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revision 1.82 by mlosch, Mon Aug 19 14:21:30 2002 UTC revision 1.1056 by jmc, Tue Jan 27 15:41:52 2009 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
8      (maintain temporary backward compatibility, until next checkpoint)
9    
10    checkpoint61h
11    o pkg/diagnostics with "periodic averaging diagnostics":
12      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
13    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
14    o pkg/obcs: fix loop ranges for balancing code
15    o pkg/flt:
16     - improve criteria for finding which tile owns a float.
17     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
18    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
19      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
20      with ocean biogeo)
21    o pkg/flt:
22     - do some cleaning and fix the restart ;
23     - add output.txt in flt_example/results to get this pkg tested.
24    o genmake2: add an EXTENDED_SRC option and flag.
25       for now, cannot be turned on on command line (only through genmake_local)
26    o pkg/mdsio: read/write vector:
27     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
28     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
29       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
30     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
31      (drop to 4 digits matching for grad). But this test does not look very
32      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
33    
34    checkpoint61g
35    o pkg/flt:
36      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
37       + make OPTIONS file more standard.
38      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
39      - fix _BYTESWAPIO CPP-Flag
40      - standard reading of file-parameter "data.flt"
41      - fix argument list of S/R FLT_RESTART
42      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
43    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
44    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
45      a still unfixed compiler/optimization bug
46    
47    checkpoint61f
48    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
49      update results of global_ocean.cs32x15.icedyn test.
50    o move getcon.F from model/src to pkg/fizhi.
51    o pkg/exf: add parameter for extrapolation of temp up to the surface
52       and option to prevent negative evap (in bulk_largeyeager04 only).
53    o Prather Advection scheme: fix tracer conservation for divergent flow
54      (e.g., when using NonLin Free-Surface).
55    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
56    o gmredi (Visbeck-variable-K):
57     - add more parameters to Visbeck-variable-K.
58     - use a 5 points average for dSigmaR in Visbeck-K calculation
59       (more "homogenous": same stencil and same weights as in dSigmaH)
60     - update output of ideal_2D_oce experiment.
61    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
62      (#undef REAL4_IS_SLOW)
63     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
64       coordinate variable
65     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
66       (surface forcing fields), removes some of the functionality
67     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
68     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
69       probably not all: copy _RS surface flux fields to RL field before
70       calling DIAGNOSTICS_FILL
71     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
72       real*4 (CALL EXCH_*_RS) versions.
73     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
74       (generate new output).
75    
76    checkpoint61e
77    o gmredi (Visbeck-variable-K):
78      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
79      - change computation of Visbeck-K where Slope > Smax :        
80        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
81        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
82    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
83      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
84    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
85    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
86      does not become too large (to avoid precision problems in implicit-diffusion
87      solver); update ideal_2D_oce output.
88    o pkg ggl90:
89      - in ggl90_cal.F: compute only one set of visc/diff, used to
90        step forward TKE/T/S/momentum
91      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
92        have Prandlt =1)
93    o gmredi (fm07):
94      - add lower limit on Transition layer thickness + lower limit on 1/lambda
95      - allow to set few more params from data.gmredi
96    o pkg ggl90:
97          - add missing sqrt(2) factor in computation of mixing length
98            scale in ggl90_calc.F
99            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
100    
101    checkpoint61d
102    o adjoint modifs
103      - adapt to new field rhoInSitu
104      - allow to revert from StoreDynVars2D, StoreDynVars3D
105        to individual fields
106        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
107    o store 3-D (in-situ) density in commom block (DYNVARS.h)
108     - save 1 rho computation.
109     - no longer modify T & S inland when using down_slope pkg.
110    o gad_som : allow to switch to SOM advection for T & S without corresponding
111      pickup files (using new S/R: MDS_CHECK4FILE).
112    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
113      (for useSingleCpuIO to work in multi-threaded)
114    o pkg/shelfice:
115     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
116       with SHELFICEtopoFile in data.shelfice
117     - move code for reading ice shelf topography and modifying hFacC into separate
118       subroutines of the shelfice package
119     - separate initialisation of "fixed" and "variable" variables
120     - kTopC is not (yet) replaced by kSurfC, although this is possible
121    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
122    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
123      and rename:
124      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
125      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
126    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
127    
128    checkpoint61c
129    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
130      to add mass source/sink of fluid in the interior (3-D generalisation
131      of oceanic real-fresh water flux).
132    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
133    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
134    o new pkg: down_slope
135      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
136      - presently, modify T & S inland (dwnslp_calc_rho.F).
137        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
138      - implementation for ocean in P-coords not tested.
139      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
140    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
141      (to facilitate conversion of oceanic pkg to p-coordinate).
142    o change FIND_RHO to FIND_RHO_2D :
143      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
144    o new pkg: cheapaml
145    
146    checkpoint61b
147    o exch2:
148      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
149      - no longer depend on the order sequence (N,S,E,W).
150      - 3rd exchange no longer needed (tested with 24 tiles).
151      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
152      - exch_UV_A-grid readily available (but not yet tested).
153      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
154      (both are no longer needed) in exch_uv: no effect in forward run; but
155       get truncation error differences with adjoint exch.
156    o exch2:
157     - change index-bounds storage (moved from target to local tile,
158       more intuitive this way) ; rename/remove some variables.
159     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
160    
161    checkpoint61a
162    o exch2/matlab-topology-generator:
163      fix bug in index bounds for N-S internal exchange (hard to tell if this
164      had any effect on the solution).
165    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
166      is exceeded
167    o testreport: modify syntax of awk, so that it works also with
168      awk, and not only with nawk and gawk
169    
170    checkpoint61
171    o autodiff
172      Change default for TAF usage by removing argument '-nonew_arg'
173      This changes TAF subroutine argument list (ordering of active var.)
174      Omission of this flag leads to incompatibility w.r.t. TAMC
175      To restore TAMC-compatibility, need following modifs:
176      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
177      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
178      Tested TAF version is 1.9.22
179      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
180    
181    checkpoint60
182    --->>> This is the last checkpoint for which generating the adjoint
183    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
184    --->>> by default.
185    --->>> Future checkpoints will ommit this flag by default.
186    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
187    o pkg/grdchk: Add gradient check to etan0 perturbations.
188    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
189    o pkg/autodiff: more flexibility in zeroadj.
190      model/src: modifying do_oceanic_phys.F accordingly.
191    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
192    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
193      special setup of gmredi for which the adjoint is stable
194      enough for parameter optimization.
195    o bridging the gap between eddy stress and GM.
196      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
197          along with a change in CPP option (now ALLOW_EDDYPSI).
198      -> when using GM w/ GM_AdvForm:
199          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
200          is applied either in the tracer Eq. or in momentum Eq.
201          depending on data.gmredi (intro. GM_InMomAsStress).
202      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
203      The key modifications are in model/src/taueddy_external_forcing.F
204      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
205    
206    checkpoint59r
207    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
208      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
209      fix option to read coriolis(@ cell-corner) from files with CS-grid.
210    o pkg/mnc: add some attributes to standard 1D-coordinate variables
211    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
212      mass points, when using mnc for output
213      - add runtime parameter (missing_value, missing_value_int) to override
214        default (which is the value of getcon('UNDEF'))
215    o pkg/mnc: prepare mnc for the actual use of missing values with the
216      diagnostics package: small fix in mnc_cw_readwrite.template and more
217      initialisation of never used fields
218      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
219      versions
220    o pkg/thsice/thsice_ini_vars.F added default initial values so that
221      thermodynamics sea ice solver does not blow up when some initial fields
222      are missing.
223    o move from external_forcing_surf.F to ini_forcing.F
224      the p-coord. hack consisting in using pLoad to set phi0surf ;
225      update output of tutorial_global_oce_in_p (affected @ truncation level).
226    o Freshen up a bit hs94.1x64x5, notably:
227      remove rotationPeriod and tRef=5*0. (adjoint only), and add
228      exactConserv=.TRUE.
229    o pkg/generic_advdiff:
230      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
231      applies to files where Temperature & Salinity 2nd Order moments are used.
232    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
233      this uses a dynamically allocated internal state data structure
234      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
235      and requires a fortran 90 compiler
236    
237    checkpoint59q
238    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
239       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
240    o Refresh tutorial_global_oce_biogeo, notably:
241      - change bathymetry (put back seamounts in ACC, use hFacs)
242      - change EOS (POLY3 --> JMD95Z)
243      - use Bryan-Lewis vertical diffusivity
244      - use multidimensional advection
245      - remove old virtual virtual in dic pkg, now done through ptracer pkg
246      - change a couple of parameters in dic pkg
247    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
248    o pkg/obcs: change default to OBCSfixTopo = .true.,
249      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
250      - replace "debugMode" with "debugLevel .GE. debLevB"
251    o implementation of TAF directives for gchem,cfc,dic
252    o remove "exp5" (replaced by tutorial_deep_convection).
253    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
254      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
255      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
256      --> changes results in exp4, seaice_obcs
257    o tutorial_deep_convection :
258      update the set-up and increase resolution and domain size ; start
259      from pseudo initial conditions = output at t=120mn in order to see
260      something happening when running testreport.
261    o pkg/seaice: add os7mp as an advection scheme
262                  add check for advection schemes
263                  add a flag for restoring T and S underneath sea ice
264    o pkg/my82: add netcdf-support and diagnostics
265    o thsice pkg:
266      - Now hsMax limits snow height by turning it into ice following
267        flooding scheme (and now conserving energy)
268      - Slight rewriting of the formula in thsice_calc_thick.F
269      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
270      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
271    
272    checkpoint59p
273    o gchem / dic / cfc :
274      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
275      - add new parameter files: "data.dic" & "data.cfc" ;
276      - various re-arrangement in initialisation & header file ;
277      - fix tutorial_global_oce_biogeo for multi-threaded test.
278    o pkg/dic: test for "pickup_dic" file when restarting ;
279      if no pickup-file, can restart with a re-initialised pH (same as it did
280      before) providing pickupStrictlyMatch is set to False.
281    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
282      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
283    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
284      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
285    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
286     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
287       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
288    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
289       scheme to use for vorticty-term ;
290     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
291       (with default selectVortScheme, return to original discretisation)
292     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
293    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
294    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
295      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
296      also fix diagnostics VISCAHW & VISCA4W.
297    
298    checkpoint59o
299    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
300    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
301      move a few statemens out the main loop into separate loops
302    o pkg/shelfice:
303      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
304        (kg/m^2/s), does not break tests, because in verification/isomip,
305        rhoConstFresh=rhoConst (by accident)
306      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
307      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
308        new file model/src/seawater.F, so that they are available for all pkgs.
309      - convert potential temperature into in-situ temperature. This changes the
310        isomip tests => update tests
311    o add a flag writePickupAtEnd (default=true) to be able to suppress
312      writing a pickup at the last timestep
313    o tools/mpack-1.6 :
314      - disable automake (not working) and autoconf (not needed).
315      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
316        also cleaner with much less compilation warnings.
317    o pkg/profiles:
318      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
319      (for "less than 32 characters name" compiler requirement)
320    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
321      conditions that have a different sampling frequency than S/T/U/V obcs
322    o pkg/diagnostics (stats-diags):
323      - fix global Min/Max in case 1 processor get only empty tiles
324    o genmake2: replace (4 times)
325         make genmake_tc_1.o >> genmake_warnings 2>&1
326      with
327         COMM="$CC $CFLAGS -c genmake_tc_1.c"
328         echo $COMM >> genmake_warnings
329         $COMM >> genmake_warnings 2>&1
330      to make genmake2 always see the value of CC as specified in the optfile.
331    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
332      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
333      - modify verification advect_cs test to test SOM-advection on CS-grid.
334    o pkg/ctrl:
335      - Rewrite of ctrl_map_ini_ecco.F,
336        introducing a generic routine (ctrl_map_ini_gen.F).
337      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
338    
339    checkpoint59n
340    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
341      number in dedicate array "hdiag":
342      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
343        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
344      - many small changes (integer format) for large number of diagnostics
345      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
346        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
347    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
348      usingSphericalGrid, this allows to define the rotated grid coordinates
349      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
350      geographical coordinates according to the inverse of the rotation defined
351      by the Euler angles, so that Coriolis parameter and online-interpolation by
352      exf works with the geographical coordinates on XC/YC/XG/YG.
353      Naturally, this feature does not work with all packages, so some
354      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
355      profiles), because there the coordinates are assumed to be regular
356      spherical grid coordinates.
357    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
358      - introduce isopycnal diffusion coefficient control.
359    o tools/adjoint_options:
360      - additional control vector components.
361    o pkg/mnc: have mnc create marginally meaning full coordinate variables
362      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
363    o pkg/mypackage:
364      - add example of read/write pickup for state-var ;
365      - add entry points to the main code for state-vars diags & write-pickup.
366    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
367      transitions for useExfYearlyFields
368      - add new subroutine that determines the file to read from for
369        use*YearlyFields = .TRUE. and .FALSE.
370      - add a verification experiment to global_with_exf that tests
371        useExfYearlyFields with USE_EXF_INTERPOLATION defined
372    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
373      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
374      subroutines (which could be generated from a template, because they are
375      almost identical), for now they are included in obcs_prescribe_read.F for
376      simplicity
377    o pkg/exf:
378      - add a little more diagnostic to exf_interp_read (in analogy to
379        mds_read_field, can be turned off with debugLevel < debugLevA=1)
380      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
381        ugly but fast by unrolling short inner loops, inserting a unroll=8
382        directive in routine lagran, and splitting a loop and making do while the
383        outermost loop (the latter requires the intoduction of index arrays)
384    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
385    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
386      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
387    o verification/seaice_obcs: updated for restart test and latest options
388    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
389      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
390      for now this is only available for the C-grid code and also within
391      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
392    
393    checkpoint59m
394    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
395      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
396    o gad_som : fix flux output (& diagnostics) to have same units as other  
397      advection scheme fluxes (was previously multiplied by deltaT).  
398    o added verification/seaice_obcs both to test seaice open boundaries
399      and to provide an example matlab scrpt for generating them
400    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
401    o pkg/salt_plume: clean up salt_plume_frac.F to
402      remove redundancy in PlumeMethod 1 and 4
403    o pkg/kpp: added saltplume diagnostics
404    o pkg/obcs and pkg/seaice:
405      - do not set uice and vice to zero when OB*icefile are unspecified
406      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
407      - moved seaice tracer obcs after call to seaice_growth
408    o pkg/salt_plume: added various options for salt plume depth
409      criterion and for vertical distribution of the salt
410    
411    checkpoint59l
412    o pkg/ptracers: new version of ptracers pickup:
413      read meta file and write only fields which are needed to restart.
414      ( same logic as main pickup file ; also using pickupStrictlyMatch )
415    o pkg/seaice:
416      - add timescale for melting due to warm mixed layer as a means of
417        setting SEAICE_availHeatFrac more conveniently
418      - add a CPP-flag/runtime parameter check for flooding algorithm
419      - reformulated availHeat in seaice_growth.F to be independent of AREA
420    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
421      unit changes
422    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
423    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
424      SX vector computer.
425    o pkg/seaice:
426      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
427        seaice forcing fields can now be read only through pkg/exf
428      - removed some unused halos
429    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
430    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
431      or U/VICE from U/VWIND before computing U/VSTRESS
432    
433    checkpoint59k
434    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
435      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
436    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
437      all experiments pass when compile with un-initialised var. checking option.
438    o added pkg/salt_plume
439    o script to test restart (for now, in MITgcm_contrib/jmc_script)
440    o pkg/seaice: new read/write pickup version.
441      read meta file and write only fields which are needed to restart.
442      ( same logic as main pickup file ; also using pickupStrictlyMatch )
443    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
444    o lab_sea.hb87: modify the domain & update output.hb87.txt :
445      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
446      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
447      process. Fixed here by closing the domain at the Northern boundary.
448    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
449    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
450      a set of consecutive levels in/from a 3-D array.
451    o pkg/ptracers:
452      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
453      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
454    
455    checkpoint59j
456    o in pkgs: dic, obcs, offline, rbcs:
457      standard way to compute coeff. for time interpolation between 2 time reccords
458      which retains full precision (& make results less dependent on compiler).
459      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
460    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
461      packages instead of reading ice cover and wind speed separately
462    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
463     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
464      to allow to compile customized code before the update)
465    o cleaning-up:
466      - fix CPP instruction syntax in pkg/obcs
467      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
468        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
469      - fix some threads issue in IO parts.
470    o pkg/dic:
471      - add tons of "_d 0" (--> much better testreports !)
472       and then update outputs of tutorial_global_oce_biogeo
473    o pkg/mom_fluxform:
474      add a special version of momentum advection intended to conserve momentum
475      next to a bathymetry step or a coastline edge. (default = off = #undef)
476    o new read/write pickup version:
477      - for now, only implemented for main (mdsio) pickup file.
