master MPI process.
1970    o pkg/seaice: some test code for ice-modified ocean stress
1971    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1972      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1973      spurious negative numbers for precipitation and humidity.  Will cause
1974      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1975    o pkg/ctrl/
1976      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1977        May be enabled via doPackDiag
1978      *  introduce z-scaling of
1979         + gradient (doZscalePack) and
1980         + control (doZscaleUnpack)
1981    o pkg/mdsio/
1982      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1983      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1984    
1985    checkpoint57b_post
1986    o simplify options in diagnostics_fill arguments (remove weird combinations)
1987    o fix MNC coordinate variables so that they now contain per-face index
1988      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1989      general, EXCH2 grids are only aligned to a "local" coordinate system
1990    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1991    o Implement instantaneous output within pkg diagnostics:
1992      setting a negative frequency in data.diagnostics produces
1993     "snap-shot" output (as opposed to time-average if freq > 0)
1994    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1995      NOTE: change ptracer diagnostics name: use 2 characters to work with
1996            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1997    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1998      becomes the coordinate variable for the 'T' dimension
1999    o add CF-style coordinate variables to MNC
2000      - just a first cut:  numbers are meaningless on the cubesphere and
2001        missing along the T axis but otherwise it works!
2002    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
2003    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
2004    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
2005      this is based directly on what the model compute, so that the content of
2006      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
2007    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
2008    o clean up build options files for SunOS, in particular
2009      - remove -traditional from xmakedepend
2010      - change -xarch=v9 to -xarch=native for f77
2011      - restore use of make (not gmake)
2012      - add CC=gcc if using g77
2013    o changes per discussion of AM, JMC, & EH3 today:
2014      - move redundant "grid" variables out of "state" -- in preparation of
2015        creating proper CF-style coordinate variables and in recognition
2016        that any/all grid variables can be easily copied (eg. w/NCO) from
2017        the grid files into any of the other NetCDF files
2018      - *always* output grid variables with MDSIO (this will eventually be
2019        changed)
2020      - output MNC grid file if useMNC is true
2021    o every instance of _END_MASTER() has been found and replaced with
2022      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2023      preprocessors
2024    o re-arrange diagnostics pkg initialisation:
2025     - allow each package to extend the available diagnostics list
2026     - add some checking and fix small problems (multi-threaded, ...)
2027     - new S/R diagnostics_fill (replace fill_diagnostics):
2028       look through the short list of active diag. (instead of the long list)
2029       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2030    
2031    checkpoint57a_post
2032    o this set of changes restores TAMC compatibility
2033      tested for global_ocean.90x40x15 adjoint on trough
2034      (what a pain)
2035    
2036    checkpoint57a_pre
2037    o some modifs in tools/build_options for sunos
2038    o call ctrl_pack for ctrl at end for optimcycle=0
2039    
2040    checkpoint57
2041    o add horizontal bi-harmonic viscosity for vertical velocity
2042      - new parameter viscA4W (defaults to viscA4)
2043      - affects only non-hydrostatic code
2044      - to be done: no-slip lateral boundary conditions
2045    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2046    o implement Implicit Vertical advection for pTracers
2047    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2048      (implemented also for implicit vertical diffusion & advection)
2049    o OBCS: extend application of tracer open boundary conditions
2050      to a strip beyond the boundary of width Olx/Oly
2051    o add call monitor to TAF set of required calls (flow directives)
2052      and include in natl_box_adjoint
2053    o untangle a few ifdefs related to cost, ctrl, autodiff
2054      untangel a few ALLOW_ECCO_OPTIMIZATION
2055    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2056      (theta2, salt2 in ecco_cost_weights)
2057    
2058    checkpoint56c_post
2059    o OBCS as control variables
2060      - update ctrl_ad_diff.list, obcs_ad_diff.list
2061      - remove balance of obcs controls from default
2062      - fix index bug nobcs in ctrl_init
2063      - fix dummy fields filen in ctrl_pack
2064      - add dummy weights for obcs
2065    o lsopt: comment out fort.94 output
2066    o optim:
2067      - remove unnecessary header files
2068      - adjusted namelists
2069      - add xerbla.F to Makefile
2070    o exf:
2071      - multiple modifications of exf_check_range
2072      - unit change in exf_init_runoff from [m/year] to [m/s]
2073    o mdsio:
2074      - i/o-vector change debugLevel from debLevA to debLevB
2075    
2076    checkpoint56b_post
2077    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2078      is called from DO_THE_MODEL_IO
2079      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2080      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2081      - clean up PTRACERS_WRITE_TIMEAVE a little
2082    o add another verification experiment that tests both the cfc-pkg and
2083      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2084      reactive tendencies treated inline with regular timestepping
2085    o testreport previously did a lousy job of comparing small numbers, so
2086      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2087      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2088      testreport.
2089    o ptracers_monitor: bug fix for MPI
2090    
2091    checkpoint56a_post
2092    o GCHEM: finish reorganizating the package
2093      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2094        (introduces another 3D-array for each passive tracer, but only if
2095        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2096        gchemTendency is not needed because the timestep is done separately)
2097      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2098      - GCHEM is now---more or less cleanly---separate from PTRACERS
2099      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2100        so clear to me how that should be done in a general way.
2101    o CFC: improve formatting of output in CFC_ATMOS
2102    o PTRACERS:
2103      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2104        that ALL experiments with ptracers enable can be checked. This makes
2105        GCHEM_MONITOR obsolete.
2106      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2107        monitorFreq
2108      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2109    o add PTRACERS (PTR0[1-5]) to testreport output
2110    o exf_check_range:
2111      * default changed to .TRUE.
2112      * will check values for niter0 if debLevA, every timestep if debLevB
2113      * STOP in exf_check_range if 'out of range'
2114      * range chosen generous to allow for potential extema
2115      TBD: a version with stricter range
2116           permitted range would be runtime parameters
2117    o GMredi:
2118      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2119      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2120      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2121    o GCHEM:
2122      - move call to GCHEM_FORCING_SEP, so that it is now called before
2123        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2124      - introduced a useGCHEM runtime flag and applied it everywhere.
2125      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2126        this flag is now only visible within GCHEM-pkg routines.
