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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.1087 by heimbach, Tue Apr 14 16:54:58 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 adding precip control xx_precip  o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
8  o moved ptracer ctrl index 17 -> 32    and keep the original tile numbering. Note: compatible with old
9      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
10    
11    checkpoint61l
12    o Overlaps had been forgotten in calculating ijk keys : fixed
13    o fix cyrus makedepend for gcc 4.4
14    o experiment fizhi-cs-aqualev20:
15      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
16      and generate new output. Note: new output is much closer to the old
17      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
18      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
19    o pkg/fizhi:
20     - change to avoid indices going deliberately over array-bounds
21     - remove unnecessary MPI stuff
22     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
23     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
24       does not go over array-bounds and therefore returns reliable output.
25     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
26       this S/R has 4 output arguments, which are used inside "get_alarm";
27       when it is called with the same variable "ndum" in place of several
28       output arguments, this produces weird side effect inside "get_alarm"
29      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
30       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
31       address) and produces error.
32    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
33    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
34       update lab_sea.lsr & lab_sea.salt_plume results
35    o pkg/seaice:
36      Major overhaul of the LSOR solver: change discretization from original
37      finite differences to finite volume. The old routine is still in the
38      file seaice_lsr.F and can be turned on with the CPP-flag
39      SEAICE_OLD_AND_BAD_DISCRETIZATION
40      Along with this change, the discretization of the strain rates is changed.
41      The same flag turns on the old discretization in seaice_calc_strainrates.F
42      All verification experiments with seaice are affected (except for
43      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
44      results by setting the above flag.
45      Further changes involve changes in defaults:
46      - ALLOW_FLOODING is defined and turned on by default
47      - SEAICEadvSnow = .true. is now the default
48      - SEAICEadvSalt = .true. is now the default
49      - SEAICEadvAge  = .true. is now the default
50      - SEAICE_clipVelocities  = .false. is now the default
51                                         (as per J. Zhang's recommendation)
52      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
53        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
54      - seaice_growth: replace computation of UG by a simple copy from wspeed
55    
56    checkpoint61k
57    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
58      seaice_lsr: fixed a few metric terms,
59                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
60                  add more debugging diagnostics
61      seaice_evp: removed superfluous many metric terms of FV discretization
62                  of stress divergence
63                  affects lab_sea, lab_sea.hb87
64      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
65                  of stress divergence for non-evp solver
66                  (this part is not tested anywhere)
67      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
68                  they were effectively only half slip
69                  affects lab_sea.hb87
70      updated all relevant verification experiments (except lab_sea//output_adm.txt
71        which was left over, but fails at level 7 & 6)
72    
73    checkpoint61j
74    o pkg/seaice: turn a few hard wired parameters into run time parameters
75    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
76      time in seconds as promised by the usints in seaice_monitor and exf_monitor
77    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
78      that are not cubed-sphere grids
79    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
80    o pkg/ctrl:
81      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
82    o non-hydrostatic (calc_gw.F):
83      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
84      update output of exp. global_ocean.cs32x15.viscA4
85    o remove backward compatibility for thetaMin,phiMin
86      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
87    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
88      interpolated wind field not only for curvilineargrid=.true., but also
89      for a rotated grid (rotateGrid=.true.)
90    o pkg/exf: add capability to bypass interpolation for runoff
91      by setting yet another CPP-flag
92    o eesupp/src, B-grid exchange:
93      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
94    o autodiff
95      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
96      allows to switch to single-prec common blocks;
97      corresponding switch occurs in tamc.h, integer isbyte
98      TAF store directivs "byte" and "kind" seem equivalent;
99      Most tamc.h have been updated correspondingly.
100    
101    checkpoint61i
102    o autodiff:
103      fix autodiff_sore/_restore indices for obcs
104      (spotted by I. Hoteit, M. Mazloff)
105    o pkg/autodiff, pkg/ctrl:
106      Add flag to reduce all tapelev I/O to single-prec.
107      In data.ctrl set
108        doSinglePrecTapelev = .TRUE.
109    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
110      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
111    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
112      real fresh water flux (not yet)
113    o pkg/mdsio & rw:
114     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
115     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
116    o pkg/flt:
117     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
118       init_fixed & ini_varia.
119     - clean-up & simplify linear interpolation S/R:
120       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
121     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
122     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
123     - add vert. coordinate & horiz. indices to output files.
124     - change vertical position in initial condition, from index to depth [m].
125     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
126       (easier to get to a curvilinear grid) ; delX,delY no longer used.
127    o pkg/ggl90: a few modifications:
128     - fix bottom boundary condition, and interpolation of KappaE
129       near top and bottom
130     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
131     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
132     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
133    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
134      (maintain temporary backward compatibility, until next checkpoint)
135    
136    checkpoint61h
137    o pkg/diagnostics with "periodic averaging diagnostics":
138      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
139    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
140    o pkg/obcs: fix loop ranges for balancing code
141    o pkg/flt:
142     - improve criteria for finding which tile owns a float.
143     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
144    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
145      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
146      with ocean biogeo)
147    o pkg/flt:
148     - do some cleaning and fix the restart ;
149     - add output.txt in flt_example/results to get this pkg tested.
150    o genmake2: add an EXTENDED_SRC option and flag.
151       for now, cannot be turned on on command line (only through genmake_local)
152    o pkg/mdsio: read/write vector:
153     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
154     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
155       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
156     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
157      (drop to 4 digits matching for grad). But this test does not look very
158      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
159    
160    checkpoint61g
161    o pkg/flt:
162      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
163       + make OPTIONS file more standard.
164      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
165      - fix _BYTESWAPIO CPP-Flag
166      - standard reading of file-parameter "data.flt"
167      - fix argument list of S/R FLT_RESTART
168      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
169    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
170    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
171      a still unfixed compiler/optimization bug
172    
173    checkpoint61f
174    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
175      update results of global_ocean.cs32x15.icedyn test.
176    o move getcon.F from model/src to pkg/fizhi.
177    o pkg/exf: add parameter for extrapolation of temp up to the surface
178       and option to prevent negative evap (in bulk_largeyeager04 only).
179    o Prather Advection scheme: fix tracer conservation for divergent flow
180      (e.g., when using NonLin Free-Surface).
181    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
182    o gmredi (Visbeck-variable-K):
183     - add more parameters to Visbeck-variable-K.
184     - use a 5 points average for dSigmaR in Visbeck-K calculation
185       (more "homogenous": same stencil and same weights as in dSigmaH)
186     - update output of ideal_2D_oce experiment.
187    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
188      (#undef REAL4_IS_SLOW)
189     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
190       coordinate variable
191     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
192       (surface forcing fields), removes some of the functionality
193     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
194     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
195       probably not all: copy _RS surface flux fields to RL field before
196       calling DIAGNOSTICS_FILL
197     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
198       real*4 (CALL EXCH_*_RS) versions.
199     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
200       (generate new output).
201    
202    checkpoint61e
203    o gmredi (Visbeck-variable-K):
204      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
205      - change computation of Visbeck-K where Slope > Smax :        
206        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
207        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
208    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
209      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
210    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
211    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
212      does not become too large (to avoid precision problems in implicit-diffusion
213      solver); update ideal_2D_oce output.
214    o pkg ggl90:
215      - in ggl90_cal.F: compute only one set of visc/diff, used to
216        step forward TKE/T/S/momentum
217      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
218        have Prandlt =1)
219    o gmredi (fm07):
220      - add lower limit on Transition layer thickness + lower limit on 1/lambda
221      - allow to set few more params from data.gmredi
222    o pkg ggl90:
223          - add missing sqrt(2) factor in computation of mixing length
224            scale in ggl90_calc.F
225            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
226    
227    checkpoint61d
228    o adjoint modifs
229      - adapt to new field rhoInSitu
230      - allow to revert from StoreDynVars2D, StoreDynVars3D
231        to individual fields
232        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
233    o store 3-D (in-situ) density in commom block (DYNVARS.h)
234     - save 1 rho computation.
235     - no longer modify T & S inland when using down_slope pkg.
236    o gad_som : allow to switch to SOM advection for T & S without corresponding
237      pickup files (using new S/R: MDS_CHECK4FILE).
238    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
239      (for useSingleCpuIO to work in multi-threaded)
240    o pkg/shelfice:
241     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
242       with SHELFICEtopoFile in data.shelfice
243     - move code for reading ice shelf topography and modifying hFacC into separate
244       subroutines of the shelfice package
245     - separate initialisation of "fixed" and "variable" variables
246     - kTopC is not (yet) replaced by kSurfC, although this is possible
247    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
248    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
249      and rename:
250      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
251      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
252    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
253    
254    checkpoint61c
255    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
256      to add mass source/sink of fluid in the interior (3-D generalisation
257      of oceanic real-fresh water flux).
