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revision 1.589 by jmc, Thu Dec 8 22:25:07 2005 UTC revision 1.1067 by heimbach, Fri Feb 13 22:05:20 2009 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o autodiff
8      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
9      allows to switch to single-prec common blocks;
10      corresponding switch occurs in tamc.h, integer isbyte
11      TAF store directivs "byte" and "kind" seem equivalent;
12      Most tamc.h have been updated correspondingly.
13    
14    checkpoint61i
15    o autodiff:
16      fix autodiff_sore/_restore indices for obcs
17      (spotted by I. Hoteit, M. Mazloff)
18    o pkg/autodiff, pkg/ctrl:
19      Add flag to reduce all tapelev I/O to single-prec.
20      In data.ctrl set
21        doSinglePrecTapelev = .TRUE.
22    o model/src/ini_curvilinear_grid.F: check in hack for SX8 compiler
23      to make sure that recip_dxV and recip_dyU are never zero, until we
24      have a proper exchange for them. Most compilers do not seem
25      to mind divisions by zero in the overlaps, as long as the results are
26      not used anywhere, but sxf90 does.
27    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
28      real fresh water flux (not yet)
29    o pkg/mdsio & rw:
30     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
31     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
32    o pkg/flt:
33     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
34       init_fixed & ini_varia.
35     - clean-up & simplify linear interpolation S/R:
36       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
37     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
38     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
39     - add vert. coordinate & horiz. indices to output files.
40     - change vertical position in initial condition, from index to depth [m].
41     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
42       (easier to get to a curvilinear grid) ; delX,delY no longer used.
43    o pkg/ggl90: a few modifications:
44     - fix bottom boundary condition, and interpolation of KappaE
45       near top and bottom
46     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
47     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
48     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
49    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
50      (maintain temporary backward compatibility, until next checkpoint)
51    
52    checkpoint61h
53    o pkg/diagnostics with "periodic averaging diagnostics":
54      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
55    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
56    o pkg/obcs: fix loop ranges for balancing code
57    o pkg/flt:
58     - improve criteria for finding which tile owns a float.
59     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
60    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
61      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
62      with ocean biogeo)
63    o pkg/flt:
64     - do some cleaning and fix the restart ;
65     - add output.txt in flt_example/results to get this pkg tested.
66    o genmake2: add an EXTENDED_SRC option and flag.
67       for now, cannot be turned on on command line (only through genmake_local)
68    o pkg/mdsio: read/write vector:
69     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
70     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
71       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
72     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
73      (drop to 4 digits matching for grad). But this test does not look very
74      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
75    
76    checkpoint61g
77    o pkg/flt:
78      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
79       + make OPTIONS file more standard.
80      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
81      - fix _BYTESWAPIO CPP-Flag
82      - standard reading of file-parameter "data.flt"
83      - fix argument list of S/R FLT_RESTART
84      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
85    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
86    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
87      a still unfixed compiler/optimization bug
88    
89    checkpoint61f
90    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
91      update results of global_ocean.cs32x15.icedyn test.
92    o move getcon.F from model/src to pkg/fizhi.
93    o pkg/exf: add parameter for extrapolation of temp up to the surface
94       and option to prevent negative evap (in bulk_largeyeager04 only).
95    o Prather Advection scheme: fix tracer conservation for divergent flow
96      (e.g., when using NonLin Free-Surface).
97    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
98    o gmredi (Visbeck-variable-K):
99     - add more parameters to Visbeck-variable-K.
100     - use a 5 points average for dSigmaR in Visbeck-K calculation
101       (more "homogenous": same stencil and same weights as in dSigmaH)
102     - update output of ideal_2D_oce experiment.
103    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
104      (#undef REAL4_IS_SLOW)
105     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
106       coordinate variable
107     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
108       (surface forcing fields), removes some of the functionality
109     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
110     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
111       probably not all: copy _RS surface flux fields to RL field before
112       calling DIAGNOSTICS_FILL
113     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
114       real*4 (CALL EXCH_*_RS) versions.
115     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
116       (generate new output).
117    
118    checkpoint61e
119    o gmredi (Visbeck-variable-K):
120      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
121      - change computation of Visbeck-K where Slope > Smax :        
122        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
123        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
124    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
125      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
126    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
127    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
128      does not become too large (to avoid precision problems in implicit-diffusion
129      solver); update ideal_2D_oce output.
130    o pkg ggl90:
131      - in ggl90_cal.F: compute only one set of visc/diff, used to
132        step forward TKE/T/S/momentum
133      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
134        have Prandlt =1)
135    o gmredi (fm07):
136      - add lower limit on Transition layer thickness + lower limit on 1/lambda
137      - allow to set few more params from data.gmredi
138    o pkg ggl90:
139          - add missing sqrt(2) factor in computation of mixing length
140            scale in ggl90_calc.F
141            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
142    
143    checkpoint61d
144    o adjoint modifs
145      - adapt to new field rhoInSitu
146      - allow to revert from StoreDynVars2D, StoreDynVars3D
147        to individual fields
148        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
149    o store 3-D (in-situ) density in commom block (DYNVARS.h)
150     - save 1 rho computation.
151     - no longer modify T & S inland when using down_slope pkg.
152    o gad_som : allow to switch to SOM advection for T & S without corresponding
153      pickup files (using new S/R: MDS_CHECK4FILE).
154    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
155      (for useSingleCpuIO to work in multi-threaded)
156    o pkg/shelfice:
157     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
158       with SHELFICEtopoFile in data.shelfice
159     - move code for reading ice shelf topography and modifying hFacC into separate
160       subroutines of the shelfice package
161     - separate initialisation of "fixed" and "variable" variables
162     - kTopC is not (yet) replaced by kSurfC, although this is possible
163    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
164    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
165      and rename:
166      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
167      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
168    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
169    
170    checkpoint61c
171    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
172      to add mass source/sink of fluid in the interior (3-D generalisation
173      of oceanic real-fresh water flux).
174    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
175    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
176    o new pkg: down_slope
177      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
178      - presently, modify T & S inland (dwnslp_calc_rho.F).
179        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
180      - implementation for ocean in P-coords not tested.
181      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
182    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
183      (to facilitate conversion of oceanic pkg to p-coordinate).
184    o change FIND_RHO to FIND_RHO_2D :
185      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
186    o new pkg: cheapaml
187    
188    checkpoint61b
189    o exch2:
190      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
191      - no longer depend on the order sequence (N,S,E,W).
192      - 3rd exchange no longer needed (tested with 24 tiles).
193      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
194      - exch_UV_A-grid readily available (but not yet tested).
195      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
196      (both are no longer needed) in exch_uv: no effect in forward run; but
197       get truncation error differences with adjoint exch.
198    o exch2:
199     - change index-bounds storage (moved from target to local tile,
200       more intuitive this way) ; rename/remove some variables.
201     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
202    
203    checkpoint61a
204    o exch2/matlab-topology-generator:
205      fix bug in index bounds for N-S internal exchange (hard to tell if this
206      had any effect on the solution).