2127      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2128        be replaced by a 3D array that is computed before thermodynamics; for
2129        this, the tracer ID iTracer had to be included into the parameter list
2130        of ptracers_forcing
2131      - set up forward_step to call gchem_forcing, that will replace
2132        gchem_forcing_int in ptracers_forcing
2133      - cleaning up
2134    o small cleaning of exch2: remove files that are also in eesupp/src
2135    
2136    checkpoint56
2137    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2138    o mnc: cleanup "full" files--fixes out-of-memory problem
2139    o ECCO-GODAE
2140      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2141      * fully merged and updated from SIO code
2142        windstress sign change affects
2143        - exf_inscal_[u/v]stress
2144        - sign of xx_tau[u/v] adjustments
2145        - signs in cost_scat
2146      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2147      * natl_box_adjoint updated and compressed
2148      * 2-level checkpoint switch added
2149        (tested in EXP. 1 of natl_box_adjoint)
2150      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2151    o SVD
2152      * first complete, non-hacked version for SVD calculations
2153      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2154        performed via direct access files admtlm_vector.it????
2155        (via ctrl_[un]pack)
2156      * optimcycle is used for ARPACK iteration counter
2157        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2158      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2159        and add linear transforms where necessary
2160      * controls are initial/final SST, SSS (can be extended; need to check
2161        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2162    o mdsio: filename info to both stderr, stdout
2163    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2164      from sign change
2165    
2166    checkpoint55j_post
2167    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2168      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2169    o add consistent build directories and .cvsignore files to verification
2170    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2171    o make all subroutines 30 or less characters in length for certain older
2172      compilers to work (a thorough search only turns up two routines in
2173      pkg/ptracers)
2174    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2175      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2176    
2177    checkpoint55i_post
2178    o change arrays for total vertical diffusivity (2.D if explicit,
2179      3.D if implicit) ; each ptracer uses its own background value.
2180    o added mnc/NetCDF output capability to ocn_compon_interf
2181      - added bits to verification/cpl_aim+ocn so that it can run on
2182        ITRDA and other clusters without the mpirun "-wd" option
2183    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2184      configuration
2185    o give MNC the ability to create additional files rather than
2186      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2187      - the default is just less than 2GB which is a practical limit
2188        on many systems
2189    o Compute the non-local term using either KPP vertical diffusivity (=default)
2190       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2191    
2192    checkpoint55h_post
2193    o add verification test "vermix"
2194    o remove all the *_ioinc flags and replace with the single global
2195      outputTypesInclusive flag
2196    o allow to set a vertical profile of vertical diffusivity for T & S
2197    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2198    o useMNC moved from data.mnc to data.pkg
2199    
2200    checkpoint55g_post
2201    o Renaming carbon AD experiments to comply with testreport conventions
2202    o Updating adjoint of Held-Suarez hs94.1x64x5
2203    o Fixing directives for non-ECCO forward_step, after ECCO directives
2204      have been fixed to avoid recomp. of do_oceanic_phys
2205      Works well for global_ocean.90x40x15,
2206      but recomp. issue remains for carbon
2207    o Updating adjoint output for natl_box_adjoint after
2208      pkg/ecco has been modified (see taga c55d_post)
2209    
2210    checkpoint55f_post
2211    o rename to timeave_init_fixed
2212    
2213    checkpoint55e_post
2214    o some delicate re-shuffle of store directives to avoid one
2215      extra call of do_oceanic_physics
2216      affects ecco_the_main_loop.F, do_oceanic_physics.F
2217      checkpoint_lev1_directives.h
2218    o NB: this may break global_ocean adjoint temporarily,
2219      but it is clear how to fix it. Will do later, need this now.
2220    
2221    checkpoint55d_post
2222    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2223    o ecco_cost_weights is modified to 1x1 runs
2224    o modifs to allow observations to be read in as
2225      single file or yearly files
2226    o enable to read exf forcing fields as either
2227      single file or yearly files (flag useExfYearlyFields)
2228    checkpoint55d_pre
2229    
2230    o switch between 2-level and 3-level checkpointing
2231    o add ability of MNC to write local and "partial" (eg. 2D slices where
2232      the full 3D field is never actually stored) arrays to NetCDF files
2233      with the correct (that is, the complete multi-dimensional) set of
2234      array indicies
2235      - used in mom_vecinv() to write the diagFreq output
2236      - tested (demonstrated) in verification/aim.5l_cs
2237    o further mnc-ification
2238      - add verification/lab_sea to the list with mnc setups
2239      - fix undefined mnc v-names in cd_code
2240      - add kpp to mnc output (both snapshot and timeave)
2241    o non-hydrostatic code
2242      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2243        in calc_gw.F
2244      - defaults to viscAh
2245      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2246        friction or Leith) in non-hydrostatic mode, as long as there is
2247        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2248    o pkg/cost
2249      extend simple cost functions to treat time mean quantities
2250      (T,U,V) via cost_accumulate_state from cost_tile
2251    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2252        be 2 times larger than the minimum size the advection scheme requires.
2253        now get a perfect conservation of salt in advect_cs test-exp (updated)
2254    o GGL90 (Gaspar's TKE mixed layer)
2255      - add horizontal diffusion of TKE, requires exchanges in
2256        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2257        default. In OPA there is no horizontal diffusion of TKE but the
2258        mixing coefficients are computed from a horizontal average of TKE of
2259        6 points or so. I think that diffusion has a little more physical
2260        justification.
2261      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2262        was in vain)
2263      - mask tke-variable in ggl90_init
2264    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2265    o fix biharmonic diffusion on CS-grid.
2266    o more obcs stuff
2267      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2268        for reading boundary values. This routine is called from
2269        obcs_prescribe_read
2270      - updated obcs_check
2271      - changed sponge layer relaxation parameter units for days to seconds
2272      - turned off sponge layer by default
2273      - changed argument list of OBCS_CALC to myTime+deltaTclock
2274      - fixed about 35 bugs in obcs_external_fields_load
2275    
2276    checkpoint55c_post
2277    o obcs stuff
2278      - new runtime flags useOBCSprescribe, useOBCSbalance
2279      - re-arranged obcs_calc
2280      - moved exf_getobcs to obcs_prescibe_read
2281        obcs_prescibe_read is called after ORLANSKI stuff
2282        and independent of it (executable can contain all).
2283      - updated obcs_check
2284      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2285        These may be necessary only if tangential velocities are
2286        prescribed at OB, not sure, needs testing.
