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revision 1.96 by adcroft, Tue Nov 5 19:15:12 2002 UTC revision 1.1001 by gforget, Wed Jun 11 18:56:14 2008 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
8    o pkg/autodiff: more flexibility in zeroadj.
9      model/src: modifying do_oceanic_phys.F accordingly.
10    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
11    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
12      special setup of gmredi for which the adjoint is stable
13      enough for parameter optimization.
14    o bridging the gap between eddy stress and GM.
15      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
16          along with a change in CPP option (now ALLOW_EDDYPSI).
17      -> when using GM w/ GM_AdvForm:
18          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
19          is applied either in the tracer Eq. or in momentum Eq.
20          depending on data.gmredi (intro. GM_InMomAsStress).
21      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
22      The key modifications are in model/src/taueddy_external_forcing.F
23      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
24    checkpoint59r
25    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
26      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
27      fix option to read coriolis(@ cell-corner) from files with CS-grid.
28    o pkg/mnc: add some attributes to standard 1D-coordinate variables
29    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
30      mass points, when using mnc for output
31      - add runtime parameter (missing_value, missing_value_int) to override
32        default (which is the value of getcon('UNDEF'))
33    o pkg/mnc: prepare mnc for the actual use of missing values with the
34      diagnostics package: small fix in mnc_cw_readwrite.template and more
35      initialisation of never used fields
36      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
37      versions
38    o pkg/thsice/thsice_ini_vars.F added default initial values so that
39      thermodynamics sea ice solver does not blow up when some initial fields
40      are missing.
41    o move from external_forcing_surf.F to ini_forcing.F
42      the p-coord. hack consisting in using pLoad to set phi0surf ;
43      update output of tutorial_global_oce_in_p (affected @ truncation level).
44    o Freshen up a bit hs94.1x64x5, notably:
45      remove rotationPeriod and tRef=5*0. (adjoint only), and add
46      exactConserv=.TRUE.
47    o pkg/generic_advdiff:
48      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
49      applies to files where Temperature & Salinity 2nd Order moments are used.
50    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
51      this uses a dynamically allocated internal state data structure
52      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
53      and requires a fortran 90 compiler
54    
55    checkpoint59q
56    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
57       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
58    o Refresh tutorial_global_oce_biogeo, notably:
59      - change bathymetry (put back seamounts in ACC, use hFacs)
60      - change EOS (POLY3 --> JMD95Z)
61      - use Bryan-Lewis vertical diffusivity
62      - use multidimensional advection
63      - remove old virtual virtual in dic pkg, now done through ptracer pkg
64      - change a couple of parameters in dic pkg
65    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
66    o pkg/obcs: change default to OBCSfixTopo = .true.,
67      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
68      - replace "debugMode" with "debugLevel .GE. debLevB"
69    o implementation of TAF directives for gchem,cfc,dic
70    o remove "exp5" (replaced by tutorial_deep_convection).
71    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
72      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
73      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
74      --> changes results in exp4, seaice_obcs
75    o tutorial_deep_convection :
76      update the set-up and increase resolution and domain size ; start
77      from pseudo initial conditions = output at t=120mn in order to see
78      something happening when running testreport.
79    o pkg/seaice: add os7mp as an advection scheme
80                  add check for advection schemes
81                  add a flag for restoring T and S underneath sea ice
82    o pkg/my82: add netcdf-support and diagnostics
83    o thsice pkg:
84      - Now hsMax limits snow height by turning it into ice following
85        flooding scheme (and now conserving energy)
86      - Slight rewriting of the formula in thsice_calc_thick.F
87      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
88      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
89    
90    checkpoint59p
91    o gchem / dic / cfc :
92      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
93      - add new parameter files: "data.dic" & "data.cfc" ;
94      - various re-arrangement in initialisation & header file ;
95      - fix tutorial_global_oce_biogeo for multi-threaded test.
96    o pkg/dic: test for "pickup_dic" file when restarting ;
97      if no pickup-file, can restart with a re-initialised pH (same as it did
98      before) providing pickupStrictlyMatch is set to False.
99    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
100      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
101    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
102      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
103    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
104     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
105       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
106    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
107       scheme to use for vorticty-term ;
108     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
109       (with default selectVortScheme, return to original discretisation)
110     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
111    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
112    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
113      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
114      also fix diagnostics VISCAHW & VISCA4W.
115    
116    checkpoint59o
117    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
118    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
119      move a few statemens out the main loop into separate loops
120    o pkg/shelfice:
121      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
122        (kg/m^2/s), does not break tests, because in verification/isomip,
123        rhoConstFresh=rhoConst (by accident)
124      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
125      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
126        new file model/src/seawater.F, so that they are available for all pkgs.
127      - convert potential temperature into in-situ temperature. This changes the
128        isomip tests => update tests
129    o add a flag writePickupAtEnd (default=true) to be able to suppress
130      writing a pickup at the last timestep
131    o tools/mpack-1.6 :
132      - disable automake (not working) and autoconf (not needed).
133      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
134        also cleaner with much less compilation warnings.
135    o pkg/profiles:
136      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
137      (for "less than 32 characters name" compiler requirement)
138    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
139      conditions that have a different sampling frequency than S/T/U/V obcs
140    o pkg/diagnostics (stats-diags):
141      - fix global Min/Max in case 1 processor get only empty tiles
142    o genmake2: replace (4 times)
143         make genmake_tc_1.o >> genmake_warnings 2>&1
144      with
145         COMM="$CC $CFLAGS -c genmake_tc_1.c"
146         echo $COMM >> genmake_warnings
147         $COMM >> genmake_warnings 2>&1
148      to make genmake2 always see the value of CC as specified in the optfile.
149    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
150      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
151      - modify verification advect_cs test to test SOM-advection on CS-grid.
152    o pkg/ctrl:
153      - Rewrite of ctrl_map_ini_ecco.F,
154        introducing a generic routine (ctrl_map_ini_gen.F).
155      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
156    
157    checkpoint59n
158    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
159      number in dedicate array "hdiag":
160      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
161        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
162      - many small changes (integer format) for large number of diagnostics
163      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
164        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
165    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
166      usingSphericalGrid, this allows to define the rotated grid coordinates
167      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
168      geographical coordinates according to the inverse of the rotation defined
169      by the Euler angles, so that Coriolis parameter and online-interpolation by
170      exf works with the geographical coordinates on XC/YC/XG/YG.
171      Naturally, this feature does not work with all packages, so some
172      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
173      profiles), because there the coordinates are assumed to be regular
174      spherical grid coordinates.
175    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
176      - introduce isopycnal diffusion coefficient control.
177    o tools/adjoint_options:
178      - additional control vector components.
179    o pkg/mnc: have mnc create marginally meaning full coordinate variables
180      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
181    o pkg/mypackage:
182      - add example of read/write pickup for state-var ;
183      - add entry points to the main code for state-vars diags & write-pickup.
184    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
185      transitions for useExfYearlyFields
186      - add new subroutine that determines the file to read from for
187        use*YearlyFields = .TRUE. and .FALSE.
188      - add a verification experiment to global_with_exf that tests
189        useExfYearlyFields with USE_EXF_INTERPOLATION defined
190    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
191      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
192      subroutines (which could be generated from a template, because they are
193      almost identical), for now they are included in obcs_prescribe_read.F for
194      simplicity
195    o pkg/exf:
196      - add a little more diagnostic to exf_interp_read (in analogy to
197        mds_read_field, can be turned off with debugLevel < debugLevA=1)
198      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
199        ugly but fast by unrolling short inner loops, inserting a unroll=8
200        directive in routine lagran, and splitting a loop and making do while the
201        outermost loop (the latter requires the intoduction of index arrays)
202    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
203    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
204      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
205    o verification/seaice_obcs: updated for restart test and latest options
206    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
207      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
208      for now this is only available for the C-grid code and also within
209      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
210    
211    checkpoint59m
212    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
213      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
214    o gad_som : fix flux output (& diagnostics) to have same units as other  
215      advection scheme fluxes (was previously multiplied by deltaT).  
216    o added verification/seaice_obcs both to test seaice open boundaries
217      and to provide an example matlab scrpt for generating them
218    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
219    o pkg/salt_plume: clean up salt_plume_frac.F to
220      remove redundancy in PlumeMethod 1 and 4
221    o pkg/kpp: added saltplume diagnostics
222    o pkg/obcs and pkg/seaice:
223      - do not set uice and vice to zero when OB*icefile are unspecified
224      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
225      - moved seaice tracer obcs after call to seaice_growth
226    o pkg/salt_plume: added various options for salt plume depth
227      criterion and for vertical distribution of the salt
228    
229    checkpoint59l
230    o pkg/ptracers: new version of ptracers pickup:
231      read meta file and write only fields which are needed to restart.
232      ( same logic as main pickup file ; also using pickupStrictlyMatch )
233    o pkg/seaice:
234      - add timescale for melting due to warm mixed layer as a means of
235        setting SEAICE_availHeatFrac more conveniently
236      - add a CPP-flag/runtime parameter check for flooding algorithm
237      - reformulated availHeat in seaice_growth.F to be independent of AREA
238    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
239      unit changes
240    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
241    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
242      SX vector computer.
243    o pkg/seaice:
244      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
245        seaice forcing fields can now be read only through pkg/exf
246      - removed some unused halos
247    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
248    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
249      or U/VICE from U/VWIND before computing U/VSTRESS
250    
251    checkpoint59k
252    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
253      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
254    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
255      all experiments pass when compile with un-initialised var. checking option.
256    o added pkg/salt_plume
257    o script to test restart (for now, in MITgcm_contrib/jmc_script)
258    o pkg/seaice: new read/write pickup version.
259      read meta file and write only fields which are needed to restart.
260      ( same logic as main pickup file ; also using pickupStrictlyMatch )
261    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
262    o lab_sea.hb87: modify the domain & update output.hb87.txt :
263      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
264      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
265      process. Fixed here by closing the domain at the Northern boundary.
266    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
267    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
268      a set of consecutive levels in/from a 3-D array.
269    o pkg/ptracers:
270      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
271      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
272    
273    checkpoint59j
274    o in pkgs: dic, obcs, offline, rbcs:
275      standard way to compute coeff. for time interpolation between 2 time reccords
276      which retains full precision (& make results less dependent on compiler).
277      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
278    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
279      packages instead of reading ice cover and wind speed separately
280    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
281     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
282      to allow to compile customized code before the update)
283    o cleaning-up:
284      - fix CPP instruction syntax in pkg/obcs
285      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
286        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
287      - fix some threads issue in IO parts.
288    o pkg/dic:
289      - add tons of "_d 0" (--> much better testreports !)
290       and then update outputs of tutorial_global_oce_biogeo
291    o pkg/mom_fluxform:
292      add a special version of momentum advection intended to conserve momentum
293      next to a bathymetry step or a coastline edge. (default = off = #undef)
294    o new read/write pickup version:
295      - for now, only implemented for main (mdsio) pickup file.
296      - write out only what is needed to restart; merge pickup_nh , pickup_ph
297        and main pickup together.
298      - read meta file; read only what is needed to restart; stop if a field
299        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
300        if it make sense (even if the restart is not perfect).
301      - if no meta file, assume that pickup to read corresponds exactly to
302        a pickup that would currently be written.
303      - read pickup written in the old format (until checkpoint59i) if it
304        recognizes an old meta file (no field-list).
305      - add a meta file in exp. which starts from a pickup: 2 cases:
306        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
307         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
308        b) a meta file describing the content of the associated pickup file
309         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
310    o pkg/mdsio & pkg/rw:
311      - new routine to read a meta file ; new set of routine to read
312        Multiple-fields file (with meta file).
313    o added open boundary conditions capability for seaice
314        HSNOW, HSALT, UICE, and VICE
315    
316    checkpoint59i
317    o adjoint:
318      * fix multiDimAdvection adjoint
319        (partial recomputation problem by TAF for fVerT(:,:,kDown)
320        and comlev1 size definition (maxpass vs. max. number of tracers)
321      * verification/global_ocean.90x45x15 adjoint now tests
322        NLFS and multiDimAdvection using DST3 (=30)
323      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
324    o pkg/kpp: add "_d 0" to real constant (if missing);
325      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
326      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
327    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
328      for internal parameters related to restart process (formerly from PARAMS.h)
329      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
330    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
331      as argument. (only atm2d & obcs write_pickup have not yet been updated)
332    o pkg/monitor:
333      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
334      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
335      - account for deep Atmosphere factor and density factor (anelastic)
336    o added open boundary conditions capability for seaice HEFF and AREA
337    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
338      thermodynamics
339      - requires a little reorganization, which affects the testreport results
340        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
341        so that now the conservative form is tested
342      - add a few comments
343    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
344    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
345    o add new diagnostics to seaice: advective, diffusive fluxes (only for
346      multidim-advection, for scheme 2 they are not filled) and transports,
347      thermodynamic growth rates
348    o change units of EmPmR (inside the code, + within coupling interface)
349      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
350      Affects results @ truncation level (cg2d match) and update output of
351       experiments: lab_sea(6), global_ocean.90x40x15(10),
352      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
353      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
354      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
355      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
356    
357    checkpoint59h
358    o pkg/exf:
359      - improve vectorization by moving if-statement out of loops in
360        exf_mapfields, exf_radiation
361      - exf_bulkformulae.F: introduce 2D fields and vectorize code
362    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
363    o testreport:
364      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
365        monitor & update offline_exf_seaice exp. output.