258    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
259    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
260    o new pkg: down_slope
261      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
262      - presently, modify T & S inland (dwnslp_calc_rho.F).
263        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
264      - implementation for ocean in P-coords not tested.
265      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
266    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
267      (to facilitate conversion of oceanic pkg to p-coordinate).
268    o change FIND_RHO to FIND_RHO_2D :
269      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
270    o new pkg: cheapaml
271    
272    checkpoint61b
273    o exch2:
274      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
275      - no longer depend on the order sequence (N,S,E,W).
276      - 3rd exchange no longer needed (tested with 24 tiles).
277      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
278      - exch_UV_A-grid readily available (but not yet tested).
279      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
280      (both are no longer needed) in exch_uv: no effect in forward run; but
281       get truncation error differences with adjoint exch.
282    o exch2:
283     - change index-bounds storage (moved from target to local tile,
284       more intuitive this way) ; rename/remove some variables.
285     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
286    
287    checkpoint61a
288    o exch2/matlab-topology-generator:
289      fix bug in index bounds for N-S internal exchange (hard to tell if this
290      had any effect on the solution).
291    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
292      is exceeded
293    o testreport: modify syntax of awk, so that it works also with
294      awk, and not only with nawk and gawk
295    
296    checkpoint61
297    o autodiff
298      Change default for TAF usage by removing argument '-nonew_arg'
299      This changes TAF subroutine argument list (ordering of active var.)
300      Omission of this flag leads to incompatibility w.r.t. TAMC
301      To restore TAMC-compatibility, need following modifs:
302      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
303      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
304      Tested TAF version is 1.9.22
305      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
306    
307    checkpoint60
308    --->>> This is the last checkpoint for which generating the adjoint
309    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
310    --->>> by default.
311    --->>> Future checkpoints will ommit this flag by default.
312    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
313    o pkg/grdchk: Add gradient check to etan0 perturbations.
314    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
315    o pkg/autodiff: more flexibility in zeroadj.
316      model/src: modifying do_oceanic_phys.F accordingly.
317    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
318    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
319      special setup of gmredi for which the adjoint is stable
320      enough for parameter optimization.
321    o bridging the gap between eddy stress and GM.
322      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
323          along with a change in CPP option (now ALLOW_EDDYPSI).
324      -> when using GM w/ GM_AdvForm:
325          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
326          is applied either in the tracer Eq. or in momentum Eq.
327          depending on data.gmredi (intro. GM_InMomAsStress).
328      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
329      The key modifications are in model/src/taueddy_external_forcing.F
330      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
331    
332    checkpoint59r
333    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
334      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
335      fix option to read coriolis(@ cell-corner) from files with CS-grid.
336    o pkg/mnc: add some attributes to standard 1D-coordinate variables
337    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
338      mass points, when using mnc for output
339      - add runtime parameter (missing_value, missing_value_int) to override
340        default (which is the value of getcon('UNDEF'))
341    o pkg/mnc: prepare mnc for the actual use of missing values with the
342      diagnostics package: small fix in mnc_cw_readwrite.template and more
343      initialisation of never used fields
344      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
345      versions
346    o pkg/thsice/thsice_ini_vars.F added default initial values so that
347      thermodynamics sea ice solver does not blow up when some initial fields
348      are missing.
349    o move from external_forcing_surf.F to ini_forcing.F
350      the p-coord. hack consisting in using pLoad to set phi0surf ;
351      update output of tutorial_global_oce_in_p (affected @ truncation level).
352    o Freshen up a bit hs94.1x64x5, notably:
353      remove rotationPeriod and tRef=5*0. (adjoint only), and add
354      exactConserv=.TRUE.
355    o pkg/generic_advdiff:
356      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
357      applies to files where Temperature & Salinity 2nd Order moments are used.
358    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
359      this uses a dynamically allocated internal state data structure
360      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
361      and requires a fortran 90 compiler
362    
363    checkpoint59q
364    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
365       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
366    o Refresh tutorial_global_oce_biogeo, notably:
367      - change bathymetry (put back seamounts in ACC, use hFacs)
368      - change EOS (POLY3 --> JMD95Z)
369      - use Bryan-Lewis vertical diffusivity
370      - use multidimensional advection
371      - remove old virtual virtual in dic pkg, now done through ptracer pkg
372      - change a couple of parameters in dic pkg
373    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
374    o pkg/obcs: change default to OBCSfixTopo = .true.,
375      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
376      - replace "debugMode" with "debugLevel .GE. debLevB"
377    o implementation of TAF directives for gchem,cfc,dic
378    o remove "exp5" (replaced by tutorial_deep_convection).
379    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
380      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
381      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
382      --> changes results in exp4, seaice_obcs
383    o tutorial_deep_convection :
384      update the set-up and increase resolution and domain size ; start
385      from pseudo initial conditions = output at t=120mn in order to see
386      something happening when running testreport.
387    o pkg/seaice: add os7mp as an advection scheme
388                  add check for advection schemes
389                  add a flag for restoring T and S underneath sea ice
390    o pkg/my82: add netcdf-support and diagnostics
391    o thsice pkg:
392      - Now hsMax limits snow height by turning it into ice following
393        flooding scheme (and now conserving energy)
394      - Slight rewriting of the formula in thsice_calc_thick.F
395      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
396      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
397    
398    checkpoint59p
399    o gchem / dic / cfc :
400      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
401      - add new parameter files: "data.dic" & "data.cfc" ;
402      - various re-arrangement in initialisation & header file ;
403      - fix tutorial_global_oce_biogeo for multi-threaded test.
404    o pkg/dic: test for "pickup_dic" file when restarting ;
405      if no pickup-file, can restart with a re-initialised pH (same as it did
406      before) providing pickupStrictlyMatch is set to False.
407    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
408      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
409    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
410      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
411    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
412     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
413       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
414    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
415       scheme to use for vorticty-term ;
416     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
417       (with default selectVortScheme, return to original discretisation)
418     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
419    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
420    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
421      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
422      also fix diagnostics VISCAHW & VISCA4W.
423    
424    checkpoint59o
425    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
426    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
427      move a few statemens out the main loop into separate loops
428    o pkg/shelfice:
429      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
430        (kg/m^2/s), does not break tests, because in verification/isomip,
431        rhoConstFresh=rhoConst (by accident)
432      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
433      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
434        new file model/src/seawater.F, so that they are available for all pkgs.
435      - convert potential temperature into in-situ temperature. This changes the
436        isomip tests => update tests
437    o add a flag writePickupAtEnd (default=true) to be able to suppress
438      writing a pickup at the last timestep
439    o tools/mpack-1.6 :
440      - disable automake (not working) and autoconf (not needed).
441      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
442        also cleaner with much less compilation warnings.
443    o pkg/profiles:
444      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
445      (for "less than 32 characters name" compiler requirement)
446    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
447      conditions that have a different sampling frequency than S/T/U/V obcs
448    o pkg/diagnostics (stats-diags):
449      - fix global Min/Max in case 1 processor get only empty tiles
450    o genmake2: replace (4 times)
451         make genmake_tc_1.o >> genmake_warnings 2>&1
452      with
453         COMM="$CC $CFLAGS -c genmake_tc_1.c"
454         echo $COMM >> genmake_warnings
455         $COMM >> genmake_warnings 2>&1
456      to make genmake2 always see the value of CC as specified in the optfile.
457    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
458      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
459      - modify verification advect_cs test to test SOM-advection on CS-grid.
460    o pkg/ctrl:
461      - Rewrite of ctrl_map_ini_ecco.F,
462        introducing a generic routine (ctrl_map_ini_gen.F).
463      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
464    
465    checkpoint59n
466    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
467      number in dedicate array "hdiag":
468      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
469        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
470      - many small changes (integer format) for large number of diagnostics
471      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
472        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
473    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
474      usingSphericalGrid, this allows to define the rotated grid coordinates
475      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
476      geographical coordinates according to the inverse of the rotation defined
477      by the Euler angles, so that Coriolis parameter and online-interpolation by
478      exf works with the geographical coordinates on XC/YC/XG/YG.
479      Naturally, this feature does not work with all packages, so some
480      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
481      profiles), because there the coordinates are assumed to be regular
482      spherical grid coordinates.
483    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
484      - introduce isopycnal diffusion coefficient control.
485    o tools/adjoint_options:
486      - additional control vector components.
487    o pkg/mnc: have mnc create marginally meaning full coordinate variables
488      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
489    o pkg/mypackage:
490      - add example of read/write pickup for state-var ;
491      - add entry points to the main code for state-vars diags & write-pickup.