478      - write out only what is needed to restart; merge pickup_nh , pickup_ph
479        and main pickup together.
480      - read meta file; read only what is needed to restart; stop if a field
481        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
482        if it make sense (even if the restart is not perfect).
483      - if no meta file, assume that pickup to read corresponds exactly to
484        a pickup that would currently be written.
485      - read pickup written in the old format (until checkpoint59i) if it
486        recognizes an old meta file (no field-list).
487      - add a meta file in exp. which starts from a pickup: 2 cases:
488        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
489         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
490        b) a meta file describing the content of the associated pickup file
491         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
492    o pkg/mdsio & pkg/rw:
493      - new routine to read a meta file ; new set of routine to read
494        Multiple-fields file (with meta file).
495    o added open boundary conditions capability for seaice
496        HSNOW, HSALT, UICE, and VICE
497    
498    checkpoint59i
499    o adjoint:
500      * fix multiDimAdvection adjoint
501        (partial recomputation problem by TAF for fVerT(:,:,kDown)
502        and comlev1 size definition (maxpass vs. max. number of tracers)
503      * verification/global_ocean.90x45x15 adjoint now tests
504        NLFS and multiDimAdvection using DST3 (=30)
505      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
506    o pkg/kpp: add "_d 0" to real constant (if missing);
507      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
508      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
509    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
510      for internal parameters related to restart process (formerly from PARAMS.h)
511      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
512    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
513      as argument. (only atm2d & obcs write_pickup have not yet been updated)
514    o pkg/monitor:
515      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
516      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
517      - account for deep Atmosphere factor and density factor (anelastic)
518    o added open boundary conditions capability for seaice HEFF and AREA
519    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
520      thermodynamics
521      - requires a little reorganization, which affects the testreport results
522        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
523        so that now the conservative form is tested
524      - add a few comments
525    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
526    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
527    o add new diagnostics to seaice: advective, diffusive fluxes (only for
528      multidim-advection, for scheme 2 they are not filled) and transports,
529      thermodynamic growth rates
530    o change units of EmPmR (inside the code, + within coupling interface)
531      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
532      Affects results @ truncation level (cg2d match) and update output of
533       experiments: lab_sea(6), global_ocean.90x40x15(10),
534      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
535      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
536      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
537      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
538    
539    checkpoint59h
540    o pkg/exf:
541      - improve vectorization by moving if-statement out of loops in
542        exf_mapfields, exf_radiation
543      - exf_bulkformulae.F: introduce 2D fields and vectorize code
544    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
545    o testreport:
546      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
547        monitor & update offline_exf_seaice exp. output.
548      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
549    o pkg/seaice:
550      - bug fix in the evp solver: boundary conditions were affected be
551        masking of zMax/zMin (changes results)
552      - minor bug fix in boundary conditions in seaice_calc_strainrates
553        (changes results for no_slip)
554      - seaice_lsr.F: make interpolation of eta dependent on boundaries
555      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
556      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
557        stress formulation and no-slip boundary conditions
558    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
559      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
560    o pkg/seaice: a first HSALT time stepping equation has been checked in
561    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
562      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
563      without requiring DO-IF statements
564    o pkg/thsice:
565      use continuous power-law function for partition of energy between lateral
566      melting/freezing and thinning/thickening ; old code using step function
567      still available with #undef THSICE_FRACEN_POWERLAW
568      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
569    o testreport: change AD testing : check against results/output_adm.txt
570      using same scripts as for forward test.
571    
572    checkpoint59g
573    o adjoint testing: in preparation for changing testreport:
574      - output format: cost and grad written on separated lines
575      - ad output results in directory "results" (instead of "results_ad")
576    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
577    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
578    o pkg/ecco: allow user defined cost function contributions
579    o testreport:
580      Allow to choose (per experiment) the list of tested output variables
581       and the main variable (used to issue a pass/FAIL ) ;
582      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
583      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
584      Also modify printing of summary:
585       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
586       b) echo the list of tested variables in the individual summary.txt of
587          each experiment.
588    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
589      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
590      (but still depend on the tile decompostion of the domain).
591    o pkg/seaice: change a discretization detail to make the B-grid code
592      "more symmetric". This change is likely to remove all "ridges/leads" that
593      where quasi-aligned with the grid in B-grid solutions. It may also be
594      the solution to the stress coupling issues with the B-grid.
595    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
596      remove .cvsignore from input dir. (since testreport no longer run here).
597    o pkg/thsice:
598     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
599     - fix reshaping of sea-ice just after advection:
600       melt all the ice only if ice-volume is too small.
601     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
602       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
603     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
604    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
605      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
606    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
607      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
608      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
609      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
610      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
611      -> update output.txt
612    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
613     this affects truncation error: -> update output.txt of exp:
614      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
615      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
616    
617    checkpoint59f
618    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
619    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
620      a bounded range (in forward mode)
621    o pkg/ecco, ctrl, autodiff and mom_common:
622     internal parameter controls, completements of implementations
623    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
624    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
625      (not seem any difference in testing results).
626    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
627       at face corners.
628    o pkg/generic_advdiff:
629     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
630      loop range indices for computing vertical advection tendency
631      and do the calculation in the interior only (no overlap) ;
632      for now, only implemented for SOM advection (to save CPU time).
633     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
634    o exch2 adjoint
635      First set of changes:
636      - add exch2 hand-written adjoint templates
637      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
638        This will require cleanup in pkg/autodiff/*.F
639        (changed routines currently kept separate in verif. code/)
640      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
641        that used to hide exch2 or cubed-sphere specific code
642        (commented via 'cph-exch2')
643    o pkg/seaice
644      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
645    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
646       output of global_ocean.cs32x15.thsice .
647    
648    checkpoint59e
649    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
650      for B-grid vector (not yet tested) and C-grid vector (<- only used
651      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
652    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
653      (#ifdef ALLOW_SALT_PLUME)
654    o gather_2d/scatter_2d: removed halo regions
655    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
656      scheme and the corresponding test case (under front_relax dir). For now,
657      only available with Skew-flux form and not yet tested in realistic set-up.
658      adjoint: store directives updated, but gradient checks deteriorated,
659      so maybe GM/Redi adjoint is now broken.
660    o seaice adjoint
661      * add AREA, HEFF, HSNOW as control variable
662        (should not change lab_sea results)
663      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
664    o pkg/seaice:
665      * added computation of saltFlux in seaice_growth;
666        For time being, sea ice salinity is assumed constant
667        contribution of snow flooding to freshening of sea ice is neglected.
668        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
669        defaults to 0.0 in order to maintain backward compatibility.
670        Typical values for SEAICE_salinity are 4 to 10 g/kg.
671      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
672      * added SEAICE_availHeatFrac, which specifies fraction of surface level
673        heat content used to melt or grow ice
674      * commented out cap of HICE: it helps keep ice thinner
675      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
676      * applied OBCS T/S mask to HEFFM sea ice mask
677    
678    checkpoint59d
679    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
680     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
681     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
682    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
683     and change default value of parameter "GM_Small_Number";
684     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
685       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
686       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
687    o pkg/ecco: cost function when applying pkg/smooth to controls
688    o pkg/ctrl: add forcingPrecond run time parameter
689    o pkg/seaice:
690     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
691     - fix bug in metric terms of u-equation in LSR solver (implicit part),
692       changes verification/lab_sea
693     - rearrange implicit part of u-equation in LSR solver to make it easier to
694       read, understand, and debug. This causes changes at the truncation level.
695     - fix (serious) bug in the boundary conditions (sign error in the implicit
696       part) of the LSR solver. Changes all LSR results.
697     - fixed problem with HSNOW initialization to avoid thick snow when AREA
698       is initilized with small values - does not change lab_sea results.
699     - added HsnowFile initialization capability
700    o pkg/smooth: addition to model/src and pkg/ctrl so allow
701     initialization of pkg/smooth and application to control vector
702    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
703    o dependencies: pkg/profiles requires pkg/cal
704    o pkg/profiles:
705     - added option ALLOW_PROFILES_GENERICGRID
706         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
707         that interpolation information (grid points and coefficients) is provided
708         within the netcdf input files.
709         -> sample matlab scripts can be found in MITgcm_contrib/gael
710         that allow you to prepare netcdf input files.
711     - also modified: cleaner include statements, cleaner error print statements,
712       cleaner stops when error, and more tests of the netcdf input files consistency.
713    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
714    o pkg/seaice:
715     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
716       requires a new routine: seaice_diagnostics_fill.F
717     - make sure that seaice does not move if not forced (pressure replacement
718       method, Hibler and Ip, 1995), changes results
719     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
720     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
721       It is turned off by default (=-1.), because it changes the results.
722     - make it possible to read AREA from a file, too.
723    
724    checkpoint59c
725    o add S/R and diagnostics for oceanic mixed-layer depth
726    o move GMRedi call after all vertical mixing schemes (including KPP)
727    o pkg/thsice:
728     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
729      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
730    o pkg/obcs:
731     - bug fix for balance code
732    o pkg/seaice:
733      - allow values of SEAICE_elasticParm > 1
734      - add new parameter SEAICE_evpTauRelax as an alternative
735        to SEAICE_elasticParm
736      - make lsr boundary conditions free slip (by default), changes result
737      - add code for no slip boundary conditions for lsr
738      - set minimum of zeta to zero (and not 4e8) (changes results)
739      - add a cap on AREA after advecting AREA if seaice_growth is not called
740    o change calculation of Visbeck K:
741      - no longer depend on tapering scheme; instead, compute slope (limited
742        by GM_maxSlope). this is equivalent to what was comuted before with
743        clipping or linear tappering.
744      - fix vertical averaging (wrong by 1/2 level)
745      - leave the old version (but will not be maintained) within
746        #ifdef OLD_VISBECK_CALC / #endif
747      - update output of exp. ideal_2D_oce
748    o change error catch in calc_r_star to improve vectorization
749    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
750      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
751    o adjoint:
752      Re-organized adjoint checkpointing according to Matt Mazloff
753      (but with modifs/completions/cleanups)
754      Storing is now bundled into large arrays to optimized I/O
755      (and second step in cleanup of the_main_loop)
756    
757    checkpoint59b
758    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
759      - export/import (between ocean & coupler) fields needed for ocean DIC.
760    o pkg/seaice:
761      - get rid of three more exchanges seaice_calc_viscosities (required
762        different loop boundaries in seaice_lsr and seaice_ocean_stress)
763      - bug fix in seaice_ocean_stress (update of lab_sea required)
764      - reduce loop boundaries to necessary minimum also in seaice_evp
765      - go back to the old way of computing deltaC/Z as the adjoint likes that
766        better
767    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
768      passive tracer to an Age Tracer) + update output.txt
769    o pkg/exf:
770      - implement A-grid / C-grid selection for wind-stress input files.
771      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
772      for now, in exf_bulk_largeyeager04.F only :
773      - change implementation for case where windspeed + 2. components wind-stress
774        are read-in. AND use rhoConstFresh to convert evap.
775    o pkg/seaice:
776      - use correct EXCH_UV for wind-forcing (on A-grid).
777      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
778        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
779    o pkg/exf:
780      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
781      EXF_INTERPOLATION:
782      - merge global_with_exf/code version of exf_interp_read.F
783        to the main code ;
784      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
785        reading the file ; Important: This options needs to be defined to recover
786        previous code.
787        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
788      - no longer loose real*8 precision along the way when using exf_iprec=64.
789    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
790      - change discretisation of evp-solver in order to avoid another exchange
791        (changes lab_sea) and clean up a little
792      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
793        help the adjoint (this also changes the results slightly)
794      - add a few "_d 0" where they had been missing in seaice_evp.F
795      - cleaning up: remove unused seaice_calc_rhs.F
796    o pkg/exf: some cleaning-up:
797      - change various "constants" into runtime parameters
798      - cleaned-up Large&Yeager04 routine which should eventually
799        replace exf_bulkformulae.F (changed names of S/R and CPP)
800        and merged various ALLOW_ATM_WIND options
801     only used with thsice pkg (in thsice_get_exf.F):
802      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
803        which are used when useStabilityFct_overIce=TRUE (= the default)
804      - change default values of ice & snow emissivity and scale downward LW
805        by ice & snow emissivity.
806    o pkg/thsice:
807     fix few little problems, in thsice_calc_thickn.F:
808      - growth vertically (and not laterally) if iceFrac == iceMaskMax
809      - melt only laterally if hIce < hThinIce (as the comments say)
810      and in thsice_extend.F:
811      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
812      - start to form ice as soon as the minimum ice-volume is reachable.
813     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
814      and cpl_aim+ocn
815    o pkg/kpp
816     - move computation of surface related input fields to KPP into a new
817       subroutine kpp_forcing_surf.F
818     - remove wrong (within bi,bj loops) EXCH calls.
819     - little cleaning (add argument myThid in last position, cvs header ...)
820     - for now, fix conservation problem by exchanging KPPviscAz (may not
821       be the best fix)
822    o pkg/seaice
823     - check for inconsistent evp parameter/cpp-flag combination
824     - remove leftover errIO flat for obsolete name list error handling
825    o OpenAD
826     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
827    
828    checkpoint59a
829    o pkg/seaice: some parameter clarifications and a little bit of clean up
830    o pkg/thsice: rename run-time parameters:
831       himin       -> hIceMin
832       himin0      -> hThinIce
833       hihig       -> hThickIce
834       i0          -> i0swFrac
835       transCoef   -> bMeltCoef
836       frac_energy -> fracMelting
837      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
838       with default values (for now) that do not change the results.
839      remove old version of thsice vars advection in pkg/seaice.
840    o in FFIELDS.h:
841      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
842      - make pLoad & sIceLoad always available (but still only used if
843         ATMOSPHERIC_LOADING is #define).
844    o pkg/kpp: replaced _KPP_RL with _RL
845    o bug fixes for vertical diffusivity computations when both KPP and
846        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
847        are no longer updating the vertical diffusivity array
848        (passed as argument) but are (re-) setting those arrays.
849    o pkg/seaice: fix bug in evp solver, while doing that
850      - change (improve?) discretization of stress computations for both
851        cgrid-lsr and evp solver
852      - add a new routine to compute strain rates
853      - the above changes lab_sea results
854      - add no slip conditions for evp solver (off by default), lsr-version
855        may follow
856      - fix exchange for shear at Z-points (does not change lab_sea)
857      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
858        (to force the user to pick a time step since there is not "safe" way
859        of choosing it)
860      - add principal stress diagnostics
861      - rearrange fields for evp a little to avoid having to call a: too many
862        exchanges and b: exchanges for stress trensor components which we do
863        not have.
864      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
865        of evp, complete rewrite for lsr case (latter is does not yet work
866        in all cases)
867    o pkg/kpp: add code to have mixing in shelf ice caverns
868      - add myThid to all kpp routines (long overdue)
869    
870    checkpoint59
871    o pkg/exf:
872      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
873        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
874      - move exf header files from lower_case.h to UPPER_CASE.h ;
875        add missing cvs Header & Name
876      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
877      - add namelist param. selectStressGridPosition, exf_monFreq
878      - retire many _CLIM routines, and remove data.exf_clim
879        + params moved to data.exf
880        + climsst, climsss now handled by exf_set_gen, i.e.
881          climss?period=0 refers to constant field,
882          climss?period=-12 to monthly forcing
883      - split up namelists in data.exf
884    o pkg/seaice:
885      - remove seaice_exch and seaice_exch_uv
886      - remove superfluous exchange of theta
887      - add myThid to seaice_budget_ocean/ice
888      - add new interface for atmospheric wind forcing (C-grid only)
889        + new routine
890        + two new field (taux, tauy for stress over ice)
891        + removed one global field (DAIRN) for C-grid case only
892    o pkg/thsise
893      - 2nd set of modifs for thsice adjoint in conjunction with exf
894    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
895    
896    checkpoint58y_post
897    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
898      vertical diffusivity, similar to that in MOM4; turned on using
899      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
900      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
901    o Added capability for 3D specification of background vertical diffusion
902      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
903      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
904      "data" file that contains the 3D vertical diffusivity coefficients.
905    o ice dynamics (pkg/seaice) with thsice thermodynamics:
906      - add code within pkg thsice to advect & diffuse sea-ice fields
907      similar to (and will replace) what has been added in  seaice_advdiff.F,
908      but: - conserving Mass, Heat & Salt.
909           - better when using non-linear advection scheme (not yet fully tested)
910           - can also be used in atmospheric set-up (for now, only the diffusion).
911    
912    checkpoint58x_post
913    o IO option for global-file compact format:
914      - add options when generating topology (utils/exch2/matlab-topology-generator)
915      - add I/O capability (pkg/mdsio).
916      - adapt utils/matlab/rdmds.m to read this format.