366      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
367    o pkg/seaice:
368      - bug fix in the evp solver: boundary conditions were affected be
369        masking of zMax/zMin (changes results)
370      - minor bug fix in boundary conditions in seaice_calc_strainrates
371        (changes results for no_slip)
372      - seaice_lsr.F: make interpolation of eta dependent on boundaries
373      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
374      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
375        stress formulation and no-slip boundary conditions
376    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
377      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
378    o pkg/seaice: a first HSALT time stepping equation has been checked in
379    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
380      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
381      without requiring DO-IF statements
382    o pkg/thsice:
383      use continuous power-law function for partition of energy between lateral
384      melting/freezing and thinning/thickening ; old code using step function
385      still available with #undef THSICE_FRACEN_POWERLAW
386      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
387    o testreport: change AD testing : check against results/output_adm.txt
388      using same scripts as for forward test.
389    
390    checkpoint59g
391    o adjoint testing: in preparation for changing testreport:
392      - output format: cost and grad written on separated lines
393      - ad output results in directory "results" (instead of "results_ad")
394    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
395    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
396    o pkg/ecco: allow user defined cost function contributions
397    o testreport:
398      Allow to choose (per experiment) the list of tested output variables
399       and the main variable (used to issue a pass/FAIL ) ;
400      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
401      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
402      Also modify printing of summary:
403       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
404       b) echo the list of tested variables in the individual summary.txt of
405          each experiment.
406    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
407      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
408      (but still depend on the tile decompostion of the domain).
409    o pkg/seaice: change a discretization detail to make the B-grid code
410      "more symmetric". This change is likely to remove all "ridges/leads" that
411      where quasi-aligned with the grid in B-grid solutions. It may also be
412      the solution to the stress coupling issues with the B-grid.
413    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
414      remove .cvsignore from input dir. (since testreport no longer run here).
415    o pkg/thsice:
416     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
417     - fix reshaping of sea-ice just after advection:
418       melt all the ice only if ice-volume is too small.
419     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
420       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
421     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
422    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
423      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
424    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
425      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
426      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
427      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
428      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
429      -> update output.txt
430    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
431     this affects truncation error: -> update output.txt of exp:
432      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
433      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
434    
435    checkpoint59f
436    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
437    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
438      a bounded range (in forward mode)
439    o pkg/ecco, ctrl, autodiff and mom_common:
440     internal parameter controls, completements of implementations
441    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
442    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
443      (not seem any difference in testing results).
444    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
445       at face corners.
446    o pkg/generic_advdiff:
447     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
448      loop range indices for computing vertical advection tendency
449      and do the calculation in the interior only (no overlap) ;
450      for now, only implemented for SOM advection (to save CPU time).
451     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
452    o exch2 adjoint
453      First set of changes:
454      - add exch2 hand-written adjoint templates
455      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
456        This will require cleanup in pkg/autodiff/*.F
457        (changed routines currently kept separate in verif. code/)
458      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
459        that used to hide exch2 or cubed-sphere specific code
460        (commented via 'cph-exch2')
461    o pkg/seaice
462      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
463    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
464       output of global_ocean.cs32x15.thsice .
465    
466    checkpoint59e
467    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
468      for B-grid vector (not yet tested) and C-grid vector (<- only used
469      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
470    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
471      (#ifdef ALLOW_SALT_PLUME)
472    o gather_2d/scatter_2d: removed halo regions
473    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
474      scheme and the corresponding test case (under front_relax dir). For now,
475      only available with Skew-flux form and not yet tested in realistic set-up.
476      adjoint: store directives updated, but gradient checks deteriorated,
477      so maybe GM/Redi adjoint is now broken.
478    o seaice adjoint
479      * add AREA, HEFF, HSNOW as control variable
480        (should not change lab_sea results)
481      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
482    o pkg/seaice:
483      * added computation of saltFlux in seaice_growth;
484        For time being, sea ice salinity is assumed constant
485        contribution of snow flooding to freshening of sea ice is neglected.
486        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
487        defaults to 0.0 in order to maintain backward compatibility.
488        Typical values for SEAICE_salinity are 4 to 10 g/kg.
489      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
490      * added SEAICE_availHeatFrac, which specifies fraction of surface level
491        heat content used to melt or grow ice
492      * commented out cap of HICE: it helps keep ice thinner
493      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
494      * applied OBCS T/S mask to HEFFM sea ice mask
495    
496    checkpoint59d
497    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
498     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
499     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
500    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
501     and change default value of parameter "GM_Small_Number";
502     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
503       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
504       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
505    o pkg/ecco: cost function when applying pkg/smooth to controls
506    o pkg/ctrl: add forcingPrecond run time parameter
507    o pkg/seaice:
508     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
509     - fix bug in metric terms of u-equation in LSR solver (implicit part),
510       changes verification/lab_sea
511     - rearrange implicit part of u-equation in LSR solver to make it easier to
512       read, understand, and debug. This causes changes at the truncation level.
513     - fix (serious) bug in the boundary conditions (sign error in the implicit
514       part) of the LSR solver. Changes all LSR results.
515     - fixed problem with HSNOW initialization to avoid thick snow when AREA
516       is initilized with small values - does not change lab_sea results.
517     - added HsnowFile initialization capability
518    o pkg/smooth: addition to model/src and pkg/ctrl so allow
519     initialization of pkg/smooth and application to control vector
520    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
521    o dependencies: pkg/profiles requires pkg/cal
522    o pkg/profiles:
523     - added option ALLOW_PROFILES_GENERICGRID
524         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
525         that interpolation information (grid points and coefficients) is provided
526         within the netcdf input files.
527         -> sample matlab scripts can be found in MITgcm_contrib/gael
528         that allow you to prepare netcdf input files.
529     - also modified: cleaner include statements, cleaner error print statements,
530       cleaner stops when error, and more tests of the netcdf input files consistency.
531    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
532    o pkg/seaice:
533     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
534       requires a new routine: seaice_diagnostics_fill.F
535     - make sure that seaice does not move if not forced (pressure replacement
536       method, Hibler and Ip, 1995), changes results
537     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
538     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
539       It is turned off by default (=-1.), because it changes the results.
540     - make it possible to read AREA from a file, too.
541    
542    checkpoint59c
543    o add S/R and diagnostics for oceanic mixed-layer depth
544    o move GMRedi call after all vertical mixing schemes (including KPP)
545    o pkg/thsice:
546     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
547      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
548    o pkg/obcs:
549     - bug fix for balance code
550    o pkg/seaice:
551      - allow values of SEAICE_elasticParm > 1
552      - add new parameter SEAICE_evpTauRelax as an alternative
553        to SEAICE_elasticParm
554      - make lsr boundary conditions free slip (by default), changes result
555      - add code for no slip boundary conditions for lsr
556      - set minimum of zeta to zero (and not 4e8) (changes results)
557      - add a cap on AREA after advecting AREA if seaice_growth is not called
558    o change calculation of Visbeck K:
559      - no longer depend on tapering scheme; instead, compute slope (limited
560        by GM_maxSlope). this is equivalent to what was comuted before with
561        clipping or linear tappering.
562      - fix vertical averaging (wrong by 1/2 level)
563      - leave the old version (but will not be maintained) within
564        #ifdef OLD_VISBECK_CALC / #endif
565      - update output of exp. ideal_2D_oce
566    o change error catch in calc_r_star to improve vectorization
567    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
568      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
569    o adjoint:
570      Re-organized adjoint checkpointing according to Matt Mazloff
571      (but with modifs/completions/cleanups)
572      Storing is now bundled into large arrays to optimized I/O
573      (and second step in cleanup of the_main_loop)
574    
575    checkpoint59b
576    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
577      - export/import (between ocean & coupler) fields needed for ocean DIC.
578    o pkg/seaice:
579      - get rid of three more exchanges seaice_calc_viscosities (required
580        different loop boundaries in seaice_lsr and seaice_ocean_stress)
581      - bug fix in seaice_ocean_stress (update of lab_sea required)
582      - reduce loop boundaries to necessary minimum also in seaice_evp
583      - go back to the old way of computing deltaC/Z as the adjoint likes that
584        better
585    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
586      passive tracer to an Age Tracer) + update output.txt
587    o pkg/exf:
588      - implement A-grid / C-grid selection for wind-stress input files.
589      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
590      for now, in exf_bulk_largeyeager04.F only :
591      - change implementation for case where windspeed + 2. components wind-stress
592        are read-in. AND use rhoConstFresh to convert evap.
593    o pkg/seaice:
594      - use correct EXCH_UV for wind-forcing (on A-grid).
595      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
596        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
597    o pkg/exf:
598      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
599      EXF_INTERPOLATION:
600      - merge global_with_exf/code version of exf_interp_read.F
601        to the main code ;
602      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
603        reading the file ; Important: This options needs to be defined to recover
604        previous code.
605        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
606      - no longer loose real*8 precision along the way when using exf_iprec=64.
607    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
608      - change discretisation of evp-solver in order to avoid another exchange
609        (changes lab_sea) and clean up a little
610      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
611        help the adjoint (this also changes the results slightly)
612      - add a few "_d 0" where they had been missing in seaice_evp.F
613      - cleaning up: remove unused seaice_calc_rhs.F
614    o pkg/exf: some cleaning-up:
615      - change various "constants" into runtime parameters
616      - cleaned-up Large&Yeager04 routine which should eventually
617        replace exf_bulkformulae.F (changed names of S/R and CPP)
618        and merged various ALLOW_ATM_WIND options
619     only used with thsice pkg (in thsice_get_exf.F):
620      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
621        which are used when useStabilityFct_overIce=TRUE (= the default)
622      - change default values of ice & snow emissivity and scale downward LW
623        by ice & snow emissivity.
624    o pkg/thsice:
625     fix few little problems, in thsice_calc_thickn.F:
626      - growth vertically (and not laterally) if iceFrac == iceMaskMax
627      - melt only laterally if hIce < hThinIce (as the comments say)
628      and in thsice_extend.F:
629      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
630      - start to form ice as soon as the minimum ice-volume is reachable.
631     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
632      and cpl_aim+ocn
633    o pkg/kpp
634     - move computation of surface related input fields to KPP into a new
635       subroutine kpp_forcing_surf.F
636     - remove wrong (within bi,bj loops) EXCH calls.
637     - little cleaning (add argument myThid in last position, cvs header ...)
638     - for now, fix conservation problem by exchanging KPPviscAz (may not
639       be the best fix)
640    o pkg/seaice
641     - check for inconsistent evp parameter/cpp-flag combination
642     - remove leftover errIO flat for obsolete name list error handling
643    o OpenAD
644     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
645    
646    checkpoint59a
647    o pkg/seaice: some parameter clarifications and a little bit of clean up
648    o pkg/thsice: rename run-time parameters:
649       himin       -> hIceMin
650       himin0      -> hThinIce
651       hihig       -> hThickIce
652       i0          -> i0swFrac
653       transCoef   -> bMeltCoef
654       frac_energy -> fracMelting
655      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
656       with default values (for now) that do not change the results.
657      remove old version of thsice vars advection in pkg/seaice.
658    o in FFIELDS.h:
659      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
660      - make pLoad & sIceLoad always available (but still only used if
661         ATMOSPHERIC_LOADING is #define).
662    o pkg/kpp: replaced _KPP_RL with _RL
663    o bug fixes for vertical diffusivity computations when both KPP and
664        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
665        are no longer updating the vertical diffusivity array
666        (passed as argument) but are (re-) setting those arrays.
667    o pkg/seaice: fix bug in evp solver, while doing that
668      - change (improve?) discretization of stress computations for both
669        cgrid-lsr and evp solver
670      - add a new routine to compute strain rates
671      - the above changes lab_sea results
672      - add no slip conditions for evp solver (off by default), lsr-version
673        may follow
674      - fix exchange for shear at Z-points (does not change lab_sea)
675      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
676        (to force the user to pick a time step since there is not "safe" way
677        of choosing it)
678      - add principal stress diagnostics
679      - rearrange fields for evp a little to avoid having to call a: too many
680        exchanges and b: exchanges for stress trensor components which we do
681        not have.
682      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
683        of evp, complete rewrite for lsr case (latter is does not yet work
684        in all cases)
685    o pkg/kpp: add code to have mixing in shelf ice caverns
686      - add myThid to all kpp routines (long overdue)
687    
688    checkpoint59
689    o pkg/exf:
690      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
691        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
692      - move exf header files from lower_case.h to UPPER_CASE.h ;
693        add missing cvs Header & Name
694      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
695      - add namelist param. selectStressGridPosition, exf_monFreq
696      - retire many _CLIM routines, and remove data.exf_clim
697        + params moved to data.exf
698        + climsst, climsss now handled by exf_set_gen, i.e.