207    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
208      is exceeded
209    o testreport: modify syntax of awk, so that it works also with
210      awk, and not only with nawk and gawk
211    
212    checkpoint61
213    o autodiff
214      Change default for TAF usage by removing argument '-nonew_arg'
215      This changes TAF subroutine argument list (ordering of active var.)
216      Omission of this flag leads to incompatibility w.r.t. TAMC
217      To restore TAMC-compatibility, need following modifs:
218      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
219      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
220      Tested TAF version is 1.9.22
221      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
222    
223    checkpoint60
224    --->>> This is the last checkpoint for which generating the adjoint
225    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
226    --->>> by default.
227    --->>> Future checkpoints will ommit this flag by default.
228    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
229    o pkg/grdchk: Add gradient check to etan0 perturbations.
230    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
231    o pkg/autodiff: more flexibility in zeroadj.
232      model/src: modifying do_oceanic_phys.F accordingly.
233    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
234    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
235      special setup of gmredi for which the adjoint is stable
236      enough for parameter optimization.
237    o bridging the gap between eddy stress and GM.
238      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
239          along with a change in CPP option (now ALLOW_EDDYPSI).
240      -> when using GM w/ GM_AdvForm:
241          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
242          is applied either in the tracer Eq. or in momentum Eq.
243          depending on data.gmredi (intro. GM_InMomAsStress).
244      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
245      The key modifications are in model/src/taueddy_external_forcing.F
246      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
247    
248    checkpoint59r
249    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
250      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
251      fix option to read coriolis(@ cell-corner) from files with CS-grid.
252    o pkg/mnc: add some attributes to standard 1D-coordinate variables
253    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
254      mass points, when using mnc for output
255      - add runtime parameter (missing_value, missing_value_int) to override
256        default (which is the value of getcon('UNDEF'))
257    o pkg/mnc: prepare mnc for the actual use of missing values with the
258      diagnostics package: small fix in mnc_cw_readwrite.template and more
259      initialisation of never used fields
260      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
261      versions
262    o pkg/thsice/thsice_ini_vars.F added default initial values so that
263      thermodynamics sea ice solver does not blow up when some initial fields
264      are missing.
265    o move from external_forcing_surf.F to ini_forcing.F
266      the p-coord. hack consisting in using pLoad to set phi0surf ;
267      update output of tutorial_global_oce_in_p (affected @ truncation level).
268    o Freshen up a bit hs94.1x64x5, notably:
269      remove rotationPeriod and tRef=5*0. (adjoint only), and add
270      exactConserv=.TRUE.
271    o pkg/generic_advdiff:
272      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
273      applies to files where Temperature & Salinity 2nd Order moments are used.
274    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
275      this uses a dynamically allocated internal state data structure
276      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
277      and requires a fortran 90 compiler
278    
279    checkpoint59q
280    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
281       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
282    o Refresh tutorial_global_oce_biogeo, notably:
283      - change bathymetry (put back seamounts in ACC, use hFacs)
284      - change EOS (POLY3 --> JMD95Z)
285      - use Bryan-Lewis vertical diffusivity
286      - use multidimensional advection
287      - remove old virtual virtual in dic pkg, now done through ptracer pkg
288      - change a couple of parameters in dic pkg
289    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
290    o pkg/obcs: change default to OBCSfixTopo = .true.,
291      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
292      - replace "debugMode" with "debugLevel .GE. debLevB"
293    o implementation of TAF directives for gchem,cfc,dic
294    o remove "exp5" (replaced by tutorial_deep_convection).
295    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
296      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
297      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
298      --> changes results in exp4, seaice_obcs
299    o tutorial_deep_convection :
300      update the set-up and increase resolution and domain size ; start
301      from pseudo initial conditions = output at t=120mn in order to see
302      something happening when running testreport.
303    o pkg/seaice: add os7mp as an advection scheme
304                  add check for advection schemes
305                  add a flag for restoring T and S underneath sea ice
306    o pkg/my82: add netcdf-support and diagnostics
307    o thsice pkg:
308      - Now hsMax limits snow height by turning it into ice following
309        flooding scheme (and now conserving energy)
310      - Slight rewriting of the formula in thsice_calc_thick.F
311      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
312      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
313    
314    checkpoint59p
315    o gchem / dic / cfc :
316      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
317      - add new parameter files: "data.dic" & "data.cfc" ;
318      - various re-arrangement in initialisation & header file ;
319      - fix tutorial_global_oce_biogeo for multi-threaded test.
320    o pkg/dic: test for "pickup_dic" file when restarting ;
321      if no pickup-file, can restart with a re-initialised pH (same as it did
322      before) providing pickupStrictlyMatch is set to False.
323    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
324      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
325    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
326      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
327    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
328     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
329       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
330    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
331       scheme to use for vorticty-term ;
332     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
333       (with default selectVortScheme, return to original discretisation)
334     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
335    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
336    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
337      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
338      also fix diagnostics VISCAHW & VISCA4W.
339    
340    checkpoint59o
341    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
342    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
343      move a few statemens out the main loop into separate loops
344    o pkg/shelfice:
345      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
346        (kg/m^2/s), does not break tests, because in verification/isomip,
347        rhoConstFresh=rhoConst (by accident)
348      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
349      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
350        new file model/src/seawater.F, so that they are available for all pkgs.
351      - convert potential temperature into in-situ temperature. This changes the
352        isomip tests => update tests
353    o add a flag writePickupAtEnd (default=true) to be able to suppress
354      writing a pickup at the last timestep
355    o tools/mpack-1.6 :
356      - disable automake (not working) and autoconf (not needed).
357      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
358        also cleaner with much less compilation warnings.
359    o pkg/profiles:
360      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
361      (for "less than 32 characters name" compiler requirement)
362    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
363      conditions that have a different sampling frequency than S/T/U/V obcs
364    o pkg/diagnostics (stats-diags):
365      - fix global Min/Max in case 1 processor get only empty tiles
366    o genmake2: replace (4 times)
367         make genmake_tc_1.o >> genmake_warnings 2>&1
368      with
369         COMM="$CC $CFLAGS -c genmake_tc_1.c"
370         echo $COMM >> genmake_warnings
371         $COMM >> genmake_warnings 2>&1
372      to make genmake2 always see the value of CC as specified in the optfile.
373    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
374      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
375      - modify verification advect_cs test to test SOM-advection on CS-grid.
376    o pkg/ctrl:
377      - Rewrite of ctrl_map_ini_ecco.F,
378        introducing a generic routine (ctrl_map_ini_gen.F).
379      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
380    
381    checkpoint59n
382    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
383      number in dedicate array "hdiag":
384      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
385        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
386      - many small changes (integer format) for large number of diagnostics
387      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
388        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
389    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
390      usingSphericalGrid, this allows to define the rotated grid coordinates
391      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
392      geographical coordinates according to the inverse of the rotation defined
393      by the Euler angles, so that Coriolis parameter and online-interpolation by
394      exf works with the geographical coordinates on XC/YC/XG/YG.
395      Naturally, this feature does not work with all packages, so some
396      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
397      profiles), because there the coordinates are assumed to be regular
398      spherical grid coordinates.
399    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
400      - introduce isopycnal diffusion coefficient control.
401    o tools/adjoint_options:
402      - additional control vector components.
403    o pkg/mnc: have mnc create marginally meaning full coordinate variables
404      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
405    o pkg/mypackage:
406      - add example of read/write pickup for state-var ;
407      - add entry points to the main code for state-vars diags & write-pickup.