917      for now long-line format not yet supported by pkg/mdsio (& exch2).
918    o shelfice: add a few diagnostics
919    
920    checkpoint58w_post
921    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
922      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
923      (and replace horiVertRatio in NH code).
924      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
925                         and tutorial_plume_on_slope (sensitive to truncation)
926    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
927      directly to drive seaice model (C-grid only)
928    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
929     - reintroduce computation of wind from stress,
930     - compute tau (in exf_bulkformulae.F) from windstress averaged to
931       mass points to avoid tau = 0
932     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
933    o rdmnc.m: make it work with "global" files created with gluemnc
934    o rdmnc.m : some improvements in dealing with singleton dimension
935      (tested on all testreport mnc output files).
936    o genmake2: disable pkg/profiles if netcdf test fails.
937    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
938    o move call to cal_readparms up to make calendar parameters/variable available
939      to all packages
940    
941    checkpoint58v_post
942    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
943      useDynP_inEos_Zc tested.
944    o pkg/exf: changes to properly interpolate/mask/scale initial fields
945    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
946      and portions thereof.  See read_cs.txt for description and examples.
947    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
948      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
949      following the great-circle arc between those 2 points.
950    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
951      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
952    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
953     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
954     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
955     - still needs work (not working with some options ; efficiency to improve)
956       and serious testing.
957     - use this scheme for temperature & salinity in 2 advection test exp.:
958       advect_xy & advect_xz, respectively.
959    
960    checkpoint58u_post
961    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
962    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
963    o testreport: add option "-skipdir" to skip some test.
964    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
965      momentum calculation.
966    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
967    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
968      remove checkpoint.F and the_correction_step.F (no longer used);
969      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
970    o add option (linFSConserveTr) to correct for tracer source/sink due to
971      Linear Free surface
972    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
973    o pkg/thsice: fix reading mnc-pickups
974    
975    checkpoint58t_post
976    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
977    o pkg/mdsio:
978     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
979       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
980       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
981     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
982     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
983       either MDS_READ_FIELD or MDS_WRITE_FIELD )
984     - new S/R (to replace MDSWRITEMETA), which allows to write more
985       informations (variable names, time ...) to meta files.
986     - modify rdmds.m to give back the meta file content.
987    o pkg/diagnostics: change vertical interpolation to be safer, and more
988       flexible (define p-levels to interpolate to in data.diagnostics);
989      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
990       diagnostic pointer.
991    o pkg/seaice: more cleaning up of seaice_growth, added many comments
992    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
993    o fix multi-category seaice:
994     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
995       SEAICE_MULTICATEGORY
996     - fix short wave heat flux
997    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
998       and allow to use EVP solver. Change forward lab_sea: test both EVP
999       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1000    o Initial check-in of lab_sea adjoint
1001      (very similar to natl_box_adjoint/code_seaice)
1002      * used C-grid and EVP solver
1003      * used KPP, GM/Redi
1004      * uses inAdExact=.TRUE.
1005      * gradient checks fail for both ADM and TLM
1006        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1007        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1008        issue is related to forward mismatch between g77 an ifort
1009    o pkg/seaice: overhaul of thermodynamics
1010     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1011     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1012     - move a few global fields out of SEAICE.h into seaice_growth.F and
1013       make them 2D (FICE/QNETO/ ...)
1014     - remove FO (it is the same as QNETO)
1015     - introduce a few local fields to avoid modifying external fields such
1016       as atemp, etc.
1017    
1018    checkpoint58s_post
1019    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1020      changed exf_set_gen.F so that
1021        genperiod=0 means input file is one time-constant field and
1022        genperiod=-12 means input file contains 12 monthly means
1023    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1024      this affects truncation error ; generate new output file for exp. which
1025      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1026        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1027        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1028        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1029        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1030        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1031    o start implementation of deep-atmosphere and anelastic formulation
1032    o verification: remove 2nd copy of input files and use script "prepare_run"
1033      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1034    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1035    o profiles: fix for multithreaded case
1036    
1037    o diagnostics: rename few diags:
1038      s/'PRESSURE'/'RCENTER '/g
1039      s/'TICE    '/'oceFreez'/g
1040      s/'TAUX    '/'oceTAUX '/g
1041      s/'TAUY    '/'oceTAUY '/g
1042      s/'SWFLUX  '/'oceQsw  '/g
1043      s/DIFx/DFxE/g
1044      s/DIFy/DFyE/g
1045      and add few ocean-forcing diagnostics:
1046      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1047    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1048      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1049      as actual snow thickness.  It now refers everywhere to effective snow
1050      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1051    
1052    checkpoint58r_post
1053    o modifications to pkg/seaice/growth.F, which change results of
1054      lab_sea experiment: fixes pertain to melting snow over open water, to
1055      masking EVAP under sea ice, and to using the correct AREA variable for
1056      computations of EVAP, PRECIP, HSNOW, and GHEFF
1057    o add ability to read bathy, salt, and theta using MNC (off by def)
1058    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1059      both are turned off by default and do no change any results
1060    o seaice advection with pkg/thsice: a step toward the use of non-linear
1061      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1062    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1063      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1064      in natl_box (affects results @ truncation level: update output.txt)
1065    o multi-threading and IO:
1066      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1067      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1068        (needed to work with SingleCpuIO): tested in all verif. exp.
1069    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1070      affects the results (but none of the verification test uses this scheme).
1071    o Adding some pkg/diagnostics capability to pkg/seaice
1072      (will certainly be subject to changes)
1073    o ctrl: adding new control variables:
1074      lwflux, lwdown, evap, snowprecip, apressure, runoff
1075    
1076    checkpoint58q_post
1077    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1078      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1079      high_res_cube configuration by 4% on Columbia.
1080    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1081      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1082      dynamical allocation (seems to work in multi-threaded).
1083    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1084      single CPU io) so that TAF does not have to see EESUPPORT.h
1085    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1086    
1087    checkpoint58p_post
1088    o obcs: stop if obcs is used with useCDscheme = .true.
1089    o shelfice:
1090     - fix a sign error so that no slip at shelfice interface works
1091     - remove stop for combination non-hydrostatic code and shelfice. That does
1092       not mean, that the results are correct, but at least they are numerically
1093       stable
1094    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1095    o added adjoint exch routined for all exch*3d* routines
1096      and updated flow directives
1097    
1098    checkpoint58o_post
1099    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1100      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1101    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1102      and clean-up reading/writing of pickup files.
1103    o fix local version of read/write pickup (NH part) in rotating_tank/code
1104    o simplify EXCH interface:
1105     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1106     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1107    o added the regrid package
1108    o shelfice:
1109     - add a simple boundary layer scheme to reduce noise
1110     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1111    
1112    checkpoint58n_post
1113    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1114       local variable (not in common block).
1115    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1116      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1117      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1118        to work with SingleCpuIO.
1119    o add "_d 0" to real constant of pkg/cfc subroutines ;
1120       update exp. cfc_exemple & tutorial_cfc_offline output files.
1121    o multi-threading and IO:
1122      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1123        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1124      - barrier before and after reading.
1125      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1126      - avoid using MDS_WRITELOCAL for LAND pkg output.
1127      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1128        common-block variables ; Allows multi-threading with master-thread IO.
1129    o change default MAX_NO_THREADS from 32 to 4 ;
1130      and stop cleanly when MAX_NO_THREADS is too small.
1131    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1132    
1133    checkpoint58m_post
1134    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1135       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1136    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1137       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1138       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1139    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1140        add MITgcm_tutorials (= code + all the tutorials)
1141    o ecco, option to compute cost for total ssh (mean+anom)
1142    o consistent with addition of ptracer and ssh in pkg/profiles
1143    o profiles: adding ptracer and ssh
1144    o testreport: change multi-test output-file name
1145      (from output.txt.{name} to output.{name}.txt)
1146    o profiles: now ok for mutli-tiles case
1147    o seaice: add 4 parameters for different advection schemes for area,
1148      (effective) seaice thickness, enthalphy, and snow height. Their default
1149      is the standard parameter SEAICEadvScheme
1150    o calc_gw:
1151     - add cosFacU in zonal viscous flux (harmonic.visc.).
1152     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1153       of tutorial_plume_on_slope.
1154    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1155    o calc_gw: true flux-form, account for horizontal grid spacing.
1156      update rotating_tank results, but not plume_on_slope (affected at
1157      truncation level, 11 digits).
1158    
1159    checkpoint58l_post
1160    o calc_gw:
1161     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1162     - remove side-drag for now (need to fix it); update plume_on_slope results.
1163     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1164    o commit code to make SST/SSS weights spatially variable
1165      (based on either variable in-situ or variable initial T/S weights)
1166    o pkg/ecco:
1167      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1168        now based on horizontally varying weights wthetaLev, wsaltLev
1169      * cost_averagesflags now returns year indices in addition to day, month
1170      * sflux balance is performed on annual basis
1171        (sflxumm, sfluxmm2, bal_sfluxmm)
1172      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1173        including separate counting and multipliers
1174    o pkg/rbcs
1175      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1176    
1177    checkpoint58k_post
1178    o testreport:
1179     - always build in dir. "build" (if not there, mkdir build instead of building
1180       & running in input)
1181     - run in dir run (if it exists), in build otherwise.
1182     - call prepare_run (if input/prepare_run exists)
1183     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1184    o pkg/exf modifications to interpolation and rotation routines for more
1185       reasonable treatment of North Pole singularity: for tracers North Pole
1186       value is set to northernmost zonal-mean value, for zonal velocity it is
1187       set to zero, and for meridional velocity it is set to northernmost value.
1188    o pkg/exf/exf_check_range.F
1189     - add tile index to diagnostics and move stop statement to the very
1190       end of the routine.
1191    o pkg/diagnostics: (diagnostics_main_init.F)
1192      define title of isomorphic variables according to the current config.
1193    o pkg/thsice with pkg/seaice dynamics:
1194    - fix domain of computation (interior only, required for exf) and do exchanges
1195    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1196    o towards a standard way of dealing with multi-threading in MONITOR
1197      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1198    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1199       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1200    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1201    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1202    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1203       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1204    o tracer advection:
1205     - clean-up and simplify calc_common_factors.F
1206     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1207       advection subroutine (but still not used within DST advection S/R)
1208    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1209    
1210    checkpoint58j_post
1211    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1212      from file (collects calls previously in FORWARD_STEP)
1213    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1214    o adjoint store dir. adjusted accordingly
1215    o genmake2
1216      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1217    
1218    checkpoint58i_post
1219    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1220      on wind stress (SEAICEstressFactor defaults to 1.)
1221    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1222      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1223    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1224      on CS-grid: no longer loosing mass.
1225    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1226    o pkg/ggl90: fix sloppy output and fix a bug
1227    o pkg/seaice: added SEAICEuseEVPpickup parameter
1228      - Set to false in order to start EVP solver with
1229        non-EVP pickup files when using SEAICEuseEVP
1230      - fix sign error in diffusion in seaice_calc_rhs
1231    
1232    checkpoint58h_post
1233    * Modifications for bottom topography control
1234      o replace hFacC by _hFacC at various places
1235      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1236      o add non-self-adjoint cg2d_nsa
1237      o update autodiff support routines
1238      o re-initialise hfac after ctrl_depth_ini
1239      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1240    * Adding verification for 5x5 box (4-layer) bottom topography control
1241    
1242    checkpoint58g_post
1243    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1244       used for mean seasonal cycle, mean diurnal cycle); add an example
1245       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1246    o pkg/ggl90:
1247      - add parameter (minimum surface kinetic energy)
1248      - fix bug (avoiding division by zero)
1249    o couple pkg/thsice to pkg/seaice:
1250      - modify advection in seaice to accomodate new scalar fields to be advected
1251      - only muliDimAdection scheme work with seaice/thsice
1252      - mapping of thsice-variables to seaice-variables, back and forth
1253      - does not break the verification experiments, but does not give the
1254        desired results either
1255    o pkg/seaice
1256      - make (default) second order advection a bit less confusing?
1257    
1258    checkpoint58f_post
1259    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1260      to pkg/seaice):
1261      - new routines thsice_map_exf and thsice_get_exf provide the interface
1262      - add an additional formal parameter to thsice_solve4temp
1263    o pkg/exf:
1264      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1265      - correct Stefan-Boltzmann constant
1266      - new parameter for longwave surface emittance
1267      - separate some stuff from exf_bulkformulae into new routines  
1268        exf_radiation, exf_wind
1269      - add new parameters and constants: longwave emissivity for ocean, ice
1270        and snow, evaporation parameters over ice
1271      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1272        either wind from stress or stress from wind
1273    o pkg/thSIce:
1274    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1275    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1276       and THSICE_CALC_THICKN
1277    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1278    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1279      to make debugging easier.
1280    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1281    o pkg/bulk_force:
1282      - clean-up comments and parameters ;
1283      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1284    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1285      generate new output for test-experiment: aim.5l_cs.thSI
1286    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1287      testreport accordingly
1288    
1289    checkpoint58e_post
1290    o SEAICE_CGRID adjoint done
1291    o R_STAR adjoint implemented.
1292      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1293      * need to sort out init. of h0facc, etc.
1294    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1295      to be able to use it in pure forward.
1296    
1297    checkpoint58d_post
1298    o upgrade simple test-experiment to tutorial example:
1299     step.1: duplicate the experiment and (step.2) will remove the old copy.
1300      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1301      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1302      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1303      tutorial_global_oce_biogeo    <- copy of dic_example
1304      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1305      tutorial_plume_on_slope       <- copy of plume_on_slope
1306      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1307      tutorial_global_oce_optim     <- empty for now (David ?)
1308      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1309     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1310    o correct a sign problem in cost_scat.F
1311    o obcs and ptracers: fix boundary conditions for advections schemes
1312      with larger stencil
1313    o thsice adjoint: start
1314    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1315      completeness
1316    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1317      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1318    o ptracers adjoint:
1319      * avoid extensive recomputatations
1320      * fix missing re-init. of gptr (missed by TAF)
1321    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1322      me to turn off the excessive output to STDOUT that this package produces
1323    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1324      and add those terms in Vector-Invariant formulation.
1325    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1326      if the control period (xx_hfluxperiod etc) is 0
1327    o in profiles pkg, clean routines and fix details
1328    o in ecco pkg, reading ssh data:
1329      fix problem in case the model does not start at iter0=0
1330    o fix mnc-pickup/restart for ptracers
1331    o new package prifiles:
1332      code to compute profile-based cost by Gael Forget
1333      (modifs in ecco, ctrl, autodiff)
1334    o Benign bug fix in initialization (spotted by M. Mazloff) of
1335      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1336    
1337    checkpoint58c_post
1338    o adjoint: finish NLFS adjoint and provide reference output in
1339      verification/global_ocean.90x40x15/results_ad_nlfs
1340    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1341      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1342      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1343      with SEAICE_CGRID defined.
1344    o move calendarDumps from "data" to "data.cal" and clean-up the code
1345      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1346    o add useEXF & useCAL flags (for now, set in hard-coded way)
1347    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1348      (were missing in NH mode, and wrong in quasihydrostatic mode).
1349      waiting for Chris updated version of calc_gw to add those CALLs.
1350    o fix bug in quasihydrostatic S/R ;
1351      add a test for this option: global_ocean.90x40x15.qshyd
1352    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1353      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1354    o add on/off flag useOffLine for package OFFLINE
1355    o seaice:
1356      - modify advection so that it works also on the C-grid
1357      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1358        problem in multi-tile runs with C-grid
1359      - add flags for clipping ice velocities and/or masking solver forcing
1360      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1361        C-grid solver
1362      - added a few comments to seaice_diffusion.F
1363      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1364        are now exclusive)
1365      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1366        required re-ordering the code a little:
1367       + make DAIRN global variable (defined in SEAICE)
1368       + move computation of the viscosities eta and zeta into a new separate
1369         routine (because I need to recompute them in seaice_ocean_stress.F)
1370    
1371    checkpoint58b_post
1372    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1373      update output.txt of exp. aim.5l_cs.thSI
1374    o various mnc cleanups and improvements:
1375      + shrink lookup tables by factor of ~4
1376      + better error reporting when running out of lookup space
1377      + able to handle longer path/file names (up to 500 chars)
1378    o adjoint:
1379      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1380      - TBD: "hidden" mom_vecinv recomp. in dynamics
1381    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1382     (allow to differentiate between forcing components using new integer flags:
1383      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1384     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1385    o ecco
1386      - enable trend removal from SSH anomaly obs.
1387    o adjoint
1388      - a fix for PmEpR when #undef EXACT_CONSERV
1389      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1390      - try to fix "hidden" recomp. in forward_step for NLFS
1391        (NLFS seems broken sometimes after I checked it in)
1392    o seaice:
1393     - add c-grid version of the dynamic solver:
1394       + three new routines that are the c-grid substitute lsr, dynsolver
1395         and ostres
1396       + put a few fields that were local to dynsolver into global common
1397         blocks, so that I can move the computation of stresses etc into
1398         seaice_lsr (saves coding but may break the adjoint).