2287    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2288      which simplifies the calls and passes the ifc check-bounds test
2289    
2290    checkpoint55b_post
2291    o add a 2D scalar, Z location, exchange_2 routine.
2292    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2293      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2294      affects advect_cs results (for the wrong reason): update output.txt
2295    o use a more standard discretization for biharmonic viscosity ;
2296     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2297      affects results of dome set-up: update output.txt
2298    o fix gad_advection.F (CubedSphere part), back to version 1.23
2299    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2300    
2301    checkpoint55a_post
2302    o merged code to
2303      * prescribe/read time-dependent open boundaries
2304        (works in conjunction with exf, cal)
2305      * sponge layer code for open boundaries
2306      * each boundary N/S/E/W now has its own CPP option
2307        (healthy for the adjoint)
2308    
2309    checkpoint55
2310    o up-to-date adjoint of previous breaks
2311      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2312      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2313      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2314      - carbon: * remove tr1-related adjoint verification
2315                * add ptracer as control variable
2316    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2317      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2318    
2319    checkpoint54f_post
2320    o in verification/carbin/ remove experiment related to
2321      ALLOW_PASSIVE_TRACER (array tr1 etc)
2322      code_ad/ input_ad/ results_ad
2323    
2324    o add two new packages
2325      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2326        + subject to optimization (memory)
2327      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2328        + subject to reordering (many GOTOs in the original code)
2329        + so far opps is called for every (i,j) point, and then operates in
2330          the vertical; one may want to reorder the scheme in order operate in
2331          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2332          fields)
2333    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2334      - all verification tests compile and run with linux_ia32_g77
2335      - defaults are compatible with current input files--nothing
2336        should change if you were not previously using MNC
2337      - MNC output has been added in numerous places (eg. timeave)
2338        but there are still a few writes not yet do-able with MNC
2339        (this is in progress)
2340      - flags now allow for either/or/both use of MDSIO and MNC and
2341        documentation will soon follow
2342      - numerous small formatting cleanups for ProTeX
2343    o add version info (via BUILD_INFO.h) to MNC and stdout
2344    
2345    checkpoint54e_post
2346    o add two new packages
2347      - pp81 (Packanowski and Philander, 1981), Richardson number and
2348        stratification dependent mixing
2349      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2350      - these scheme operate in a similar manner as KPP (without ghat, of
2351        course), however there is only one diffusivity that is used for both
2352        temperature and salinity (and passive tracers)ç
2353    o add offline package
2354    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2355      provided by Stephanie Dutkiewicz
2356    o genmake2: add ability to search for C compilers and cleanup test output
2357      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2358    
2359    checkpoint54d_post
2360    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2361    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2362      leading to additional shift by 5 days each year of integration
2363       (i.e. leading to considerable offset over the years)
2364    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2365    o start with no AB and no initial filtering (staggerTimeStep):
2366      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2367    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2368      (external loading & cpl import/export stay in forward_step.F)
2369    o update coupling interface to work with new staggerTimeStep
2370    o change MDSIO ptracers_pickup.
2371    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2372    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2373    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2374    
2375    checkpoint54c_post
2376    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2377      this affects (truncation error) output.txt of test-exp:
2378       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2379    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2380    o change Qnet to always be the net heat flux, (+upward).
2381      affects (truncation error) output of natl_box exp.: updated
2382    o define the max number of passive tracers in PTRACERS_SIZE.h
2383    o start to test mnc routinely in exp0
2384    o add sea-ice loading (sIceLoad) as a new forcing field.
2385    
2386    checkpoint54b_post
2387    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2388       impressive on Altix and Opteron systems)
2389    o diagnostics can now write NetCDF files through the mnc package
2390    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2391    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2392    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2393      affects (truncation error) output of lab_sea & natl_box exp.: updated
2394    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2395    
2396    checkpoint54a_post
2397    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2398    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2399    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2400    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2401      + internal_wave (shift in writing cg2d_ini_res)
2402    checkpoint54a_pre
2403    
2404    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2405      - modified verification/lab_sea and natl_box_adjoint accordingly
2406    
2407    checkpoint54
2408    checkpoint53g_post
2409    o prepare splitting of thermodynamics: store convect.counter in common block
2410    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2411      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2412    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2413    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2414    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2415    o restore adjointability
2416    
2417    checkpoint53f_post
2418    o modifications that affect AIM experiment results (update output.txt):
2419      - no advection of S at top interface Nr (pkg/generic_advdiff)
2420      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2421    o AIM pkg:
2422      - include stability function into surf.Flux derivative relative to Tsurf
2423      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2424    
2425    checkpoint53e_post
2426    o merged cylindrical coord configuration
2427    o added rotating_tank experiment
2428    checkpoint53e_pre
2429    
2430    checkpoint53d_post
2431    o faulks upgraded: re-generate output.txt that have changed:
2432       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2433    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2434    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2435    o added Sadourny discretization of Coriolis
2436      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2437      - re-enabled use of omega3 (useAbsVorticity)
2438    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2439      vector-invariant equations
2440      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2441    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2442      hopefully without new bugs
2443      - still to do: biharmonic friction for non-hydrostatic w
2444    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2445    o regenerated output for global_ocean_ebm (using -ieee)
2446    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2447      of mom_common/
2448      - simple re-arrangement of instructions within computing loop
2449    checkpoint53d_pre
2450    
2451    checkpoint53c_post
2452    o new version of coupler for AIM+thSIce and Ocean models
2453     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2454     - land: change Evaporation of snow
2455     - aim with thSIce: fix bug in snow-precip.
2456    o changes to calc_gw.F
2457     - bug fix for w^2 term near the bottom boundary
2458     - (hopefully) improve the lateral slip boundary condtions for use with
2459        partial/looped cells
2460      - because the bug fix changes two verification experiments anyway (exp5
2461        and plume on slope), change the lateral boundary condition from half slip
2462        to the value of no_slip_sides
2463    o ebm package wasnt quite up to the parallel task. Fixed that.