408    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
409      transitions for useExfYearlyFields
410      - add new subroutine that determines the file to read from for
411        use*YearlyFields = .TRUE. and .FALSE.
412      - add a verification experiment to global_with_exf that tests
413        useExfYearlyFields with USE_EXF_INTERPOLATION defined
414    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
415      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
416      subroutines (which could be generated from a template, because they are
417      almost identical), for now they are included in obcs_prescribe_read.F for
418      simplicity
419    o pkg/exf:
420      - add a little more diagnostic to exf_interp_read (in analogy to
421        mds_read_field, can be turned off with debugLevel < debugLevA=1)
422      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
423        ugly but fast by unrolling short inner loops, inserting a unroll=8
424        directive in routine lagran, and splitting a loop and making do while the
425        outermost loop (the latter requires the intoduction of index arrays)
426    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
427    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
428      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
429    o verification/seaice_obcs: updated for restart test and latest options
430    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
431      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
432      for now this is only available for the C-grid code and also within
433      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
434    
435    checkpoint59m
436    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
437      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
438    o gad_som : fix flux output (& diagnostics) to have same units as other  
439      advection scheme fluxes (was previously multiplied by deltaT).  
440    o added verification/seaice_obcs both to test seaice open boundaries
441      and to provide an example matlab scrpt for generating them
442    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
443    o pkg/salt_plume: clean up salt_plume_frac.F to
444      remove redundancy in PlumeMethod 1 and 4
445    o pkg/kpp: added saltplume diagnostics
446    o pkg/obcs and pkg/seaice:
447      - do not set uice and vice to zero when OB*icefile are unspecified
448      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
449      - moved seaice tracer obcs after call to seaice_growth
450    o pkg/salt_plume: added various options for salt plume depth
451      criterion and for vertical distribution of the salt
452    
453    checkpoint59l
454    o pkg/ptracers: new version of ptracers pickup:
455      read meta file and write only fields which are needed to restart.
456      ( same logic as main pickup file ; also using pickupStrictlyMatch )
457    o pkg/seaice:
458      - add timescale for melting due to warm mixed layer as a means of
459        setting SEAICE_availHeatFrac more conveniently
460      - add a CPP-flag/runtime parameter check for flooding algorithm
461      - reformulated availHeat in seaice_growth.F to be independent of AREA
462    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
463      unit changes
464    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
465    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
466      SX vector computer.
467    o pkg/seaice:
468      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
469        seaice forcing fields can now be read only through pkg/exf
470      - removed some unused halos
471    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
472    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
473      or U/VICE from U/VWIND before computing U/VSTRESS
474    
475    checkpoint59k
476    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
477      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
478    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
479      all experiments pass when compile with un-initialised var. checking option.
480    o added pkg/salt_plume
481    o script to test restart (for now, in MITgcm_contrib/jmc_script)
482    o pkg/seaice: new read/write pickup version.
483      read meta file and write only fields which are needed to restart.
484      ( same logic as main pickup file ; also using pickupStrictlyMatch )
485    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
486    o lab_sea.hb87: modify the domain & update output.hb87.txt :
487      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
488      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
489      process. Fixed here by closing the domain at the Northern boundary.
490    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
491    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
492      a set of consecutive levels in/from a 3-D array.
493    o pkg/ptracers:
494      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
495      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
496    
497    checkpoint59j
498    o in pkgs: dic, obcs, offline, rbcs:
499      standard way to compute coeff. for time interpolation between 2 time reccords
500      which retains full precision (& make results less dependent on compiler).
501      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
502    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
503      packages instead of reading ice cover and wind speed separately
504    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
505     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
506      to allow to compile customized code before the update)
507    o cleaning-up:
508      - fix CPP instruction syntax in pkg/obcs
509      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
510        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
511      - fix some threads issue in IO parts.
512    o pkg/dic:
513      - add tons of "_d 0" (--> much better testreports !)
514       and then update outputs of tutorial_global_oce_biogeo
515    o pkg/mom_fluxform:
516      add a special version of momentum advection intended to conserve momentum
517      next to a bathymetry step or a coastline edge. (default = off = #undef)
518    o new read/write pickup version:
519      - for now, only implemented for main (mdsio) pickup file.
520      - write out only what is needed to restart; merge pickup_nh , pickup_ph
521        and main pickup together.
522      - read meta file; read only what is needed to restart; stop if a field
523        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
524        if it make sense (even if the restart is not perfect).
525      - if no meta file, assume that pickup to read corresponds exactly to
526        a pickup that would currently be written.
527      - read pickup written in the old format (until checkpoint59i) if it
528        recognizes an old meta file (no field-list).
529      - add a meta file in exp. which starts from a pickup: 2 cases:
530        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
531         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
532        b) a meta file describing the content of the associated pickup file
533         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
534    o pkg/mdsio & pkg/rw:
535      - new routine to read a meta file ; new set of routine to read
536        Multiple-fields file (with meta file).
537    o added open boundary conditions capability for seaice
538        HSNOW, HSALT, UICE, and VICE
539    
540    checkpoint59i
541    o adjoint:
542      * fix multiDimAdvection adjoint
543        (partial recomputation problem by TAF for fVerT(:,:,kDown)
544        and comlev1 size definition (maxpass vs. max. number of tracers)
545      * verification/global_ocean.90x45x15 adjoint now tests
546        NLFS and multiDimAdvection using DST3 (=30)
547      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
548    o pkg/kpp: add "_d 0" to real constant (if missing);
549      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
550      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
551    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
552      for internal parameters related to restart process (formerly from PARAMS.h)
553      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
554    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
555      as argument. (only atm2d & obcs write_pickup have not yet been updated)
556    o pkg/monitor:
557      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
558      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
559      - account for deep Atmosphere factor and density factor (anelastic)
560    o added open boundary conditions capability for seaice HEFF and AREA
561    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
562      thermodynamics
563      - requires a little reorganization, which affects the testreport results
564        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
565        so that now the conservative form is tested
566      - add a few comments
567    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
568    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
569    o add new diagnostics to seaice: advective, diffusive fluxes (only for
570      multidim-advection, for scheme 2 they are not filled) and transports,
571      thermodynamic growth rates
572    o change units of EmPmR (inside the code, + within coupling interface)
573      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
574      Affects results @ truncation level (cg2d match) and update output of
575       experiments: lab_sea(6), global_ocean.90x40x15(10),
576      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
577      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
578      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
579      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
580    
581    checkpoint59h
582    o pkg/exf:
583      - improve vectorization by moving if-statement out of loops in
584        exf_mapfields, exf_radiation
585      - exf_bulkformulae.F: introduce 2D fields and vectorize code
586    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
587    o testreport:
588      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
589        monitor & update offline_exf_seaice exp. output.
590      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
591    o pkg/seaice:
592      - bug fix in the evp solver: boundary conditions were affected be
593        masking of zMax/zMin (changes results)
594      - minor bug fix in boundary conditions in seaice_calc_strainrates
595        (changes results for no_slip)
596      - seaice_lsr.F: make interpolation of eta dependent on boundaries
597      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
598      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
599        stress formulation and no-slip boundary conditions
600    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
601      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
602    o pkg/seaice: a first HSALT time stepping equation has been checked in
603    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
604      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
605      without requiring DO-IF statements
606    o pkg/thsice:
607      use continuous power-law function for partition of energy between lateral
608      melting/freezing and thinning/thickening ; old code using step function
609      still available with #undef THSICE_FRACEN_POWERLAW
610      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
611    o testreport: change AD testing : check against results/output_adm.txt
612      using same scripts as for forward test.