1399     - replace more hardwired parameters by runtime parameters
1400     - add ice masks that mask the rhs of the implicit solvers where there
1401       is no ice (commented out in seaice_dynsolver, because i am not sure
1402       if this works properly), eventually this should replace the clipping
1403       of ice velocities in seaice_dynsolver to +/-40cm/s.
1404    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1405      include it only where its needed
1406    o move balancing of fluxes before the call of external_forcing_surf
1407    o seaice:
1408      - correct units of turning angles (now they are really in degrees)
1409      - move computation of GWATX/Y out of main routine into dynsolver
1410      - initialize GWATX/Y in seaice_init
1411    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1412      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1413    o seaice: add runtime flags for turning angles (default to zero)
1414    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1415      and trend from exf forcing and ctrl control adjustments
1416    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1417      (since checkpoint57x_post)
1418    o change the default rotation period to 86164.s = the Earth rotation
1419    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1420      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1421    o seaice advection: add code for choosing between the default (2nd order
1422      central differences) and multiDim advection schemes provided by
1423      pkg/generic_advdiff
1424    o seaice:
1425      - removed all references to SEAICE_GRID.h fields from
1426        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1427        (cubed-sphere configuration will change a little)
1428      - grid computations in seaice_init are obsolete now.
1429      - cleaned up code a little so that is easier to read (hopefully).
1430      - added new (better?) discretizations of default advection and diffusion
1431        (turn on with SEAICEuseFluxForm)
1432      - replace 1 in 3d global fields by kSurface in growth.F
1433      
1434    checkpoint58a_post
1435    o seaice:
1436      - bug fix in advect.F
1437    o shelfice:
1438      - separate shelfice load anomaly from pload (breaks with time
1439        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1440        Its default is 0., but it may be computed more cleverly from (unknown)
1441        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1442        done offline. A good approximation of the pressure load anomaly is
1443        necessary to avoid large initial adjustment processes underneath
1444        deep-reaching shelfice.
1445      - small fix in ISOMIP shelfice_thermodynamics
1446      - add more sophisticated thermodynamics of Hellmer (1989), this is
1447        now the default
1448      - give a few constants more intuitive names
1449    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1450      if bulk formulae are used in long integration (especially EmPmR). Turn
1451      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1452      if balancePrintMean, the imbalance that is substracted is printed to
1453      STDOUT.
1454    o fix bug (typo) in obcs_apply_eta.F
1455    o add a new package shelfice which enables us to model the circulation
1456      underneath shelf-ice with draughts of hundreds of meters.
1457     - works
1458     - to do: + include improved thermodynamics
1459              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1460                instead of new field kTopC
1461              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1462                instead of new field R_shelfIce and new code in ini_depth.F
1463                and ini_mask_etc.F?
1464              + adjust vertical mixing schemes?
1465    o seaice pkg:
1466     - add a cpp-flag to include a simple formula for a salinity dependent
1467       freezing point of sea water at the surface
1468     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1469       meridional stresses are now different (and hopefully correct)
1470    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1471       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1472       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1473    o pkg/diagnostics: add options and parameters for regional-statistics
1474       diagnostics ; define regions by reading a region-mask from a file
1475       (might add other options later)
1476    o pkg/bulk_force:
1477     - add option and parameters to use AIM surface-flux formulae.
1478     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1479       others forcing fields (defined in PARM05, parameter file "data") are loaded
1480       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1481     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1482     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1483     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1484       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1485     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1486    
1487    checkpoint58
1488    o add "--embed-source" option to genmake2 which, when the supporting
1489      tools can be compiled (as determined by genmake2) will turn on the
1490      embed_files package which then embeds the entire MITgcm source code
1491      (*.[fFhc] + Makefile) used for the build within the executable
1492      - requested by CNH but off by default
1493      - adds a paltry <9MB to the mitgcmuv executable in most cases
1494      - only writes the output when useEMBEDSRC in eedata is true
1495    o clean up 3-dim. relaxation codes:
1496      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1497      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1498      * Thanks to Tom Haine for testing!
1499    
1500    checkpoint57z_post
1501    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1502      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1503    o fix the pickup behavior for obcs in combination with ptracers
1504    o fix a bug in ptracers_external_fields_load
1505    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1506      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1507    o transfered surface NH pressure to eta field (if exactConserv).
1508    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1509         and update lab_sea output.txt file.
1510    o completing 3-dim. relaxation code: additional term
1511         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1512      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1513      * At compile time, in "EXF_OPTIONS.h" set
1514          #define  ALLOW_CLIMTEMP_RELAXATION
1515          #define  ALLOW_CLIMSALT_RELAXATION
1516      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1517          tauThetaClimRelax3Dim = 15552000.0,
1518          tauSaltClimRelax3Dim  = 15552000.0,
1519      * 3 cases:
1520          1) Use a constant-in-time 3-dim. field
1521          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1522          3) Real-time relax. to time-evolving prescribed field
1523    o Adding Laplacian-type smoothness constraint on
1524      initial and boundary (forcing) controls (ic, bc)
1525      * enable at compile-time via
1526        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1527      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1528      * Absolute scale somewhat unclear so far
1529      * no area weighting was included since no other cost term does so far
1530    
1531    checkpoint57y_post
1532    First step for a NLFS adjoint
1533    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1534    o new init. routines for calc_r_star, calc_surf_dr
1535    o still need to deal with ini_masks_etc
1536    o testreport seemed happy
1537    checkpoint57y_pre
1538    
1539    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1540    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1541    o add new offset feature to offline pkg (plus minor cleanup)
1542    o cfc fixes for final year of integration
1543    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1544      be in GCHEM_OPTIONS).
1545    
1546    checkpoint57x_post
1547    o fix testreport Pb in multiple test experiment.
1548    o cleanup our namelist syntax in verification:
1549      - make it more F95 standards compliant (some work still needed)
1550      - allows the vast majority of our tests to work with gfortran
1551    o Non-Hydrostatic:
1552     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1553     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1554    o Allow to apply AB on T,S rather than on AB(gT,gS):
1555     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1556     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1557       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1558     - need a "clever" read_pickup to restart from the other AB formulation
1559    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1560    o remove some unused variables (reduces number of compiler warnings)
1561    o adjoint
1562      * Disable useVariableViscosity for adjoint for time being
1563        (there are a number of extensive recomputations)
1564      * Initialize certain variables needed for adjoint
1565    
1566    checkpoint57w_post
1567    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1568                 fix the singleCpuIO RS version of MDSWRITEFIELD
1569       and add a WARNING if using globalFiles=T with multi-processors.
1570    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1571      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1572    o tracer advection scheme:
1573      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1574       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1575       was not very convenient).
1576      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1577       (further tests needed for the implicit DST & Flux-Limiter schemes).
1578    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1579      and sRef for convenience, handy, when you want to initialize
1580      ptracers in a large domain with a constant non-zero value. Also,
1581      untangle ptracers_init.F a little.
1582    
1583    checkpoint57v_post
1584    o change dome exp. to use variable viscosity in side-drag terms.
1585    o remove all the files from the cfc_offline test since they are now
1586      incorporated into tutorial_cfc_offline which has been producing
1587      identical results for a few days of testing
1588    o add new parameter: sideDragFactor to enable half-slip-side BC
1589      and change side-drag S/R to use viscosity from mom_calc_visc
1590      (can switch back by setting sideDragFactor=0.); affects results at
1591      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1592       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1593    o vorticity & strain are now computed without masking, to account for
1594      no-slip-side BC in variable viscosity calculation ; mask is applied
1595      anyway later on, before computing advection/coriolis terms.
1596    o modify exp4 to test new obcs support for reading from external files
1597      and for passive tracers
1598    o fix behavior of ptracers_monitor when monitor output is written to a
1599      netcdf-file; still not independent of monitor.F (writes in the same
1600      file).
1601    o change default value of tRef (put a uniform, meaningful value for ocean
1602      & atmos) and initialize sRef (was missing, as Martin mentioned).
1603    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1604      to be proportional to enstrophy dissipation length.  Thus,
1605       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1606      This is now consistent with Smagorinsky and with the manual.
1607    
1608    checkpoint57u_post
1609    o OBCS and PTRACERS: add open boundary support for passive tracers
1610      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1611        OB-values from file; this is not different from the way theta and salinity
1612        are treated
1613      - however, Orlanski-radiation conditions are not supported, and the model
1614        will stop if you use pTracers and Orlanski at the same time.
1615      - beefed up the rountine obcs_external_fields_load: now only those open
1616        boundary values are overwritten with values from files for which there
1617        are really files, otherwise the OB-fields remain untouched. This makes
1618        it possible to use different OBs at different ends of the domain (as
1619        with EXF)
1620    o reduce number of exch calls in shap_filt (s2).
1621    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1622      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1623    
1624    checkpoint57t_post
1625    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1626    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1627      same truncation, independent of the face number: affects affects several
1628      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1629    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1630      note that biharmonic viscosity + no-slip was not tested in any experiment.
1631    o fix bug in non-linear free-surf side-drag ; generate new output for
1632      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1633    o make mnc honor the writeBinaryPrec flag for most kinds of output
1634    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1635    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1636      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1637    o add brackets in multi-terms sum to get same truncation, independent of
1638      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1639      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1640    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1641      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1642      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1643      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1644      Suggested values of viscosity parameters found in mom_calc_visc.
1645      Many new viscosity diagnostics available.
1646    
1647    checkpoint57s_post
1648    o Add clearing-house for viscosity calculations, mom_calc_visc and
1649      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1650      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1651      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1652      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1653      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1654      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1655      ViscAhStrain and viscAhTension are now retired.
1656    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1657    o In response to JMC's bug report, genmake2 now ignores any soft-links
1658      that it finds in the *current* directory when searching for files.
1659      Soft-links found in any other source directories will still work as
1660      they did before.
1661    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1662      a C routine to unlimit the stack size
1663    o mnc-ify pkg/aim snapshot vars
1664    o mnc-ify pkg/land as requested by Daniel
1665    o various changes to mnc including:
1666      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1667      - output can now be grouped so that all files within a group
1668          change the ITER portion of their names in lock-step together
1669      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1670          and works with both EXCH1 and EXCH2 (but needs more testing)
1671      - writing works for all verification test cases w/ g77 on Linux
1672    
1673    checkpoint57r_post
1674    o make MNC variable initialization happen earlier
1675    o add diagnostics for (almost) each term of the momentum Eq.
1676    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1677    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1678    o remove MINIMAL_TAVE_OUTPUT option ;
1679      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1680    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1681      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1682    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1683    o add time-dependent SST, SSS control
1684    o cost terms in ecco/ modularized (new cost_generic.F)
1685    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1686    o new infrastructure for seaice model vs. obs misfits in seaice/
1687      * driver from the_main_loop.F is seaice_cost_driver.F
1688      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1689      * gradient check in Exp. 6a of natl_box_adjoint/
1690    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1691      (see README file)
1692    
1693    checkpoint57q_post
1694    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1695    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1696      - bug was reported by Jean-Michel and Ian Fenty
1697    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1698      update exp. cpl_aim+ocn output.
1699    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1700      Needed for high-res. runs with large global files
1701      to be able to limit tapelev size
1702    o Changed some tests for adjoint:
1703      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1704      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1705      * global_ocean.90x40x15/ back to default 3-level checkpointing
1706    o Modifications to enable scripted COMMON to MODULE conversion
1707      * verification/OpenAD/code/ has necessary scripts and description;
1708      * converts, compiles and runs successfully;
1709    
1710    checkpoint57p_post
1711    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1712    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1713      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1714    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1715    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1716      (was already the case for dissipation with mom_vecinv,
1717       and also the case for grad.PhiHyd when staggered-timeStep)
1718      This will allow to put dissipation out-off the AB time-stepping.
1719     Unfortunately, affects truncation error. Update output of exp. that "fails"
1720      (cg2d matching number) and leave the others for later: front_relax(10),
1721      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1722      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1723    
1724    checkpoint57o_post
1725    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1726      (2) its ready to be documented during the 20050801 DocFest
1727    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1728      for ideal_2D_oce and lab_sea on linux_ia32_g77
1729    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1730      in global1x1_tot/code_seaice_adj to access indices 32, 33
1731      (worth another tag)
1732    
1733    checkpoint57n_post
1734    o adding precip control xx_precip 32
1735    o adding swflux control xx_swflux 33
1736    o Replacing 10 forcing penalty cost routines by 1 generic.
1737    o Implementing partitioning in time-mean and variable adjustment
1738      for atmos. state.
1739    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1740    o in natl_box_adjoint:
1741      * updated exp 1 to 10
1742        (but does not have time-mean vs. variable split results yet)
1743    o updated global1x1/*_seaice_adj/
1744      to incorporate latest changes
1745    o enable useSingleCpuIO for mdsio vector routines
1746      (applies in particular to tapelev I/O)
1747    o removed inefficient K-loop in all active_file*control*.F
1748    
1749    checkpoint57m_post
1750    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1751      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1752    o pkg/exch2: filling of face-corner halo regions is optional
1753      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1754    
1755    checkpoint57l_post
1756     tag before updating tutorials (pre-release-2)
1757    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1758       for output and interpolation of input fields onto model grid)
1759    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1760       Affects results of exp. rotating_tank ; update output.txt.
1761    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1762          and taking the square quantity and/or using a fraction-weight field.
1763    o fix aim_diagnostics_init.F mate numbers.
1764    o add mnc output capability to diagnostics/diagstat and update
1765      our cvsignore files for the ACSII output generated
1766    
1767    checkpoint57k_post
1768    o lab_sea now uses diagnostics package and provides a suite of
1769      new EXF diagnostics output.
1770    
1771    checkpoint57j_post
1772    o exf
1773      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1774        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1775        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1776      * extended diagnostics output
1777        - now includes all EXF variables
1778        - hs, hl moved to common block
1779        - separate S/R for diagnostics, called after ctrl vector is added
1780        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1781        - EXFqnet contains true Qnet (i.e. includes qsw)
1782      * updated verif. lab_sea, global_with_exf
1783      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1784        to ensure that diagnostics sees a true EXFqnet
1785    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1786    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1787      several times with different frequencies.
1788    o mnc-ify the thsice package as requested by Daniel Enderton
1789      - the monitor--MNC output needs work
1790      - many attributes need to be added (most are currently blank)
1791    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1792      - many attributes need to be added (most are currently blank)
1793    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1794    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1795    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1796      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1797         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1798    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1799     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1800    
1801    checkpoint57i_post
1802    o Diagnostics package was changed: diagnostic allocation is now deactivated
1803      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1804    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1805      add 1rst Order upwind vertical Shear.
1806    o add a quick fix for A/B checkpointing in OFFLINE mode
1807    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1808      end-run around the C/Fortran linking horror in eesup/src/timers.F
1809    o added pkg/runclock: allows user to terminate run based on wall clock
1810    o added non-hydrostatic scaling parameter: nh_am2
1811    o pkg/my82: futile attempt to make results compiler-independent by adding
1812      some "_d 0", etc. no effect.
1813    o for mnc output, fill the 'T' coordinate var with myTime and create a
1814      separate 'iter' variable for iteration count
1815    o pkg/diagnostics:
1816      add new capability: output of Global/Regional & per-level statistics ;
1817      tested against monitor output (including land & thSIce) on various exp.
1818    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1819    
1820    checkpoint57h_done
1821      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1822      data.diagnostics, data.gchem, data.ptracers) is done.
1823    
1824    o pkg/diagnostics: prepare for Global/Regional statistics.
1825      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1826    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1827      and rename it: DIFFERENT_MULTIPLE
1828    
1829    checkpoint57h_post
1830    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1831    o pkg/diagnostics: change output frequency, now in seconds (instead
1832      of Nb of iterations). This requires to change data.diagnostics.
1833    checkpoint57h_pre
1834    
1835    o in mnc, let the user create the output dir if both mnc_outdir_date
1836      and mnc_outdir_num are false
1837    o add fflags() to pkg/diagnostics which allows one to specify, on a
1838      per-file basis, the file precision [default behavior is unchanged]
1839    o added diagnostics to pkg/kpp, including computation of mixed layer
1840      depth based on a temperature/density criterion
1841    o updated verification/natl_box to test the new pkg/kpp diagnostics
1842    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1843    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1844    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1845      not mnc -- this mistake was found by JMC and is now corrected
1846    
1847    checkpoint57g_post
1848    o add Adams-Bashforth 3rd Order time stepping:
1849      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1850      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1851    checkpoint57g_pre
1852    
1853    o make lambda[Theta,Salt]ClimRelax spatially varying
1854      (default remains spatially uniform constant based on tau)
1855    o added new control variables
1856      * init. uVel, vVel, etanN
1857      * lambda[Theta,Salt]ClimRelax
1858    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1859      (suggested by G. Forget)
1860    
1861    checkpoint57f_post
1862    o add parameter "baseTime" = model base time = time at iteration zero
1863      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1864      account for baseTime shift
1865    o move Coriolis arrays from PARAMS.h to GRID.h
1866    checkpoint57f_pre
1867    
1868    o mnc-ifying the seaice package
1869    o introduced an alternative length scale calculation for use in the limiting
1870      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1871    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1872    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1873      as well as grad(vort3).  Made it compatible with both approximate form
1874      for the cubed sphere and full form of these gradients.  Added flag
1875      useFullLeith to select between approximate and full form.  