492    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
493      transitions for useExfYearlyFields
494      - add new subroutine that determines the file to read from for
495        use*YearlyFields = .TRUE. and .FALSE.
496      - add a verification experiment to global_with_exf that tests
497        useExfYearlyFields with USE_EXF_INTERPOLATION defined
498    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
499      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
500      subroutines (which could be generated from a template, because they are
501      almost identical), for now they are included in obcs_prescribe_read.F for
502      simplicity
503    o pkg/exf:
504      - add a little more diagnostic to exf_interp_read (in analogy to
505        mds_read_field, can be turned off with debugLevel < debugLevA=1)
506      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
507        ugly but fast by unrolling short inner loops, inserting a unroll=8
508        directive in routine lagran, and splitting a loop and making do while the
509        outermost loop (the latter requires the intoduction of index arrays)
510    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
511    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
512      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
513    o verification/seaice_obcs: updated for restart test and latest options
514    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
515      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
516      for now this is only available for the C-grid code and also within
517      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
518    
519    checkpoint59m
520    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
521      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
522    o gad_som : fix flux output (& diagnostics) to have same units as other  
523      advection scheme fluxes (was previously multiplied by deltaT).  
524    o added verification/seaice_obcs both to test seaice open boundaries
525      and to provide an example matlab scrpt for generating them
526    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
527    o pkg/salt_plume: clean up salt_plume_frac.F to
528      remove redundancy in PlumeMethod 1 and 4
529    o pkg/kpp: added saltplume diagnostics
530    o pkg/obcs and pkg/seaice:
531      - do not set uice and vice to zero when OB*icefile are unspecified
532      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
533      - moved seaice tracer obcs after call to seaice_growth
534    o pkg/salt_plume: added various options for salt plume depth
535      criterion and for vertical distribution of the salt
536    
537    checkpoint59l
538    o pkg/ptracers: new version of ptracers pickup:
539      read meta file and write only fields which are needed to restart.
540      ( same logic as main pickup file ; also using pickupStrictlyMatch )
541    o pkg/seaice:
542      - add timescale for melting due to warm mixed layer as a means of
543        setting SEAICE_availHeatFrac more conveniently
544      - add a CPP-flag/runtime parameter check for flooding algorithm
545      - reformulated availHeat in seaice_growth.F to be independent of AREA
546    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
547      unit changes
548    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
549    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
550      SX vector computer.
551    o pkg/seaice:
552      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
553        seaice forcing fields can now be read only through pkg/exf
554      - removed some unused halos
555    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
556    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
557      or U/VICE from U/VWIND before computing U/VSTRESS
558    
559    checkpoint59k
560    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
561      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
562    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
563      all experiments pass when compile with un-initialised var. checking option.
564    o added pkg/salt_plume
565    o script to test restart (for now, in MITgcm_contrib/jmc_script)
566    o pkg/seaice: new read/write pickup version.
567      read meta file and write only fields which are needed to restart.
568      ( same logic as main pickup file ; also using pickupStrictlyMatch )
569    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
570    o lab_sea.hb87: modify the domain & update output.hb87.txt :
571      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
572      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
573      process. Fixed here by closing the domain at the Northern boundary.
574    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
575    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
576      a set of consecutive levels in/from a 3-D array.
577    o pkg/ptracers:
578      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
579      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
580    
581    checkpoint59j
582    o in pkgs: dic, obcs, offline, rbcs:
583      standard way to compute coeff. for time interpolation between 2 time reccords
584      which retains full precision (& make results less dependent on compiler).
585      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
586    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
587      packages instead of reading ice cover and wind speed separately
588    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
589     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
590      to allow to compile customized code before the update)
591    o cleaning-up:
592      - fix CPP instruction syntax in pkg/obcs
593      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
594        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
595      - fix some threads issue in IO parts.
596    o pkg/dic:
597      - add tons of "_d 0" (--> much better testreports !)
598       and then update outputs of tutorial_global_oce_biogeo
599    o pkg/mom_fluxform:
600      add a special version of momentum advection intended to conserve momentum
601      next to a bathymetry step or a coastline edge. (default = off = #undef)
602    o new read/write pickup version:
603      - for now, only implemented for main (mdsio) pickup file.
604      - write out only what is needed to restart; merge pickup_nh , pickup_ph
605        and main pickup together.
606      - read meta file; read only what is needed to restart; stop if a field
607        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
608        if it make sense (even if the restart is not perfect).
609      - if no meta file, assume that pickup to read corresponds exactly to
610        a pickup that would currently be written.
611      - read pickup written in the old format (until checkpoint59i) if it
612        recognizes an old meta file (no field-list).
613      - add a meta file in exp. which starts from a pickup: 2 cases:
614        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
615         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
616        b) a meta file describing the content of the associated pickup file
617         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
618    o pkg/mdsio & pkg/rw:
619      - new routine to read a meta file ; new set of routine to read
620        Multiple-fields file (with meta file).
621    o added open boundary conditions capability for seaice
622        HSNOW, HSALT, UICE, and VICE
623    
624    checkpoint59i
625    o adjoint:
626      * fix multiDimAdvection adjoint
627        (partial recomputation problem by TAF for fVerT(:,:,kDown)
628        and comlev1 size definition (maxpass vs. max. number of tracers)
629      * verification/global_ocean.90x45x15 adjoint now tests
630        NLFS and multiDimAdvection using DST3 (=30)
631      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
632    o pkg/kpp: add "_d 0" to real constant (if missing);
633      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
634      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
635    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
636      for internal parameters related to restart process (formerly from PARAMS.h)
637      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
638    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
639      as argument. (only atm2d & obcs write_pickup have not yet been updated)
640    o pkg/monitor:
641      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
642      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
643      - account for deep Atmosphere factor and density factor (anelastic)
644    o added open boundary conditions capability for seaice HEFF and AREA
645    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
646      thermodynamics
647      - requires a little reorganization, which affects the testreport results
648        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
649        so that now the conservative form is tested
650      - add a few comments
651    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
652    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
653    o add new diagnostics to seaice: advective, diffusive fluxes (only for
654      multidim-advection, for scheme 2 they are not filled) and transports,
655      thermodynamic growth rates
656    o change units of EmPmR (inside the code, + within coupling interface)
657      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
658      Affects results @ truncation level (cg2d match) and update output of
659       experiments: lab_sea(6), global_ocean.90x40x15(10),
660      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
661      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
662      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
663      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
664    
665    checkpoint59h
666    o pkg/exf:
667      - improve vectorization by moving if-statement out of loops in
668        exf_mapfields, exf_radiation
669      - exf_bulkformulae.F: introduce 2D fields and vectorize code
670    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
671    o testreport:
672      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
673        monitor & update offline_exf_seaice exp. output.
674      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
675    o pkg/seaice:
676      - bug fix in the evp solver: boundary conditions were affected be
677        masking of zMax/zMin (changes results)
678      - minor bug fix in boundary conditions in seaice_calc_strainrates
679        (changes results for no_slip)
680      - seaice_lsr.F: make interpolation of eta dependent on boundaries
681      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
682      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
683        stress formulation and no-slip boundary conditions
684    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
685      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
686    o pkg/seaice: a first HSALT time stepping equation has been checked in
687    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
688      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
689      without requiring DO-IF statements
690    o pkg/thsice:
691      use continuous power-law function for partition of energy between lateral
692      melting/freezing and thinning/thickening ; old code using step function
693      still available with #undef THSICE_FRACEN_POWERLAW
694      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
695    o testreport: change AD testing : check against results/output_adm.txt
696      using same scripts as for forward test.
697    
698    checkpoint59g
699    o adjoint testing: in preparation for changing testreport:
700      - output format: cost and grad written on separated lines
701      - ad output results in directory "results" (instead of "results_ad")
702    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
703    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
704    o pkg/ecco: allow user defined cost function contributions
705    o testreport:
706      Allow to choose (per experiment) the list of tested output variables
707       and the main variable (used to issue a pass/FAIL ) ;
708      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
709      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
710      Also modify printing of summary:
711       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
712       b) echo the list of tested variables in the individual summary.txt of
713          each experiment.
714    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
715      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
716      (but still depend on the tile decompostion of the domain).
717    o pkg/seaice: change a discretization detail to make the B-grid code
718      "more symmetric". This change is likely to remove all "ridges/leads" that
719      where quasi-aligned with the grid in B-grid solutions. It may also be
720      the solution to the stress coupling issues with the B-grid.
721    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
722      remove .cvsignore from input dir. (since testreport no longer run here).
723    o pkg/thsice:
724     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
725     - fix reshaping of sea-ice just after advection:
726       melt all the ice only if ice-volume is too small.