2464    o Adjoint of EBM package + verification
2465      * TLM OK
2466      * ADM not sufficient accuracy yet (needs further testing)
2467    
2468    checkpoint53b_post
2469    o Commiting new energy balance model to repository
2470      * package is pkg/ebm
2471      * verif. is verification/global_ocean_ebm
2472      * references are in ebm_driver.F
2473    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2474    C        Global thermohaline circulation. Part I:
2475    C        Sensitivity to atmospheric moisture transport.
2476    C        J. Climate 12(1), 71-82
2477    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2478    C        Global thermohaline circulation. Part II:
2479    C        Sensitivity with interactive transport.
2480    C        J. Climate 12(1), 83-91
2481    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2482    C        Destabilization of the thermohaline circulation
2483    C        by atmospheric eddy transports.
2484    C        J. Climate 7(12), 1870-1882
2485    o Will need long integration testing.
2486    checkpoint53b_pre
2487    
2488    o created pkg/mom_common in preparation for variable viscosity code
2489    o renamed and split ini_mnc_io
2490    o pkg/land: only liquid water can diffuse or run-off
2491    o AIM using land: soil wetness availability account for snow
2492    o added printMapIncludesZeros to EEPARMS namelist
2493    
2494    checkpoint53a_post
2495    o restore TAMC compatiility for exf_constants.h
2496      (no usage of _d in .h)
2497    o Additional storing in KPP in an attempt to fix
2498      TAMC problem with adjoint of KPP code.
2499      (no success...)
2500      Identical code works fine with TAF.
2501    o Fixed verification/natl_box_adjoint experiments.
2502      Initial conditions for Experiments 4 and 5 are now
2503      set to "SEAICE_initialHEFF=0", which is more reasonable,
2504      and hence gives results closer to that of Experiment 2.
2505      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2506    
2507    checkpoint53
2508    o stable checkpoint with up to date adjoint
2509      TLM tests only run for 1st grdchk at the moment. Its unclear if
2510      this is a code problem or a problem with resetting code for g_
2511      variables that is being autogenerated wrong.
2512      Otherwise:
2513       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2514       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2515         are both still in chaos following their security messes.
2516    
2517    checkpoint52n_post
2518    o various build (mostly genmake2) changes including:
2519      - ability to build/run more easily within Cygwin and MacOS X
2520      - more complicated Makefiles with a stronger dependence on Gnu Make
2521    o pkg/seaice modifications
2522      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2523        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2524        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2525      - changed proxy for geostrophic velocity and updated
2526        verification/lab_sea/results/* accordingly
2527      - removed ADI dynamic solver from pkg/seaice
2528      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2529        they caused a segmentation fault under certain circumstances
2530      - removed unused field WATR
2531    o bug fix in exf-package:
2532      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2533         now reflect that.
2534    o small fixes in the cal-package:
2535      - set reference date to first of January for the 'model'-calendar
2536      - failing of cal_CheckDate in cal_FullDate now actually results in a
2537        warning
2538    o small modifications in exf-package to increase flexibility:
2539      - change climtempfreeze from a constant to a runtime parameter that
2540        is specified in data.exf_clim (default = -1.9)
2541      - introduce runtime parameter windstressmax (default = 2.0) that is
2542        specified in data.exf
2543    o fix in pkg/thsice:
2544      - update Evap (Tsf changes) to be consistent with Latent heat flux
2545      - maintain snow precipitation unchanged (even if Tsf >=0).
2546     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2547    
2548    checkpoint52m_post
2549    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2550      this does not change any of the results, because myIter=0 in swfrac always
2551      lead to jwtype=2 (the default anyway), but the call makes little sense
2552      as a default
2553    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2554    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2555      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2556    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2557    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2558    o extending useSingleCpuIO option to work with new exch2 I/O format
2559      - old-style, missing-tile I/O is still accessible by defining CPP
2560        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2561    o monitor package can write to NetCDF files and/or STDOUT
2562    o fix re-definition bug in MNC_GRID_INIT_ALL()
2563    o doc/api_reference added
2564      - a framework for building an API Reference Manual using all
2565        the "protex" comments embedded in the code
2566      - see pkg/generic_advdiff, pkg/mnc for examples
2567    o MNC:
2568      - make myThid the last argument for all subroutines
2569      - new default for the grid files: NO halos
2570      - add useMNC and other run-time flags
2571      - separate per-file-group handling of the unlimited dimension
2572      - early initialization of MNC w/ flags read at the eeboot stage
2573        and lookup tables set in initialize_fixed
2574      - write all MNC output to a freshly-created directory
2575    o thermodynamics sea-ice (thsice) is now tested with testreport.
2576    o test exp. advect_cs: use the standard cs32 grid ; update output.
2577    o Added functionality to grdchk:
2578      pick global i,j,k position (or nearest wet) where to perform check.
2579    
2580    checkpoint52l_post
2581    o new land formulation:
2582      a) use ground enthalpy as prognostic variable to ensure exact
2583         energy conservation.
2584      b) account for water temperature and for latent heat of freezing
2585         in all processes (rain, run-off, ground storage)
2586      c) compute surface and ground temperature implicitly.
2587    o aim_v23 modification for new land model:
2588      a) Treat separately land / ocean / sea-ice surface fluxes
2589         to allow implicit computation of land & sea-ice surface temp.
2590      b) add snow precipitation.
2591    checkpoint52l_pre
2592    
2593    o fix problem (when 1 tile is empty) in min/max monitor.
2594    o fix bug in timeAve (u,vZetatave in common block)
2595    o no restoring terms under ice for pkg/seaice
2596    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2597    o bug fix for pkg/seaice pickups
2598    o change MNC call locations and add coordinate attributes
2599    o mask vorticity at the corner ; affects global_ocean.cs output
2600    o fix ini_curvilinear_grid ; test CS experiments with mpi
2601    o aim.5l_cs: modify sea-ice fraction input file ; update output
2602    o exf: Adding simple range check routine for exf fields after read
2603    
2604    checkpoint52k_post
2605    o removed top-level directory "diags"
2606      - we migrated these functions to pkg/timeave a long time ago
2607    o fixed bug introduced in pkg/monitor
2608    o accuracy ctrlprec = 32 insuffient for gradient checks using
2609      averaged fields (I/O via cost_averages)
2610      -> use ctrl.h in active_file*.F to control I/O precision.
2611    o paramter list of CALL ADTHE_MAIN_LOOP
2612    o added initial do_the_model_io to ecco
2613    o set all ...Freq to zero after cost_final
2614      taveFreq, dumpFreq, pChkptFreq
2615    o MAIN and ECCO differentiability restored
2616    
2617    checkpoint52j_post
2618    o fix nchklev in tamc.h for global_ocean...