613    
614    checkpoint59g
615    o adjoint testing: in preparation for changing testreport:
616      - output format: cost and grad written on separated lines
617      - ad output results in directory "results" (instead of "results_ad")
618    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
619    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
620    o pkg/ecco: allow user defined cost function contributions
621    o testreport:
622      Allow to choose (per experiment) the list of tested output variables
623       and the main variable (used to issue a pass/FAIL ) ;
624      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
625      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
626      Also modify printing of summary:
627       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
628       b) echo the list of tested variables in the individual summary.txt of
629          each experiment.
630    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
631      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
632      (but still depend on the tile decompostion of the domain).
633    o pkg/seaice: change a discretization detail to make the B-grid code
634      "more symmetric". This change is likely to remove all "ridges/leads" that
635      where quasi-aligned with the grid in B-grid solutions. It may also be
636      the solution to the stress coupling issues with the B-grid.
637    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
638      remove .cvsignore from input dir. (since testreport no longer run here).
639    o pkg/thsice:
640     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
641     - fix reshaping of sea-ice just after advection:
642       melt all the ice only if ice-volume is too small.
643     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
644       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
645     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
646    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
647      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
648    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
649      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
650      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
651      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
652      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
653      -> update output.txt
654    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
655     this affects truncation error: -> update output.txt of exp:
656      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
657      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
658    
659    checkpoint59f
660    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
661    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
662      a bounded range (in forward mode)
663    o pkg/ecco, ctrl, autodiff and mom_common:
664     internal parameter controls, completements of implementations
665    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
666    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
667      (not seem any difference in testing results).
668    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
669       at face corners.
670    o pkg/generic_advdiff:
671     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
672      loop range indices for computing vertical advection tendency
673      and do the calculation in the interior only (no overlap) ;
674      for now, only implemented for SOM advection (to save CPU time).
675     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
676    o exch2 adjoint
677      First set of changes:
678      - add exch2 hand-written adjoint templates
679      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
680        This will require cleanup in pkg/autodiff/*.F
681        (changed routines currently kept separate in verif. code/)
682      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
683        that used to hide exch2 or cubed-sphere specific code
684        (commented via 'cph-exch2')
685    o pkg/seaice
686      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
687    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
688       output of global_ocean.cs32x15.thsice .
689    
690    checkpoint59e
691    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
692      for B-grid vector (not yet tested) and C-grid vector (<- only used
693      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
694    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
695      (#ifdef ALLOW_SALT_PLUME)
696    o gather_2d/scatter_2d: removed halo regions
697    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
698      scheme and the corresponding test case (under front_relax dir). For now,
699      only available with Skew-flux form and not yet tested in realistic set-up.
700      adjoint: store directives updated, but gradient checks deteriorated,
701      so maybe GM/Redi adjoint is now broken.
702    o seaice adjoint
703      * add AREA, HEFF, HSNOW as control variable
704        (should not change lab_sea results)
705      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
706    o pkg/seaice:
707      * added computation of saltFlux in seaice_growth;
708        For time being, sea ice salinity is assumed constant
709        contribution of snow flooding to freshening of sea ice is neglected.
710        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
711        defaults to 0.0 in order to maintain backward compatibility.
712        Typical values for SEAICE_salinity are 4 to 10 g/kg.
713      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
714      * added SEAICE_availHeatFrac, which specifies fraction of surface level
715        heat content used to melt or grow ice
716      * commented out cap of HICE: it helps keep ice thinner
717      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
718      * applied OBCS T/S mask to HEFFM sea ice mask
719    
720    checkpoint59d
721    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
722     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
723     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
724    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
725     and change default value of parameter "GM_Small_Number";
726     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
727       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
728       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
729    o pkg/ecco: cost function when applying pkg/smooth to controls
730    o pkg/ctrl: add forcingPrecond run time parameter
731    o pkg/seaice:
732     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
733     - fix bug in metric terms of u-equation in LSR solver (implicit part),
734       changes verification/lab_sea
735     - rearrange implicit part of u-equation in LSR solver to make it easier to
736       read, understand, and debug. This causes changes at the truncation level.
737     - fix (serious) bug in the boundary conditions (sign error in the implicit
738       part) of the LSR solver. Changes all LSR results.
739     - fixed problem with HSNOW initialization to avoid thick snow when AREA
740       is initilized with small values - does not change lab_sea results.
741     - added HsnowFile initialization capability
742    o pkg/smooth: addition to model/src and pkg/ctrl so allow
743     initialization of pkg/smooth and application to control vector
744    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
745    o dependencies: pkg/profiles requires pkg/cal
746    o pkg/profiles:
747     - added option ALLOW_PROFILES_GENERICGRID
748         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
749         that interpolation information (grid points and coefficients) is provided
750         within the netcdf input files.
751         -> sample matlab scripts can be found in MITgcm_contrib/gael
752         that allow you to prepare netcdf input files.
753     - also modified: cleaner include statements, cleaner error print statements,
754       cleaner stops when error, and more tests of the netcdf input files consistency.
755    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
756    o pkg/seaice:
757     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
758       requires a new routine: seaice_diagnostics_fill.F
759     - make sure that seaice does not move if not forced (pressure replacement
760       method, Hibler and Ip, 1995), changes results
761     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
762     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
763       It is turned off by default (=-1.), because it changes the results.
764     - make it possible to read AREA from a file, too.
765    
766    checkpoint59c
767    o add S/R and diagnostics for oceanic mixed-layer depth
768    o move GMRedi call after all vertical mixing schemes (including KPP)
769    o pkg/thsice:
770     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
771      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
772    o pkg/obcs:
773     - bug fix for balance code
774    o pkg/seaice:
775      - allow values of SEAICE_elasticParm > 1
776      - add new parameter SEAICE_evpTauRelax as an alternative
777        to SEAICE_elasticParm
778      - make lsr boundary conditions free slip (by default), changes result
779      - add code for no slip boundary conditions for lsr
780      - set minimum of zeta to zero (and not 4e8) (changes results)
781      - add a cap on AREA after advecting AREA if seaice_growth is not called
782    o change calculation of Visbeck K:
783      - no longer depend on tapering scheme; instead, compute slope (limited
784        by GM_maxSlope). this is equivalent to what was comuted before with
785        clipping or linear tappering.
786      - fix vertical averaging (wrong by 1/2 level)
787      - leave the old version (but will not be maintained) within
788        #ifdef OLD_VISBECK_CALC / #endif
789      - update output of exp. ideal_2D_oce
790    o change error catch in calc_r_star to improve vectorization
791    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
792      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
793    o adjoint:
794      Re-organized adjoint checkpointing according to Matt Mazloff
795      (but with modifs/completions/cleanups)
796      Storing is now bundled into large arrays to optimized I/O
797      (and second step in cleanup of the_main_loop)
798    
799    checkpoint59b
800    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
801      - export/import (between ocean & coupler) fields needed for ocean DIC.