699          climss?period=0 refers to constant field,
700          climss?period=-12 to monthly forcing
701      - split up namelists in data.exf
702    o pkg/seaice:
703      - remove seaice_exch and seaice_exch_uv
704      - remove superfluous exchange of theta
705      - add myThid to seaice_budget_ocean/ice
706      - add new interface for atmospheric wind forcing (C-grid only)
707        + new routine
708        + two new field (taux, tauy for stress over ice)
709        + removed one global field (DAIRN) for C-grid case only
710    o pkg/thsise
711      - 2nd set of modifs for thsice adjoint in conjunction with exf
712    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
713    
714    checkpoint58y_post
715    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
716      vertical diffusivity, similar to that in MOM4; turned on using
717      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
718      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
719    o Added capability for 3D specification of background vertical diffusion
720      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
721      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
722      "data" file that contains the 3D vertical diffusivity coefficients.
723    o ice dynamics (pkg/seaice) with thsice thermodynamics:
724      - add code within pkg thsice to advect & diffuse sea-ice fields
725      similar to (and will replace) what has been added in  seaice_advdiff.F,
726      but: - conserving Mass, Heat & Salt.
727           - better when using non-linear advection scheme (not yet fully tested)
728           - can also be used in atmospheric set-up (for now, only the diffusion).
729    
730    checkpoint58x_post
731    o IO option for global-file compact format:
732      - add options when generating topology (utils/exch2/matlab-topology-generator)
733      - add I/O capability (pkg/mdsio).
734      - adapt utils/matlab/rdmds.m to read this format.
735      for now long-line format not yet supported by pkg/mdsio (& exch2).
736    o shelfice: add a few diagnostics
737    
738    checkpoint58w_post
739    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
740      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
741      (and replace horiVertRatio in NH code).
742      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
743                         and tutorial_plume_on_slope (sensitive to truncation)
744    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
745      directly to drive seaice model (C-grid only)
746    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
747     - reintroduce computation of wind from stress,
748     - compute tau (in exf_bulkformulae.F) from windstress averaged to
749       mass points to avoid tau = 0
750     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
751    o rdmnc.m: make it work with "global" files created with gluemnc
752    o rdmnc.m : some improvements in dealing with singleton dimension
753      (tested on all testreport mnc output files).
754    o genmake2: disable pkg/profiles if netcdf test fails.
755    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
756    o move call to cal_readparms up to make calendar parameters/variable available
757      to all packages
758    
759    checkpoint58v_post
760    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
761      useDynP_inEos_Zc tested.
762    o pkg/exf: changes to properly interpolate/mask/scale initial fields
763    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
764      and portions thereof.  See read_cs.txt for description and examples.
765    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
766      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
767      following the great-circle arc between those 2 points.
768    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
769      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
770    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
771     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
772     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
773     - still needs work (not working with some options ; efficiency to improve)
774       and serious testing.
775     - use this scheme for temperature & salinity in 2 advection test exp.:
776       advect_xy & advect_xz, respectively.
777    
778    checkpoint58u_post
779    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
780    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
781    o testreport: add option "-skipdir" to skip some test.
782    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
783      momentum calculation.
784    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
785    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
786      remove checkpoint.F and the_correction_step.F (no longer used);
787      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
788    o add option (linFSConserveTr) to correct for tracer source/sink due to
789      Linear Free surface
790    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
791    o pkg/thsice: fix reading mnc-pickups
792    
793    checkpoint58t_post
794    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
795    o pkg/mdsio:
796     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
797       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
798       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
799     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
800     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
801       either MDS_READ_FIELD or MDS_WRITE_FIELD )
802     - new S/R (to replace MDSWRITEMETA), which allows to write more
803       informations (variable names, time ...) to meta files.
804     - modify rdmds.m to give back the meta file content.
805    o pkg/diagnostics: change vertical interpolation to be safer, and more
806       flexible (define p-levels to interpolate to in data.diagnostics);
807      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
808       diagnostic pointer.
809    o pkg/seaice: more cleaning up of seaice_growth, added many comments
810    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
811    o fix multi-category seaice:
812     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
813       SEAICE_MULTICATEGORY
814     - fix short wave heat flux
815    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
816       and allow to use EVP solver. Change forward lab_sea: test both EVP
817       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
818    o Initial check-in of lab_sea adjoint
819      (very similar to natl_box_adjoint/code_seaice)
820      * used C-grid and EVP solver
821      * used KPP, GM/Redi
822      * uses inAdExact=.TRUE.
823      * gradient checks fail for both ADM and TLM
824        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
825        f.d. gradients actually seem more problematic than ADM, TLM gradients;
826        issue is related to forward mismatch between g77 an ifort
827    o pkg/seaice: overhaul of thermodynamics
828     - growth.F and groatb.F are replaced by new routine seaice_growth.F
829     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
830     - move a few global fields out of SEAICE.h into seaice_growth.F and
831       make them 2D (FICE/QNETO/ ...)
832     - remove FO (it is the same as QNETO)
833     - introduce a few local fields to avoid modifying external fields such
834       as atemp, etc.
835    
836    checkpoint58s_post
837    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
838      changed exf_set_gen.F so that
839        genperiod=0 means input file is one time-constant field and
840        genperiod=-12 means input file contains 12 monthly means
841    o CG2D: use pre-computed solver main-diagonal (stored in common block);
842      this affects truncation error ; generate new output file for exp. which
843      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
844        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
845        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
846        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
847        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
848        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
849    o start implementation of deep-atmosphere and anelastic formulation
850    o verification: remove 2nd copy of input files and use script "prepare_run"
851      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
852    o mom_common/vecinv/fluxform: fix a few initialisation isssues
853    o profiles: fix for multithreaded case
854    
855    o diagnostics: rename few diags:
856      s/'PRESSURE'/'RCENTER '/g
857      s/'TICE    '/'oceFreez'/g
858      s/'TAUX    '/'oceTAUX '/g
859      s/'TAUY    '/'oceTAUY '/g
860      s/'SWFLUX  '/'oceQsw  '/g
861      s/DIFx/DFxE/g
862      s/DIFy/DFyE/g
863      and add few ocean-forcing diagnostics:
864      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
865    o modifications to pkg/seaice/growth.F and budget.F, which change results of
866      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
867      as actual snow thickness.  It now refers everywhere to effective snow
868      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
869    
870    checkpoint58r_post
871    o modifications to pkg/seaice/growth.F, which change results of
872      lab_sea experiment: fixes pertain to melting snow over open water, to
873      masking EVAP under sea ice, and to using the correct AREA variable for
874      computations of EVAP, PRECIP, HSNOW, and GHEFF
875    o add ability to read bathy, salt, and theta using MNC (off by def)
876    o add flooding algorithm and advection of HSNOW for pkg/seaice;
877      both are turned off by default and do no change any results
878    o seaice advection with pkg/thsice: a step toward the use of non-linear
879      advection scheme, but #ifdef or commented out for now (requires more EXCH).
880    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
881      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
882      in natl_box (affects results @ truncation level: update output.txt)
883    o multi-threading and IO:
884      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
885      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
886        (needed to work with SingleCpuIO): tested in all verif. exp.
887    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
888      affects the results (but none of the verification test uses this scheme).
889    o Adding some pkg/diagnostics capability to pkg/seaice
890      (will certainly be subject to changes)
891    o ctrl: adding new control variables:
892      lwflux, lwdown, evap, snowprecip, apressure, runoff
893    
894    checkpoint58q_post
895    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
896      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
897      high_res_cube configuration by 4% on Columbia.
898    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
899      add (in global_with_exf/code) a version of EXF_INTERP_READ without
900      dynamical allocation (seems to work in multi-threaded).
901    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
902      single CPU io) so that TAF does not have to see EESUPPORT.h
903    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
904    
905    checkpoint58p_post
906    o obcs: stop if obcs is used with useCDscheme = .true.
907    o shelfice:
908     - fix a sign error so that no slip at shelfice interface works
909     - remove stop for combination non-hydrostatic code and shelfice. That does
910       not mean, that the results are correct, but at least they are numerically
911       stable
912    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
913    o added adjoint exch routined for all exch*3d* routines
914      and updated flow directives
915    
916    checkpoint58o_post
917    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
918      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
919    o change controling S/R for writing pickup file (new S/R do_write_pickup)
920      and clean-up reading/writing of pickup files.
921    o fix local version of read/write pickup (NH part) in rotating_tank/code
922    o simplify EXCH interface:
923     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
924     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
925    o added the regrid package
926    o shelfice:
927     - add a simple boundary layer scheme to reduce noise
928     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
929    
930    checkpoint58n_post
931    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
932       local variable (not in common block).
933    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
934      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
935      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
936        to work with SingleCpuIO.
937    o add "_d 0" to real constant of pkg/cfc subroutines ;
938       update exp. cfc_exemple & tutorial_cfc_offline output files.
939    o multi-threading and IO:
940      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
941        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
942      - barrier before and after reading.
943      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
944      - avoid using MDS_WRITELOCAL for LAND pkg output.
945      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
946        common-block variables ; Allows multi-threading with master-thread IO.
947    o change default MAX_NO_THREADS from 32 to 4 ;
948      and stop cleanly when MAX_NO_THREADS is too small.
949    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
950    
951    checkpoint58m_post
952    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
953       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
954    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
955       keep global_ocean.90x40x15 (for AD testing) with former secondary test
956       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
957    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
958        add MITgcm_tutorials (= code + all the tutorials)
959    o ecco, option to compute cost for total ssh (mean+anom)
960    o consistent with addition of ptracer and ssh in pkg/profiles
961    o profiles: adding ptracer and ssh
962    o testreport: change multi-test output-file name
963      (from output.txt.{name} to output.{name}.txt)
964    o profiles: now ok for mutli-tiles case
965    o seaice: add 4 parameters for different advection schemes for area,
966      (effective) seaice thickness, enthalphy, and snow height. Their default
967      is the standard parameter SEAICEadvScheme
968    o calc_gw:
969     - add cosFacU in zonal viscous flux (harmonic.visc.).
970     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
971       of tutorial_plume_on_slope.
972    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
973    o calc_gw: true flux-form, account for horizontal grid spacing.
974      update rotating_tank results, but not plume_on_slope (affected at
975      truncation level, 11 digits).
976    
977    checkpoint58l_post
978    o calc_gw:
979     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
980     - remove side-drag for now (need to fix it); update plume_on_slope results.
981     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
982    o commit code to make SST/SSS weights spatially variable
983      (based on either variable in-situ or variable initial T/S weights)
984    o pkg/ecco:
985      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
986        now based on horizontally varying weights wthetaLev, wsaltLev
987      * cost_averagesflags now returns year indices in addition to day, month
988      * sflux balance is performed on annual basis
989        (sflxumm, sfluxmm2, bal_sfluxmm)
990      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
991        including separate counting and multipliers
992    o pkg/rbcs
993      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
994    
995    checkpoint58k_post
996    o testreport:
997     - always build in dir. "build" (if not there, mkdir build instead of building
998       & running in input)
999     - run in dir run (if it exists), in build otherwise.
1000     - call prepare_run (if input/prepare_run exists)
1001     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1002    o pkg/exf modifications to interpolation and rotation routines for more
1003       reasonable treatment of North Pole singularity: for tracers North Pole
1004       value is set to northernmost zonal-mean value, for zonal velocity it is
1005       set to zero, and for meridional velocity it is set to northernmost value.
1006    o pkg/exf/exf_check_range.F
1007     - add tile index to diagnostics and move stop statement to the very
1008       end of the routine.
1009    o pkg/diagnostics: (diagnostics_main_init.F)
1010      define title of isomorphic variables according to the current config.
1011    o pkg/thsice with pkg/seaice dynamics:
1012    - fix domain of computation (interior only, required for exf) and do exchanges
1013    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1014    o towards a standard way of dealing with multi-threading in MONITOR
1015      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1016    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1017       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1018    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1019    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1020    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1021       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1022    o tracer advection:
1023     - clean-up and simplify calc_common_factors.F
1024     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1025       advection subroutine (but still not used within DST advection S/R)
1026    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1027    
1028    checkpoint58j_post
1029    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1030      from file (collects calls previously in FORWARD_STEP)
1031    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1032    o adjoint store dir. adjusted accordingly
1033    o genmake2
1034      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1035    
1036    checkpoint58i_post
1037    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1038      on wind stress (SEAICEstressFactor defaults to 1.)
1039    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1040      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1041    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1042      on CS-grid: no longer loosing mass.