2619    o Bringing flow and store directives up-to-date
2620    o Really weird thing!
2621      call do_the_model_io from the_main_loop with parameters
2622      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2623      TAF places a faulty re-call of initialise_varia
2624      after cost_final call which should not be there!
2625    checkpoint52j_pre
2626    
2627    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2628      error messages
2629    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2630    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2631      debug output
2632    o modfied mdsio_writefield.F to handle non-global files under exch2
2633    o update AIM Cubed-Sphere exp (aim.5l_cs):
2634      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2635    o update AIM Equatorial Channel exp:
2636      use standard aim_v23 pkg and change the SST fields to be more realistic.
2637    o globalFile now works with exch2
2638    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2639      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2640    o limit timeave output for hi-res integrations
2641    
2642    checkpoint52i_post
2643    o removed CPP_EEOPTIONS.h from verification/*/code
2644    o updated the tiling for global_ocean_pressure
2645    checkpoint52i_pre
2646    
2647    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2648      the old pkg/aim).
2649    
2650    checkpoint52h_pre
2651    o shortened offending lines in exch2_send_rx?.template
2652    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2653    o genmake2: add build & execute test for NetCDF code
2654    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2655      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2656    o added useSingleCPUIO flag to monitor.F and mon_out.F
2657    o added temporary hack for sea-ice dynamics on the cube:
2658      metric terms are ignored and it is assumed that
2659      there is no sea-ice on cube faces 1, 2, 4, and 5.
2660    
2661    checkpoint52f_post
2662    o added exch2 cube routines to pkg/exch2
2663    o modified hs94.cs-32x32x5 to use it
2664    o added new grid files to hs94.cs-32x32x5
2665    checkpoint52f_pre
2666    
2667    checkpoint52e_post
2668    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2669      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2670    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2671      to work with implicit vertical advection and AB ;
2672    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2673    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2674     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2675    checkpoint52e_pre
2676    
2677    o fix bug in impldiff when Nr=1 or Nr=2.
2678    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2679    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2680    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2681      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2682    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2683    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2684    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2685    
2686    checkpoint52d_post
2687    o re-tiled many expts to allow comparison in multi-processor mode
2688      - updated output accordingly
2689      - changed hs94.128x64x5 to use intial T from file rather than use the
2690        random number generator
2691    o add infrastructure in model routines for fizhi and gridalt packages
2692    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2693    o changes to permit hi-res, cubed-sphere, configuration
2694      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2695      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2696      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2697        of surface winds for the cube
2698      (A verification experiment, based on global_ocean.cs32x15, but with
2699       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2700       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2701       complete with example surface forcing files and matlab scripts to look
2702       at the output and compare it with that of global_ocean.cs32x15.)
2703    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2704       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2705       to conform to the common rule.
2706    o check-in the first version of the coupler + interfaces for multi-components
2707       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2708       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2709       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2710       - ocean and atmos. share the same horizontal grid (no interpolation).
2711       - exchanges between component and coupler is done in forward_step
2712    o new verification experiment, cpl_aim+ocn:
2713       coupled ocean - AIM atmosphere on cs32 grid.
2714    
2715    checkpoint52d_pre
2716    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2717    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2718    
2719    checkpoint52c_post
2720    o Fixing OPTIONS files for use of exf:
2721      - ALLOW_ECCO not needed
2722      - ECCO_CPPOPTIONS.h should not be included from
2723        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2724        as has been the case in the past
2725      - All cal/exf related options are currently set in
2726        single header file. Should remain so until we
2727        agree on a consistent new policy.
2728    o Removed all CPP options for cal package.
2729      cal has no more CPP options.
2730    o modified STOREs in GAD_ADVECTION
2731    o corrected key comp. for passkey
2732    
2733    checkpoint52b_post
2734    o new version: "thsice" of thermodynamic sea-ice pkg:
2735     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2736     - modify fluxes but do not change theta directly;
2737     - light cleaning of bulk_force pkg (still needed with thsice).
2738     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2739       + output_thsice.txt to test thsice & bulk_force pkgs.
2740    o put back grid & coriolis monitor output.
2741    checkpoint52b_pre
2742    
2743    o call "do_the_model_io" at the beginning (=> dump initial state)
2744    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2745    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2746      (need info on NUMBER_OF_PTRACERS)
2747    o missing PTRACERS headers in some routines
2748    o default tamc.h in pkg/autodiff supposed to crash
2749      to ensure proper customization
2750    
2751    checkpoint52a_post
2752    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2753      - moved surfaceTendencyTice from pkg/seaice to main code
2754      - subroutine FREEZE_SURFACE now limits only surface temperature
2755        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2756        => new output.txt for global_ocean.cs32x15 & global_with_exf
2757      - keep the old version of FREEZE for backward compatibility;
2758        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2759      - corresponding modifs for TAF directives
2760    o added surface flux output variables to TIMEAVE_STATVARS
2761    o time-averaged output for pkg/ptracers
2762    o fix problem with ECCO-related divided adjoint
2763      snapshot file was missing some ad-variables,
2764      but no warning issued by TAF
2765    
2766    checkpoint52a_pre
2767    o some bug fixes for #undef REAL4_IS_SLOW
2768    
2769    checkpoint52 = ecco_c52_e35
2770    o after testing adjoints of checkpoint51u_post
2771    
2772    checkpoint51u_post
2773    o this is the post-merge tag of the ecco-branch
2774      (needs another clean checkout and re-testing)
2775    o various natl_box_adjoint configs and results
2776      but no input fields
2777    o obcs adjoint not yet merged!