802    o pkg/seaice:
803      - get rid of three more exchanges seaice_calc_viscosities (required
804        different loop boundaries in seaice_lsr and seaice_ocean_stress)
805      - bug fix in seaice_ocean_stress (update of lab_sea required)
806      - reduce loop boundaries to necessary minimum also in seaice_evp
807      - go back to the old way of computing deltaC/Z as the adjoint likes that
808        better
809    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
810      passive tracer to an Age Tracer) + update output.txt
811    o pkg/exf:
812      - implement A-grid / C-grid selection for wind-stress input files.
813      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
814      for now, in exf_bulk_largeyeager04.F only :
815      - change implementation for case where windspeed + 2. components wind-stress
816        are read-in. AND use rhoConstFresh to convert evap.
817    o pkg/seaice:
818      - use correct EXCH_UV for wind-forcing (on A-grid).
819      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
820        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
821    o pkg/exf:
822      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
823      EXF_INTERPOLATION:
824      - merge global_with_exf/code version of exf_interp_read.F
825        to the main code ;
826      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
827        reading the file ; Important: This options needs to be defined to recover
828        previous code.
829        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
830      - no longer loose real*8 precision along the way when using exf_iprec=64.
831    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
832      - change discretisation of evp-solver in order to avoid another exchange
833        (changes lab_sea) and clean up a little
834      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
835        help the adjoint (this also changes the results slightly)
836      - add a few "_d 0" where they had been missing in seaice_evp.F
837      - cleaning up: remove unused seaice_calc_rhs.F
838    o pkg/exf: some cleaning-up:
839      - change various "constants" into runtime parameters
840      - cleaned-up Large&Yeager04 routine which should eventually
841        replace exf_bulkformulae.F (changed names of S/R and CPP)
842        and merged various ALLOW_ATM_WIND options
843     only used with thsice pkg (in thsice_get_exf.F):
844      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
845        which are used when useStabilityFct_overIce=TRUE (= the default)
846      - change default values of ice & snow emissivity and scale downward LW
847        by ice & snow emissivity.
848    o pkg/thsice:
849     fix few little problems, in thsice_calc_thickn.F:
850      - growth vertically (and not laterally) if iceFrac == iceMaskMax
851      - melt only laterally if hIce < hThinIce (as the comments say)
852      and in thsice_extend.F:
853      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
854      - start to form ice as soon as the minimum ice-volume is reachable.
855     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
856      and cpl_aim+ocn
857    o pkg/kpp
858     - move computation of surface related input fields to KPP into a new
859       subroutine kpp_forcing_surf.F
860     - remove wrong (within bi,bj loops) EXCH calls.
861     - little cleaning (add argument myThid in last position, cvs header ...)
862     - for now, fix conservation problem by exchanging KPPviscAz (may not
863       be the best fix)
864    o pkg/seaice
865     - check for inconsistent evp parameter/cpp-flag combination
866     - remove leftover errIO flat for obsolete name list error handling
867    o OpenAD
868     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
869    
870    checkpoint59a
871    o pkg/seaice: some parameter clarifications and a little bit of clean up
872    o pkg/thsice: rename run-time parameters:
873       himin       -> hIceMin
874       himin0      -> hThinIce
875       hihig       -> hThickIce
876       i0          -> i0swFrac
877       transCoef   -> bMeltCoef
878       frac_energy -> fracMelting
879      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
880       with default values (for now) that do not change the results.
881      remove old version of thsice vars advection in pkg/seaice.
882    o in FFIELDS.h:
883      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
884      - make pLoad & sIceLoad always available (but still only used if
885         ATMOSPHERIC_LOADING is #define).
886    o pkg/kpp: replaced _KPP_RL with _RL
887    o bug fixes for vertical diffusivity computations when both KPP and
888        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
889        are no longer updating the vertical diffusivity array
890        (passed as argument) but are (re-) setting those arrays.
891    o pkg/seaice: fix bug in evp solver, while doing that
892      - change (improve?) discretization of stress computations for both
893        cgrid-lsr and evp solver
894      - add a new routine to compute strain rates
895      - the above changes lab_sea results
896      - add no slip conditions for evp solver (off by default), lsr-version
897        may follow
898      - fix exchange for shear at Z-points (does not change lab_sea)
899      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
900        (to force the user to pick a time step since there is not "safe" way
901        of choosing it)
902      - add principal stress diagnostics
903      - rearrange fields for evp a little to avoid having to call a: too many
904        exchanges and b: exchanges for stress trensor components which we do
905        not have.
906      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
907        of evp, complete rewrite for lsr case (latter is does not yet work
908        in all cases)
909    o pkg/kpp: add code to have mixing in shelf ice caverns
910      - add myThid to all kpp routines (long overdue)
911    
912    checkpoint59
913    o pkg/exf:
914      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
915        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
916      - move exf header files from lower_case.h to UPPER_CASE.h ;
917        add missing cvs Header & Name
918      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
919      - add namelist param. selectStressGridPosition, exf_monFreq
920      - retire many _CLIM routines, and remove data.exf_clim
921        + params moved to data.exf
922        + climsst, climsss now handled by exf_set_gen, i.e.
923          climss?period=0 refers to constant field,
924          climss?period=-12 to monthly forcing
925      - split up namelists in data.exf
926    o pkg/seaice:
927      - remove seaice_exch and seaice_exch_uv
928      - remove superfluous exchange of theta
929      - add myThid to seaice_budget_ocean/ice
930      - add new interface for atmospheric wind forcing (C-grid only)
931        + new routine
932        + two new field (taux, tauy for stress over ice)
933        + removed one global field (DAIRN) for C-grid case only
934    o pkg/thsise
935      - 2nd set of modifs for thsice adjoint in conjunction with exf
936    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
937    
938    checkpoint58y_post
939    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
940      vertical diffusivity, similar to that in MOM4; turned on using
941      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
942      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
943    o Added capability for 3D specification of background vertical diffusion
944      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
945      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
946      "data" file that contains the 3D vertical diffusivity coefficients.
947    o ice dynamics (pkg/seaice) with thsice thermodynamics:
948      - add code within pkg thsice to advect & diffuse sea-ice fields
949      similar to (and will replace) what has been added in  seaice_advdiff.F,
950      but: - conserving Mass, Heat & Salt.
951           - better when using non-linear advection scheme (not yet fully tested)
952           - can also be used in atmospheric set-up (for now, only the diffusion).
953    
954    checkpoint58x_post
955    o IO option for global-file compact format:
956      - add options when generating topology (utils/exch2/matlab-topology-generator)
957      - add I/O capability (pkg/mdsio).
958      - adapt utils/matlab/rdmds.m to read this format.
959      for now long-line format not yet supported by pkg/mdsio (& exch2).
960    o shelfice: add a few diagnostics
961    
962    checkpoint58w_post
963    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
964      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
965      (and replace horiVertRatio in NH code).
966      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
967                         and tutorial_plume_on_slope (sensitive to truncation)
968    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
969      directly to drive seaice model (C-grid only)
970    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
971     - reintroduce computation of wind from stress,
972     - compute tau (in exf_bulkformulae.F) from windstress averaged to
973       mass points to avoid tau = 0
974     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
975    o rdmnc.m: make it work with "global" files created with gluemnc
976    o rdmnc.m : some improvements in dealing with singleton dimension
977      (tested on all testreport mnc output files).