1043    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1044    o pkg/ggl90: fix sloppy output and fix a bug
1045    o pkg/seaice: added SEAICEuseEVPpickup parameter
1046      - Set to false in order to start EVP solver with
1047        non-EVP pickup files when using SEAICEuseEVP
1048      - fix sign error in diffusion in seaice_calc_rhs
1049    
1050    checkpoint58h_post
1051    * Modifications for bottom topography control
1052      o replace hFacC by _hFacC at various places
1053      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1054      o add non-self-adjoint cg2d_nsa
1055      o update autodiff support routines
1056      o re-initialise hfac after ctrl_depth_ini
1057      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1058    * Adding verification for 5x5 box (4-layer) bottom topography control
1059    
1060    checkpoint58g_post
1061    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1062       used for mean seasonal cycle, mean diurnal cycle); add an example
1063       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1064    o pkg/ggl90:
1065      - add parameter (minimum surface kinetic energy)
1066      - fix bug (avoiding division by zero)
1067    o couple pkg/thsice to pkg/seaice:
1068      - modify advection in seaice to accomodate new scalar fields to be advected
1069      - only muliDimAdection scheme work with seaice/thsice
1070      - mapping of thsice-variables to seaice-variables, back and forth
1071      - does not break the verification experiments, but does not give the
1072        desired results either
1073    o pkg/seaice
1074      - make (default) second order advection a bit less confusing?
1075    
1076    checkpoint58f_post
1077    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1078      to pkg/seaice):
1079      - new routines thsice_map_exf and thsice_get_exf provide the interface
1080      - add an additional formal parameter to thsice_solve4temp
1081    o pkg/exf:
1082      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1083      - correct Stefan-Boltzmann constant
1084      - new parameter for longwave surface emittance
1085      - separate some stuff from exf_bulkformulae into new routines  
1086        exf_radiation, exf_wind
1087      - add new parameters and constants: longwave emissivity for ocean, ice
1088        and snow, evaporation parameters over ice
1089      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1090        either wind from stress or stress from wind
1091    o pkg/thSIce:
1092    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1093    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1094       and THSICE_CALC_THICKN
1095    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1096    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1097      to make debugging easier.
1098    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1099    o pkg/bulk_force:
1100      - clean-up comments and parameters ;
1101      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1102    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1103      generate new output for test-experiment: aim.5l_cs.thSI
1104    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1105      testreport accordingly
1106    
1107    checkpoint58e_post
1108    o SEAICE_CGRID adjoint done
1109    o R_STAR adjoint implemented.
1110      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1111      * need to sort out init. of h0facc, etc.
1112    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1113      to be able to use it in pure forward.
1114    
1115    checkpoint58d_post
1116    o upgrade simple test-experiment to tutorial example:
1117     step.1: duplicate the experiment and (step.2) will remove the old copy.
1118      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1119      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1120      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1121      tutorial_global_oce_biogeo    <- copy of dic_example
1122      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1123      tutorial_plume_on_slope       <- copy of plume_on_slope
1124      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1125      tutorial_global_oce_optim     <- empty for now (David ?)
1126      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1127     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1128    o correct a sign problem in cost_scat.F
1129    o obcs and ptracers: fix boundary conditions for advections schemes
1130      with larger stencil
1131    o thsice adjoint: start
1132    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1133      completeness
1134    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1135      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1136    o ptracers adjoint:
1137      * avoid extensive recomputatations
1138      * fix missing re-init. of gptr (missed by TAF)
1139    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1140      me to turn off the excessive output to STDOUT that this package produces
1141    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1142      and add those terms in Vector-Invariant formulation.
1143    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1144      if the control period (xx_hfluxperiod etc) is 0
1145    o in profiles pkg, clean routines and fix details
1146    o in ecco pkg, reading ssh data:
1147      fix problem in case the model does not start at iter0=0
1148    o fix mnc-pickup/restart for ptracers
1149    o new package prifiles:
1150      code to compute profile-based cost by Gael Forget
1151      (modifs in ecco, ctrl, autodiff)
1152    o Benign bug fix in initialization (spotted by M. Mazloff) of
1153      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1154    
1155    checkpoint58c_post
1156    o adjoint: finish NLFS adjoint and provide reference output in
1157      verification/global_ocean.90x40x15/results_ad_nlfs
1158    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1159      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1160      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1161      with SEAICE_CGRID defined.
1162    o move calendarDumps from "data" to "data.cal" and clean-up the code
1163      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1164    o add useEXF & useCAL flags (for now, set in hard-coded way)
1165    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1166      (were missing in NH mode, and wrong in quasihydrostatic mode).
1167      waiting for Chris updated version of calc_gw to add those CALLs.
1168    o fix bug in quasihydrostatic S/R ;
1169      add a test for this option: global_ocean.90x40x15.qshyd
1170    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1171      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1172    o add on/off flag useOffLine for package OFFLINE
1173    o seaice:
1174      - modify advection so that it works also on the C-grid
1175      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1176        problem in multi-tile runs with C-grid
1177      - add flags for clipping ice velocities and/or masking solver forcing
1178      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1179        C-grid solver
1180      - added a few comments to seaice_diffusion.F
1181      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1182        are now exclusive)
1183      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1184        required re-ordering the code a little:
1185       + make DAIRN global variable (defined in SEAICE)
1186       + move computation of the viscosities eta and zeta into a new separate
1187         routine (because I need to recompute them in seaice_ocean_stress.F)
1188    
1189    checkpoint58b_post
1190    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1191      update output.txt of exp. aim.5l_cs.thSI
1192    o various mnc cleanups and improvements:
1193      + shrink lookup tables by factor of ~4
1194      + better error reporting when running out of lookup space
1195      + able to handle longer path/file names (up to 500 chars)
1196    o adjoint:
1197      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1198      - TBD: "hidden" mom_vecinv recomp. in dynamics
1199    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1200     (allow to differentiate between forcing components using new integer flags:
1201      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1202     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1203    o ecco
1204      - enable trend removal from SSH anomaly obs.
1205    o adjoint
1206      - a fix for PmEpR when #undef EXACT_CONSERV
1207      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1208      - try to fix "hidden" recomp. in forward_step for NLFS
1209        (NLFS seems broken sometimes after I checked it in)
1210    o seaice:
1211     - add c-grid version of the dynamic solver:
1212       + three new routines that are the c-grid substitute lsr, dynsolver
1213         and ostres
1214       + put a few fields that were local to dynsolver into global common
1215         blocks, so that I can move the computation of stresses etc into
1216         seaice_lsr (saves coding but may break the adjoint).
1217     - replace more hardwired parameters by runtime parameters
1218     - add ice masks that mask the rhs of the implicit solvers where there
1219       is no ice (commented out in seaice_dynsolver, because i am not sure
1220       if this works properly), eventually this should replace the clipping
1221       of ice velocities in seaice_dynsolver to +/-40cm/s.
1222    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1223      include it only where its needed
1224    o move balancing of fluxes before the call of external_forcing_surf
1225    o seaice:
1226      - correct units of turning angles (now they are really in degrees)
1227      - move computation of GWATX/Y out of main routine into dynsolver
1228      - initialize GWATX/Y in seaice_init
1229    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1230      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1231    o seaice: add runtime flags for turning angles (default to zero)
1232    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1233      and trend from exf forcing and ctrl control adjustments
1234    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1235      (since checkpoint57x_post)
1236    o change the default rotation period to 86164.s = the Earth rotation
1237    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1238      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1239    o seaice advection: add code for choosing between the default (2nd order
1240      central differences) and multiDim advection schemes provided by
1241      pkg/generic_advdiff
1242    o seaice:
1243      - removed all references to SEAICE_GRID.h fields from
1244        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1245        (cubed-sphere configuration will change a little)
1246      - grid computations in seaice_init are obsolete now.
1247      - cleaned up code a little so that is easier to read (hopefully).
1248      - added new (better?) discretizations of default advection and diffusion
1249        (turn on with SEAICEuseFluxForm)
1250      - replace 1 in 3d global fields by kSurface in growth.F
1251      
1252    checkpoint58a_post
1253    o seaice:
1254      - bug fix in advect.F
1255    o shelfice:
1256      - separate shelfice load anomaly from pload (breaks with time
1257        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1258        Its default is 0., but it may be computed more cleverly from (unknown)
1259        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1260        done offline. A good approximation of the pressure load anomaly is
1261        necessary to avoid large initial adjustment processes underneath
1262        deep-reaching shelfice.
1263      - small fix in ISOMIP shelfice_thermodynamics
1264      - add more sophisticated thermodynamics of Hellmer (1989), this is
1265        now the default
1266      - give a few constants more intuitive names
1267    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1268      if bulk formulae are used in long integration (especially EmPmR). Turn
1269      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1270      if balancePrintMean, the imbalance that is substracted is printed to
1271      STDOUT.
1272    o fix bug (typo) in obcs_apply_eta.F
1273    o add a new package shelfice which enables us to model the circulation
1274      underneath shelf-ice with draughts of hundreds of meters.
1275     - works
1276     - to do: + include improved thermodynamics
1277              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1278                instead of new field kTopC
1279              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1280                instead of new field R_shelfIce and new code in ini_depth.F
1281                and ini_mask_etc.F?
1282              + adjust vertical mixing schemes?
1283    o seaice pkg:
1284     - add a cpp-flag to include a simple formula for a salinity dependent
1285       freezing point of sea water at the surface
1286     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1287       meridional stresses are now different (and hopefully correct)
1288    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1289       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1290       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1291    o pkg/diagnostics: add options and parameters for regional-statistics
1292       diagnostics ; define regions by reading a region-mask from a file
1293       (might add other options later)
1294    o pkg/bulk_force:
1295     - add option and parameters to use AIM surface-flux formulae.
1296     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1297       others forcing fields (defined in PARM05, parameter file "data") are loaded
1298       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1299     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1300     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1301     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1302       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1303     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1304    
1305    checkpoint58
1306    o add "--embed-source" option to genmake2 which, when the supporting
1307      tools can be compiled (as determined by genmake2) will turn on the
1308      embed_files package which then embeds the entire MITgcm source code
1309      (*.[fFhc] + Makefile) used for the build within the executable
1310      - requested by CNH but off by default
1311      - adds a paltry <9MB to the mitgcmuv executable in most cases
1312      - only writes the output when useEMBEDSRC in eedata is true
1313    o clean up 3-dim. relaxation codes:
1314      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1315      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1316      * Thanks to Tom Haine for testing!
1317    
1318    checkpoint57z_post
1319    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1320      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1321    o fix the pickup behavior for obcs in combination with ptracers
1322    o fix a bug in ptracers_external_fields_load
1323    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1324      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1325    o transfered surface NH pressure to eta field (if exactConserv).
1326    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1327         and update lab_sea output.txt file.
1328    o completing 3-dim. relaxation code: additional term
1329         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1330      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1331      * At compile time, in "EXF_OPTIONS.h" set
1332          #define  ALLOW_CLIMTEMP_RELAXATION
1333          #define  ALLOW_CLIMSALT_RELAXATION
1334      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1335          tauThetaClimRelax3Dim = 15552000.0,
1336          tauSaltClimRelax3Dim  = 15552000.0,
1337      * 3 cases:
1338          1) Use a constant-in-time 3-dim. field
1339          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1340          3) Real-time relax. to time-evolving prescribed field
1341    o Adding Laplacian-type smoothness constraint on
1342      initial and boundary (forcing) controls (ic, bc)
1343      * enable at compile-time via
1344        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1345      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1346      * Absolute scale somewhat unclear so far
1347      * no area weighting was included since no other cost term does so far
1348    
1349    checkpoint57y_post
1350    First step for a NLFS adjoint
1351    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1352    o new init. routines for calc_r_star, calc_surf_dr
1353    o still need to deal with ini_masks_etc
1354    o testreport seemed happy
1355    checkpoint57y_pre
1356    
1357    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1358    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1359    o add new offset feature to offline pkg (plus minor cleanup)
1360    o cfc fixes for final year of integration
1361    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1362      be in GCHEM_OPTIONS).
1363    
1364    checkpoint57x_post
1365    o fix testreport Pb in multiple test experiment.
1366    o cleanup our namelist syntax in verification:
1367      - make it more F95 standards compliant (some work still needed)
1368      - allows the vast majority of our tests to work with gfortran
1369    o Non-Hydrostatic:
1370     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1371     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1372    o Allow to apply AB on T,S rather than on AB(gT,gS):
1373     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1374     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1375       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1376     - need a "clever" read_pickup to restart from the other AB formulation
1377    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1378    o remove some unused variables (reduces number of compiler warnings)
1379    o adjoint
1380      * Disable useVariableViscosity for adjoint for time being
1381        (there are a number of extensive recomputations)
1382      * Initialize certain variables needed for adjoint
1383    
1384    checkpoint57w_post
1385    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1386                 fix the singleCpuIO RS version of MDSWRITEFIELD
1387       and add a WARNING if using globalFiles=T with multi-processors.
1388    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1389      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1390    o tracer advection scheme:
1391      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1392       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1393       was not very convenient).
1394      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1395       (further tests needed for the implicit DST & Flux-Limiter schemes).
1396    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1397      and sRef for convenience, handy, when you want to initialize
1398      ptracers in a large domain with a constant non-zero value. Also,
1399      untangle ptracers_init.F a little.
1400    
1401    checkpoint57v_post
1402    o change dome exp. to use variable viscosity in side-drag terms.