727     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
728       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
729     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
730    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
731      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
732    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
733      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
734      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
735      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
736      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
737      -> update output.txt
738    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
739     this affects truncation error: -> update output.txt of exp:
740      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
741      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
742    
743    checkpoint59f
744    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
745    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
746      a bounded range (in forward mode)
747    o pkg/ecco, ctrl, autodiff and mom_common:
748     internal parameter controls, completements of implementations
749    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
750    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
751      (not seem any difference in testing results).
752    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
753       at face corners.
754    o pkg/generic_advdiff:
755     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
756      loop range indices for computing vertical advection tendency
757      and do the calculation in the interior only (no overlap) ;
758      for now, only implemented for SOM advection (to save CPU time).
759     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
760    o exch2 adjoint
761      First set of changes:
762      - add exch2 hand-written adjoint templates
763      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
764        This will require cleanup in pkg/autodiff/*.F
765        (changed routines currently kept separate in verif. code/)
766      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
767        that used to hide exch2 or cubed-sphere specific code
768        (commented via 'cph-exch2')
769    o pkg/seaice
770      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
771    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
772       output of global_ocean.cs32x15.thsice .
773    
774    checkpoint59e
775    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
776      for B-grid vector (not yet tested) and C-grid vector (<- only used
777      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
778    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
779      (#ifdef ALLOW_SALT_PLUME)
780    o gather_2d/scatter_2d: removed halo regions
781    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
782      scheme and the corresponding test case (under front_relax dir). For now,
783      only available with Skew-flux form and not yet tested in realistic set-up.
784      adjoint: store directives updated, but gradient checks deteriorated,
785      so maybe GM/Redi adjoint is now broken.
786    o seaice adjoint
787      * add AREA, HEFF, HSNOW as control variable
788        (should not change lab_sea results)
789      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
790    o pkg/seaice:
791      * added computation of saltFlux in seaice_growth;
792        For time being, sea ice salinity is assumed constant
793        contribution of snow flooding to freshening of sea ice is neglected.
794        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
795        defaults to 0.0 in order to maintain backward compatibility.
796        Typical values for SEAICE_salinity are 4 to 10 g/kg.
797      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
798      * added SEAICE_availHeatFrac, which specifies fraction of surface level
799        heat content used to melt or grow ice
800      * commented out cap of HICE: it helps keep ice thinner
801      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
802      * applied OBCS T/S mask to HEFFM sea ice mask
803    
804    checkpoint59d
805    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
806     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
807     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
808    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
809     and change default value of parameter "GM_Small_Number";
810     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
811       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
812       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
813    o pkg/ecco: cost function when applying pkg/smooth to controls
814    o pkg/ctrl: add forcingPrecond run time parameter
815    o pkg/seaice:
816     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
817     - fix bug in metric terms of u-equation in LSR solver (implicit part),
818       changes verification/lab_sea
819     - rearrange implicit part of u-equation in LSR solver to make it easier to
820       read, understand, and debug. This causes changes at the truncation level.
821     - fix (serious) bug in the boundary conditions (sign error in the implicit
822       part) of the LSR solver. Changes all LSR results.
823     - fixed problem with HSNOW initialization to avoid thick snow when AREA
824       is initilized with small values - does not change lab_sea results.
825     - added HsnowFile initialization capability
826    o pkg/smooth: addition to model/src and pkg/ctrl so allow
827     initialization of pkg/smooth and application to control vector
828    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
829    o dependencies: pkg/profiles requires pkg/cal
830    o pkg/profiles:
831     - added option ALLOW_PROFILES_GENERICGRID
832         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
833         that interpolation information (grid points and coefficients) is provided
834         within the netcdf input files.
835         -> sample matlab scripts can be found in MITgcm_contrib/gael
836         that allow you to prepare netcdf input files.
837     - also modified: cleaner include statements, cleaner error print statements,
838       cleaner stops when error, and more tests of the netcdf input files consistency.
839    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
840    o pkg/seaice:
841     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
842       requires a new routine: seaice_diagnostics_fill.F
843     - make sure that seaice does not move if not forced (pressure replacement
844       method, Hibler and Ip, 1995), changes results
845     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
846     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
847       It is turned off by default (=-1.), because it changes the results.
848     - make it possible to read AREA from a file, too.
849    
850    checkpoint59c
851    o add S/R and diagnostics for oceanic mixed-layer depth
852    o move GMRedi call after all vertical mixing schemes (including KPP)
853    o pkg/thsice:
854     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
855      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
856    o pkg/obcs:
857     - bug fix for balance code
858    o pkg/seaice:
859      - allow values of SEAICE_elasticParm > 1
860      - add new parameter SEAICE_evpTauRelax as an alternative
861        to SEAICE_elasticParm
862      - make lsr boundary conditions free slip (by default), changes result
863      - add code for no slip boundary conditions for lsr
864      - set minimum of zeta to zero (and not 4e8) (changes results)
865      - add a cap on AREA after advecting AREA if seaice_growth is not called
866    o change calculation of Visbeck K:
867      - no longer depend on tapering scheme; instead, compute slope (limited
868        by GM_maxSlope). this is equivalent to what was comuted before with
869        clipping or linear tappering.
870      - fix vertical averaging (wrong by 1/2 level)
871      - leave the old version (but will not be maintained) within
872        #ifdef OLD_VISBECK_CALC / #endif
873      - update output of exp. ideal_2D_oce
874    o change error catch in calc_r_star to improve vectorization
875    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
876      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
877    o adjoint:
878      Re-organized adjoint checkpointing according to Matt Mazloff
879      (but with modifs/completions/cleanups)
880      Storing is now bundled into large arrays to optimized I/O
881      (and second step in cleanup of the_main_loop)
882    
883    checkpoint59b
884    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
885      - export/import (between ocean & coupler) fields needed for ocean DIC.
886    o pkg/seaice:
887      - get rid of three more exchanges seaice_calc_viscosities (required
888        different loop boundaries in seaice_lsr and seaice_ocean_stress)
889      - bug fix in seaice_ocean_stress (update of lab_sea required)
890      - reduce loop boundaries to necessary minimum also in seaice_evp
891      - go back to the old way of computing deltaC/Z as the adjoint likes that
892        better
893    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
894      passive tracer to an Age Tracer) + update output.txt
895    o pkg/exf:
896      - implement A-grid / C-grid selection for wind-stress input files.
897      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
898      for now, in exf_bulk_largeyeager04.F only :
899      - change implementation for case where windspeed + 2. components wind-stress
900        are read-in. AND use rhoConstFresh to convert evap.
901    o pkg/seaice:
902      - use correct EXCH_UV for wind-forcing (on A-grid).
903      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
904        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
905    o pkg/exf:
906      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
907      EXF_INTERPOLATION:
908      - merge global_with_exf/code version of exf_interp_read.F
909        to the main code ;
910      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
911        reading the file ; Important: This options needs to be defined to recover
912        previous code.
913        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
914      - no longer loose real*8 precision along the way when using exf_iprec=64.
915    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
916      - change discretisation of evp-solver in order to avoid another exchange
917        (changes lab_sea) and clean up a little
918      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
919        help the adjoint (this also changes the results slightly)
920      - add a few "_d 0" where they had been missing in seaice_evp.F
921      - cleaning up: remove unused seaice_calc_rhs.F
922    o pkg/exf: some cleaning-up:
923      - change various "constants" into runtime parameters
924      - cleaned-up Large&Yeager04 routine which should eventually
925        replace exf_bulkformulae.F (changed names of S/R and CPP)
926        and merged various ALLOW_ATM_WIND options
927     only used with thsice pkg (in thsice_get_exf.F):
928      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
929        which are used when useStabilityFct_overIce=TRUE (= the default)
930      - change default values of ice & snow emissivity and scale downward LW
931        by ice & snow emissivity.
932    o pkg/thsice:
933     fix few little problems, in thsice_calc_thickn.F:
934      - growth vertically (and not laterally) if iceFrac == iceMaskMax
935      - melt only laterally if hIce < hThinIce (as the comments say)
936      and in thsice_extend.F:
937      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
938      - start to form ice as soon as the minimum ice-volume is reachable.
939     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
940      and cpl_aim+ocn
941    o pkg/kpp
942     - move computation of surface related input fields to KPP into a new
943       subroutine kpp_forcing_surf.F
944     - remove wrong (within bi,bj loops) EXCH calls.
945     - little cleaning (add argument myThid in last position, cvs header ...)