978    o genmake2: disable pkg/profiles if netcdf test fails.
979    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
980    o move call to cal_readparms up to make calendar parameters/variable available
981      to all packages
982    
983    checkpoint58v_post
984    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
985      useDynP_inEos_Zc tested.
986    o pkg/exf: changes to properly interpolate/mask/scale initial fields
987    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
988      and portions thereof.  See read_cs.txt for description and examples.
989    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
990      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
991      following the great-circle arc between those 2 points.
992    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
993      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
994    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
995     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
996     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
997     - still needs work (not working with some options ; efficiency to improve)
998       and serious testing.
999     - use this scheme for temperature & salinity in 2 advection test exp.:
1000       advect_xy & advect_xz, respectively.
1001    
1002    checkpoint58u_post
1003    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1004    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1005    o testreport: add option "-skipdir" to skip some test.
1006    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1007      momentum calculation.
1008    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1009    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1010      remove checkpoint.F and the_correction_step.F (no longer used);
1011      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1012    o add option (linFSConserveTr) to correct for tracer source/sink due to
1013      Linear Free surface
1014    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1015    o pkg/thsice: fix reading mnc-pickups
1016    
1017    checkpoint58t_post
1018    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1019    o pkg/mdsio:
1020     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1021       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1022       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1023     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1024     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1025       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1026     - new S/R (to replace MDSWRITEMETA), which allows to write more
1027       informations (variable names, time ...) to meta files.
1028     - modify rdmds.m to give back the meta file content.
1029    o pkg/diagnostics: change vertical interpolation to be safer, and more
1030       flexible (define p-levels to interpolate to in data.diagnostics);
1031      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1032       diagnostic pointer.
1033    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1034    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1035    o fix multi-category seaice:
1036     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1037       SEAICE_MULTICATEGORY
1038     - fix short wave heat flux
1039    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1040       and allow to use EVP solver. Change forward lab_sea: test both EVP
1041       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1042    o Initial check-in of lab_sea adjoint
1043      (very similar to natl_box_adjoint/code_seaice)
1044      * used C-grid and EVP solver
1045      * used KPP, GM/Redi
1046      * uses inAdExact=.TRUE.
1047      * gradient checks fail for both ADM and TLM
1048        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1049        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1050        issue is related to forward mismatch between g77 an ifort
1051    o pkg/seaice: overhaul of thermodynamics
1052     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1053     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1054     - move a few global fields out of SEAICE.h into seaice_growth.F and
1055       make them 2D (FICE/QNETO/ ...)
1056     - remove FO (it is the same as QNETO)
1057     - introduce a few local fields to avoid modifying external fields such
1058       as atemp, etc.
1059    
1060    checkpoint58s_post
1061    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1062      changed exf_set_gen.F so that
1063        genperiod=0 means input file is one time-constant field and
1064        genperiod=-12 means input file contains 12 monthly means
1065    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1066      this affects truncation error ; generate new output file for exp. which
1067      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1068        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1069        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1070        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1071        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1072        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1073    o start implementation of deep-atmosphere and anelastic formulation
1074    o verification: remove 2nd copy of input files and use script "prepare_run"
1075      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1076    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1077    o profiles: fix for multithreaded case
1078    
1079    o diagnostics: rename few diags:
1080      s/'PRESSURE'/'RCENTER '/g
1081      s/'TICE    '/'oceFreez'/g
1082      s/'TAUX    '/'oceTAUX '/g
1083      s/'TAUY    '/'oceTAUY '/g
1084      s/'SWFLUX  '/'oceQsw  '/g
1085      s/DIFx/DFxE/g
1086      s/DIFy/DFyE/g
1087      and add few ocean-forcing diagnostics:
1088      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1089    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1090      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1091      as actual snow thickness.  It now refers everywhere to effective snow
1092      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1093    
1094    checkpoint58r_post
1095    o modifications to pkg/seaice/growth.F, which change results of
1096      lab_sea experiment: fixes pertain to melting snow over open water, to
1097      masking EVAP under sea ice, and to using the correct AREA variable for
1098      computations of EVAP, PRECIP, HSNOW, and GHEFF
1099    o add ability to read bathy, salt, and theta using MNC (off by def)
1100    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1101      both are turned off by default and do no change any results
1102    o seaice advection with pkg/thsice: a step toward the use of non-linear
1103      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1104    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1105      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1106      in natl_box (affects results @ truncation level: update output.txt)
1107    o multi-threading and IO:
1108      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1109      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1110        (needed to work with SingleCpuIO): tested in all verif. exp.
1111    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1112      affects the results (but none of the verification test uses this scheme).
1113    o Adding some pkg/diagnostics capability to pkg/seaice
1114      (will certainly be subject to changes)
1115    o ctrl: adding new control variables:
1116      lwflux, lwdown, evap, snowprecip, apressure, runoff
1117    
1118    checkpoint58q_post
1119    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1120      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1121      high_res_cube configuration by 4% on Columbia.
1122    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1123      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1124      dynamical allocation (seems to work in multi-threaded).
1125    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1126      single CPU io) so that TAF does not have to see EESUPPORT.h
1127    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1128    
1129    checkpoint58p_post
1130    o obcs: stop if obcs is used with useCDscheme = .true.
1131    o shelfice:
1132     - fix a sign error so that no slip at shelfice interface works
1133     - remove stop for combination non-hydrostatic code and shelfice. That does
1134       not mean, that the results are correct, but at least they are numerically
1135       stable
1136    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1137    o added adjoint exch routined for all exch*3d* routines
1138      and updated flow directives
1139    
1140    checkpoint58o_post
1141    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1142      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1143    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1144      and clean-up reading/writing of pickup files.
1145    o fix local version of read/write pickup (NH part) in rotating_tank/code
1146    o simplify EXCH interface:
1147     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1148     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1149    o added the regrid package
1150    o shelfice:
1151     - add a simple boundary layer scheme to reduce noise
1152     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1153    
1154    checkpoint58n_post
1155    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1156       local variable (not in common block).
1157    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1158      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1159      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1160        to work with SingleCpuIO.
1161    o add "_d 0" to real constant of pkg/cfc subroutines ;
1162       update exp. cfc_exemple & tutorial_cfc_offline output files.
1163    o multi-threading and IO:
1164      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1165        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1166      - barrier before and after reading.
1167      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1168      - avoid using MDS_WRITELOCAL for LAND pkg output.
1169      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1170        common-block variables ; Allows multi-threading with master-thread IO.
1171    o change default MAX_NO_THREADS from 32 to 4 ;
1172      and stop cleanly when MAX_NO_THREADS is too small.
1173    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1174    
1175    checkpoint58m_post
1176    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1177       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1178    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1179       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1180       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1181    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1182        add MITgcm_tutorials (= code + all the tutorials)
1183    o ecco, option to compute cost for total ssh (mean+anom)
1184    o consistent with addition of ptracer and ssh in pkg/profiles
1185    o profiles: adding ptracer and ssh
1186    o testreport: change multi-test output-file name
1187      (from output.txt.{name} to output.{name}.txt)
1188    o profiles: now ok for mutli-tiles case
1189    o seaice: add 4 parameters for different advection schemes for area,
1190      (effective) seaice thickness, enthalphy, and snow height. Their default
1191      is the standard parameter SEAICEadvScheme
1192    o calc_gw:
1193     - add cosFacU in zonal viscous flux (harmonic.visc.).