1403    o remove all the files from the cfc_offline test since they are now
1404      incorporated into tutorial_cfc_offline which has been producing
1405      identical results for a few days of testing
1406    o add new parameter: sideDragFactor to enable half-slip-side BC
1407      and change side-drag S/R to use viscosity from mom_calc_visc
1408      (can switch back by setting sideDragFactor=0.); affects results at
1409      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1410       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1411    o vorticity & strain are now computed without masking, to account for
1412      no-slip-side BC in variable viscosity calculation ; mask is applied
1413      anyway later on, before computing advection/coriolis terms.
1414    o modify exp4 to test new obcs support for reading from external files
1415      and for passive tracers
1416    o fix behavior of ptracers_monitor when monitor output is written to a
1417      netcdf-file; still not independent of monitor.F (writes in the same
1418      file).
1419    o change default value of tRef (put a uniform, meaningful value for ocean
1420      & atmos) and initialize sRef (was missing, as Martin mentioned).
1421    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1422      to be proportional to enstrophy dissipation length.  Thus,
1423       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1424      This is now consistent with Smagorinsky and with the manual.
1425    
1426    checkpoint57u_post
1427    o OBCS and PTRACERS: add open boundary support for passive tracers
1428      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1429        OB-values from file; this is not different from the way theta and salinity
1430        are treated
1431      - however, Orlanski-radiation conditions are not supported, and the model
1432        will stop if you use pTracers and Orlanski at the same time.
1433      - beefed up the rountine obcs_external_fields_load: now only those open
1434        boundary values are overwritten with values from files for which there
1435        are really files, otherwise the OB-fields remain untouched. This makes
1436        it possible to use different OBs at different ends of the domain (as
1437        with EXF)
1438    o reduce number of exch calls in shap_filt (s2).
1439    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1440      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1441    
1442    checkpoint57t_post
1443    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1444    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1445      same truncation, independent of the face number: affects affects several
1446      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1447    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1448      note that biharmonic viscosity + no-slip was not tested in any experiment.
1449    o fix bug in non-linear free-surf side-drag ; generate new output for
1450      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1451    o make mnc honor the writeBinaryPrec flag for most kinds of output
1452    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1453    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1454      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1455    o add brackets in multi-terms sum to get same truncation, independent of
1456      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1457      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1458    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1459      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1460      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1461      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1462      Suggested values of viscosity parameters found in mom_calc_visc.
1463      Many new viscosity diagnostics available.
1464    
1465    checkpoint57s_post
1466    o Add clearing-house for viscosity calculations, mom_calc_visc and
1467      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1468      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1469      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1470      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1471      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1472      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1473      ViscAhStrain and viscAhTension are now retired.
1474    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1475    o In response to JMC's bug report, genmake2 now ignores any soft-links
1476      that it finds in the *current* directory when searching for files.
1477      Soft-links found in any other source directories will still work as
1478      they did before.
1479    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1480      a C routine to unlimit the stack size
1481    o mnc-ify pkg/aim snapshot vars
1482    o mnc-ify pkg/land as requested by Daniel
1483    o various changes to mnc including:
1484      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1485      - output can now be grouped so that all files within a group
1486          change the ITER portion of their names in lock-step together
1487      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1488          and works with both EXCH1 and EXCH2 (but needs more testing)
1489      - writing works for all verification test cases w/ g77 on Linux
1490    
1491    checkpoint57r_post
1492    o make MNC variable initialization happen earlier
1493    o add diagnostics for (almost) each term of the momentum Eq.
1494    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1495    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1496    o remove MINIMAL_TAVE_OUTPUT option ;
1497      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1498    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1499      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1500    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1501    o add time-dependent SST, SSS control
1502    o cost terms in ecco/ modularized (new cost_generic.F)
1503    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1504    o new infrastructure for seaice model vs. obs misfits in seaice/
1505      * driver from the_main_loop.F is seaice_cost_driver.F
1506      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1507      * gradient check in Exp. 6a of natl_box_adjoint/
1508    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1509      (see README file)
1510    
1511    checkpoint57q_post
1512    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1513    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1514      - bug was reported by Jean-Michel and Ian Fenty
1515    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1516      update exp. cpl_aim+ocn output.
1517    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1518      Needed for high-res. runs with large global files
1519      to be able to limit tapelev size
1520    o Changed some tests for adjoint:
1521      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1522      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1523      * global_ocean.90x40x15/ back to default 3-level checkpointing
1524    o Modifications to enable scripted COMMON to MODULE conversion
1525      * verification/OpenAD/code/ has necessary scripts and description;
1526      * converts, compiles and runs successfully;
1527    
1528    checkpoint57p_post
1529    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1530    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1531      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1532    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1533    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1534      (was already the case for dissipation with mom_vecinv,
1535       and also the case for grad.PhiHyd when staggered-timeStep)
1536      This will allow to put dissipation out-off the AB time-stepping.
1537     Unfortunately, affects truncation error. Update output of exp. that "fails"
1538      (cg2d matching number) and leave the others for later: front_relax(10),
1539      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1540      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1541    
1542    checkpoint57o_post
1543    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1544      (2) its ready to be documented during the 20050801 DocFest
1545    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1546      for ideal_2D_oce and lab_sea on linux_ia32_g77
1547    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1548      in global1x1_tot/code_seaice_adj to access indices 32, 33
1549      (worth another tag)
1550    
1551    checkpoint57n_post
1552    o adding precip control xx_precip 32
1553    o adding swflux control xx_swflux 33
1554    o Replacing 10 forcing penalty cost routines by 1 generic.
1555    o Implementing partitioning in time-mean and variable adjustment
1556      for atmos. state.
1557    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1558    o in natl_box_adjoint:
1559      * updated exp 1 to 10
1560        (but does not have time-mean vs. variable split results yet)
1561    o updated global1x1/*_seaice_adj/
1562      to incorporate latest changes
1563    o enable useSingleCpuIO for mdsio vector routines
1564      (applies in particular to tapelev I/O)
1565    o removed inefficient K-loop in all active_file*control*.F
1566    
1567    checkpoint57m_post
1568    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1569      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1570    o pkg/exch2: filling of face-corner halo regions is optional
1571      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1572    
1573    checkpoint57l_post
1574     tag before updating tutorials (pre-release-2)
1575    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1576       for output and interpolation of input fields onto model grid)
1577    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1578       Affects results of exp. rotating_tank ; update output.txt.
1579    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1580          and taking the square quantity and/or using a fraction-weight field.
1581    o fix aim_diagnostics_init.F mate numbers.
1582    o add mnc output capability to diagnostics/diagstat and update
1583      our cvsignore files for the ACSII output generated
1584    
1585    checkpoint57k_post
1586    o lab_sea now uses diagnostics package and provides a suite of
1587      new EXF diagnostics output.
1588    
1589    checkpoint57j_post
1590    o exf
1591      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1592        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1593        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1594      * extended diagnostics output
1595        - now includes all EXF variables
1596        - hs, hl moved to common block
1597        - separate S/R for diagnostics, called after ctrl vector is added
1598        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1599        - EXFqnet contains true Qnet (i.e. includes qsw)
1600      * updated verif. lab_sea, global_with_exf
1601      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1602        to ensure that diagnostics sees a true EXFqnet
1603    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1604    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1605      several times with different frequencies.
1606    o mnc-ify the thsice package as requested by Daniel Enderton
1607      - the monitor--MNC output needs work
1608      - many attributes need to be added (most are currently blank)
1609    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1610      - many attributes need to be added (most are currently blank)
1611    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1612    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1613    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1614      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1615         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1616    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1617     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1618    
1619    checkpoint57i_post
1620    o Diagnostics package was changed: diagnostic allocation is now deactivated
1621      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1622    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1623      add 1rst Order upwind vertical Shear.
1624    o add a quick fix for A/B checkpointing in OFFLINE mode
1625    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1626      end-run around the C/Fortran linking horror in eesup/src/timers.F
1627    o added pkg/runclock: allows user to terminate run based on wall clock
1628    o added non-hydrostatic scaling parameter: nh_am2
1629    o pkg/my82: futile attempt to make results compiler-independent by adding
1630      some "_d 0", etc. no effect.
1631    o for mnc output, fill the 'T' coordinate var with myTime and create a
1632      separate 'iter' variable for iteration count
1633    o pkg/diagnostics:
1634      add new capability: output of Global/Regional & per-level statistics ;
1635      tested against monitor output (including land & thSIce) on various exp.
1636    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1637    
1638    checkpoint57h_done
1639      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1640      data.diagnostics, data.gchem, data.ptracers) is done.
1641    
1642    o pkg/diagnostics: prepare for Global/Regional statistics.
1643      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1644    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1645      and rename it: DIFFERENT_MULTIPLE
1646    
1647    checkpoint57h_post
1648    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1649    o pkg/diagnostics: change output frequency, now in seconds (instead
1650      of Nb of iterations). This requires to change data.diagnostics.
1651    checkpoint57h_pre
1652    
1653    o in mnc, let the user create the output dir if both mnc_outdir_date
1654      and mnc_outdir_num are false
1655    o add fflags() to pkg/diagnostics which allows one to specify, on a
1656      per-file basis, the file precision [default behavior is unchanged]
1657    o added diagnostics to pkg/kpp, including computation of mixed layer
1658      depth based on a temperature/density criterion
1659    o updated verification/natl_box to test the new pkg/kpp diagnostics
1660    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1661    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1662    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1663      not mnc -- this mistake was found by JMC and is now corrected
1664    
1665    checkpoint57g_post
1666    o add Adams-Bashforth 3rd Order time stepping:
1667      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1668      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1669    checkpoint57g_pre
1670    
1671    o make lambda[Theta,Salt]ClimRelax spatially varying
1672      (default remains spatially uniform constant based on tau)
1673    o added new control variables
1674      * init. uVel, vVel, etanN
1675      * lambda[Theta,Salt]ClimRelax
1676    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1677      (suggested by G. Forget)
1678    
1679    checkpoint57f_post
1680    o add parameter "baseTime" = model base time = time at iteration zero
1681      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1682      account for baseTime shift
1683    o move Coriolis arrays from PARAMS.h to GRID.h
1684    checkpoint57f_pre
1685    
1686    o mnc-ifying the seaice package
1687    o introduced an alternative length scale calculation for use in the limiting
1688      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1689    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1690    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1691      as well as grad(vort3).  Made it compatible with both approximate form
1692      for the cubed sphere and full form of these gradients.  Added flag
1693      useFullLeith to select between approximate and full form.  
1694    o add "d0" in getcon.F to reduce differences between compilers/platforms
1695      update output.txt of exp. fizhi-gridalt-hs
1696    o change port_rand funtion to allow to set the seed.
1697    o fix obscure MNC bug involving conversion between reals and integers
1698      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1699        new version is now more standards-compliant
1700    o adjoint-related modifications
1701      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1702      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1703      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1704    
1705    checkpoint57e_post
1706    o Adding eddy stress controls a la Ferreira et al.
1707    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1708    
1709    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1710      update output.txt of exp. fizhi-gridalt-hs
1711    o add more "Z" dimensions and associated coordinate vars to MNC
1712    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1713    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1714      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1715      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1716      months and years.  Requires pkg/cal.
1717    o diagnostics: add pickup functionality
1718      - off by default for backwards compatibility
1719      - current version only uses MDSIO -- MNC will be added
1720    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1721    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1722    
1723    checkpoint57d_post
1724    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1725    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1726      output from the diagnostics package
1727    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1728    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1729      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1730    o add coordinate variables to the MNC output from the diagnostics package
1731    o change MNC-flags default value: true when useMNC=TRUE
1732    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1733      the ability (off by default) to read the grid information using MNC
1734    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1735    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1736    o do snap-shot diagnostics at the middle of the time-interval (instead of
1737      at the end).
1738    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1739      new test for AIM with thSIce + slab-ocean
1740    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1741    o move state variable diagnostics to the beginning of the time step ;
1742      (note: still needs some work specially for snap-shot diagnostics)
1743      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1744    
1745    checkpoint57c_post
1746    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1747    o generate new output.txt files on faulks with g77 & the new -ieee option
1748    checkpoint57c_pre
1749    
1750    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1751      update output.txt of exp. global_ocean.90x40x15
1752    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1753      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1754    o add saltFlux(+File) forcing capability with periodicExternalForcing
1755    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1756    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1757    o improvements for the MNC output from DIAGNOSTICS:
1758      - correct handling of the unlimitied dimension
1759      - all dims now have associated coordinate variables
1760      - variables located at U, V, and Corner ("Z") points are now written
1761        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1762        *all* data points are output
1763    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1764    o added pkg/seaice/seaice_monitor.F
1765    o mdsio_readfield.F can now read files visible only to master MPI process.