2778    o adding ECCO global 1x1 and 2x2 degree configs
2779    o updated/extended some store directives for seaice
2780    o pkg/ecco now containes ecco-specific part of cost function
2781    o top level routines the_main_loop, forward_step
2782      supersede those in model/src/
2783      previous input data.cost now in data.ecco
2784      (new namelist ecco_cost_nml)
2785    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2786    
2787    checkpoint51t_post
2788    o this is the pre-merge tag of the ecco-branch
2789    
2790    checkpoint51s_post
2791    o cleanup: removed various obsolete #define-s
2792    o pkg/grdchk
2793      - renamed 'ph-grd 3' to 'grad-res'
2794      - merged from ecco-branch
2795        (remaining bug fixes for obcs gradient checks)
2796      - additional high-precision output for testreport
2797        (grep for 'precision_grdchk_result')
2798    
2799    checkpoint51r_post
2800    o cleaned up or removed CPP_OPTIONS.h files
2801    o updated results for some of the tests to reflect the new
2802      optfiles (-ieee: -O0 instead of -O3)
2803    
2804    checkpoint51q_post
2805    o cd_code:
2806      - moved cd_scheme.F -> cd_code_scheme.F
2807      - separate read_checkpoint from cd_code_ini_vars.F
2808      - separated cd_code part from write_checkpoint
2809      - updated AD_SOURCE, generated .flow
2810      - added CD_CODE_VARS.h to the_main_loop
2811      - Moving cd_code specific store dir.s to pkg/cd_code
2812    o ctrl package totally restructured
2813      - pack/unpack now optional and decoupled from
2814        xx_/adxx_ I/O
2815      - ctrl_pack/unpack cleaned
2816        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2817      - confined inclusion of AD_CONFIG.h to where necessary.
2818    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2819    
2820    checkpoint51p_post
2821    o create initial cd_code package
2822      - WARNING: the initialization of fields within packages
2823        is broken because INI_FIELDS (where READ_CHECKPOINT is
2824        called) is called *before* PACKAGES_INIT_VARIABLES.
2825        This seems to be backwards since
2826        1) its important to initially zero the entire field including
2827           the "halo" region
2828        2) zeroing needs to be done *before* reading pickup info
2829           and the pickup call might or might not happen in any
2830           particular run
2831      - this needs an overhaul for R2
2832    o cleanup verification/*/code/GMREDI_OPTIONS.h
2833    o cleanup testreport
2834    
2835    checkpoint51o_post
2836    o bringing AD-related verif's up to date with genmake2
2837      - carbon/
2838      - global_ocean.90x40x15/
2839      - hs.94.1x64x5/
2840      - (front_relax/ )
2841    o (more) consistent directory structure for AD-related verif.'s
2842    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2843    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2844    o bug fix in find_alpha.F for MDJWF:
2845      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2846        change rho -> rho-rhoConst
2847      - replace call find_rho to find_rhonum
2848    o initialisation of rFlx extended to full array (required by TAF)
2849      and shifted to thermodynamics
2850    o removed PTRACERS.h in ptracers routine
2851    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2852    o Correcting initialisations for fVerU, fVerV.
2853    o helping TAF to recognize dependency on kUp for
2854      fVerU, fVerV
2855    o Replacing delZ by delR in pkg/ctrl/
2856    checkpoint51o_pre
2857    
2858    o undid all of cp51 pending some cleanups and discussion
2859    o added the [#include "AD_CONFIG.h"] statement to all files that need
2860       it for adjoint/tl #defines
2861     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2862     o removed tools/genmake since it no longer works
2863    
2864    checkpoint51n_post
2865    o modifications to make FREEZE flux visible to pkg/kpp
2866      - moved surfaceTendencyTice from pkg/seaice to main code
2867      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2868      - subroutine FREEZE now limits only surface temperature
2869        (this means new output.txt for global_ocean.90x40x15,
2870         global_ocean.cs32x15, and global_with_exf)
2871    o added surface flux output variables to TIMEAVE_STATVARS
2872    
2873    checkpoint51n_pre
2874    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2875    o added [#include "AD_CONFIG.h"] to all files that use the following
2876      defines:
2877      - ALLOW_ADJOINT_RUN
2878      - ALLOW_TANGENTLINEAR_RUN
2879      - ALLOW_ECCO_OPTIMIZATION
2880    
2881    checkpoint51m_post
2882    o incorporating changes to get TAMC/TAF working in genmake2
2883      - added new TAMC/TAF targets to the Makefile
2884      - various cleanups related to package handling
2885      - these changes should have no impact on the forward model
2886    
2887    checkpoint51l_post
2888    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2889     - faster algorithm for cal_addtime.F
2890     - higher precision arithmetic, where needed
2891     - pkg/exf *startdate variables changed from calendar date to
2892       model integration time
2893    
2894    checkpoint51l_pre
2895    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2896    o enable to apply restoring on S & T only in a latitude band.
2897    o update output (external_forcing_surf modif. change truncation errors)
2898       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2899    
2900    checkpoint51k_post
2901    o change default to: useNHMTerms=.FALSE.
2902     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2903       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2904     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2905        exp1, ideal_2D_oce
2906     - change data file of oceanic exp (leave the results unchanged for now)
2907       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2908    o set gravitySign automatically according to the vertical coordinate used
2909      (and change sign: back to "logical" value: +1 when R increases downward)
2910    o added an include barrier to the default CPP_OPTIONS.h and
2911      removed the #include "PACKAGES_CONFIG.h" from it
2912    o fix a bug in mom_fluxform (from chk51j_post)
2913    
2914    checkpoint51j_post
2915    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2916    o adjusted some flow directives (dynamics, thermodynamics)
2917    o added cubed-sphere case to test cost function
2918    o heckpoint_lev?_directives.h now include
2919      pkg-specific directives, whenever those are enabled.
2920    o Moving pkg-specific flow directives to corresponding pkg
2921      Moving pkg-specific differentiation list to corresponding pkg
2922      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2923      ---> conventions are
2924           - pkg_ad.flow
2925           - pkg_ad_diff.list
2926           - pkg_ad_check_lev?_dir.h
2927    
2928    checkpoint51i_post
2929    o merge of the branch-genmake2
2930      - knowingly breaks the older genmake
2931      - automatic generation of all ALLOW_${PKG_NAME} defines
2932      - new testreport supersedes older testscript
2933    o large number of package inclusion and header cleanups
2934    checkpoint51i_pre
2935    
2936    o new output for adjoin of global ocean vector invariant
2937    o fix for checkpoint of thermodynamic seaice and bulk_force
2938    o Steph gchem various cleanups
2939    
2940    checkpoint 51h_pre
2941    o fixed some single quotes
2942    o modify gchem pkg to be more versatile
2943    o modifications to clean up dic pkg
2944    o add pkg/cfc
2945    
2946    checkpoint51g_post
2947    o provide links for ARPACK and ADM*TLM
2948    o start removing verification/vero/
2949    o update AD-related stuff
2950      (in particular some IF-statements in model/src/ routines)
2951    o adding to verification/global_ocean.90x40x15/ adjoint of
2952      vector invariant setup
2953    
2954    checkpoint51f_post
2955    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2956    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2957      of tracer Green's fucntions for ocean inversion project.