1876    o add "d0" in getcon.F to reduce differences between compilers/platforms
1877      update output.txt of exp. fizhi-gridalt-hs
1878    o change port_rand funtion to allow to set the seed.
1879    o fix obscure MNC bug involving conversion between reals and integers
1880      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1881        new version is now more standards-compliant
1882    o adjoint-related modifications
1883      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1884      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1885      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1886    
1887    checkpoint57e_post
1888    o Adding eddy stress controls a la Ferreira et al.
1889    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1890    
1891    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1892      update output.txt of exp. fizhi-gridalt-hs
1893    o add more "Z" dimensions and associated coordinate vars to MNC
1894    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1895    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1896      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1897      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1898      months and years.  Requires pkg/cal.
1899    o diagnostics: add pickup functionality
1900      - off by default for backwards compatibility
1901      - current version only uses MDSIO -- MNC will be added
1902    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1903    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1904    
1905    checkpoint57d_post
1906    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1907    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1908      output from the diagnostics package
1909    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1910    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1911      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1912    o add coordinate variables to the MNC output from the diagnostics package
1913    o change MNC-flags default value: true when useMNC=TRUE
1914    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1915      the ability (off by default) to read the grid information using MNC
1916    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1917    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1918    o do snap-shot diagnostics at the middle of the time-interval (instead of
1919      at the end).
1920    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1921      new test for AIM with thSIce + slab-ocean
1922    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1923    o move state variable diagnostics to the beginning of the time step ;
1924      (note: still needs some work specially for snap-shot diagnostics)
1925      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1926    
1927    checkpoint57c_post
1928    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1929    o generate new output.txt files on faulks with g77 & the new -ieee option
1930    checkpoint57c_pre
1931    
1932    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1933      update output.txt of exp. global_ocean.90x40x15
1934    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1935      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1936    o add saltFlux(+File) forcing capability with periodicExternalForcing
1937    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1938    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1939    o improvements for the MNC output from DIAGNOSTICS:
1940      - correct handling of the unlimitied dimension
1941      - all dims now have associated coordinate variables
1942      - variables located at U, V, and Corner ("Z") points are now written
1943        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1944        *all* data points are output
1945    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1946    o added pkg/seaice/seaice_monitor.F
1947    o mdsio_readfield.F can now read files visible only to master MPI process.
1948    o pkg/seaice: some test code for ice-modified ocean stress
1949    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1950      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1951      spurious negative numbers for precipitation and humidity.  Will cause
1952      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1953    o pkg/ctrl/
1954      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1955        May be enabled via doPackDiag
1956      *  introduce z-scaling of
1957         + gradient (doZscalePack) and
1958         + control (doZscaleUnpack)
1959    o pkg/mdsio/
1960      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1961      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1962    
1963    checkpoint57b_post
1964    o simplify options in diagnostics_fill arguments (remove weird combinations)
1965    o fix MNC coordinate variables so that they now contain per-face index
1966      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1967      general, EXCH2 grids are only aligned to a "local" coordinate system
1968    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1969    o Implement instantaneous output within pkg diagnostics:
1970      setting a negative frequency in data.diagnostics produces
1971     "snap-shot" output (as opposed to time-average if freq > 0)
1972    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1973      NOTE: change ptracer diagnostics name: use 2 characters to work with
1974            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1975    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1976      becomes the coordinate variable for the 'T' dimension
1977    o add CF-style coordinate variables to MNC
1978      - just a first cut:  numbers are meaningless on the cubesphere and
1979        missing along the T axis but otherwise it works!
1980    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1981    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1982    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1983      this is based directly on what the model compute, so that the content of
1984      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1985    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1986    o clean up build options files for SunOS, in particular
1987      - remove -traditional from xmakedepend
1988      - change -xarch=v9 to -xarch=native for f77
1989      - restore use of make (not gmake)
1990      - add CC=gcc if using g77
1991    o changes per discussion of AM, JMC, & EH3 today:
1992      - move redundant "grid" variables out of "state" -- in preparation of
1993        creating proper CF-style coordinate variables and in recognition
1994        that any/all grid variables can be easily copied (eg. w/NCO) from
1995        the grid files into any of the other NetCDF files
1996      - *always* output grid variables with MDSIO (this will eventually be
1997        changed)
1998      - output MNC grid file if useMNC is true
1999    o every instance of _END_MASTER() has been found and replaced with
2000      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2001      preprocessors
2002    o re-arrange diagnostics pkg initialisation:
2003     - allow each package to extend the available diagnostics list
2004     - add some checking and fix small problems (multi-threaded, ...)
2005     - new S/R diagnostics_fill (replace fill_diagnostics):
2006       look through the short list of active diag. (instead of the long list)
2007       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2008    
2009    checkpoint57a_post
2010    o this set of changes restores TAMC compatibility
2011      tested for global_ocean.90x40x15 adjoint on trough
2012      (what a pain)
2013    
2014    checkpoint57a_pre
2015    o some modifs in tools/build_options for sunos
2016    o call ctrl_pack for ctrl at end for optimcycle=0
2017    
2018    checkpoint57
2019    o add horizontal bi-harmonic viscosity for vertical velocity
2020      - new parameter viscA4W (defaults to viscA4)
2021      - affects only non-hydrostatic code
2022      - to be done: no-slip lateral boundary conditions
2023    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2024    o implement Implicit Vertical advection for pTracers
2025    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2026      (implemented also for implicit vertical diffusion & advection)
2027    o OBCS: extend application of tracer open boundary conditions
2028      to a strip beyond the boundary of width Olx/Oly
2029    o add call monitor to TAF set of required calls (flow directives)
2030      and include in natl_box_adjoint
2031    o untangle a few ifdefs related to cost, ctrl, autodiff
2032      untangel a few ALLOW_ECCO_OPTIMIZATION
2033    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2034      (theta2, salt2 in ecco_cost_weights)
2035    
2036    checkpoint56c_post
2037    o OBCS as control variables
2038      - update ctrl_ad_diff.list, obcs_ad_diff.list
2039      - remove balance of obcs controls from default
2040      - fix index bug nobcs in ctrl_init
2041      - fix dummy fields filen in ctrl_pack
2042      - add dummy weights for obcs
2043    o lsopt: comment out fort.94 output
2044    o optim:
2045      - remove unnecessary header files
2046      - adjusted namelists
2047      - add xerbla.F to Makefile
2048    o exf:
2049      - multiple modifications of exf_check_range
2050      - unit change in exf_init_runoff from [m/year] to [m/s]
2051    o mdsio:
2052      - i/o-vector change debugLevel from debLevA to debLevB
2053    
2054    checkpoint56b_post
2055    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2056      is called from DO_THE_MODEL_IO
2057      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2058      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2059      - clean up PTRACERS_WRITE_TIMEAVE a little
2060    o add another verification experiment that tests both the cfc-pkg and
2061      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2062      reactive tendencies treated inline with regular timestepping
2063    o testreport previously did a lousy job of comparing small numbers, so
2064      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2065      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2066      testreport.
2067    o ptracers_monitor: bug fix for MPI
2068    
2069    checkpoint56a_post
2070    o GCHEM: finish reorganizating the package
2071      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2072        (introduces another 3D-array for each passive tracer, but only if
2073        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2074        gchemTendency is not needed because the timestep is done separately)
2075      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2076      - GCHEM is now---more or less cleanly---separate from PTRACERS
2077      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2078        so clear to me how that should be done in a general way.
2079    o CFC: improve formatting of output in CFC_ATMOS
2080    o PTRACERS:
2081      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2082        that ALL experiments with ptracers enable can be checked. This makes
2083        GCHEM_MONITOR obsolete.
2084      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2085        monitorFreq
2086      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2087    o add PTRACERS (PTR0[1-5]) to testreport output
2088    o exf_check_range:
2089      * default changed to .TRUE.
2090      * will check values for niter0 if debLevA, every timestep if debLevB
2091      * STOP in exf_check_range if 'out of range'
2092      * range chosen generous to allow for potential extema
2093      TBD: a version with stricter range
2094           permitted range would be runtime parameters
2095    o GMredi:
2096      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2097      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2098      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2099    o GCHEM:
2100      - move call to GCHEM_FORCING_SEP, so that it is now called before
2101        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2102      - introduced a useGCHEM runtime flag and applied it everywhere.
2103      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2104        this flag is now only visible within GCHEM-pkg routines.
2105      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2106        be replaced by a 3D array that is computed before thermodynamics; for
2107        this, the tracer ID iTracer had to be included into the parameter list
2108        of ptracers_forcing
2109      - set up forward_step to call gchem_forcing, that will replace
2110        gchem_forcing_int in ptracers_forcing
2111      - cleaning up
2112    o small cleaning of exch2: remove files that are also in eesupp/src
2113    
2114    checkpoint56
2115    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2116    o mnc: cleanup "full" files--fixes out-of-memory problem
2117    o ECCO-GODAE
2118      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2119      * fully merged and updated from SIO code
2120        windstress sign change affects
2121        - exf_inscal_[u/v]stress
2122        - sign of xx_tau[u/v] adjustments
2123        - signs in cost_scat
2124      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2125      * natl_box_adjoint updated and compressed
2126      * 2-level checkpoint switch added
2127        (tested in EXP. 1 of natl_box_adjoint)
2128      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2129    o SVD
2130      * first complete, non-hacked version for SVD calculations
2131      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2132        performed via direct access files admtlm_vector.it????
2133        (via ctrl_[un]pack)
2134      * optimcycle is used for ARPACK iteration counter
2135        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2136      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2137        and add linear transforms where necessary
2138      * controls are initial/final SST, SSS (can be extended; need to check
2139        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2140    o mdsio: filename info to both stderr, stdout
2141    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2142      from sign change
2143    
2144    checkpoint55j_post
2145    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2146      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2147    o add consistent build directories and .cvsignore files to verification
2148    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2149    o make all subroutines 30 or less characters in length for certain older
2150      compilers to work (a thorough search only turns up two routines in
2151      pkg/ptracers)
2152    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2153      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2154    
2155    checkpoint55i_post
2156    o change arrays for total vertical diffusivity (2.D if explicit,
2157      3.D if implicit) ; each ptracer uses its own background value.
2158    o added mnc/NetCDF output capability to ocn_compon_interf
2159      - added bits to verification/cpl_aim+ocn so that it can run on
2160        ITRDA and other clusters without the mpirun "-wd" option
2161    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2162      configuration
2163    o give MNC the ability to create additional files rather than
2164      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2165      - the default is just less than 2GB which is a practical limit
2166        on many systems
2167    o Compute the non-local term using either KPP vertical diffusivity (=default)
2168       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2169    
2170    checkpoint55h_post
2171    o add verification test "vermix"
2172    o remove all the *_ioinc flags and replace with the single global
2173      outputTypesInclusive flag
2174    o allow to set a vertical profile of vertical diffusivity for T & S
2175    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2176    o useMNC moved from data.mnc to data.pkg
2177    
2178    checkpoint55g_post
2179    o Renaming carbon AD experiments to comply with testreport conventions
2180    o Updating adjoint of Held-Suarez hs94.1x64x5
2181    o Fixing directives for non-ECCO forward_step, after ECCO directives
2182      have been fixed to avoid recomp. of do_oceanic_phys
2183      Works well for global_ocean.90x40x15,
2184      but recomp. issue remains for carbon
2185    o Updating adjoint output for natl_box_adjoint after
2186      pkg/ecco has been modified (see taga c55d_post)
2187    
2188    checkpoint55f_post
2189    o rename to timeave_init_fixed
2190    
2191    checkpoint55e_post
2192    o some delicate re-shuffle of store directives to avoid one
2193      extra call of do_oceanic_physics
2194      affects ecco_the_main_loop.F, do_oceanic_physics.F
2195      checkpoint_lev1_directives.h
2196    o NB: this may break global_ocean adjoint temporarily,
2197      but it is clear how to fix it. Will do later, need this now.
2198    
2199    checkpoint55d_post
2200    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2201    o ecco_cost_weights is modified to 1x1 runs
2202    o modifs to allow observations to be read in as
2203      single file or yearly files
2204    o enable to read exf forcing fields as either
2205      single file or yearly files (flag useExfYearlyFields)
2206    checkpoint55d_pre
2207    
2208    o switch between 2-level and 3-level checkpointing
2209    o add ability of MNC to write local and "partial" (eg. 2D slices where
2210      the full 3D field is never actually stored) arrays to NetCDF files
2211      with the correct (that is, the complete multi-dimensional) set of
2212      array indicies
2213      - used in mom_vecinv() to write the diagFreq output
2214      - tested (demonstrated) in verification/aim.5l_cs
2215    o further mnc-ification
2216      - add verification/lab_sea to the list with mnc setups
2217      - fix undefined mnc v-names in cd_code
2218      - add kpp to mnc output (both snapshot and timeave)
2219    o non-hydrostatic code
2220      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2221        in calc_gw.F
2222      - defaults to viscAh
2223      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2224        friction or Leith) in non-hydrostatic mode, as long as there is
2225        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2226    o pkg/cost
2227      extend simple cost functions to treat time mean quantities
2228      (T,U,V) via cost_accumulate_state from cost_tile
2229    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2230        be 2 times larger than the minimum size the advection scheme requires.
2231        now get a perfect conservation of salt in advect_cs test-exp (updated)
2232    o GGL90 (Gaspar's TKE mixed layer)
2233      - add horizontal diffusion of TKE, requires exchanges in
2234        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2235        default. In OPA there is no horizontal diffusion of TKE but the
2236        mixing coefficients are computed from a horizontal average of TKE of
2237        6 points or so. I think that diffusion has a little more physical
2238        justification.
2239      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2240        was in vain)
2241      - mask tke-variable in ggl90_init
2242    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2243    o fix biharmonic diffusion on CS-grid.
2244    o more obcs stuff
2245      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2246        for reading boundary values. This routine is called from
2247        obcs_prescribe_read
2248      - updated obcs_check
2249      - changed sponge layer relaxation parameter units for days to seconds
2250      - turned off sponge layer by default
2251      - changed argument list of OBCS_CALC to myTime+deltaTclock
2252      - fixed about 35 bugs in obcs_external_fields_load
2253    
2254    checkpoint55c_post
2255    o obcs stuff
2256      - new runtime flags useOBCSprescribe, useOBCSbalance
2257      - re-arranged obcs_calc
2258      - moved exf_getobcs to obcs_prescibe_read
2259        obcs_prescibe_read is called after ORLANSKI stuff
2260        and independent of it (executable can contain all).
2261      - updated obcs_check
2262      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2263        These may be necessary only if tangential velocities are
2264        prescribed at OB, not sure, needs testing.
2265    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2266      which simplifies the calls and passes the ifc check-bounds test
2267    
2268    checkpoint55b_post
2269    o add a 2D scalar, Z location, exchange_2 routine.