1766    o pkg/seaice: some test code for ice-modified ocean stress
1767    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1768      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1769      spurious negative numbers for precipitation and humidity.  Will cause
1770      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1771    o pkg/ctrl/
1772      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1773        May be enabled via doPackDiag
1774      *  introduce z-scaling of
1775         + gradient (doZscalePack) and
1776         + control (doZscaleUnpack)
1777    o pkg/mdsio/
1778      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1779      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1780    
1781    checkpoint57b_post
1782    o simplify options in diagnostics_fill arguments (remove weird combinations)
1783    o fix MNC coordinate variables so that they now contain per-face index
1784      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1785      general, EXCH2 grids are only aligned to a "local" coordinate system
1786    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1787    o Implement instantaneous output within pkg diagnostics:
1788      setting a negative frequency in data.diagnostics produces
1789     "snap-shot" output (as opposed to time-average if freq > 0)
1790    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1791      NOTE: change ptracer diagnostics name: use 2 characters to work with
1792            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1793    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1794      becomes the coordinate variable for the 'T' dimension
1795    o add CF-style coordinate variables to MNC
1796      - just a first cut:  numbers are meaningless on the cubesphere and
1797        missing along the T axis but otherwise it works!
1798    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1799    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1800    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1801      this is based directly on what the model compute, so that the content of
1802      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1803    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1804    o clean up build options files for SunOS, in particular
1805      - remove -traditional from xmakedepend
1806      - change -xarch=v9 to -xarch=native for f77
1807      - restore use of make (not gmake)
1808      - add CC=gcc if using g77
1809    o changes per discussion of AM, JMC, & EH3 today:
1810      - move redundant "grid" variables out of "state" -- in preparation of
1811        creating proper CF-style coordinate variables and in recognition
1812        that any/all grid variables can be easily copied (eg. w/NCO) from
1813        the grid files into any of the other NetCDF files
1814      - *always* output grid variables with MDSIO (this will eventually be
1815        changed)
1816      - output MNC grid file if useMNC is true
1817    o every instance of _END_MASTER() has been found and replaced with
1818      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1819      preprocessors
1820    o re-arrange diagnostics pkg initialisation:
1821     - allow each package to extend the available diagnostics list
1822     - add some checking and fix small problems (multi-threaded, ...)
1823     - new S/R diagnostics_fill (replace fill_diagnostics):
1824       look through the short list of active diag. (instead of the long list)
1825       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1826    
1827    checkpoint57a_post
1828    o this set of changes restores TAMC compatibility
1829      tested for global_ocean.90x40x15 adjoint on trough
1830      (what a pain)
1831    
1832    checkpoint57a_pre
1833    o some modifs in tools/build_options for sunos
1834    o call ctrl_pack for ctrl at end for optimcycle=0
1835    
1836    checkpoint57
1837    o add horizontal bi-harmonic viscosity for vertical velocity
1838      - new parameter viscA4W (defaults to viscA4)
1839      - affects only non-hydrostatic code
1840      - to be done: no-slip lateral boundary conditions
1841    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1842    o implement Implicit Vertical advection for pTracers
1843    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1844      (implemented also for implicit vertical diffusion & advection)
1845    o OBCS: extend application of tracer open boundary conditions
1846      to a strip beyond the boundary of width Olx/Oly
1847    o add call monitor to TAF set of required calls (flow directives)
1848      and include in natl_box_adjoint
1849    o untangle a few ifdefs related to cost, ctrl, autodiff
1850      untangel a few ALLOW_ECCO_OPTIMIZATION
1851    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1852      (theta2, salt2 in ecco_cost_weights)
1853    
1854    checkpoint56c_post
1855    o OBCS as control variables
1856      - update ctrl_ad_diff.list, obcs_ad_diff.list
1857      - remove balance of obcs controls from default
1858      - fix index bug nobcs in ctrl_init
1859      - fix dummy fields filen in ctrl_pack
1860      - add dummy weights for obcs
1861    o lsopt: comment out fort.94 output
1862    o optim:
1863      - remove unnecessary header files
1864      - adjusted namelists
1865      - add xerbla.F to Makefile
1866    o exf:
1867      - multiple modifications of exf_check_range
1868      - unit change in exf_init_runoff from [m/year] to [m/s]
1869    o mdsio:
1870      - i/o-vector change debugLevel from debLevA to debLevB
1871    
1872    checkpoint56b_post
1873    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1874      is called from DO_THE_MODEL_IO
1875      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1876      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1877      - clean up PTRACERS_WRITE_TIMEAVE a little
1878    o add another verification experiment that tests both the cfc-pkg and
1879      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1880      reactive tendencies treated inline with regular timestepping
1881    o testreport previously did a lousy job of comparing small numbers, so
1882      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1883      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1884      testreport.
1885    o ptracers_monitor: bug fix for MPI
1886    
1887    checkpoint56a_post
1888    o GCHEM: finish reorganizating the package
1889      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1890        (introduces another 3D-array for each passive tracer, but only if
1891        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1892        gchemTendency is not needed because the timestep is done separately)
1893      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1894      - GCHEM is now---more or less cleanly---separate from PTRACERS
1895      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1896        so clear to me how that should be done in a general way.
1897    o CFC: improve formatting of output in CFC_ATMOS
1898    o PTRACERS:
1899      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1900        that ALL experiments with ptracers enable can be checked. This makes
1901        GCHEM_MONITOR obsolete.
1902      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1903        monitorFreq
1904      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1905    o add PTRACERS (PTR0[1-5]) to testreport output
1906    o exf_check_range:
1907      * default changed to .TRUE.
1908      * will check values for niter0 if debLevA, every timestep if debLevB
1909      * STOP in exf_check_range if 'out of range'
1910      * range chosen generous to allow for potential extema
1911      TBD: a version with stricter range
1912           permitted range would be runtime parameters
1913    o GMredi:
1914      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1915      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1916      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1917    o GCHEM:
1918      - move call to GCHEM_FORCING_SEP, so that it is now called before
1919        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1920      - introduced a useGCHEM runtime flag and applied it everywhere.
1921      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1922        this flag is now only visible within GCHEM-pkg routines.
1923      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1924        be replaced by a 3D array that is computed before thermodynamics; for
1925        this, the tracer ID iTracer had to be included into the parameter list
1926        of ptracers_forcing
1927      - set up forward_step to call gchem_forcing, that will replace
1928        gchem_forcing_int in ptracers_forcing
1929      - cleaning up
1930    o small cleaning of exch2: remove files that are also in eesupp/src
1931    
1932    checkpoint56
1933    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1934    o mnc: cleanup "full" files--fixes out-of-memory problem
1935    o ECCO-GODAE
1936      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1937      * fully merged and updated from SIO code
1938        windstress sign change affects
1939        - exf_inscal_[u/v]stress
1940        - sign of xx_tau[u/v] adjustments
1941        - signs in cost_scat
1942      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1943      * natl_box_adjoint updated and compressed
1944      * 2-level checkpoint switch added
1945        (tested in EXP. 1 of natl_box_adjoint)
1946      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1947    o SVD
1948      * first complete, non-hacked version for SVD calculations
1949      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1950        performed via direct access files admtlm_vector.it????
1951        (via ctrl_[un]pack)
1952      * optimcycle is used for ARPACK iteration counter
1953        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1954      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1955        and add linear transforms where necessary
1956      * controls are initial/final SST, SSS (can be extended; need to check
1957        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1958    o mdsio: filename info to both stderr, stdout
1959    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1960      from sign change
1961    
1962    checkpoint55j_post
1963    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1964      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1965    o add consistent build directories and .cvsignore files to verification
1966    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1967    o make all subroutines 30 or less characters in length for certain older
1968      compilers to work (a thorough search only turns up two routines in
1969      pkg/ptracers)
1970    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1971      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1972    
1973    checkpoint55i_post
1974    o change arrays for total vertical diffusivity (2.D if explicit,
1975      3.D if implicit) ; each ptracer uses its own background value.
1976    o added mnc/NetCDF output capability to ocn_compon_interf
1977      - added bits to verification/cpl_aim+ocn so that it can run on
1978        ITRDA and other clusters without the mpirun "-wd" option
1979    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1980      configuration
1981    o give MNC the ability to create additional files rather than
1982      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1983      - the default is just less than 2GB which is a practical limit
1984        on many systems
1985    o Compute the non-local term using either KPP vertical diffusivity (=default)
1986       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1987    
1988    checkpoint55h_post
1989    o add verification test "vermix"
1990    o remove all the *_ioinc flags and replace with the single global
1991      outputTypesInclusive flag
1992    o allow to set a vertical profile of vertical diffusivity for T & S
1993    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1994    o useMNC moved from data.mnc to data.pkg
1995    
1996    checkpoint55g_post
1997    o Renaming carbon AD experiments to comply with testreport conventions
1998    o Updating adjoint of Held-Suarez hs94.1x64x5
1999    o Fixing directives for non-ECCO forward_step, after ECCO directives
2000      have been fixed to avoid recomp. of do_oceanic_phys
2001      Works well for global_ocean.90x40x15,
2002      but recomp. issue remains for carbon
2003    o Updating adjoint output for natl_box_adjoint after
2004      pkg/ecco has been modified (see taga c55d_post)
2005    
2006    checkpoint55f_post
2007    o rename to timeave_init_fixed
2008    
2009    checkpoint55e_post
2010    o some delicate re-shuffle of store directives to avoid one
2011      extra call of do_oceanic_physics
2012      affects ecco_the_main_loop.F, do_oceanic_physics.F
2013      checkpoint_lev1_directives.h
2014    o NB: this may break global_ocean adjoint temporarily,
2015      but it is clear how to fix it. Will do later, need this now.
2016    
2017    checkpoint55d_post
2018    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2019    o ecco_cost_weights is modified to 1x1 runs
2020    o modifs to allow observations to be read in as
2021      single file or yearly files
2022    o enable to read exf forcing fields as either
2023      single file or yearly files (flag useExfYearlyFields)
2024    checkpoint55d_pre
2025    
2026    o switch between 2-level and 3-level checkpointing
2027    o add ability of MNC to write local and "partial" (eg. 2D slices where
2028      the full 3D field is never actually stored) arrays to NetCDF files
2029      with the correct (that is, the complete multi-dimensional) set of
2030      array indicies
2031      - used in mom_vecinv() to write the diagFreq output
2032      - tested (demonstrated) in verification/aim.5l_cs
2033    o further mnc-ification
2034      - add verification/lab_sea to the list with mnc setups
2035      - fix undefined mnc v-names in cd_code
2036      - add kpp to mnc output (both snapshot and timeave)
2037    o non-hydrostatic code
2038      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2039        in calc_gw.F
2040      - defaults to viscAh
2041      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2042        friction or Leith) in non-hydrostatic mode, as long as there is
2043        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2044    o pkg/cost
2045      extend simple cost functions to treat time mean quantities
2046      (T,U,V) via cost_accumulate_state from cost_tile
2047    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2048        be 2 times larger than the minimum size the advection scheme requires.
2049        now get a perfect conservation of salt in advect_cs test-exp (updated)
2050    o GGL90 (Gaspar's TKE mixed layer)
2051      - add horizontal diffusion of TKE, requires exchanges in
2052        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2053        default. In OPA there is no horizontal diffusion of TKE but the
2054        mixing coefficients are computed from a horizontal average of TKE of
2055        6 points or so. I think that diffusion has a little more physical
2056        justification.
2057      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2058        was in vain)
2059      - mask tke-variable in ggl90_init
2060    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2061    o fix biharmonic diffusion on CS-grid.
2062    o more obcs stuff
2063      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2064        for reading boundary values. This routine is called from
2065        obcs_prescribe_read
2066      - updated obcs_check
2067      - changed sponge layer relaxation parameter units for days to seconds
2068      - turned off sponge layer by default
2069      - changed argument list of OBCS_CALC to myTime+deltaTclock
2070      - fixed about 35 bugs in obcs_external_fields_load
2071    
2072    checkpoint55c_post
2073    o obcs stuff
2074      - new runtime flags useOBCSprescribe, useOBCSbalance
2075      - re-arranged obcs_calc
2076      - moved exf_getobcs to obcs_prescibe_read
2077        obcs_prescibe_read is called after ORLANSKI stuff
2078        and independent of it (executable can contain all).
2079      - updated obcs_check
2080      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2081        These may be necessary only if tangential velocities are
2082        prescribed at OB, not sure, needs testing.
2083    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2084      which simplifies the calls and passes the ifc check-bounds test
2085    
2086    checkpoint55b_post
2087    o add a 2D scalar, Z location, exchange_2 routine.