2958    
2959    checkpoint51f_pre
2960    o Added on-the-fly spatial interpolation capability
2961        "USE_EXF_INTERPOLATION" to pkg/exf.
2962      - This is a temporary Cartesian-grid hack until
2963        the super-duper ESMF coupler becomes available.
2964      - See verification/global_with_exf/README for usage example.
2965      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2966        flags and modified pkg/seaice accordingly.
2967    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2968        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2969        non-local transport term.
2970    
2971    checkpoint51e_post
2972    o pkg/mom_vecinv:
2973      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2974      - add time-ave diagnostic of vorticity advection.
2975    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2976    o atmospheric geopotential: - include water vapor effect;
2977                                - use p^kappa in p* scaling.
2978    o land pkg: read initial state from files.
2979    o AIM : add stratospheric drag in the upper level
2980    
2981    checkpoint51d_post
2982    o change function ILNBLNK (=> last non-blank char.) to return zero
2983      (instead of the string length) when the string. char is empty
2984    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2985    o modif's to restore TAMC compatibility
2986      - avoid "_d" constructs in PARAMETER declarations
2987      - avoid interrupting lines by comment lines
2988    o Use cluster local disks for purely local I/O
2989      vs. globally visible disks needed for ctrl stuff
2990      (merged from ecco-branch)
2991      - new active_file_loc... and mdsio_..._loc routines
2992      - affected packages: autodiff, ctrl, grdchk, mdsio
2993    
2994    checkpoint51c_post
2995    o introducing integer flag debugLevel
2996      - debLevZero: suppress all output
2997      - debLevA: standard
2998      - debLevB: equivalent to current debugMode=.TRUE.
2999    o introducing pathname variable mdsioLocalDir for mdsio
3000      that can be specified at runtime
3001      (relevant for cluster I/O to local disk)
3002    `
3003    >>>checkpoint51b_post
3004    adjoint of ptracers
3005    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
3006    o extended state in checkpoint_lev?, etc.
3007    o alternative ctrl/cost with tr1 or ptracer
3008    o new comlev1_bibj_ptracers
3009    o new ptracers.flow
3010    o made ptracers_forcing same as external_forcing_s
3011    o added verification for adjoint with ptracers
3012      - adm. grdchk fail so far
3013      - tlm. grdchk OK
3014      - checked tapelev/comlev recomputations: OK
3015    <<<checkpoint51b_pre
3016    
3017    checkpoint51a_post
3018    o added code for biogeochemistry package
3019      - new pkgs: dic, gchem
3020      - new subroutine in ptracers
3021    o modify code for biogeo packages
3022      - in model/src and pkg/ptracers
3023    
3024    checkpoint51
3025    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
3026      - autodiff, ctrl, exf, grdchk, seaice
3027      kept separate packages
3028      - cost, ecco, obcs
3029    o updating verification/internal_wave, verification/lab_sea
3030      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
3031    
3032    checkpoint50i_post
3033    o Preparing next differentiable checkpoint and sync
3034      of MAIN vs. ecco-branch
3035      - 1st step: this one is differentiable
3036      - 2nd step: next(! not this) checkpoint will have updated packages
3037                  from ecco-branch)
3038    
3039    checkpoint50h_post
3040    o new package "land": provide surface BC for AIM.
3041    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
3042    o AIM: use true log-P extrapolation for near surface temp (= as in
3043        F.Molteni paper) ; update aim.5l_cs output.
3044    o New variable in PARM03 for more flexible pickups
3045    o somewhat cleaned package initialisation sequence for
3046      ctrl/ cost/ ecco/ in packages_... routines
3047    
3048    checkpoint50g_post
3049    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
3050      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
3051      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
3052        made the default because of faster convergence than ADI
3053    
3054    checkpoint50f_post
3055    o exf totally restructured
3056      - replaced all exf_set_ routines by one generic exf_set_gen.F
3057        and made sure it's still differentiable
3058      - split exf_getffields.F into new exf_bulkformulae.F
3059      - exf_inscal_/exf_outscal_ suffixes consistent with field names
3060      - updated adjoint/makefile and relevant verif. accordingly
3061    
3062    checkpoint50f_pre
3063     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
3064          + change Evap over land. (update aim.5l_cs output)
3065     o added missing .cvsignores and made uniform across expts
3066     o changed configuration of tidal_basin_2d expt
3067     o added pkg/debug functions for tracing code in fatal crashes
3068     o tidied pkg/monitor to use MONITOR_OPTIONS.h
3069     o new fn in pkg/monitor to stop model if solution grows too big
3070     o removed lots of single quotes from comments
3071    
3072    checkpoint50e_post
3073    o make KPP work with PTRACERS
3074     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
3075       nearly a copy of kpp_transport_s
3076     - there is no analogue to SurfaceTendencyS, so I have to use
3077       gPtr(of the surface layer) instead
3078    o add a new platform SunFire+mpi (SunFire 15000) to genmake
3079    checkpoint50e_pre
3080    
3081    checkpoint50d_post
3082    o change kpp output from multiple-record state files to single-record state
3083      files analogous to write_state.F
3084    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
3085      analogous to the cg2d-related output.
3086    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
3087      so that writing to internal file fn (with length 512) fails.
3088    checkpoint50d_pre
3089    
3090    checkpoint50c_post
3091    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
3092    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
3093    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
3094    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
3095    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
3096    
3097    checkpoint50c_pre
3098    Merging from release1_p13:
3099    o bug fix for pkg/seaice dynamic solver
3100    o Added SEAICE_initialHEFF to pkg/seaice
3101    
3102    checkpoint50b_post
3103    o store u*,v* in gU,V instead of in guNm1,gvNm1
3104    o in order to put the momForcing out of the Adams-Bashforth:
3105      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
3106      to timestep.F
3107    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
3108    o re-generate output for highly sensitive test-exp:
3109       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
3110    
3111    checkpoint50b_pre
3112    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
3113    o corrected CPP option mismatch in exf_Bulk... functions for case
3114      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
3115    
3116    checkpoint50a_post
3117    o Bug fix for merging between c50 and KPP.