1194     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1195       of tutorial_plume_on_slope.
1196    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1197    o calc_gw: true flux-form, account for horizontal grid spacing.
1198      update rotating_tank results, but not plume_on_slope (affected at
1199      truncation level, 11 digits).
1200    
1201    checkpoint58l_post
1202    o calc_gw:
1203     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1204     - remove side-drag for now (need to fix it); update plume_on_slope results.
1205     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1206    o commit code to make SST/SSS weights spatially variable
1207      (based on either variable in-situ or variable initial T/S weights)
1208    o pkg/ecco:
1209      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1210        now based on horizontally varying weights wthetaLev, wsaltLev
1211      * cost_averagesflags now returns year indices in addition to day, month
1212      * sflux balance is performed on annual basis
1213        (sflxumm, sfluxmm2, bal_sfluxmm)
1214      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1215        including separate counting and multipliers
1216    o pkg/rbcs
1217      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1218    
1219    checkpoint58k_post
1220    o testreport:
1221     - always build in dir. "build" (if not there, mkdir build instead of building
1222       & running in input)
1223     - run in dir run (if it exists), in build otherwise.
1224     - call prepare_run (if input/prepare_run exists)
1225     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1226    o pkg/exf modifications to interpolation and rotation routines for more
1227       reasonable treatment of North Pole singularity: for tracers North Pole
1228       value is set to northernmost zonal-mean value, for zonal velocity it is
1229       set to zero, and for meridional velocity it is set to northernmost value.
1230    o pkg/exf/exf_check_range.F
1231     - add tile index to diagnostics and move stop statement to the very
1232       end of the routine.
1233    o pkg/diagnostics: (diagnostics_main_init.F)
1234      define title of isomorphic variables according to the current config.
1235    o pkg/thsice with pkg/seaice dynamics:
1236    - fix domain of computation (interior only, required for exf) and do exchanges
1237    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1238    o towards a standard way of dealing with multi-threading in MONITOR
1239      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1240    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1241       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1242    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1243    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1244    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1245       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1246    o tracer advection:
1247     - clean-up and simplify calc_common_factors.F
1248     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1249       advection subroutine (but still not used within DST advection S/R)
1250    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1251    
1252    checkpoint58j_post
1253    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1254      from file (collects calls previously in FORWARD_STEP)
1255    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1256    o adjoint store dir. adjusted accordingly
1257    o genmake2
1258      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1259    
1260    checkpoint58i_post
1261    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1262      on wind stress (SEAICEstressFactor defaults to 1.)
1263    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1264      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1265    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1266      on CS-grid: no longer loosing mass.
1267    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1268    o pkg/ggl90: fix sloppy output and fix a bug
1269    o pkg/seaice: added SEAICEuseEVPpickup parameter
1270      - Set to false in order to start EVP solver with
1271        non-EVP pickup files when using SEAICEuseEVP
1272      - fix sign error in diffusion in seaice_calc_rhs
1273    
1274    checkpoint58h_post
1275    * Modifications for bottom topography control
1276      o replace hFacC by _hFacC at various places
1277      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1278      o add non-self-adjoint cg2d_nsa
1279      o update autodiff support routines
1280      o re-initialise hfac after ctrl_depth_ini
1281      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1282    * Adding verification for 5x5 box (4-layer) bottom topography control
1283    
1284    checkpoint58g_post
1285    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1286       used for mean seasonal cycle, mean diurnal cycle); add an example
1287       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1288    o pkg/ggl90:
1289      - add parameter (minimum surface kinetic energy)
1290      - fix bug (avoiding division by zero)
1291    o couple pkg/thsice to pkg/seaice:
1292      - modify advection in seaice to accomodate new scalar fields to be advected
1293      - only muliDimAdection scheme work with seaice/thsice
1294      - mapping of thsice-variables to seaice-variables, back and forth
1295      - does not break the verification experiments, but does not give the
1296        desired results either
1297    o pkg/seaice
1298      - make (default) second order advection a bit less confusing?
1299    
1300    checkpoint58f_post
1301    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1302      to pkg/seaice):
1303      - new routines thsice_map_exf and thsice_get_exf provide the interface
1304      - add an additional formal parameter to thsice_solve4temp
1305    o pkg/exf:
1306      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1307      - correct Stefan-Boltzmann constant
1308      - new parameter for longwave surface emittance
1309      - separate some stuff from exf_bulkformulae into new routines  
1310        exf_radiation, exf_wind
1311      - add new parameters and constants: longwave emissivity for ocean, ice
1312        and snow, evaporation parameters over ice
1313      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1314        either wind from stress or stress from wind
1315    o pkg/thSIce:
1316    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1317    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1318       and THSICE_CALC_THICKN
1319    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1320    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1321      to make debugging easier.
1322    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1323    o pkg/bulk_force:
1324      - clean-up comments and parameters ;
1325      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1326    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1327      generate new output for test-experiment: aim.5l_cs.thSI
1328    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1329      testreport accordingly
1330    
1331    checkpoint58e_post
1332    o SEAICE_CGRID adjoint done
1333    o R_STAR adjoint implemented.
1334      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1335      * need to sort out init. of h0facc, etc.
1336    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1337      to be able to use it in pure forward.
1338    
1339    checkpoint58d_post
1340    o upgrade simple test-experiment to tutorial example:
1341     step.1: duplicate the experiment and (step.2) will remove the old copy.
1342      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1343      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1344      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1345      tutorial_global_oce_biogeo    <- copy of dic_example
1346      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1347      tutorial_plume_on_slope       <- copy of plume_on_slope
1348      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1349      tutorial_global_oce_optim     <- empty for now (David ?)
1350      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1351     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1352    o correct a sign problem in cost_scat.F
1353    o obcs and ptracers: fix boundary conditions for advections schemes
1354      with larger stencil
1355    o thsice adjoint: start
1356    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1357      completeness
1358    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1359      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1360    o ptracers adjoint:
1361      * avoid extensive recomputatations
1362      * fix missing re-init. of gptr (missed by TAF)
1363    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1364      me to turn off the excessive output to STDOUT that this package produces
1365    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1366      and add those terms in Vector-Invariant formulation.
1367    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1368      if the control period (xx_hfluxperiod etc) is 0
1369    o in profiles pkg, clean routines and fix details
1370    o in ecco pkg, reading ssh data:
1371      fix problem in case the model does not start at iter0=0
1372    o fix mnc-pickup/restart for ptracers
1373    o new package prifiles:
1374      code to compute profile-based cost by Gael Forget
1375      (modifs in ecco, ctrl, autodiff)
1376    o Benign bug fix in initialization (spotted by M. Mazloff) of
1377      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1378    
1379    checkpoint58c_post
1380    o adjoint: finish NLFS adjoint and provide reference output in
1381      verification/global_ocean.90x40x15/results_ad_nlfs
1382    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1383      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1384      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1385      with SEAICE_CGRID defined.
1386    o move calendarDumps from "data" to "data.cal" and clean-up the code
1387      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1388    o add useEXF & useCAL flags (for now, set in hard-coded way)
1389    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1390      (were missing in NH mode, and wrong in quasihydrostatic mode).
1391      waiting for Chris updated version of calc_gw to add those CALLs.