2088    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2089      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2090      affects advect_cs results (for the wrong reason): update output.txt
2091    o use a more standard discretization for biharmonic viscosity ;
2092     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2093      affects results of dome set-up: update output.txt
2094    o fix gad_advection.F (CubedSphere part), back to version 1.23
2095    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2096    
2097    checkpoint55a_post
2098    o merged code to
2099      * prescribe/read time-dependent open boundaries
2100        (works in conjunction with exf, cal)
2101      * sponge layer code for open boundaries
2102      * each boundary N/S/E/W now has its own CPP option
2103        (healthy for the adjoint)
2104    
2105    checkpoint55
2106    o up-to-date adjoint of previous breaks
2107      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2108      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2109      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2110      - carbon: * remove tr1-related adjoint verification
2111                * add ptracer as control variable
2112    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2113      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2114    
2115    checkpoint54f_post
2116    o in verification/carbin/ remove experiment related to
2117      ALLOW_PASSIVE_TRACER (array tr1 etc)
2118      code_ad/ input_ad/ results_ad
2119    
2120    o add two new packages
2121      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2122        + subject to optimization (memory)
2123      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2124        + subject to reordering (many GOTOs in the original code)
2125        + so far opps is called for every (i,j) point, and then operates in
2126          the vertical; one may want to reorder the scheme in order operate in
2127          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2128          fields)
2129    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2130      - all verification tests compile and run with linux_ia32_g77
2131      - defaults are compatible with current input files--nothing
2132        should change if you were not previously using MNC
2133      - MNC output has been added in numerous places (eg. timeave)
2134        but there are still a few writes not yet do-able with MNC
2135        (this is in progress)
2136      - flags now allow for either/or/both use of MDSIO and MNC and
2137        documentation will soon follow
2138      - numerous small formatting cleanups for ProTeX
2139    o add version info (via BUILD_INFO.h) to MNC and stdout
2140    
2141    checkpoint54e_post
2142    o add two new packages
2143      - pp81 (Packanowski and Philander, 1981), Richardson number and
2144        stratification dependent mixing
2145      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2146      - these scheme operate in a similar manner as KPP (without ghat, of
2147        course), however there is only one diffusivity that is used for both
2148        temperature and salinity (and passive tracers)ç
2149    o add offline package
2150    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2151      provided by Stephanie Dutkiewicz
2152    o genmake2: add ability to search for C compilers and cleanup test output
2153      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2154    
2155    checkpoint54d_post
2156    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2157    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2158      leading to additional shift by 5 days each year of integration
2159       (i.e. leading to considerable offset over the years)
2160    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2161    o start with no AB and no initial filtering (staggerTimeStep):
2162      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2163    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2164      (external loading & cpl import/export stay in forward_step.F)
2165    o update coupling interface to work with new staggerTimeStep
2166    o change MDSIO ptracers_pickup.
2167    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2168    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2169    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2170    
2171    checkpoint54c_post
2172    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2173      this affects (truncation error) output.txt of test-exp:
2174       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2175    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2176    o change Qnet to always be the net heat flux, (+upward).
2177      affects (truncation error) output of natl_box exp.: updated
2178    o define the max number of passive tracers in PTRACERS_SIZE.h
2179    o start to test mnc routinely in exp0
2180    o add sea-ice loading (sIceLoad) as a new forcing field.
2181    
2182    checkpoint54b_post
2183    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2184       impressive on Altix and Opteron systems)
2185    o diagnostics can now write NetCDF files through the mnc package
2186    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2187    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2188    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2189      affects (truncation error) output of lab_sea & natl_box exp.: updated
2190    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2191    
2192    checkpoint54a_post
2193    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2194    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2195    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2196    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2197      + internal_wave (shift in writing cg2d_ini_res)
2198    checkpoint54a_pre
2199    
2200    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2201      - modified verification/lab_sea and natl_box_adjoint accordingly
2202    
2203    checkpoint54
2204    checkpoint53g_post
2205    o prepare splitting of thermodynamics: store convect.counter in common block
2206    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2207      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2208    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2209    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2210    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2211    o restore adjointability
2212    
2213    checkpoint53f_post
2214    o modifications that affect AIM experiment results (update output.txt):
2215      - no advection of S at top interface Nr (pkg/generic_advdiff)
2216      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2217    o AIM pkg:
2218      - include stability function into surf.Flux derivative relative to Tsurf
2219      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2220    
2221    checkpoint53e_post
2222    o merged cylindrical coord configuration
2223    o added rotating_tank experiment
2224    checkpoint53e_pre
2225    
2226    checkpoint53d_post
2227    o faulks upgraded: re-generate output.txt that have changed:
2228       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2229    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2230    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2231    o added Sadourny discretization of Coriolis
2232      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2233      - re-enabled use of omega3 (useAbsVorticity)
2234    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2235      vector-invariant equations
2236      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2237    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2238      hopefully without new bugs
2239      - still to do: biharmonic friction for non-hydrostatic w
2240    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2241    o regenerated output for global_ocean_ebm (using -ieee)
2242    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2243      of mom_common/
2244      - simple re-arrangement of instructions within computing loop
2245    checkpoint53d_pre
2246    
2247    checkpoint53c_post
2248    o new version of coupler for AIM+thSIce and Ocean models
2249     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2250     - land: change Evaporation of snow
2251     - aim with thSIce: fix bug in snow-precip.
2252    o changes to calc_gw.F
2253     - bug fix for w^2 term near the bottom boundary
2254     - (hopefully) improve the lateral slip boundary condtions for use with
2255        partial/looped cells
2256      - because the bug fix changes two verification experiments anyway (exp5
2257        and plume on slope), change the lateral boundary condition from half slip
2258        to the value of no_slip_sides
2259    o ebm package wasnt quite up to the parallel task. Fixed that.
2260    o Adjoint of EBM package + verification
2261      * TLM OK
2262      * ADM not sufficient accuracy yet (needs further testing)
2263    
2264    checkpoint53b_post
2265    o Commiting new energy balance model to repository
2266      * package is pkg/ebm
2267      * verif. is verification/global_ocean_ebm
2268      * references are in ebm_driver.F
2269    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2270    C        Global thermohaline circulation. Part I:
2271    C        Sensitivity to atmospheric moisture transport.
2272    C        J. Climate 12(1), 71-82
2273    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2274    C        Global thermohaline circulation. Part II:
2275    C        Sensitivity with interactive transport.
2276    C        J. Climate 12(1), 83-91
2277    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2278    C        Destabilization of the thermohaline circulation
2279    C        by atmospheric eddy transports.
2280    C        J. Climate 7(12), 1870-1882
2281    o Will need long integration testing.
2282    checkpoint53b_pre
2283    
2284    o created pkg/mom_common in preparation for variable viscosity code
2285    o renamed and split ini_mnc_io
2286    o pkg/land: only liquid water can diffuse or run-off
2287    o AIM using land: soil wetness availability account for snow
2288    o added printMapIncludesZeros to EEPARMS namelist
2289    
2290    checkpoint53a_post
2291    o restore TAMC compatiility for exf_constants.h
2292      (no usage of _d in .h)
2293    o Additional storing in KPP in an attempt to fix
2294      TAMC problem with adjoint of KPP code.
2295      (no success...)
2296      Identical code works fine with TAF.
2297    o Fixed verification/natl_box_adjoint experiments.
2298      Initial conditions for Experiments 4 and 5 are now
2299      set to "SEAICE_initialHEFF=0", which is more reasonable,
2300      and hence gives results closer to that of Experiment 2.
2301      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2302    
2303    checkpoint53
2304    o stable checkpoint with up to date adjoint
2305      TLM tests only run for 1st grdchk at the moment. Its unclear if
2306      this is a code problem or a problem with resetting code for g_
2307      variables that is being autogenerated wrong.
2308      Otherwise:
2309       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2310       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2311         are both still in chaos following their security messes.
2312    
2313    checkpoint52n_post
2314    o various build (mostly genmake2) changes including:
2315      - ability to build/run more easily within Cygwin and MacOS X
2316      - more complicated Makefiles with a stronger dependence on Gnu Make
2317    o pkg/seaice modifications
2318      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2319        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2320        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2321      - changed proxy for geostrophic velocity and updated
2322        verification/lab_sea/results/* accordingly
2323      - removed ADI dynamic solver from pkg/seaice
2324      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2325        they caused a segmentation fault under certain circumstances
2326      - removed unused field WATR
2327    o bug fix in exf-package:
2328      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2329         now reflect that.
2330    o small fixes in the cal-package:
2331      - set reference date to first of January for the 'model'-calendar
2332      - failing of cal_CheckDate in cal_FullDate now actually results in a
2333        warning
2334    o small modifications in exf-package to increase flexibility:
2335      - change climtempfreeze from a constant to a runtime parameter that
2336        is specified in data.exf_clim (default = -1.9)
2337      - introduce runtime parameter windstressmax (default = 2.0) that is
2338        specified in data.exf
2339    o fix in pkg/thsice:
2340      - update Evap (Tsf changes) to be consistent with Latent heat flux
2341      - maintain snow precipitation unchanged (even if Tsf >=0).
2342     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2343    
2344    checkpoint52m_post
2345    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2346      this does not change any of the results, because myIter=0 in swfrac always
2347      lead to jwtype=2 (the default anyway), but the call makes little sense
2348      as a default
2349    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2350    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2351      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2352    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2353    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2354    o extending useSingleCpuIO option to work with new exch2 I/O format
2355      - old-style, missing-tile I/O is still accessible by defining CPP
2356        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2357    o monitor package can write to NetCDF files and/or STDOUT
2358    o fix re-definition bug in MNC_GRID_INIT_ALL()
2359    o doc/api_reference added
2360      - a framework for building an API Reference Manual using all
2361        the "protex" comments embedded in the code
2362      - see pkg/generic_advdiff, pkg/mnc for examples
2363    o MNC:
2364      - make myThid the last argument for all subroutines
2365      - new default for the grid files: NO halos
2366      - add useMNC and other run-time flags
2367      - separate per-file-group handling of the unlimited dimension
2368      - early initialization of MNC w/ flags read at the eeboot stage
2369        and lookup tables set in initialize_fixed
2370      - write all MNC output to a freshly-created directory
2371    o thermodynamics sea-ice (thsice) is now tested with testreport.
2372    o test exp. advect_cs: use the standard cs32 grid ; update output.
2373    o Added functionality to grdchk:
2374      pick global i,j,k position (or nearest wet) where to perform check.
2375    
2376    checkpoint52l_post
2377    o new land formulation:
2378      a) use ground enthalpy as prognostic variable to ensure exact
2379         energy conservation.
2380      b) account for water temperature and for latent heat of freezing
2381         in all processes (rain, run-off, ground storage)
2382      c) compute surface and ground temperature implicitly.
2383    o aim_v23 modification for new land model:
2384      a) Treat separately land / ocean / sea-ice surface fluxes
2385         to allow implicit computation of land & sea-ice surface temp.
2386      b) add snow precipitation.
2387    checkpoint52l_pre
2388    
2389    o fix problem (when 1 tile is empty) in min/max monitor.
2390    o fix bug in timeAve (u,vZetatave in common block)
2391    o no restoring terms under ice for pkg/seaice
2392    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2393    o bug fix for pkg/seaice pickups
2394    o change MNC call locations and add coordinate attributes
2395    o mask vorticity at the corner ; affects global_ocean.cs output
2396    o fix ini_curvilinear_grid ; test CS experiments with mpi
2397    o aim.5l_cs: modify sea-ice fraction input file ; update output
2398    o exf: Adding simple range check routine for exf fields after read
2399    
2400    checkpoint52k_post
2401    o removed top-level directory "diags"
2402      - we migrated these functions to pkg/timeave a long time ago
2403    o fixed bug introduced in pkg/monitor
2404    o accuracy ctrlprec = 32 insuffient for gradient checks using
2405      averaged fields (I/O via cost_averages)
2406      -> use ctrl.h in active_file*.F to control I/O precision.
2407    o paramter list of CALL ADTHE_MAIN_LOOP
2408    o added initial do_the_model_io to ecco
2409    o set all ...Freq to zero after cost_final
2410      taveFreq, dumpFreq, pChkptFreq
2411    o MAIN and ECCO differentiability restored
2412    
2413    checkpoint52j_post
2414    o fix nchklev in tamc.h for global_ocean...
2415    o Bringing flow and store directives up-to-date
2416    o Really weird thing!
2417      call do_the_model_io from the_main_loop with parameters
2418      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2419      TAF places a faulty re-call of initialise_varia
2420      after cost_final call which should not be there!
2421    checkpoint52j_pre
2422    
2423    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2424      error messages
2425    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2426    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2427      debug output
2428    o modfied mdsio_writefield.F to handle non-global files under exch2
2429    o update AIM Cubed-Sphere exp (aim.5l_cs):
2430      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2431    o update AIM Equatorial Channel exp:
2432      use standard aim_v23 pkg and change the SST fields to be more realistic.
2433    o globalFile now works with exch2
2434    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2435      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2436    o limit timeave output for hi-res integrations
2437    
2438    checkpoint52i_post
2439    o removed CPP_EEOPTIONS.h from verification/*/code
2440    o updated the tiling for global_ocean_pressure
2441    checkpoint52i_pre
2442    
2443    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2444      the old pkg/aim).
2445    
2446    checkpoint52h_pre
2447    o shortened offending lines in exch2_send_rx?.template
2448    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2449    o genmake2: add build & execute test for NetCDF code
2450    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2451      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2452    o added useSingleCPUIO flag to monitor.F and mon_out.F
2453    o added temporary hack for sea-ice dynamics on the cube:
2454      metric terms are ignored and it is assumed that
2455      there is no sea-ice on cube faces 1, 2, 4, and 5.