2270    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2271      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2272      affects advect_cs results (for the wrong reason): update output.txt
2273    o use a more standard discretization for biharmonic viscosity ;
2274     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2275      affects results of dome set-up: update output.txt
2276    o fix gad_advection.F (CubedSphere part), back to version 1.23
2277    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2278    
2279    checkpoint55a_post
2280    o merged code to
2281      * prescribe/read time-dependent open boundaries
2282        (works in conjunction with exf, cal)
2283      * sponge layer code for open boundaries
2284      * each boundary N/S/E/W now has its own CPP option
2285        (healthy for the adjoint)
2286    
2287    checkpoint55
2288    o up-to-date adjoint of previous breaks
2289      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2290      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2291      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2292      - carbon: * remove tr1-related adjoint verification
2293                * add ptracer as control variable
2294    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2295      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2296    
2297    checkpoint54f_post
2298    o in verification/carbin/ remove experiment related to
2299      ALLOW_PASSIVE_TRACER (array tr1 etc)
2300      code_ad/ input_ad/ results_ad
2301    
2302    o add two new packages
2303      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2304        + subject to optimization (memory)
2305      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2306        + subject to reordering (many GOTOs in the original code)
2307        + so far opps is called for every (i,j) point, and then operates in
2308          the vertical; one may want to reorder the scheme in order operate in
2309          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2310          fields)
2311    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2312      - all verification tests compile and run with linux_ia32_g77
2313      - defaults are compatible with current input files--nothing
2314        should change if you were not previously using MNC
2315      - MNC output has been added in numerous places (eg. timeave)
2316        but there are still a few writes not yet do-able with MNC
2317        (this is in progress)
2318      - flags now allow for either/or/both use of MDSIO and MNC and
2319        documentation will soon follow
2320      - numerous small formatting cleanups for ProTeX
2321    o add version info (via BUILD_INFO.h) to MNC and stdout
2322    
2323    checkpoint54e_post
2324    o add two new packages
2325      - pp81 (Packanowski and Philander, 1981), Richardson number and
2326        stratification dependent mixing
2327      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2328      - these scheme operate in a similar manner as KPP (without ghat, of
2329        course), however there is only one diffusivity that is used for both
2330        temperature and salinity (and passive tracers)ç
2331    o add offline package
2332    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2333      provided by Stephanie Dutkiewicz
2334    o genmake2: add ability to search for C compilers and cleanup test output
2335      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2336    
2337    checkpoint54d_post
2338    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2339    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2340      leading to additional shift by 5 days each year of integration
2341       (i.e. leading to considerable offset over the years)
2342    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2343    o start with no AB and no initial filtering (staggerTimeStep):
2344      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2345    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2346      (external loading & cpl import/export stay in forward_step.F)
2347    o update coupling interface to work with new staggerTimeStep
2348    o change MDSIO ptracers_pickup.
2349    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2350    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2351    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2352    
2353    checkpoint54c_post
2354    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2355      this affects (truncation error) output.txt of test-exp:
2356       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2357    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2358    o change Qnet to always be the net heat flux, (+upward).
2359      affects (truncation error) output of natl_box exp.: updated
2360    o define the max number of passive tracers in PTRACERS_SIZE.h
2361    o start to test mnc routinely in exp0
2362    o add sea-ice loading (sIceLoad) as a new forcing field.
2363    
2364    checkpoint54b_post
2365    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2366       impressive on Altix and Opteron systems)
2367    o diagnostics can now write NetCDF files through the mnc package
2368    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2369    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2370    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2371      affects (truncation error) output of lab_sea & natl_box exp.: updated
2372    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2373    
2374    checkpoint54a_post
2375    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2376    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2377    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2378    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2379      + internal_wave (shift in writing cg2d_ini_res)
2380    checkpoint54a_pre
2381    
2382    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2383      - modified verification/lab_sea and natl_box_adjoint accordingly
2384    
2385    checkpoint54
2386    checkpoint53g_post
2387    o prepare splitting of thermodynamics: store convect.counter in common block
2388    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2389      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2390    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2391    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2392    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2393    o restore adjointability
2394    
2395    checkpoint53f_post
2396    o modifications that affect AIM experiment results (update output.txt):
2397      - no advection of S at top interface Nr (pkg/generic_advdiff)
2398      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2399    o AIM pkg:
2400      - include stability function into surf.Flux derivative relative to Tsurf
2401      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2402    
2403    checkpoint53e_post
2404    o merged cylindrical coord configuration
2405    o added rotating_tank experiment
2406    checkpoint53e_pre
2407    
2408    checkpoint53d_post
2409    o faulks upgraded: re-generate output.txt that have changed:
2410       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2411    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2412    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2413    o added Sadourny discretization of Coriolis
2414      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2415      - re-enabled use of omega3 (useAbsVorticity)
2416    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2417      vector-invariant equations
2418      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2419    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2420      hopefully without new bugs
2421      - still to do: biharmonic friction for non-hydrostatic w
2422    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2423    o regenerated output for global_ocean_ebm (using -ieee)
2424    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2425      of mom_common/
2426      - simple re-arrangement of instructions within computing loop
2427    checkpoint53d_pre
2428    
2429    checkpoint53c_post
2430    o new version of coupler for AIM+thSIce and Ocean models
2431     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2432     - land: change Evaporation of snow
2433     - aim with thSIce: fix bug in snow-precip.
2434    o changes to calc_gw.F
2435     - bug fix for w^2 term near the bottom boundary
2436     - (hopefully) improve the lateral slip boundary condtions for use with
2437        partial/looped cells
2438      - because the bug fix changes two verification experiments anyway (exp5
2439        and plume on slope), change the lateral boundary condition from half slip
2440        to the value of no_slip_sides
2441    o ebm package wasnt quite up to the parallel task. Fixed that.
2442    o Adjoint of EBM package + verification
2443      * TLM OK
2444      * ADM not sufficient accuracy yet (needs further testing)
2445    
2446    checkpoint53b_post
2447    o Commiting new energy balance model to repository
2448      * package is pkg/ebm
2449      * verif. is verification/global_ocean_ebm
2450      * references are in ebm_driver.F
2451    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2452    C        Global thermohaline circulation. Part I:
2453    C        Sensitivity to atmospheric moisture transport.
2454    C        J. Climate 12(1), 71-82
2455    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2456    C        Global thermohaline circulation. Part II:
2457    C        Sensitivity with interactive transport.
2458    C        J. Climate 12(1), 83-91
2459    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2460    C        Destabilization of the thermohaline circulation
2461    C        by atmospheric eddy transports.
2462    C        J. Climate 7(12), 1870-1882
2463    o Will need long integration testing.
2464    checkpoint53b_pre
2465    
2466    o created pkg/mom_common in preparation for variable viscosity code
2467    o renamed and split ini_mnc_io
2468    o pkg/land: only liquid water can diffuse or run-off
2469    o AIM using land: soil wetness availability account for snow
2470    o added printMapIncludesZeros to EEPARMS namelist
2471    
2472    checkpoint53a_post
2473    o restore TAMC compatiility for exf_constants.h
2474      (no usage of _d in .h)
2475    o Additional storing in KPP in an attempt to fix
2476      TAMC problem with adjoint of KPP code.
2477      (no success...)
2478      Identical code works fine with TAF.
2479    o Fixed verification/natl_box_adjoint experiments.
2480      Initial conditions for Experiments 4 and 5 are now
2481      set to "SEAICE_initialHEFF=0", which is more reasonable,
2482      and hence gives results closer to that of Experiment 2.
2483      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2484    
2485    checkpoint53
2486    o stable checkpoint with up to date adjoint
2487      TLM tests only run for 1st grdchk at the moment. Its unclear if
2488      this is a code problem or a problem with resetting code for g_
2489      variables that is being autogenerated wrong.
2490      Otherwise:
2491       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2492       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2493         are both still in chaos following their security messes.
2494    
2495    checkpoint52n_post
2496    o various build (mostly genmake2) changes including:
2497      - ability to build/run more easily within Cygwin and MacOS X
2498      - more complicated Makefiles with a stronger dependence on Gnu Make
2499    o pkg/seaice modifications
2500      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2501        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2502        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2503      - changed proxy for geostrophic velocity and updated
2504        verification/lab_sea/results/* accordingly
2505      - removed ADI dynamic solver from pkg/seaice
2506      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2507        they caused a segmentation fault under certain circumstances
2508      - removed unused field WATR
2509    o bug fix in exf-package:
2510      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2511         now reflect that.
2512    o small fixes in the cal-package:
2513      - set reference date to first of January for the 'model'-calendar
2514      - failing of cal_CheckDate in cal_FullDate now actually results in a
2515        warning
2516    o small modifications in exf-package to increase flexibility:
2517      - change climtempfreeze from a constant to a runtime parameter that
2518        is specified in data.exf_clim (default = -1.9)
2519      - introduce runtime parameter windstressmax (default = 2.0) that is
2520        specified in data.exf
2521    o fix in pkg/thsice:
2522      - update Evap (Tsf changes) to be consistent with Latent heat flux
2523      - maintain snow precipitation unchanged (even if Tsf >=0).
2524     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2525    
2526    checkpoint52m_post
2527    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2528      this does not change any of the results, because myIter=0 in swfrac always
2529      lead to jwtype=2 (the default anyway), but the call makes little sense
2530      as a default
2531    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2532    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2533      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2534    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2535    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2536    o extending useSingleCpuIO option to work with new exch2 I/O format
2537      - old-style, missing-tile I/O is still accessible by defining CPP
2538        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2539    o monitor package can write to NetCDF files and/or STDOUT
2540    o fix re-definition bug in MNC_GRID_INIT_ALL()
2541    o doc/api_reference added
2542      - a framework for building an API Reference Manual using all
2543        the "protex" comments embedded in the code
2544      - see pkg/generic_advdiff, pkg/mnc for examples
2545    o MNC:
2546      - make myThid the last argument for all subroutines
2547      - new default for the grid files: NO halos
2548      - add useMNC and other run-time flags
2549      - separate per-file-group handling of the unlimited dimension
2550      - early initialization of MNC w/ flags read at the eeboot stage
2551        and lookup tables set in initialize_fixed
2552      - write all MNC output to a freshly-created directory
2553    o thermodynamics sea-ice (thsice) is now tested with testreport.
2554    o test exp. advect_cs: use the standard cs32 grid ; update output.
2555    o Added functionality to grdchk:
2556      pick global i,j,k position (or nearest wet) where to perform check.
2557    
2558    checkpoint52l_post
2559    o new land formulation:
2560      a) use ground enthalpy as prognostic variable to ensure exact
2561         energy conservation.
2562      b) account for water temperature and for latent heat of freezing
2563         in all processes (rain, run-off, ground storage)
2564      c) compute surface and ground temperature implicitly.
2565    o aim_v23 modification for new land model:
2566      a) Treat separately land / ocean / sea-ice surface fluxes
2567         to allow implicit computation of land & sea-ice surface temp.
2568      b) add snow precipitation.
2569    checkpoint52l_pre
2570    
2571    o fix problem (when 1 tile is empty) in min/max monitor.
2572    o fix bug in timeAve (u,vZetatave in common block)
2573    o no restoring terms under ice for pkg/seaice
2574    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2575    o bug fix for pkg/seaice pickups
2576    o change MNC call locations and add coordinate attributes
2577    o mask vorticity at the corner ; affects global_ocean.cs output
2578    o fix ini_curvilinear_grid ; test CS experiments with mpi
2579    o aim.5l_cs: modify sea-ice fraction input file ; update output
2580    o exf: Adding simple range check routine for exf fields after read
2581    
2582    checkpoint52k_post
2583    o removed top-level directory "diags"
2584      - we migrated these functions to pkg/timeave a long time ago
2585    o fixed bug introduced in pkg/monitor
2586    o accuracy ctrlprec = 32 insuffient for gradient checks using
2587      averaged fields (I/O via cost_averages)
2588      -> use ctrl.h in active_file*.F to control I/O precision.
2589    o paramter list of CALL ADTHE_MAIN_LOOP
2590    o added initial do_the_model_io to ecco
2591    o set all ...Freq to zero after cost_final
2592      taveFreq, dumpFreq, pChkptFreq
2593    o MAIN and ECCO differentiability restored
2594    
2595    checkpoint52j_post
2596    o fix nchklev in tamc.h for global_ocean...
2597    o Bringing flow and store directives up-to-date
2598    o Really weird thing!
2599      call do_the_model_io from the_main_loop with parameters
2600      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2601      TAF places a faulty re-call of initialise_varia
2602      after cost_final call which should not be there!
2603    checkpoint52j_pre
2604    
2605    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2606      error messages
2607    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2608    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2609      debug output
2610    o modfied mdsio_writefield.F to handle non-global files under exch2
2611    o update AIM Cubed-Sphere exp (aim.5l_cs):
2612      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2613    o update AIM Equatorial Channel exp:
2614      use standard aim_v23 pkg and change the SST fields to be more realistic.
2615    o globalFile now works with exch2
2616    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2617      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2618    o limit timeave output for hi-res integrations
2619    
2620    checkpoint52i_post
2621    o removed CPP_EEOPTIONS.h from verification/*/code
2622    o updated the tiling for global_ocean_pressure
2623    checkpoint52i_pre
2624    
2625    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2626      the old pkg/aim).
2627    
2628    checkpoint52h_pre
2629    o shortened offending lines in exch2_send_rx?.template
2630    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2631    o genmake2: add build & execute test for NetCDF code
2632    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2633      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2634    o added useSingleCPUIO flag to monitor.F and mon_out.F
2635    o added temporary hack for sea-ice dynamics on the cube:
2636      metric terms are ignored and it is assumed that
2637      there is no sea-ice on cube faces 1, 2, 4, and 5.
2638    
2639    checkpoint52f_post
2640    o added exch2 cube routines to pkg/exch2
2641    o modified hs94.cs-32x32x5 to use it
2642    o added new grid files to hs94.cs-32x32x5
2643    checkpoint52f_pre
2644    
2645    checkpoint52e_post
2646    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2647      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2648    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2649      to work with implicit vertical advection and AB ;
2650    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2651    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2652     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2653    checkpoint52e_pre
2654    
2655    o fix bug in impldiff when Nr=1 or Nr=2.
2656    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2657    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2658    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2659      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2660    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2661    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2662    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2663    
2664    checkpoint52d_post
2665    o re-tiled many expts to allow comparison in multi-processor mode
2666      - updated output accordingly
2667      - changed hs94.128x64x5 to use intial T from file rather than use the
2668        random number generator
2669    o add infrastructure in model routines for fizhi and gridalt packages
2670    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2671    o changes to permit hi-res, cubed-sphere, configuration
2672      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2673      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2674      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2675        of surface winds for the cube
2676      (A verification experiment, based on global_ocean.cs32x15, but with
2677       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2678       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2679       complete with example surface forcing files and matlab scripts to look
2680       at the output and compare it with that of global_ocean.cs32x15.)
2681    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2682       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2683       to conform to the common rule.
2684    o check-in the first version of the coupler + interfaces for multi-components
2685       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2686       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2687       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2688       - ocean and atmos. share the same horizontal grid (no interpolation).
2689       - exchanges between component and coupler is done in forward_step
2690    o new verification experiment, cpl_aim+ocn:
2691       coupled ocean - AIM atmosphere on cs32 grid.
2692    
2693    checkpoint52d_pre
2694    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2695    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2696    
2697    checkpoint52c_post
2698    o Fixing OPTIONS files for use of exf:
2699      - ALLOW_ECCO not needed
2700      - ECCO_CPPOPTIONS.h should not be included from
2701        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2702        as has been the case in the past
2703      - All cal/exf related options are currently set in
2704        single header file. Should remain so until we
2705        agree on a consistent new policy.
2706    o Removed all CPP options for cal package.
2707      cal has no more CPP options.
2708    o modified STOREs in GAD_ADVECTION
2709    o corrected key comp. for passkey
2710    
2711    checkpoint52b_post
2712    o new version: "thsice" of thermodynamic sea-ice pkg:
2713     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2714     - modify fluxes but do not change theta directly;
2715     - light cleaning of bulk_force pkg (still needed with thsice).
2716     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2717       + output_thsice.txt to test thsice & bulk_force pkgs.
2718    o put back grid & coriolis monitor output.
2719    checkpoint52b_pre
2720    
2721    o call "do_the_model_io" at the beginning (=> dump initial state)
2722    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2723    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2724      (need info on NUMBER_OF_PTRACERS)
2725    o missing PTRACERS headers in some routines
2726    o default tamc.h in pkg/autodiff supposed to crash
2727      to ensure proper customization
2728    
2729    checkpoint52a_post
2730    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2731      - moved surfaceTendencyTice from pkg/seaice to main code
2732      - subroutine FREEZE_SURFACE now limits only surface temperature
2733        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2734        => new output.txt for global_ocean.cs32x15 & global_with_exf
2735      - keep the old version of FREEZE for backward compatibility;
2736        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2737      - corresponding modifs for TAF directives
2738    o added surface flux output variables to TIMEAVE_STATVARS
2739    o time-averaged output for pkg/ptracers
2740    o fix problem with ECCO-related divided adjoint
2741      snapshot file was missing some ad-variables,
2742      but no warning issued by TAF
2743    
2744    checkpoint52a_pre
2745    o some bug fixes for #undef REAL4_IS_SLOW
2746    
2747    checkpoint52 = ecco_c52_e35
2748    o after testing adjoints of checkpoint51u_post
2749    
2750    checkpoint51u_post
2751    o this is the post-merge tag of the ecco-branch
2752      (needs another clean checkout and re-testing)
2753    o various natl_box_adjoint configs and results
2754      but no input fields
2755    o obcs adjoint not yet merged!