3118      ikey was passed from thermodynamics to kpp_calc via
3119      common block rather than being recomputed in kpp_calc,
3120      in contradiction with new key itdkey.
3121      New key ikppkey created, and tamc.h headers updated.
3122    
3123    checkpoint50
3124    - 2nd step of merge with ecco-branch:
3125      merge changes in ecco-branch back into main trunk
3126    - bug fix in find_alpha
3127    - more storing in gmredi_calc_tensor.F, kpp_routines.F
3128    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
3129    - merged some sliced AD support routines
3130    
3131    checkpoint49
3132    merged from ecco-branch:
3133    o exf:
3134      - Enable initialisation of forcing fields to constant
3135        (runtime) values.
3136      - in exf_getffields.F
3137        Reduce i-/j-loop to interior domain, discarding overlaps.
3138        That also fixes wrong TAF-key computations for key_1, key_2
3139        with bulf formulae.
3140      - exf_init.F modify #ifdef for exf_init_evap
3141      - exf_getffieldrec.F, ctrl_getrec.F
3142        The following INT-usages are not safe:
3143          fldsecs  = int(fldsecs/fldperiod)*fldperiod
3144          fldcount = int(fldsecs/fldperiod) + 1
3145        and were modified.
3146    o autodiff: checkpoint_lev...
3147      - updated storing for bulk formulae (some arrays were missing)
3148      - added state for seaice package
3149      - synchronized with main branch
3150    o DIVA:
3151      Modif.s in
3152      - the_main_loop.F
3153      - the_model_main.F
3154      and added cost_final_restore.F cost_final_store.F
3155      o With these changes, it is possible to fully separate
3156        the first forward run to compute the cost function (mdthe_main_loop)
3157        and adjoint runs over individual DIVA intervals (adthe_main_loop)
3158        into separate model executions.
3159        This enables better tuning of DIVA to given queue sizes.
3160      o Loss of cost function value in consecutive DIVA runs is
3161        fixed by storing to 'costfinal' file.
3162      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
3163        beginning/end of adjoint integration is accounted for.
3164      The current changes apply to TAF-1.4.26.
3165      TAF has one remaining bug, requiring one manual change
3166      (see MITgcm manual).
3167    o cal: synchronized between MAIN and ecco-branch
3168    
3169    checkpoint48i_post
3170    o Changes to restore differentiability of code w.r.t. previous tag
3171      (mostly adding new routines to make list and replacing
3172      pressure by totPhiHyd).
3173    o Updated and merged grdchk package
3174      - has both ADM and TLM checks
3175      - works for single- and multi-proc.
3176      - output cleaned
3177      - worked successfully for parallel DIVA
3178    o genmake:
3179      - Adding -platform=SP4
3180      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
3181    o Modif. for DIVA:
3182      ctrl_unpack should not be called in intermediate DIVA interval.
3183      (similar thing would apply for active files such as
3184      tbar, sbar, psbar, which should not be reinitialised;
3185      only relevant for ecco-branch)
3186    
3187    checkpoint48h_post
3188    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
3189    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
3190    o Added SEAICE_initialHEFF to pkg/seaice
3191    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
3192    
3193    checkpoint48g_post
3194    --- EOS:
3195    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
3196      store total Potential in totPhyHyd for diagnostics & EOS.
3197    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
3198    --- Pressure/geopotential gradient:
3199    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
3200    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
3201      ( changes results of global_ocean_pressure )
3202    o NLFS + z-coord.: add eta*Rho' contribution.
3203    o accurate phiHyd when using interface-W at the middle between 2 centers
3204     ( changes results of ideal_2D_oce )
3205    o includes r* 2nd term in potential gradient.
3206    
3207    checkpoint48f_post
3208    Merging from release1_p12:
3209    o Modifications for using pkg/exf with pkg/seaice
3210      - improved description of the various forcing configurations
3211      - added basic radiation bulk formulae to pkg/exf
3212      - units/sign fix for evap computation in exf_getffields.F
3213      - updated verification/global_with_exf/results/output.txt
3214    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
3215      (SBO) core products, including oceanic mass, center-of-mass,
3216      angular, and bottom pressure (see pkg/sbo/README.sbo).
3217    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
3218      to avoid negative values in shallow regions.
3219      - updated verification/natl_box/results/output.txt
3220      - updated verification/lab_sea/results/output.txt
3221    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
3222    o Added useSingleCpuIO option (see PARAMS.h).
3223    o Updated useSingleCpuIO option in mdsio_writefield.F to
3224      work with multi-field files, e.g., for single-file pickup.
3225    o pkg/seaice:
3226      - bug fix in growth.F: QNET for no shortwave case
3227      - added HeffFile for specifying initial sea-ice thickness
3228      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
3229    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
3230      kpp_transport_t.F, forward_step.F, and the_main_loop.F
3231    o pkg/seaice:
3232      - adjoint-friendly modifications
3233      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
3234    
3235    checkpoint48e_post
3236    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
3237    o dynamics: change definition of computational domain & adapt mom_fluxform
3238      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
3239    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
3240        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
3241        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
3242        global_ocean.90x40x15 global_with_exf global_ocean_pressure
3243        inverted_barometer solid-body.cs-32x32x1
3244      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
3245    
3246    checkpoint48d_post
3247    o in preparation for r*:
3248     a) use pre-computed gradient of hydrostatic potential:
3249        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
3250     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
3251        => affects results of glob_oce_pressure (different truncation error)  
3252      update output.txt of ideal_2D_oce & global_ocean_pressure
3253    
3254    checkpoint48d_pre
3255    o in preparation for r*:
3256      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
3257      pass the 2 comp. of the grad. as arguments to momentum S/R.
3258      but for the moment, only used if it does not change the results.
3259    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
3260    
3261    checkpoint48c_post
3262    Modifications in treatment of initial flux forcing controls
3263    to avoid extra storing of flux fields.
3264    
3265    checkpoint48c_pre
3266  o Added tidal_basin_2d experiment (currently 1D!)  o Added tidal_basin_2d experiment (currently 1D!)
3267  o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)  o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3268    

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