946     - for now, fix conservation problem by exchanging KPPviscAz (may not
947       be the best fix)
948    o pkg/seaice
949     - check for inconsistent evp parameter/cpp-flag combination
950     - remove leftover errIO flat for obsolete name list error handling
951    o OpenAD
952     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
953    
954    checkpoint59a
955    o pkg/seaice: some parameter clarifications and a little bit of clean up
956    o pkg/thsice: rename run-time parameters:
957       himin       -> hIceMin
958       himin0      -> hThinIce
959       hihig       -> hThickIce
960       i0          -> i0swFrac
961       transCoef   -> bMeltCoef
962       frac_energy -> fracMelting
963      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
964       with default values (for now) that do not change the results.
965      remove old version of thsice vars advection in pkg/seaice.
966    o in FFIELDS.h:
967      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
968      - make pLoad & sIceLoad always available (but still only used if
969         ATMOSPHERIC_LOADING is #define).
970    o pkg/kpp: replaced _KPP_RL with _RL
971    o bug fixes for vertical diffusivity computations when both KPP and
972        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
973        are no longer updating the vertical diffusivity array
974        (passed as argument) but are (re-) setting those arrays.
975    o pkg/seaice: fix bug in evp solver, while doing that
976      - change (improve?) discretization of stress computations for both
977        cgrid-lsr and evp solver
978      - add a new routine to compute strain rates
979      - the above changes lab_sea results
980      - add no slip conditions for evp solver (off by default), lsr-version
981        may follow
982      - fix exchange for shear at Z-points (does not change lab_sea)
983      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
984        (to force the user to pick a time step since there is not "safe" way
985        of choosing it)
986      - add principal stress diagnostics
987      - rearrange fields for evp a little to avoid having to call a: too many
988        exchanges and b: exchanges for stress trensor components which we do
989        not have.
990      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
991        of evp, complete rewrite for lsr case (latter is does not yet work
992        in all cases)
993    o pkg/kpp: add code to have mixing in shelf ice caverns
994      - add myThid to all kpp routines (long overdue)
995    
996    checkpoint59
997    o pkg/exf:
998      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
999        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1000      - move exf header files from lower_case.h to UPPER_CASE.h ;
1001        add missing cvs Header & Name
1002      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1003      - add namelist param. selectStressGridPosition, exf_monFreq
1004      - retire many _CLIM routines, and remove data.exf_clim
1005        + params moved to data.exf
1006        + climsst, climsss now handled by exf_set_gen, i.e.
1007          climss?period=0 refers to constant field,
1008          climss?period=-12 to monthly forcing
1009      - split up namelists in data.exf
1010    o pkg/seaice:
1011      - remove seaice_exch and seaice_exch_uv
1012      - remove superfluous exchange of theta
1013      - add myThid to seaice_budget_ocean/ice
1014      - add new interface for atmospheric wind forcing (C-grid only)
1015        + new routine
1016        + two new field (taux, tauy for stress over ice)
1017        + removed one global field (DAIRN) for C-grid case only
1018    o pkg/thsise
1019      - 2nd set of modifs for thsice adjoint in conjunction with exf
1020    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1021    
1022    checkpoint58y_post
1023    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1024      vertical diffusivity, similar to that in MOM4; turned on using
1025      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1026      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1027    o Added capability for 3D specification of background vertical diffusion
1028      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1029      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1030      "data" file that contains the 3D vertical diffusivity coefficients.
1031    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1032      - add code within pkg thsice to advect & diffuse sea-ice fields
1033      similar to (and will replace) what has been added in  seaice_advdiff.F,
1034      but: - conserving Mass, Heat & Salt.
1035           - better when using non-linear advection scheme (not yet fully tested)
1036           - can also be used in atmospheric set-up (for now, only the diffusion).
1037    
1038    checkpoint58x_post
1039    o IO option for global-file compact format:
1040      - add options when generating topology (utils/exch2/matlab-topology-generator)
1041      - add I/O capability (pkg/mdsio).
1042      - adapt utils/matlab/rdmds.m to read this format.
1043      for now long-line format not yet supported by pkg/mdsio (& exch2).
1044    o shelfice: add a few diagnostics
1045    
1046    checkpoint58w_post
1047    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1048      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1049      (and replace horiVertRatio in NH code).
1050      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1051                         and tutorial_plume_on_slope (sensitive to truncation)
1052    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1053      directly to drive seaice model (C-grid only)
1054    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1055     - reintroduce computation of wind from stress,
1056     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1057       mass points to avoid tau = 0
1058     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1059    o rdmnc.m: make it work with "global" files created with gluemnc
1060    o rdmnc.m : some improvements in dealing with singleton dimension
1061      (tested on all testreport mnc output files).
1062    o genmake2: disable pkg/profiles if netcdf test fails.
1063    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1064    o move call to cal_readparms up to make calendar parameters/variable available
1065      to all packages
1066    
1067    checkpoint58v_post
1068    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1069      useDynP_inEos_Zc tested.
1070    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1071    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1072      and portions thereof.  See read_cs.txt for description and examples.
1073    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1074      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1075      following the great-circle arc between those 2 points.
1076    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1077      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1078    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1079     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1080     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1081     - still needs work (not working with some options ; efficiency to improve)
1082       and serious testing.
1083     - use this scheme for temperature & salinity in 2 advection test exp.:
1084       advect_xy & advect_xz, respectively.
1085    
1086    checkpoint58u_post
1087    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1088    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1089    o testreport: add option "-skipdir" to skip some test.
1090    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1091      momentum calculation.
1092    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1093    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1094      remove checkpoint.F and the_correction_step.F (no longer used);
1095      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1096    o add option (linFSConserveTr) to correct for tracer source/sink due to
1097      Linear Free surface
1098    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1099    o pkg/thsice: fix reading mnc-pickups
1100    
1101    checkpoint58t_post
1102    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1103    o pkg/mdsio:
1104     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1105       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1106       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1107     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1108     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1109       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1110     - new S/R (to replace MDSWRITEMETA), which allows to write more
1111       informations (variable names, time ...) to meta files.
1112     - modify rdmds.m to give back the meta file content.
1113    o pkg/diagnostics: change vertical interpolation to be safer, and more
1114       flexible (define p-levels to interpolate to in data.diagnostics);
1115      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1116       diagnostic pointer.
1117    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1118    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1119    o fix multi-category seaice:
1120     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1121       SEAICE_MULTICATEGORY
1122     - fix short wave heat flux
1123    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1124       and allow to use EVP solver. Change forward lab_sea: test both EVP
1125       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1126    o Initial check-in of lab_sea adjoint
1127      (very similar to natl_box_adjoint/code_seaice)
1128      * used C-grid and EVP solver
1129      * used KPP, GM/Redi
1130      * uses inAdExact=.TRUE.
1131      * gradient checks fail for both ADM and TLM
1132        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1133        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1134        issue is related to forward mismatch between g77 an ifort
1135    o pkg/seaice: overhaul of thermodynamics
1136     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1137     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1138     - move a few global fields out of SEAICE.h into seaice_growth.F and
1139       make them 2D (FICE/QNETO/ ...)
1140     - remove FO (it is the same as QNETO)
1141     - introduce a few local fields to avoid modifying external fields such
1142       as atemp, etc.
1143    
1144    checkpoint58s_post
1145    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1146      changed exf_set_gen.F so that
1147        genperiod=0 means input file is one time-constant field and
1148        genperiod=-12 means input file contains 12 monthly means
1149    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1150      this affects truncation error ; generate new output file for exp. which
1151      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1152        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1153        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1154        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1155        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1156        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1157    o start implementation of deep-atmosphere and anelastic formulation
1158    o verification: remove 2nd copy of input files and use script "prepare_run"
1159      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1160    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1161    o profiles: fix for multithreaded case
1162    
1163    o diagnostics: rename few diags:
1164      s/'PRESSURE'/'RCENTER '/g
1165      s/'TICE    '/'oceFreez'/g
1166      s/'TAUX    '/'oceTAUX '/g
1167      s/'TAUY    '/'oceTAUY '/g
1168      s/'SWFLUX  '/'oceQsw  '/g
1169      s/DIFx/DFxE/g
1170      s/DIFy/DFyE/g
1171      and add few ocean-forcing diagnostics:
1172      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1173    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1174      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1175      as actual snow thickness.  It now refers everywhere to effective snow
1176      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1177    
1178    checkpoint58r_post
1179    o modifications to pkg/seaice/growth.F, which change results of
1180      lab_sea experiment: fixes pertain to melting snow over open water, to
1181      masking EVAP under sea ice, and to using the correct AREA variable for
1182      computations of EVAP, PRECIP, HSNOW, and GHEFF
1183    o add ability to read bathy, salt, and theta using MNC (off by def)
1184    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1185      both are turned off by default and do no change any results
1186    o seaice advection with pkg/thsice: a step toward the use of non-linear
1187      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1188    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1189      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1190      in natl_box (affects results @ truncation level: update output.txt)
1191    o multi-threading and IO:
1192      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1193      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1194        (needed to work with SingleCpuIO): tested in all verif. exp.