2756    o adding ECCO global 1x1 and 2x2 degree configs
2757    o updated/extended some store directives for seaice
2758    o pkg/ecco now containes ecco-specific part of cost function
2759    o top level routines the_main_loop, forward_step
2760      supersede those in model/src/
2761      previous input data.cost now in data.ecco
2762      (new namelist ecco_cost_nml)
2763    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2764    
2765    checkpoint51t_post
2766    o this is the pre-merge tag of the ecco-branch
2767    
2768    checkpoint51s_post
2769    o cleanup: removed various obsolete #define-s
2770    o pkg/grdchk
2771      - renamed 'ph-grd 3' to 'grad-res'
2772      - merged from ecco-branch
2773        (remaining bug fixes for obcs gradient checks)
2774      - additional high-precision output for testreport
2775        (grep for 'precision_grdchk_result')
2776    
2777    checkpoint51r_post
2778    o cleaned up or removed CPP_OPTIONS.h files
2779    o updated results for some of the tests to reflect the new
2780      optfiles (-ieee: -O0 instead of -O3)
2781    
2782    checkpoint51q_post
2783    o cd_code:
2784      - moved cd_scheme.F -> cd_code_scheme.F
2785      - separate read_checkpoint from cd_code_ini_vars.F
2786      - separated cd_code part from write_checkpoint
2787      - updated AD_SOURCE, generated .flow
2788      - added CD_CODE_VARS.h to the_main_loop
2789      - Moving cd_code specific store dir.s to pkg/cd_code
2790    o ctrl package totally restructured
2791      - pack/unpack now optional and decoupled from
2792        xx_/adxx_ I/O
2793      - ctrl_pack/unpack cleaned
2794        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2795      - confined inclusion of AD_CONFIG.h to where necessary.
2796    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2797    
2798    checkpoint51p_post
2799    o create initial cd_code package
2800      - WARNING: the initialization of fields within packages
2801        is broken because INI_FIELDS (where READ_CHECKPOINT is
2802        called) is called *before* PACKAGES_INIT_VARIABLES.
2803        This seems to be backwards since
2804        1) its important to initially zero the entire field including
2805           the "halo" region
2806        2) zeroing needs to be done *before* reading pickup info
2807           and the pickup call might or might not happen in any
2808           particular run
2809      - this needs an overhaul for R2
2810    o cleanup verification/*/code/GMREDI_OPTIONS.h
2811    o cleanup testreport
2812    
2813    checkpoint51o_post
2814    o bringing AD-related verif's up to date with genmake2
2815      - carbon/
2816      - global_ocean.90x40x15/
2817      - hs.94.1x64x5/
2818      - (front_relax/ )
2819    o (more) consistent directory structure for AD-related verif.'s
2820    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2821    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2822    o bug fix in find_alpha.F for MDJWF:
2823      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2824        change rho -> rho-rhoConst
2825      - replace call find_rho to find_rhonum
2826    o initialisation of rFlx extended to full array (required by TAF)
2827      and shifted to thermodynamics
2828    o removed PTRACERS.h in ptracers routine
2829    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2830    o Correcting initialisations for fVerU, fVerV.
2831    o helping TAF to recognize dependency on kUp for
2832      fVerU, fVerV
2833    o Replacing delZ by delR in pkg/ctrl/
2834    checkpoint51o_pre
2835    
2836    o undid all of cp51 pending some cleanups and discussion
2837    o added the [#include "AD_CONFIG.h"] statement to all files that need
2838       it for adjoint/tl #defines
2839     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2840     o removed tools/genmake since it no longer works
2841    
2842    checkpoint51n_post
2843    o modifications to make FREEZE flux visible to pkg/kpp
2844      - moved surfaceTendencyTice from pkg/seaice to main code
2845      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2846      - subroutine FREEZE now limits only surface temperature
2847        (this means new output.txt for global_ocean.90x40x15,
2848         global_ocean.cs32x15, and global_with_exf)
2849    o added surface flux output variables to TIMEAVE_STATVARS
2850    
2851    checkpoint51n_pre
2852    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2853    o added [#include "AD_CONFIG.h"] to all files that use the following
2854      defines:
2855      - ALLOW_ADJOINT_RUN
2856      - ALLOW_TANGENTLINEAR_RUN
2857      - ALLOW_ECCO_OPTIMIZATION
2858    
2859    checkpoint51m_post
2860    o incorporating changes to get TAMC/TAF working in genmake2
2861      - added new TAMC/TAF targets to the Makefile
2862      - various cleanups related to package handling
2863      - these changes should have no impact on the forward model
2864    
2865    checkpoint51l_post
2866    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2867     - faster algorithm for cal_addtime.F
2868     - higher precision arithmetic, where needed
2869     - pkg/exf *startdate variables changed from calendar date to
2870       model integration time
2871    
2872    checkpoint51l_pre
2873    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2874    o enable to apply restoring on S & T only in a latitude band.
2875    o update output (external_forcing_surf modif. change truncation errors)
2876       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2877    
2878    checkpoint51k_post
2879    o change default to: useNHMTerms=.FALSE.
2880     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2881       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2882     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2883        exp1, ideal_2D_oce
2884     - change data file of oceanic exp (leave the results unchanged for now)
2885       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2886    o set gravitySign automatically according to the vertical coordinate used
2887      (and change sign: back to "logical" value: +1 when R increases downward)
2888    o added an include barrier to the default CPP_OPTIONS.h and
2889      removed the #include "PACKAGES_CONFIG.h" from it
2890    o fix a bug in mom_fluxform (from chk51j_post)
2891    
2892    checkpoint51j_post
2893    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2894    o adjusted some flow directives (dynamics, thermodynamics)
2895    o added cubed-sphere case to test cost function
2896    o heckpoint_lev?_directives.h now include
2897      pkg-specific directives, whenever those are enabled.
2898    o Moving pkg-specific flow directives to corresponding pkg
2899      Moving pkg-specific differentiation list to corresponding pkg
2900      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2901      ---> conventions are
2902           - pkg_ad.flow
2903           - pkg_ad_diff.list
2904           - pkg_ad_check_lev?_dir.h
2905    
2906    checkpoint51i_post
2907    o merge of the branch-genmake2
2908      - knowingly breaks the older genmake
2909      - automatic generation of all ALLOW_${PKG_NAME} defines
2910      - new testreport supersedes older testscript
2911    o large number of package inclusion and header cleanups
2912    checkpoint51i_pre
2913    
2914    o new output for adjoin of global ocean vector invariant
2915    o fix for checkpoint of thermodynamic seaice and bulk_force
2916    o Steph gchem various cleanups
2917    
2918    checkpoint 51h_pre
2919    o fixed some single quotes
2920    o modify gchem pkg to be more versatile
2921    o modifications to clean up dic pkg
2922    o add pkg/cfc
2923    
2924    checkpoint51g_post
2925    o provide links for ARPACK and ADM*TLM
2926    o start removing verification/vero/
2927    o update AD-related stuff
2928      (in particular some IF-statements in model/src/ routines)
2929    o adding to verification/global_ocean.90x40x15/ adjoint of
2930      vector invariant setup
2931    
2932    checkpoint51f_post
2933    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2934    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2935      of tracer Green's fucntions for ocean inversion project.
2936    
2937    checkpoint51f_pre
2938    o Added on-the-fly spatial interpolation capability
2939        "USE_EXF_INTERPOLATION" to pkg/exf.
2940      - This is a temporary Cartesian-grid hack until
2941        the super-duper ESMF coupler becomes available.
2942      - See verification/global_with_exf/README for usage example.
2943      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2944        flags and modified pkg/seaice accordingly.
2945    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2946        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2947        non-local transport term.
2948    
2949    checkpoint51e_post
2950    o pkg/mom_vecinv:
2951      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2952      - add time-ave diagnostic of vorticity advection.
2953    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2954    o atmospheric geopotential: - include water vapor effect;
2955                                - use p^kappa in p* scaling.
2956    o land pkg: read initial state from files.
2957    o AIM : add stratospheric drag in the upper level
2958    
2959    checkpoint51d_post
2960    o change function ILNBLNK (=> last non-blank char.) to return zero
2961      (instead of the string length) when the string. char is empty
2962    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2963    o modif's to restore TAMC compatibility
2964      - avoid "_d" constructs in PARAMETER declarations
2965      - avoid interrupting lines by comment lines
2966    o Use cluster local disks for purely local I/O
2967      vs. globally visible disks needed for ctrl stuff
2968      (merged from ecco-branch)
2969      - new active_file_loc... and mdsio_..._loc routines
2970      - affected packages: autodiff, ctrl, grdchk, mdsio
2971    
2972    checkpoint51c_post
2973    o introducing integer flag debugLevel
2974      - debLevZero: suppress all output
2975      - debLevA: standard
2976      - debLevB: equivalent to current debugMode=.TRUE.
2977    o introducing pathname variable mdsioLocalDir for mdsio
2978      that can be specified at runtime
2979      (relevant for cluster I/O to local disk)
2980    `
2981    >>>checkpoint51b_post
2982    adjoint of ptracers
2983    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2984    o extended state in checkpoint_lev?, etc.
2985    o alternative ctrl/cost with tr1 or ptracer
2986    o new comlev1_bibj_ptracers
2987    o new ptracers.flow
2988    o made ptracers_forcing same as external_forcing_s
2989    o added verification for adjoint with ptracers
2990      - adm. grdchk fail so far
2991      - tlm. grdchk OK
2992      - checked tapelev/comlev recomputations: OK
2993    <<<checkpoint51b_pre
2994    
2995    checkpoint51a_post
2996    o added code for biogeochemistry package
2997      - new pkgs: dic, gchem
2998      - new subroutine in ptracers
2999    o modify code for biogeo packages
3000      - in model/src and pkg/ptracers
3001    
3002    checkpoint51
3003    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
3004      - autodiff, ctrl, exf, grdchk, seaice
3005      kept separate packages
3006      - cost, ecco, obcs
3007    o updating verification/internal_wave, verification/lab_sea
3008      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
3009    
3010    checkpoint50i_post
3011    o Preparing next differentiable checkpoint and sync
3012      of MAIN vs. ecco-branch
3013      - 1st step: this one is differentiable
3014      - 2nd step: next(! not this) checkpoint will have updated packages
3015                  from ecco-branch)
3016    
3017    checkpoint50h_post
3018    o new package "land": provide surface BC for AIM.
3019    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
3020    o AIM: use true log-P extrapolation for near surface temp (= as in
3021        F.Molteni paper) ; update aim.5l_cs output.
3022    o New variable in PARM03 for more flexible pickups
3023    o somewhat cleaned package initialisation sequence for
3024      ctrl/ cost/ ecco/ in packages_... routines
3025    
3026    checkpoint50g_post
3027    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
3028      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
3029      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
3030        made the default because of faster convergence than ADI
3031    
3032    checkpoint50f_post
3033    o exf totally restructured
3034      - replaced all exf_set_ routines by one generic exf_set_gen.F
3035        and made sure it's still differentiable
3036      - split exf_getffields.F into new exf_bulkformulae.F
3037      - exf_inscal_/exf_outscal_ suffixes consistent with field names
3038      - updated adjoint/makefile and relevant verif. accordingly
3039    
3040    checkpoint50f_pre
3041     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
3042          + change Evap over land. (update aim.5l_cs output)
3043     o added missing .cvsignores and made uniform across expts
3044     o changed configuration of tidal_basin_2d expt
3045     o added pkg/debug functions for tracing code in fatal crashes
3046     o tidied pkg/monitor to use MONITOR_OPTIONS.h
3047     o new fn in pkg/monitor to stop model if solution grows too big
3048     o removed lots of single quotes from comments
3049    
3050    checkpoint50e_post
3051    o make KPP work with PTRACERS
3052     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
3053       nearly a copy of kpp_transport_s
3054     - there is no analogue to SurfaceTendencyS, so I have to use
3055       gPtr(of the surface layer) instead
3056    o add a new platform SunFire+mpi (SunFire 15000) to genmake
3057    checkpoint50e_pre
3058    
3059    checkpoint50d_post
3060    o change kpp output from multiple-record state files to single-record state
3061      files analogous to write_state.F
3062    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
3063      analogous to the cg2d-related output.
3064    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
3065      so that writing to internal file fn (with length 512) fails.
3066    checkpoint50d_pre
3067    
3068    checkpoint50c_post
3069    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
3070    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
3071    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
3072    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
3073    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
3074    
3075    checkpoint50c_pre
3076    Merging from release1_p13:
3077    o bug fix for pkg/seaice dynamic solver
3078    o Added SEAICE_initialHEFF to pkg/seaice
3079    
3080    checkpoint50b_post
3081    o store u*,v* in gU,V instead of in guNm1,gvNm1
3082    o in order to put the momForcing out of the Adams-Bashforth:
3083      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
3084      to timestep.F
3085    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
3086    o re-generate output for highly sensitive test-exp:
3087       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
3088    
3089    checkpoint50b_pre
3090    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
3091    o corrected CPP option mismatch in exf_Bulk... functions for case
3092      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
3093    
3094    checkpoint50a_post
3095    o Bug fix for merging between c50 and KPP.
3096      ikey was passed from thermodynamics to kpp_calc via
3097      common block rather than being recomputed in kpp_calc,
3098      in contradiction with new key itdkey.
3099      New key ikppkey created, and tamc.h headers updated.
3100    
3101    checkpoint50
3102    - 2nd step of merge with ecco-branch:
3103      merge changes in ecco-branch back into main trunk
3104    - bug fix in find_alpha
3105    - more storing in gmredi_calc_tensor.F, kpp_routines.F
3106    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
3107    - merged some sliced AD support routines
3108    
3109    checkpoint49
3110    merged from ecco-branch:
3111    o exf:
3112      - Enable initialisation of forcing fields to constant
3113        (runtime) values.
3114      - in exf_getffields.F
3115        Reduce i-/j-loop to interior domain, discarding overlaps.
3116        That also fixes wrong TAF-key computations for key_1, key_2
3117        with bulf formulae.
3118      - exf_init.F modify #ifdef for exf_init_evap
3119      - exf_getffieldrec.F, ctrl_getrec.F
3120        The following INT-usages are not safe:
3121          fldsecs  = int(fldsecs/fldperiod)*fldperiod
3122          fldcount = int(fldsecs/fldperiod) + 1
3123        and were modified.
3124    o autodiff: checkpoint_lev...
3125      - updated storing for bulk formulae (some arrays were missing)
3126      - added state for seaice package
3127      - synchronized with main branch
3128    o DIVA:
3129      Modif.s in
3130      - the_main_loop.F
3131      - the_model_main.F
3132      and added cost_final_restore.F cost_final_store.F
3133      o With these changes, it is possible to fully separate
3134        the first forward run to compute the cost function (mdthe_main_loop)
3135        and adjoint runs over individual DIVA intervals (adthe_main_loop)
3136        into separate model executions.
3137        This enables better tuning of DIVA to given queue sizes.
3138      o Loss of cost function value in consecutive DIVA runs is
3139        fixed by storing to 'costfinal' file.
3140      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
3141        beginning/end of adjoint integration is accounted for.
3142      The current changes apply to TAF-1.4.26.
3143      TAF has one remaining bug, requiring one manual change
3144      (see MITgcm manual).
3145    o cal: synchronized between MAIN and ecco-branch
3146    
3147    checkpoint48i_post
3148    o Changes to restore differentiability of code w.r.t. previous tag
3149      (mostly adding new routines to make list and replacing
3150      pressure by totPhiHyd).
3151    o Updated and merged grdchk package
3152      - has both ADM and TLM checks
3153      - works for single- and multi-proc.
3154      - output cleaned
3155      - worked successfully for parallel DIVA
3156    o genmake:
3157      - Adding -platform=SP4
3158      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
3159    o Modif. for DIVA:
3160      ctrl_unpack should not be called in intermediate DIVA interval.
3161      (similar thing would apply for active files such as
3162      tbar, sbar, psbar, which should not be reinitialised;
3163      only relevant for ecco-branch)
3164    
3165    checkpoint48h_post
3166    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
3167    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
3168    o Added SEAICE_initialHEFF to pkg/seaice
3169    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
3170    
3171    checkpoint48g_post
3172    --- EOS:
3173    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
3174      store total Potential in totPhyHyd for diagnostics & EOS.
3175    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
3176    --- Pressure/geopotential gradient:
3177    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
3178    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
3179      ( changes results of global_ocean_pressure )
3180    o NLFS + z-coord.: add eta*Rho' contribution.
3181    o accurate phiHyd when using interface-W at the middle between 2 centers
3182     ( changes results of ideal_2D_oce )
3183    o includes r* 2nd term in potential gradient.
3184    
3185    checkpoint48f_post
3186    Merging from release1_p12:
3187    o Modifications for using pkg/exf with pkg/seaice
3188      - improved description of the various forcing configurations
3189      - added basic radiation bulk formulae to pkg/exf
3190      - units/sign fix for evap computation in exf_getffields.F
3191      - updated verification/global_with_exf/results/output.txt
3192    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
3193      (SBO) core products, including oceanic mass, center-of-mass,
3194      angular, and bottom pressure (see pkg/sbo/README.sbo).