1392    o fix bug in quasihydrostatic S/R ;
1393      add a test for this option: global_ocean.90x40x15.qshyd
1394    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1395      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1396    o add on/off flag useOffLine for package OFFLINE
1397    o seaice:
1398      - modify advection so that it works also on the C-grid
1399      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1400        problem in multi-tile runs with C-grid
1401      - add flags for clipping ice velocities and/or masking solver forcing
1402      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1403        C-grid solver
1404      - added a few comments to seaice_diffusion.F
1405      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1406        are now exclusive)
1407      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1408        required re-ordering the code a little:
1409       + make DAIRN global variable (defined in SEAICE)
1410       + move computation of the viscosities eta and zeta into a new separate
1411         routine (because I need to recompute them in seaice_ocean_stress.F)
1412    
1413    checkpoint58b_post
1414    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1415      update output.txt of exp. aim.5l_cs.thSI
1416    o various mnc cleanups and improvements:
1417      + shrink lookup tables by factor of ~4
1418      + better error reporting when running out of lookup space
1419      + able to handle longer path/file names (up to 500 chars)
1420    o adjoint:
1421      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1422      - TBD: "hidden" mom_vecinv recomp. in dynamics
1423    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1424     (allow to differentiate between forcing components using new integer flags:
1425      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1426     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1427    o ecco
1428      - enable trend removal from SSH anomaly obs.
1429    o adjoint
1430      - a fix for PmEpR when #undef EXACT_CONSERV
1431      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1432      - try to fix "hidden" recomp. in forward_step for NLFS
1433        (NLFS seems broken sometimes after I checked it in)
1434    o seaice:
1435     - add c-grid version of the dynamic solver:
1436       + three new routines that are the c-grid substitute lsr, dynsolver
1437         and ostres
1438       + put a few fields that were local to dynsolver into global common
1439         blocks, so that I can move the computation of stresses etc into
1440         seaice_lsr (saves coding but may break the adjoint).
1441     - replace more hardwired parameters by runtime parameters
1442     - add ice masks that mask the rhs of the implicit solvers where there
1443       is no ice (commented out in seaice_dynsolver, because i am not sure
1444       if this works properly), eventually this should replace the clipping
1445       of ice velocities in seaice_dynsolver to +/-40cm/s.
1446    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1447      include it only where its needed
1448    o move balancing of fluxes before the call of external_forcing_surf
1449    o seaice:
1450      - correct units of turning angles (now they are really in degrees)
1451      - move computation of GWATX/Y out of main routine into dynsolver
1452      - initialize GWATX/Y in seaice_init
1453    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1454      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1455    o seaice: add runtime flags for turning angles (default to zero)
1456    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1457      and trend from exf forcing and ctrl control adjustments
1458    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1459      (since checkpoint57x_post)
1460    o change the default rotation period to 86164.s = the Earth rotation
1461    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1462      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1463    o seaice advection: add code for choosing between the default (2nd order
1464      central differences) and multiDim advection schemes provided by
1465      pkg/generic_advdiff
1466    o seaice:
1467      - removed all references to SEAICE_GRID.h fields from
1468        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1469        (cubed-sphere configuration will change a little)
1470      - grid computations in seaice_init are obsolete now.
1471      - cleaned up code a little so that is easier to read (hopefully).
1472      - added new (better?) discretizations of default advection and diffusion
1473        (turn on with SEAICEuseFluxForm)
1474      - replace 1 in 3d global fields by kSurface in growth.F
1475      
1476    checkpoint58a_post
1477    o seaice:
1478      - bug fix in advect.F
1479    o shelfice:
1480      - separate shelfice load anomaly from pload (breaks with time
1481        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1482        Its default is 0., but it may be computed more cleverly from (unknown)
1483        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1484        done offline. A good approximation of the pressure load anomaly is
1485        necessary to avoid large initial adjustment processes underneath
1486        deep-reaching shelfice.
1487      - small fix in ISOMIP shelfice_thermodynamics
1488      - add more sophisticated thermodynamics of Hellmer (1989), this is
1489        now the default
1490      - give a few constants more intuitive names
1491    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1492      if bulk formulae are used in long integration (especially EmPmR). Turn
1493      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1494      if balancePrintMean, the imbalance that is substracted is printed to
1495      STDOUT.
1496    o fix bug (typo) in obcs_apply_eta.F
1497    o add a new package shelfice which enables us to model the circulation
1498      underneath shelf-ice with draughts of hundreds of meters.
1499     - works
1500     - to do: + include improved thermodynamics
1501              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1502                instead of new field kTopC
1503              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1504                instead of new field R_shelfIce and new code in ini_depth.F
1505                and ini_mask_etc.F?
1506              + adjust vertical mixing schemes?
1507    o seaice pkg:
1508     - add a cpp-flag to include a simple formula for a salinity dependent
1509       freezing point of sea water at the surface
1510     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1511       meridional stresses are now different (and hopefully correct)
1512    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1513       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1514       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1515    o pkg/diagnostics: add options and parameters for regional-statistics
1516       diagnostics ; define regions by reading a region-mask from a file
1517       (might add other options later)
1518    o pkg/bulk_force:
1519     - add option and parameters to use AIM surface-flux formulae.
1520     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1521       others forcing fields (defined in PARM05, parameter file "data") are loaded
1522       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1523     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1524     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1525     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1526       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1527     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1528    
1529    checkpoint58
1530    o add "--embed-source" option to genmake2 which, when the supporting
1531      tools can be compiled (as determined by genmake2) will turn on the
1532      embed_files package which then embeds the entire MITgcm source code
1533      (*.[fFhc] + Makefile) used for the build within the executable
1534      - requested by CNH but off by default
1535      - adds a paltry <9MB to the mitgcmuv executable in most cases
1536      - only writes the output when useEMBEDSRC in eedata is true
1537    o clean up 3-dim. relaxation codes:
1538      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1539      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1540      * Thanks to Tom Haine for testing!
1541    
1542    checkpoint57z_post
1543    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1544      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1545    o fix the pickup behavior for obcs in combination with ptracers
1546    o fix a bug in ptracers_external_fields_load
1547    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1548      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1549    o transfered surface NH pressure to eta field (if exactConserv).
1550  o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)  o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1551       and update lab_sea output.txt file.       and update lab_sea output.txt file.
1552    o completing 3-dim. relaxation code: additional term
1553         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1554      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1555      * At compile time, in "EXF_OPTIONS.h" set
1556          #define  ALLOW_CLIMTEMP_RELAXATION
1557          #define  ALLOW_CLIMSALT_RELAXATION
1558      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1559          tauThetaClimRelax3Dim = 15552000.0,
1560          tauSaltClimRelax3Dim  = 15552000.0,
1561      * 3 cases:
1562          1) Use a constant-in-time 3-dim. field
1563          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1564          3) Real-time relax. to time-evolving prescribed field
1565    o Adding Laplacian-type smoothness constraint on
1566      initial and boundary (forcing) controls (ic, bc)
1567      * enable at compile-time via
1568        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1569      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1570      * Absolute scale somewhat unclear so far
1571      * no area weighting was included since no other cost term does so far
1572    
1573  checkpoint57y_post  checkpoint57y_post
1574  First step for a NLFS adjoint  First step for a NLFS adjoint

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