1195    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1196      affects the results (but none of the verification test uses this scheme).
1197    o Adding some pkg/diagnostics capability to pkg/seaice
1198      (will certainly be subject to changes)
1199    o ctrl: adding new control variables:
1200      lwflux, lwdown, evap, snowprecip, apressure, runoff
1201    
1202    checkpoint58q_post
1203    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1204      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1205      high_res_cube configuration by 4% on Columbia.
1206    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1207      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1208      dynamical allocation (seems to work in multi-threaded).
1209    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1210      single CPU io) so that TAF does not have to see EESUPPORT.h
1211    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1212    
1213    checkpoint58p_post
1214    o obcs: stop if obcs is used with useCDscheme = .true.
1215    o shelfice:
1216     - fix a sign error so that no slip at shelfice interface works
1217     - remove stop for combination non-hydrostatic code and shelfice. That does
1218       not mean, that the results are correct, but at least they are numerically
1219       stable
1220    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1221    o added adjoint exch routined for all exch*3d* routines
1222      and updated flow directives
1223    
1224    checkpoint58o_post
1225    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1226      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1227    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1228      and clean-up reading/writing of pickup files.
1229    o fix local version of read/write pickup (NH part) in rotating_tank/code
1230    o simplify EXCH interface:
1231     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1232     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1233    o added the regrid package
1234    o shelfice:
1235     - add a simple boundary layer scheme to reduce noise
1236     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1237    
1238    checkpoint58n_post
1239    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1240       local variable (not in common block).
1241    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1242      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1243      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1244        to work with SingleCpuIO.
1245    o add "_d 0" to real constant of pkg/cfc subroutines ;
1246       update exp. cfc_exemple & tutorial_cfc_offline output files.
1247    o multi-threading and IO:
1248      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1249        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1250      - barrier before and after reading.
1251      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1252      - avoid using MDS_WRITELOCAL for LAND pkg output.
1253      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1254        common-block variables ; Allows multi-threading with master-thread IO.
1255    o change default MAX_NO_THREADS from 32 to 4 ;
1256      and stop cleanly when MAX_NO_THREADS is too small.
1257    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1258    
1259    checkpoint58m_post
1260    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1261       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1262    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1263       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1264       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1265    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1266        add MITgcm_tutorials (= code + all the tutorials)
1267    o ecco, option to compute cost for total ssh (mean+anom)
1268    o consistent with addition of ptracer and ssh in pkg/profiles
1269    o profiles: adding ptracer and ssh
1270    o testreport: change multi-test output-file name
1271      (from output.txt.{name} to output.{name}.txt)
1272    o profiles: now ok for mutli-tiles case
1273    o seaice: add 4 parameters for different advection schemes for area,
1274      (effective) seaice thickness, enthalphy, and snow height. Their default
1275      is the standard parameter SEAICEadvScheme
1276    o calc_gw:
1277     - add cosFacU in zonal viscous flux (harmonic.visc.).
1278     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1279       of tutorial_plume_on_slope.
1280    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1281    o calc_gw: true flux-form, account for horizontal grid spacing.
1282      update rotating_tank results, but not plume_on_slope (affected at
1283      truncation level, 11 digits).
1284    
1285    checkpoint58l_post
1286    o calc_gw:
1287     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1288     - remove side-drag for now (need to fix it); update plume_on_slope results.
1289     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1290    o commit code to make SST/SSS weights spatially variable
1291      (based on either variable in-situ or variable initial T/S weights)
1292    o pkg/ecco:
1293      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1294        now based on horizontally varying weights wthetaLev, wsaltLev
1295      * cost_averagesflags now returns year indices in addition to day, month
1296      * sflux balance is performed on annual basis
1297        (sflxumm, sfluxmm2, bal_sfluxmm)
1298      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1299        including separate counting and multipliers
1300    o pkg/rbcs
1301      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1302    
1303    checkpoint58k_post
1304    o testreport:
1305     - always build in dir. "build" (if not there, mkdir build instead of building
1306       & running in input)
1307     - run in dir run (if it exists), in build otherwise.
1308     - call prepare_run (if input/prepare_run exists)
1309     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1310    o pkg/exf modifications to interpolation and rotation routines for more
1311       reasonable treatment of North Pole singularity: for tracers North Pole
1312       value is set to northernmost zonal-mean value, for zonal velocity it is
1313       set to zero, and for meridional velocity it is set to northernmost value.
1314    o pkg/exf/exf_check_range.F
1315     - add tile index to diagnostics and move stop statement to the very
1316       end of the routine.
1317    o pkg/diagnostics: (diagnostics_main_init.F)
1318      define title of isomorphic variables according to the current config.
1319    o pkg/thsice with pkg/seaice dynamics:
1320    - fix domain of computation (interior only, required for exf) and do exchanges
1321    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1322    o towards a standard way of dealing with multi-threading in MONITOR
1323      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1324    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1325       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1326    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1327    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1328    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1329       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1330    o tracer advection:
1331     - clean-up and simplify calc_common_factors.F
1332     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1333       advection subroutine (but still not used within DST advection S/R)
1334    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1335    
1336    checkpoint58j_post
1337    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1338      from file (collects calls previously in FORWARD_STEP)
1339    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1340    o adjoint store dir. adjusted accordingly
1341    o genmake2
1342      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1343    
1344    checkpoint58i_post
1345    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1346      on wind stress (SEAICEstressFactor defaults to 1.)
1347    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1348      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1349    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1350      on CS-grid: no longer loosing mass.
1351    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1352    o pkg/ggl90: fix sloppy output and fix a bug
1353    o pkg/seaice: added SEAICEuseEVPpickup parameter
1354      - Set to false in order to start EVP solver with
1355        non-EVP pickup files when using SEAICEuseEVP
1356      - fix sign error in diffusion in seaice_calc_rhs
1357    
1358    checkpoint58h_post
1359    * Modifications for bottom topography control
1360      o replace hFacC by _hFacC at various places
1361      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1362      o add non-self-adjoint cg2d_nsa
1363      o update autodiff support routines
1364      o re-initialise hfac after ctrl_depth_ini
1365      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1366    * Adding verification for 5x5 box (4-layer) bottom topography control
1367    
1368    checkpoint58g_post
1369    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1370       used for mean seasonal cycle, mean diurnal cycle); add an example
1371       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1372    o pkg/ggl90:
1373      - add parameter (minimum surface kinetic energy)
1374      - fix bug (avoiding division by zero)
1375    o couple pkg/thsice to pkg/seaice:
1376      - modify advection in seaice to accomodate new scalar fields to be advected
1377      - only muliDimAdection scheme work with seaice/thsice
1378      - mapping of thsice-variables to seaice-variables, back and forth
1379      - does not break the verification experiments, but does not give the
1380        desired results either
1381    o pkg/seaice
1382      - make (default) second order advection a bit less confusing?
1383    
1384    checkpoint58f_post
1385    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1386      to pkg/seaice):
1387      - new routines thsice_map_exf and thsice_get_exf provide the interface
1388      - add an additional formal parameter to thsice_solve4temp
1389    o pkg/exf:
1390      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1391      - correct Stefan-Boltzmann constant
1392      - new parameter for longwave surface emittance
1393      - separate some stuff from exf_bulkformulae into new routines  
1394        exf_radiation, exf_wind
1395      - add new parameters and constants: longwave emissivity for ocean, ice
1396        and snow, evaporation parameters over ice
1397      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1398        either wind from stress or stress from wind
1399    o pkg/thSIce:
1400    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1401    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1402       and THSICE_CALC_THICKN
1403    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1404    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1405      to make debugging easier.
1406    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1407    o pkg/bulk_force:
1408      - clean-up comments and parameters ;
1409      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1410    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1411      generate new output for test-experiment: aim.5l_cs.thSI
1412    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1413      testreport accordingly
1414    
1415    checkpoint58e_post
1416    o SEAICE_CGRID adjoint done
1417    o R_STAR adjoint implemented.
1418      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1419      * need to sort out init. of h0facc, etc.
1420    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1421      to be able to use it in pure forward.
1422    
1423    checkpoint58d_post
1424    o upgrade simple test-experiment to tutorial example:
1425     step.1: duplicate the experiment and (step.2) will remove the old copy.
1426      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1427      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1428      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1429      tutorial_global_oce_biogeo    <- copy of dic_example
1430      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1431      tutorial_plume_on_slope       <- copy of plume_on_slope
1432      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1433      tutorial_global_oce_optim     <- empty for now (David ?)