3195    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
3196      to avoid negative values in shallow regions.
3197      - updated verification/natl_box/results/output.txt
3198      - updated verification/lab_sea/results/output.txt
3199    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
3200    o Added useSingleCpuIO option (see PARAMS.h).
3201    o Updated useSingleCpuIO option in mdsio_writefield.F to
3202      work with multi-field files, e.g., for single-file pickup.
3203    o pkg/seaice:
3204      - bug fix in growth.F: QNET for no shortwave case
3205      - added HeffFile for specifying initial sea-ice thickness
3206      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
3207    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
3208      kpp_transport_t.F, forward_step.F, and the_main_loop.F
3209    o pkg/seaice:
3210      - adjoint-friendly modifications
3211      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
3212    
3213    checkpoint48e_post
3214    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
3215    o dynamics: change definition of computational domain & adapt mom_fluxform
3216      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
3217    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
3218        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
3219        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
3220        global_ocean.90x40x15 global_with_exf global_ocean_pressure
3221        inverted_barometer solid-body.cs-32x32x1
3222      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
3223    
3224    checkpoint48d_post
3225    o in preparation for r*:
3226     a) use pre-computed gradient of hydrostatic potential:
3227        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
3228     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
3229        => affects results of glob_oce_pressure (different truncation error)  
3230      update output.txt of ideal_2D_oce & global_ocean_pressure
3231    
3232    checkpoint48d_pre
3233    o in preparation for r*:
3234      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
3235      pass the 2 comp. of the grad. as arguments to momentum S/R.
3236      but for the moment, only used if it does not change the results.
3237    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
3238    
3239    checkpoint48c_post
3240    Modifications in treatment of initial flux forcing controls
3241    to avoid extra storing of flux fields.
3242    
3243    checkpoint48c_pre
3244    o Added tidal_basin_2d experiment (currently 1D!)
3245    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3246    
3247    checkpoint48b_post
3248    o r* coordinate added in #ifdef NONLIN_FRSURF block.
3249     (modification to pressure gradient not yet implemented)
3250    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
3251      (for U & V) that are used for vertical advection of momentum.
3252    
3253    checkpoint48a_post
3254    o In preparation for r*, use temp. array to compute vertical transport
3255       in flux-form momentum pkg. => change results of few test-exp.
3256      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
3257                        lab_sea, natl_box & plume_on_slope
3258    
3259    checkpoint48
3260    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
3261    
3262    checkpoint47j_post
3263    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
3264    o moved adexch from forward_step to addummy_in_stepping
3265    o added exch in ctrl_map_...
3266    o aveFreq.=0. at end of cost_final to avoid overwrite in
3267      reverse checkpointing loop
3268    o Yet more changes in gmredi:
3269      * adgmredi_calc_tensor
3270        avoiding all recomputation of gmredi_slope_limit
3271      * adgmredi_x/y/rtransport
3272        added flag for excessive storing to avoid recomp. of
3273        u/v/rtans, dTdx/y/z
3274        -> this is not really necessary and very memory-consuming
3275      * adgmredi_slope_psi:
3276        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
3277      * gmredi_slope_limit
3278        re-activated full calculation of taperfct for case 'ac02'
3279    o updating verification/ adjoints of carbon, global_ocean.90x40x15
3280    
3281    checkpoint47i_post
3282    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
3283    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
3284      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
3285    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
3286    o gmredi: fix few bugs.
3287    
3288    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
3289    This will be a good checkpoint to plug into the ecco-branch.
3290    o few modif.'s to get latest version adjointed
3291      (mainly kick out code in ini_linear_phisurf)
3292    o modif's to run adjoint with exactConserv
3293    o case GM_BOLUS_ADVEC should be cleaned
3294      S/R gmredi_slope_psi should be cleaned
3295    o verification/carbon now has exactConserv=.TRUE.
3296    
3297    checkpoint47g_post
3298    o time-average AIM output: becomes independent from statvars time-average
3299      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
3300    o After TAF bug fix:
3301      Tested adjoint of gmredi package.
3302      Tests were done with checkpoint47 rather than with latest
3303      checkpoint47f_post since the latter is broken for the adjoint
3304      verification/carbon/ contains both ADM and TLM gradient checks.
3305    Here they are, before they get changed/lost/stolen.
3306    Mostly modif.'s to fix numerical sensitivities.
3307    Gradient checks OK for
3308    - GM_taper_scheme:
3309      * clipping
3310      * ac02
3311      * linear
3312      * glw91
3313      * dm95
3314      * ldd97
3315    - GMREDI_OPTIONS:
3316      * GM_VISBECK_VARIABLE_K
3317      * GM_NON_UNITY_DIAGONAL
3318      * GM_EXTRA_DIAGONAL
3319      * GM_BOLUS_ADVEC
3320    in conjunction with data.gmredi parameters to be checked in
3321    in a few minutes under verification/carbon/code/
3322    
3323    checkpoint47f_post
3324    Merging from release1_p10:
3325    o modifications for using pkg/exf with pkg/seaice
3326      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
3327        and SEAICE_EXTERNAL_FLUXES
3328      - pkg/exf CPP options EXF_READ_EVAP and
3329        EXF_NO_BULK_COMPUTATIONS
3330      - usage examples are Experiments 8 and 9 in
3331        verification/lab_sea/README
3332      - verification/lab_sea default experiment now uses
3333        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
3334    
3335    checkpoint47e_post
3336    o created a tag prior to creating a branch
3337    
3338    checkpoint47d_post
3339    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
3340      at the bottom boundary had an erroneous half slip boundary condition
3341    o added bottom drag and no slip boundary condition capabilities to
3342      oceanic pressure coordinates code
3343    o added new verification experiment global_ocean_pressure, this experiment is
3344      also described in the tutorial section of the manual
3345    checkpoint47d_pre
3346    
3347    checkpoint47c_post
3348    o Added a verification experiment for a global cubed-sphere ocean run
3349      -  verification/global_ocean.cubed32x32x30
3350      -  uses pkg/therm_seaice and pkg/bulk_forcing
3351    
3352    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
3353    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
3354      when using P-coordinate; only implemented for atmospheric config.
3355    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
3356      NOTES: requires option NONLIN_FRSURF to be "#define".
3357    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3358    
3359    checkpoint47b_post
3360    Merging from release1_p9:
3361    o pkg/seaice
3362      - removed GOTO's and added taf directives
3363      - double precision constants to reduce the g77 (Linux)
3364        to F77 (SGI) differences reported in release1_p8
3365    o tools/genmake
3366      - added SGI options
3367    o verification/testscript
3368      - updated to that of checkpoint47a_post
3369    o verification/global_ocean.90x40x15/input/eedata
3370      - modified for SGI f77 compatibility
3371    o verification/lab_sea
3372      - added description of sea-ice model
3373      - added missing matlab routines
3374      - added test of thermodynamics parallelization
3375    
3376    checkpoint47a_post
3377    o new pkg: aim_v23
3378     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3379       for now, keep the same surface forcing as before.
3380     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3381     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3382     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3383    o add diagnostic of surface correction term in monitor output
3384    
3385    o bulk_force and therm_seaice
3386    - Two packages:  bulk_force (Bulk forcing)
3387      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3388    - Earlier integration from Stephaine Dutkiewicz
3389      and Patrick Heimbach.
3390    - Two ifdef statements for compile time,
3391       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3392    
3393    checkpoint47
3394    differentiable version of checkpoint46n_post
3395    o bug fix in quasihydrostaticterms
3396    o * "clean" adjoint code (in terms of extensive recomputations)
3397        can now be obtained for all GMREDI options (i.e. for
3398        - GM_VISBECK_VARIABLE_K
3399        - GM_NON_UNITY_DIAGONAL
3400        - GM_EXTRA_DIAGONAL
3401        - GM_BOLUS_ADVEC )
3402      * However, wrong gradient check problem remains unsolved.
3403      * New CPP options have been introduced for different
3404        tapering schemes
3405    o external_fields_load now part of differentiation list
3406    o pressure needs multiple storing;
3407      would be nice to have store_pressure at beginning or
3408      end of forward_step, e.g. by having phiHyd global (5-dim.)
3409      (NB: pressure is needed for certain cases in find_rho,
3410      which is also invoked through convective_adjustment).
3411    o recomputations in find_rho for cases
3412     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3413    o #define ATMOSPHERIC_LOADING should be differentiable
3414    o ini_forcing shifted to begining of initialise_varia
3415    o Incorporating QNVS line search routines into MITgcm
3416      (this is separate code, and therefore not under pkg)
3417      lsopt/, optim/
3418    o Updated verification/carbon/
3419      - #define GM_VISBECK_VARIABLE_K
3420      - GM_taper_scheme    = 'ldd97'    
3421    
3422    checkpoint46n_post
3423    Merging from release1_p8:
3424    o verification/natl_box:
3425      updating new external_fields_load routine
3426    o New package: pkg/seaice
3427      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3428      The sea-ice code is based on Hibler (1979-1980).
3429      Two sea-ice dynamic solvers, ADI and LSR, are included.
3430      In addition to computing prognostic sea-ice variables and diagnosing
3431      the forcing/external data fields that drive the ocean model,
3432      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3433      The implied surface heat flux is then stored in variable
3434      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3435      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3436      non-local transport term.  Because this call precedes model
3437      thermodynamics, temperature under sea-ice may not be "exactly" at
3438      the freezing point by the time theta is dumped or time-averaged.
3439      N.B.: fairly large differences in accuracy occur across
3440            different platforms/compilers; comparison between
3441            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3442            generated output gives:
3443       T           S           U           V
3444      C D M    c        m  s        m  s        m  s        m  s
3445      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3446      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3447      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3448    
3449      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3450    o GAD:
3451      - generated new common blocks to account for call of
3452        same gad routines with differing traceridentities
3453        (needed to modify tracerIdentity indices in GAD.h)
3454      - generated separate common blocks for case useCubedSphereExchange
3455        (Department of Futurology)
3456      - parameter lists to gmredi_?transport: added tracerIdentity
3457      - added new key indices to tamc.h
3458    o external_fields_load:
3459      - added this routine to TAF list
3460      - needed to make some common blocks global and additional storing
3461        along the same lines as exf package (checkpoint_lev?_directives.h)
3462    o exf:
3463      updated external forcing package
3464      - bug fixes carried over from ecco-branch
3465        (missing OBCS_OPTIONS.h in two routines)
3466      - enable easy to use "no forcing".
3467      - added exf I/O for atmospheric loading
3468      - added exf I/O for runoff data
3469      - transfered scaling between exf <-> MITgcm to exf namelist
3470    o Adding new verification experiment global_with_exf.
3471      This verification experiment is almost identical to the
3472      global_ocean.90x40x15 experiment, except that it uses
3473      the exf (and cal) package instead of the
3474      external_fields_load routine (cf README file).
3475    
3476    checkpoint46m_post
3477    o modified testscript to return -- when there are no lines of "%MON" output
3478    o added new flag "quasiHydrostatic" for QH mode
3479      and new routine quasihydrostaticterms()
3480    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3481      New routine: mom_u_coriolis_nh()
3482    o fixed sign of non-hydrostatic metric terms in u and v equations.
3483      Depend on correct sign of gravitySign.
3484    o added work.pc* to .cvsignore in aim directories using ifc
3485    o introduced flag for controllin non-hydrostatic metric terms
3486    o removed gravitySign from PARM04
3487    o switched to g77/ifc from pgf77 in aim experiments
3488    
3489    checkpoint46l_post
3490    o made convective adjustment work with pressure coordinates:
3491     - changed the direction of k-loop in convective_adjustment.F for the
3492       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3493     - adjusted the reference pressure k-index in convective_adjustment.F
3494     - adjusted the convection condition in convect.F (in analogy to
3495       calc_ivdc.F)
3496     - convective_adjustment no longer computes anything on the halos
3497     - removed the warnings about negative salinity from find_rho.F and
3498       find_alpha.F; instead the new routine look_for_neg_salinity, called
3499       at the beginning of find_rho, find_alpha, and find_beta, does a
3500       check of the entire slice, if CPP-option
3501       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3502    checkpoint46l_pre
3503    
3504    checkpoint46k_post
3505    o fixed the verification/global_ocean.90x40x15 experiment:
3506     - new bathymetry (the world according to A., JMC, and M.)
3507     - new initial fields and forcing fields (*.bin files)
3508     - new POLY3.COEFFS (for the next release one should switch to a full
3509       equation of state: JMD95P or MDJWF)
3510     - fixed several errors and redundancies in the data file
3511     - experiment uses looped cells
3512     - added matlab directory with diagnostic scripts for plotting of output
3513    
3514    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3515     - read AIM physics parameters from a file (data.aimphys)
3516     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3517    
3518    checkpoint46j_post
3519    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3520    o move wVel computation at the end of the time step, in S/R integr_continuity
3521    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3522    o update timeave pkg for wVel diagnostic.
3523    checkpoint46j_pre
3524    
3525    checkpoint46i_post
3526    o Clean up AIM package (and keep the results unchanged):
3527      include CPP_OPTION and use IMPLICT NONE in all routines ;
3528      declare all the variables _RL ; use _d 0 for all numerical constants.
3529      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3530    
3531    checkpoint46h_post
3532    o cleaned up the use of rhoNil and rhoConst.
3533      - rhoNil should only appear in the LINEAR equation of state, everywhere
3534        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3535        and the dynamical equations are all divided by rhoConst
3536    o introduced new parameter rhoConstFresh, a reference density of fresh
3537      water, to remove the fresh water flux's dependence on rhoNil. The default
3538      value is 999.8 kg/m^3
3539    o cleanup up external_forcing.F and external_forcing_surf.F
3540      - can now be used by both OCEANIC and OCEANICP
3541    checkpoint46h_pre
3542    
3543     Added code to convert surface volume flux (fresh water) into
3544     a mass flux when using P coordinates in the ocean (OCEANICP).
3545     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3546    
3547    checkpoint46g_post
3548    o Include a new diagnostic variable phiHydLow for the ocean model
3549      - in z-coordinates, it is the bottom pressure anomaly
3550      - in p-coordinates, it is the sea surface elevation
3551      - in both cases, these variable have global drift, reflecting the mass
3552        drift in z-coordinates and the volume drift in p-coordinates
3553      - included time averaging for phiHydLow, be aware of the drift!
3554    o depth-dependent computation of Bo_surf for pressure coordinates
3555      in the ocean (buoyancyRelation='OCEANICP')
3556      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3557        Theta, Salinity, and Pressure in the parameter list. This routine is
3558        presently contained in find_rho.F. This routine does not give the
3559        correct density for 'POLY3', which would be a z-dependent reference
3560        density.
3561    o cleaned up find_rho
3562      - removed obsolete 'eqn' from the parameter list.
3563    o added two new verification experiments: gop and goz
3564      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3565    checkpoint46g_pre
3566    
3567    checkpoint46f_post
3568    o Enable tangent linear (forward mode) gradient checks:
3569      - extended active file handling to g_... files
3570      - added TANGENT_SIMULATION to theSimulationMode
3571      - extended grdchk package accordingly
3572    o added tangent linear setup in verification/carbon/code_ftl
3573    o added adjoint setup in verification/front_relax/code_ad
3574    
3575    checkpoint46e_post
3576    o Added new equation of state -> MDJWF
3577      - EOS of McDougall et al., 2002, JAOT, submitted
3578      - caveat: the equation of state is only valid for a smaller (more
3579        realistic?) range of values than JMD95P/Z and UNESCO
3580      - added masks to the calculation of pressure in store_pressure
3581      - added more check values for density in check_eos (ini_eos.F), some of
3582        the old check values are out of the range of the MDJWF-eos, so don't
3583        expect perfect matches for those
3584    checkpoint46e_pre
3585    
3586  checkpoint46d_post  checkpoint46d_post
3587  o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and  o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3588    'OCEANICP', also initialised field pressure correctly in ini_eos in the    'OCEANICP', also initialised field pressure correctly in ini_eos in the
# Line 26  checkpoint46c_pre Line 3606  checkpoint46c_pre
3606    
3607  checkpoint46b_post  checkpoint46b_post
3608  o Added new equation of state -> JMD95Z and JMD95P  o Added new equation of state -> JMD95Z and JMD95P
3609    - EOS of Jackett and McDougall, 1995, JPO    - EOS of Jackett and McDougall, 1995, JAOT
3610    - moved all EOS parameters into EOS.h    - moved all EOS parameters into EOS.h
3611    - new routines ini_eos.F, store_pressure.F    - new routines ini_eos.F, store_pressure.F
3612  o Added UNESCO EOS, but not recommended because it requires  o Added UNESCO EOS, but not recommended because it requires

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