1434      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1435     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1436    o correct a sign problem in cost_scat.F
1437    o obcs and ptracers: fix boundary conditions for advections schemes
1438      with larger stencil
1439    o thsice adjoint: start
1440    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1441      completeness
1442    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1443      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1444    o ptracers adjoint:
1445      * avoid extensive recomputatations
1446      * fix missing re-init. of gptr (missed by TAF)
1447    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1448      me to turn off the excessive output to STDOUT that this package produces
1449    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1450      and add those terms in Vector-Invariant formulation.
1451    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1452      if the control period (xx_hfluxperiod etc) is 0
1453    o in profiles pkg, clean routines and fix details
1454    o in ecco pkg, reading ssh data:
1455      fix problem in case the model does not start at iter0=0
1456    o fix mnc-pickup/restart for ptracers
1457    o new package prifiles:
1458      code to compute profile-based cost by Gael Forget
1459      (modifs in ecco, ctrl, autodiff)
1460    o Benign bug fix in initialization (spotted by M. Mazloff) of
1461      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1462    
1463    checkpoint58c_post
1464    o adjoint: finish NLFS adjoint and provide reference output in
1465      verification/global_ocean.90x40x15/results_ad_nlfs
1466    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1467      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1468      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1469      with SEAICE_CGRID defined.
1470    o move calendarDumps from "data" to "data.cal" and clean-up the code
1471      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1472    o add useEXF & useCAL flags (for now, set in hard-coded way)
1473    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1474      (were missing in NH mode, and wrong in quasihydrostatic mode).
1475      waiting for Chris updated version of calc_gw to add those CALLs.
1476    o fix bug in quasihydrostatic S/R ;
1477      add a test for this option: global_ocean.90x40x15.qshyd
1478    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1479      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1480    o add on/off flag useOffLine for package OFFLINE
1481    o seaice:
1482      - modify advection so that it works also on the C-grid
1483      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1484        problem in multi-tile runs with C-grid
1485      - add flags for clipping ice velocities and/or masking solver forcing
1486      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1487        C-grid solver
1488      - added a few comments to seaice_diffusion.F
1489      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1490        are now exclusive)
1491      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1492        required re-ordering the code a little:
1493       + make DAIRN global variable (defined in SEAICE)
1494       + move computation of the viscosities eta and zeta into a new separate
1495         routine (because I need to recompute them in seaice_ocean_stress.F)
1496    
1497    checkpoint58b_post
1498    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1499      update output.txt of exp. aim.5l_cs.thSI
1500    o various mnc cleanups and improvements:
1501      + shrink lookup tables by factor of ~4
1502      + better error reporting when running out of lookup space
1503      + able to handle longer path/file names (up to 500 chars)
1504    o adjoint:
1505      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1506      - TBD: "hidden" mom_vecinv recomp. in dynamics
1507    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1508     (allow to differentiate between forcing components using new integer flags:
1509      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1510     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1511    o ecco
1512      - enable trend removal from SSH anomaly obs.
1513    o adjoint
1514      - a fix for PmEpR when #undef EXACT_CONSERV
1515      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1516      - try to fix "hidden" recomp. in forward_step for NLFS
1517        (NLFS seems broken sometimes after I checked it in)
1518    o seaice:
1519     - add c-grid version of the dynamic solver:
1520       + three new routines that are the c-grid substitute lsr, dynsolver
1521         and ostres
1522       + put a few fields that were local to dynsolver into global common
1523         blocks, so that I can move the computation of stresses etc into
1524         seaice_lsr (saves coding but may break the adjoint).
1525     - replace more hardwired parameters by runtime parameters
1526     - add ice masks that mask the rhs of the implicit solvers where there
1527       is no ice (commented out in seaice_dynsolver, because i am not sure
1528       if this works properly), eventually this should replace the clipping
1529       of ice velocities in seaice_dynsolver to +/-40cm/s.
1530    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1531      include it only where its needed
1532    o move balancing of fluxes before the call of external_forcing_surf
1533    o seaice:
1534      - correct units of turning angles (now they are really in degrees)
1535      - move computation of GWATX/Y out of main routine into dynsolver
1536      - initialize GWATX/Y in seaice_init
1537    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1538      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1539    o seaice: add runtime flags for turning angles (default to zero)
1540    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1541      and trend from exf forcing and ctrl control adjustments
1542    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1543      (since checkpoint57x_post)
1544    o change the default rotation period to 86164.s = the Earth rotation
1545    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1546      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1547    o seaice advection: add code for choosing between the default (2nd order
1548      central differences) and multiDim advection schemes provided by
1549      pkg/generic_advdiff
1550    o seaice:
1551      - removed all references to SEAICE_GRID.h fields from
1552        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1553        (cubed-sphere configuration will change a little)
1554      - grid computations in seaice_init are obsolete now.
1555      - cleaned up code a little so that is easier to read (hopefully).
1556      - added new (better?) discretizations of default advection and diffusion
1557        (turn on with SEAICEuseFluxForm)
1558      - replace 1 in 3d global fields by kSurface in growth.F
1559      
1560    checkpoint58a_post
1561    o seaice:
1562      - bug fix in advect.F
1563    o shelfice:
1564      - separate shelfice load anomaly from pload (breaks with time
1565        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1566        Its default is 0., but it may be computed more cleverly from (unknown)
1567        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1568        done offline. A good approximation of the pressure load anomaly is
1569        necessary to avoid large initial adjustment processes underneath
1570        deep-reaching shelfice.
1571      - small fix in ISOMIP shelfice_thermodynamics
1572      - add more sophisticated thermodynamics of Hellmer (1989), this is
1573        now the default
1574      - give a few constants more intuitive names
1575    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1576      if bulk formulae are used in long integration (especially EmPmR). Turn
1577      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1578      if balancePrintMean, the imbalance that is substracted is printed to
1579      STDOUT.
1580    o fix bug (typo) in obcs_apply_eta.F
1581    o add a new package shelfice which enables us to model the circulation
1582      underneath shelf-ice with draughts of hundreds of meters.
1583     - works
1584     - to do: + include improved thermodynamics
1585              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1586                instead of new field kTopC
1587              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1588                instead of new field R_shelfIce and new code in ini_depth.F
1589                and ini_mask_etc.F?
1590              + adjust vertical mixing schemes?
1591    o seaice pkg:
1592     - add a cpp-flag to include a simple formula for a salinity dependent
1593       freezing point of sea water at the surface
1594     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1595       meridional stresses are now different (and hopefully correct)
1596    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1597       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1598       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1599    o pkg/diagnostics: add options and parameters for regional-statistics
1600       diagnostics ; define regions by reading a region-mask from a file
1601       (might add other options later)
1602    o pkg/bulk_force:
1603     - add option and parameters to use AIM surface-flux formulae.
1604     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1605       others forcing fields (defined in PARM05, parameter file "data") are loaded
1606       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1607     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1608     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1609     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1610       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1611     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1612    
1613    checkpoint58
1614    o add "--embed-source" option to genmake2 which, when the supporting
1615      tools can be compiled (as determined by genmake2) will turn on the
1616      embed_files package which then embeds the entire MITgcm source code
1617      (*.[fFhc] + Makefile) used for the build within the executable
1618      - requested by CNH but off by default
1619      - adds a paltry <9MB to the mitgcmuv executable in most cases
1620      - only writes the output when useEMBEDSRC in eedata is true
1621    o clean up 3-dim. relaxation codes:
1622      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1623      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1624      * Thanks to Tom Haine for testing!
1625    
1626    checkpoint57z_post
1627    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1628      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1629    o fix the pickup behavior for obcs in combination with ptracers
1630    o fix a bug in ptracers_external_fields_load
1631    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1632      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1633    o transfered surface NH pressure to eta field (if exactConserv).
1634    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1635         and update lab_sea output.txt file.
1636    o completing 3-dim. relaxation code: additional term
1637         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1638      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1639      * At compile time, in "EXF_OPTIONS.h" set
1640          #define  ALLOW_CLIMTEMP_RELAXATION
1641          #define  ALLOW_CLIMSALT_RELAXATION
1642      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1643          tauThetaClimRelax3Dim = 15552000.0,
1644          tauSaltClimRelax3Dim  = 15552000.0,
1645      * 3 cases:
1646          1) Use a constant-in-time 3-dim. field
1647          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1648          3) Real-time relax. to time-evolving prescribed field
1649    o Adding Laplacian-type smoothness constraint on
1650      initial and boundary (forcing) controls (ic, bc)
1651      * enable at compile-time via
1652        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1653      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1654      * Absolute scale somewhat unclear so far
1655      * no area weighting was included since no other cost term does so far
1656    
1657    checkpoint57y_post
1658    First step for a NLFS adjoint
1659    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1660    o new init. routines for calc_r_star, calc_surf_dr
1661    o still need to deal with ini_masks_etc
1662    o testreport seemed happy
1663    checkpoint57y_pre
1664    
1665    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1666    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1667    o add new offset feature to offline pkg (plus minor cleanup)
1668    o cfc fixes for final year of integration
1669    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1670      be in GCHEM_OPTIONS).
1671    
1672    checkpoint57x_post
1673    o fix testreport Pb in multiple test experiment.
1674    o cleanup our namelist syntax in verification:
1675      - make it more F95 standards compliant (some work still needed)
1676      - allows the vast majority of our tests to work with gfortran
1677    o Non-Hydrostatic:
1678     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1679     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1680    o Allow to apply AB on T,S rather than on AB(gT,gS):
1681     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1682     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1683       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1684     - need a "clever" read_pickup to restart from the other AB formulation
1685    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1686    o remove some unused variables (reduces number of compiler warnings)
1687    o adjoint
1688      * Disable useVariableViscosity for adjoint for time being
1689        (there are a number of extensive recomputations)
1690      * Initialize certain variables needed for adjoint
1691    
1692    checkpoint57w_post
1693    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1694                 fix the singleCpuIO RS version of MDSWRITEFIELD
1695       and add a WARNING if using globalFiles=T with multi-processors.
1696    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1697      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1698    o tracer advection scheme:
1699      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1700       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1701       was not very convenient).
1702      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1703       (further tests needed for the implicit DST & Flux-Limiter schemes).
1704    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1705      and sRef for convenience, handy, when you want to initialize
1706      ptracers in a large domain with a constant non-zero value. Also,
1707      untangle ptracers_init.F a little.
1708    
1709    checkpoint57v_post
1710    o change dome exp. to use variable viscosity in side-drag terms.
1711    o remove all the files from the cfc_offline test since they are now
1712      incorporated into tutorial_cfc_offline which has been producing
1713      identical results for a few days of testing
1714    o add new parameter: sideDragFactor to enable half-slip-side BC
1715      and change side-drag S/R to use viscosity from mom_calc_visc
1716      (can switch back by setting sideDragFactor=0.); affects results at
1717      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1718       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1719    o vorticity & strain are now computed without masking, to account for
1720      no-slip-side BC in variable viscosity calculation ; mask is applied
1721      anyway later on, before computing advection/coriolis terms.
1722    o modify exp4 to test new obcs support for reading from external files
1723      and for passive tracers
1724    o fix behavior of ptracers_monitor when monitor output is written to a
1725      netcdf-file; still not independent of monitor.F (writes in the same
1726      file).
1727    o change default value of tRef (put a uniform, meaningful value for ocean
1728      & atmos) and initialize sRef (was missing, as Martin mentioned).
1729    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1730      to be proportional to enstrophy dissipation length.  Thus,
1731       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1732      This is now consistent with Smagorinsky and with the manual.
1733    
1734    checkpoint57u_post
1735    o OBCS and PTRACERS: add open boundary support for passive tracers
1736      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1737        OB-values from file; this is not different from the way theta and salinity
1738        are treated
1739      - however, Orlanski-radiation conditions are not supported, and the model
1740        will stop if you use pTracers and Orlanski at the same time.
1741      - beefed up the rountine obcs_external_fields_load: now only those open
1742        boundary values are overwritten with values from files for which there
1743        are really files, otherwise the OB-fields remain untouched. This makes
1744        it possible to use different OBs at different ends of the domain (as
1745        with EXF)
1746    o reduce number of exch calls in shap_filt (s2).
1747    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1748      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1749    
1750    checkpoint57t_post
1751    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1752    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1753      same truncation, independent of the face number: affects affects several
1754      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1755    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1756      note that biharmonic viscosity + no-slip was not tested in any experiment.
1757    o fix bug in non-linear free-surf side-drag ; generate new output for
1758      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1759    o make mnc honor the writeBinaryPrec flag for most kinds of output
1760    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1761    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1762      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1763    o add brackets in multi-terms sum to get same truncation, independent of
1764      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1765      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1766    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1767      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1768      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1769      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1770      Suggested values of viscosity parameters found in mom_calc_visc.
1771      Many new viscosity diagnostics available.
1772    
1773    checkpoint57s_post
1774    o Add clearing-house for viscosity calculations, mom_calc_visc and
1775      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1776      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1777      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1778      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1779      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1780      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1781      ViscAhStrain and viscAhTension are now retired.
1782    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1783    o In response to JMC's bug report, genmake2 now ignores any soft-links
1784      that it finds in the *current* directory when searching for files.
1785      Soft-links found in any other source directories will still work as
1786      they did before.
1787    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1788      a C routine to unlimit the stack size
1789    o mnc-ify pkg/aim snapshot vars
1790    o mnc-ify pkg/land as requested by Daniel
1791    o various changes to mnc including:
1792      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1793      - output can now be grouped so that all files within a group
1794          change the ITER portion of their names in lock-step together
1795      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1796          and works with both EXCH1 and EXCH2 (but needs more testing)
1797      - writing works for all verification test cases w/ g77 on Linux
1798    
1799    checkpoint57r_post
1800    o make MNC variable initialization happen earlier
1801    o add diagnostics for (almost) each term of the momentum Eq.
1802    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1803    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1804    o remove MINIMAL_TAVE_OUTPUT option ;
1805      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1806    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1807      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1808    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1809    o add time-dependent SST, SSS control
1810    o cost terms in ecco/ modularized (new cost_generic.F)
1811    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1812    o new infrastructure for seaice model vs. obs misfits in seaice/
1813      * driver from the_main_loop.F is seaice_cost_driver.F
1814      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1815      * gradient check in Exp. 6a of natl_box_adjoint/
1816    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1817      (see README file)
1818    
1819    checkpoint57q_post
1820    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1821    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1822      - bug was reported by Jean-Michel and Ian Fenty
1823    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1824      update exp. cpl_aim+ocn output.
1825    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1826      Needed for high-res. runs with large global files
1827      to be able to limit tapelev size
1828    o Changed some tests for adjoint:
1829      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1830      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1831      * global_ocean.90x40x15/ back to default 3-level checkpointing
1832    o Modifications to enable scripted COMMON to MODULE conversion
1833      * verification/OpenAD/code/ has necessary scripts and description;
1834      * converts, compiles and runs successfully;
1835    
1836    checkpoint57p_post
1837    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1838    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1839      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1840    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1841    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1842      (was already the case for dissipation with mom_vecinv,
1843       and also the case for grad.PhiHyd when staggered-timeStep)
1844      This will allow to put dissipation out-off the AB time-stepping.
1845     Unfortunately, affects truncation error. Update output of exp. that "fails"
1846      (cg2d matching number) and leave the others for later: front_relax(10),
1847      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1848      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1849    
1850    checkpoint57o_post
1851    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1852      (2) its ready to be documented during the 20050801 DocFest
1853    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1854      for ideal_2D_oce and lab_sea on linux_ia32_g77
1855    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1856      in global1x1_tot/code_seaice_adj to access indices 32, 33
1857      (worth another tag)
1858    
1859    checkpoint57n_post
1860    o adding precip control xx_precip 32
1861    o adding swflux control xx_swflux 33
1862    o Replacing 10 forcing penalty cost routines by 1 generic.
1863    o Implementing partitioning in time-mean and variable adjustment
1864      for atmos. state.
1865    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1866  o in natl_box_adjoint:  o in natl_box_adjoint:
1867    * updated: results_bulk/    * updated exp 1 to 10
1868    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1869    o updated global1x1/*_seaice_adj/
1870      to incorporate latest changes
1871    o enable useSingleCpuIO for mdsio vector routines
1872      (applies in particular to tapelev I/O)
1873    o removed inefficient K-loop in all active_file*control*.F
1874    
1875  checkpoint57m_post  checkpoint57m_post
1876  o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)  o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
# Line 591  o add two new packages Line 2453  o add two new packages
2453    - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme    - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2454    - these scheme operate in a similar manner as KPP (without ghat, of    - these scheme operate in a similar manner as KPP (without ghat, of
2455      course), however there is only one diffusivity that is used for both      course), however there is only one diffusivity that is used for both
2456      temperature and salinity (and passive tracers)ç      temperature and salinity (and passive tracers)
2457  o add offline package  o add offline package
2458  o add "verification/dic_example" which contains a dic-gchem-ptracer setup  o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2459    provided by Stephanie Dutkiewicz    provided by Stephanie Dutkiewicz

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