2456    
2457    checkpoint52f_post
2458    o added exch2 cube routines to pkg/exch2
2459    o modified hs94.cs-32x32x5 to use it
2460    o added new grid files to hs94.cs-32x32x5
2461    checkpoint52f_pre
2462    
2463    checkpoint52e_post
2464    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2465      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2466    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2467      to work with implicit vertical advection and AB ;
2468    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2469    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2470     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2471    checkpoint52e_pre
2472    
2473    o fix bug in impldiff when Nr=1 or Nr=2.
2474    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2475    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2476    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2477      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2478    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2479    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2480    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2481    
2482    checkpoint52d_post
2483    o re-tiled many expts to allow comparison in multi-processor mode
2484      - updated output accordingly
2485      - changed hs94.128x64x5 to use intial T from file rather than use the
2486        random number generator
2487    o add infrastructure in model routines for fizhi and gridalt packages
2488    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2489    o changes to permit hi-res, cubed-sphere, configuration
2490      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2491      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2492      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2493        of surface winds for the cube
2494      (A verification experiment, based on global_ocean.cs32x15, but with
2495       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2496       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2497       complete with example surface forcing files and matlab scripts to look
2498       at the output and compare it with that of global_ocean.cs32x15.)
2499    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2500       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2501       to conform to the common rule.
2502    o check-in the first version of the coupler + interfaces for multi-components
2503       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2504       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2505       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2506       - ocean and atmos. share the same horizontal grid (no interpolation).
2507       - exchanges between component and coupler is done in forward_step
2508    o new verification experiment, cpl_aim+ocn:
2509       coupled ocean - AIM atmosphere on cs32 grid.
2510    
2511    checkpoint52d_pre
2512    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2513    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2514    
2515    checkpoint52c_post
2516    o Fixing OPTIONS files for use of exf:
2517      - ALLOW_ECCO not needed
2518      - ECCO_CPPOPTIONS.h should not be included from
2519        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2520        as has been the case in the past
2521      - All cal/exf related options are currently set in
2522        single header file. Should remain so until we
2523        agree on a consistent new policy.
2524    o Removed all CPP options for cal package.
2525      cal has no more CPP options.
2526    o modified STOREs in GAD_ADVECTION
2527    o corrected key comp. for passkey
2528    
2529    checkpoint52b_post
2530    o new version: "thsice" of thermodynamic sea-ice pkg:
2531     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2532     - modify fluxes but do not change theta directly;
2533     - light cleaning of bulk_force pkg (still needed with thsice).
2534     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2535       + output_thsice.txt to test thsice & bulk_force pkgs.
2536    o put back grid & coriolis monitor output.
2537    checkpoint52b_pre
2538    
2539    o call "do_the_model_io" at the beginning (=> dump initial state)
2540    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2541    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2542      (need info on NUMBER_OF_PTRACERS)
2543    o missing PTRACERS headers in some routines
2544    o default tamc.h in pkg/autodiff supposed to crash
2545      to ensure proper customization
2546    
2547    checkpoint52a_post
2548    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2549      - moved surfaceTendencyTice from pkg/seaice to main code
2550      - subroutine FREEZE_SURFACE now limits only surface temperature
2551        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2552        => new output.txt for global_ocean.cs32x15 & global_with_exf
2553      - keep the old version of FREEZE for backward compatibility;
2554        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2555      - corresponding modifs for TAF directives
2556    o added surface flux output variables to TIMEAVE_STATVARS
2557    o time-averaged output for pkg/ptracers
2558    o fix problem with ECCO-related divided adjoint
2559      snapshot file was missing some ad-variables,
2560      but no warning issued by TAF
2561    
2562    checkpoint52a_pre
2563    o some bug fixes for #undef REAL4_IS_SLOW
2564    
2565    checkpoint52 = ecco_c52_e35
2566    o after testing adjoints of checkpoint51u_post
2567    
2568    checkpoint51u_post
2569    o this is the post-merge tag of the ecco-branch
2570      (needs another clean checkout and re-testing)
2571    o various natl_box_adjoint configs and results
2572      but no input fields
2573    o obcs adjoint not yet merged!
2574    o adding ECCO global 1x1 and 2x2 degree configs
2575    o updated/extended some store directives for seaice
2576    o pkg/ecco now containes ecco-specific part of cost function
2577    o top level routines the_main_loop, forward_step
2578      supersede those in model/src/
2579      previous input data.cost now in data.ecco
2580      (new namelist ecco_cost_nml)
2581    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2582    
2583    checkpoint51t_post
2584    o this is the pre-merge tag of the ecco-branch
2585    
2586    checkpoint51s_post
2587    o cleanup: removed various obsolete #define-s
2588    o pkg/grdchk
2589      - renamed 'ph-grd 3' to 'grad-res'
2590      - merged from ecco-branch
2591        (remaining bug fixes for obcs gradient checks)
2592      - additional high-precision output for testreport
2593        (grep for 'precision_grdchk_result')
2594    
2595    checkpoint51r_post
2596    o cleaned up or removed CPP_OPTIONS.h files
2597    o updated results for some of the tests to reflect the new
2598      optfiles (-ieee: -O0 instead of -O3)
2599    
2600    checkpoint51q_post
2601    o cd_code:
2602      - moved cd_scheme.F -> cd_code_scheme.F
2603      - separate read_checkpoint from cd_code_ini_vars.F
2604      - separated cd_code part from write_checkpoint
2605      - updated AD_SOURCE, generated .flow
2606      - added CD_CODE_VARS.h to the_main_loop
2607      - Moving cd_code specific store dir.s to pkg/cd_code
2608    o ctrl package totally restructured
2609      - pack/unpack now optional and decoupled from
2610        xx_/adxx_ I/O
2611      - ctrl_pack/unpack cleaned
2612        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2613      - confined inclusion of AD_CONFIG.h to where necessary.
2614    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2615    
2616    checkpoint51p_post
2617    o create initial cd_code package
2618      - WARNING: the initialization of fields within packages
2619        is broken because INI_FIELDS (where READ_CHECKPOINT is
2620        called) is called *before* PACKAGES_INIT_VARIABLES.
2621        This seems to be backwards since
2622        1) its important to initially zero the entire field including
2623           the "halo" region
2624        2) zeroing needs to be done *before* reading pickup info
2625           and the pickup call might or might not happen in any
2626           particular run
2627      - this needs an overhaul for R2
2628    o cleanup verification/*/code/GMREDI_OPTIONS.h
2629    o cleanup testreport
2630    
2631    checkpoint51o_post
2632    o bringing AD-related verif's up to date with genmake2
2633      - carbon/
2634      - global_ocean.90x40x15/
2635      - hs.94.1x64x5/
2636      - (front_relax/ )
2637    o (more) consistent directory structure for AD-related verif.'s
2638    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2639    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2640    o bug fix in find_alpha.F for MDJWF:
2641      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2642        change rho -> rho-rhoConst
2643      - replace call find_rho to find_rhonum
2644    o initialisation of rFlx extended to full array (required by TAF)
2645      and shifted to thermodynamics
2646    o removed PTRACERS.h in ptracers routine
2647    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2648    o Correcting initialisations for fVerU, fVerV.
2649    o helping TAF to recognize dependency on kUp for
2650      fVerU, fVerV
2651    o Replacing delZ by delR in pkg/ctrl/
2652    checkpoint51o_pre
2653    
2654    o undid all of cp51 pending some cleanups and discussion
2655    o added the [#include "AD_CONFIG.h"] statement to all files that need
2656       it for adjoint/tl #defines
2657     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2658     o removed tools/genmake since it no longer works
2659    
2660    checkpoint51n_post
2661    o modifications to make FREEZE flux visible to pkg/kpp
2662      - moved surfaceTendencyTice from pkg/seaice to main code
2663      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2664      - subroutine FREEZE now limits only surface temperature
2665        (this means new output.txt for global_ocean.90x40x15,
2666         global_ocean.cs32x15, and global_with_exf)
2667    o added surface flux output variables to TIMEAVE_STATVARS
2668    
2669    checkpoint51n_pre
2670    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2671    o added [#include "AD_CONFIG.h"] to all files that use the following
2672      defines:
2673      - ALLOW_ADJOINT_RUN
2674      - ALLOW_TANGENTLINEAR_RUN
2675      - ALLOW_ECCO_OPTIMIZATION
2676    
2677    checkpoint51m_post
2678    o incorporating changes to get TAMC/TAF working in genmake2
2679      - added new TAMC/TAF targets to the Makefile
2680      - various cleanups related to package handling
2681      - these changes should have no impact on the forward model
2682    
2683    checkpoint51l_post
2684    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2685     - faster algorithm for cal_addtime.F
2686     - higher precision arithmetic, where needed
2687     - pkg/exf *startdate variables changed from calendar date to
2688       model integration time
2689    
2690    checkpoint51l_pre
2691    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2692    o enable to apply restoring on S & T only in a latitude band.
2693    o update output (external_forcing_surf modif. change truncation errors)
2694       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2695    
2696    checkpoint51k_post
2697    o change default to: useNHMTerms=.FALSE.
2698     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2699       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2700     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2701        exp1, ideal_2D_oce
2702     - change data file of oceanic exp (leave the results unchanged for now)
2703       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2704    o set gravitySign automatically according to the vertical coordinate used
2705      (and change sign: back to "logical" value: +1 when R increases downward)
2706    o added an include barrier to the default CPP_OPTIONS.h and
2707      removed the #include "PACKAGES_CONFIG.h" from it
2708    o fix a bug in mom_fluxform (from chk51j_post)
2709    
2710    checkpoint51j_post
2711    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2712    o adjusted some flow directives (dynamics, thermodynamics)
2713    o added cubed-sphere case to test cost function
2714    o heckpoint_lev?_directives.h now include
2715      pkg-specific directives, whenever those are enabled.
2716    o Moving pkg-specific flow directives to corresponding pkg
2717      Moving pkg-specific differentiation list to corresponding pkg
2718      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2719      ---> conventions are
2720           - pkg_ad.flow
2721           - pkg_ad_diff.list
2722           - pkg_ad_check_lev?_dir.h
2723    
2724    checkpoint51i_post
2725    o merge of the branch-genmake2
2726      - knowingly breaks the older genmake
2727      - automatic generation of all ALLOW_${PKG_NAME} defines
2728      - new testreport supersedes older testscript
2729    o large number of package inclusion and header cleanups
2730    checkpoint51i_pre
2731    
2732    o new output for adjoin of global ocean vector invariant
2733    o fix for checkpoint of thermodynamic seaice and bulk_force
2734    o Steph gchem various cleanups
2735    
2736    checkpoint 51h_pre
2737    o fixed some single quotes
2738    o modify gchem pkg to be more versatile
2739    o modifications to clean up dic pkg
2740    o add pkg/cfc
2741    
2742    checkpoint51g_post
2743    o provide links for ARPACK and ADM*TLM
2744    o start removing verification/vero/
2745    o update AD-related stuff
2746      (in particular some IF-statements in model/src/ routines)
2747    o adding to verification/global_ocean.90x40x15/ adjoint of
2748      vector invariant setup
2749    
2750    checkpoint51f_post
2751    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2752    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2753      of tracer Green's fucntions for ocean inversion project.
2754    
2755    checkpoint51f_pre
2756    o Added on-the-fly spatial interpolation capability
2757        "USE_EXF_INTERPOLATION" to pkg/exf.
2758      - This is a temporary Cartesian-grid hack until
2759        the super-duper ESMF coupler becomes available.
2760      - See verification/global_with_exf/README for usage example.
2761      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2762        flags and modified pkg/seaice accordingly.
2763    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2764        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2765        non-local transport term.
2766    
2767    checkpoint51e_post
2768    o pkg/mom_vecinv:
2769      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2770      - add time-ave diagnostic of vorticity advection.
2771    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2772    o atmospheric geopotential: - include water vapor effect;
2773                                - use p^kappa in p* scaling.
2774    o land pkg: read initial state from files.
2775    o AIM : add stratospheric drag in the upper level
2776    
2777    checkpoint51d_post
2778    o change function ILNBLNK (=> last non-blank char.) to return zero
2779      (instead of the string length) when the string. char is empty
2780    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2781    o modif's to restore TAMC compatibility
2782      - avoid "_d" constructs in PARAMETER declarations
2783      - avoid interrupting lines by comment lines
2784    o Use cluster local disks for purely local I/O
2785      vs. globally visible disks needed for ctrl stuff
2786      (merged from ecco-branch)
2787      - new active_file_loc... and mdsio_..._loc routines
2788      - affected packages: autodiff, ctrl, grdchk, mdsio
2789    
2790    checkpoint51c_post
2791    o introducing integer flag debugLevel
2792      - debLevZero: suppress all output
2793      - debLevA: standard
2794      - debLevB: equivalent to current debugMode=.TRUE.
2795    o introducing pathname variable mdsioLocalDir for mdsio
2796      that can be specified at runtime
2797      (relevant for cluster I/O to local disk)
2798    `
2799    >>>checkpoint51b_post
2800    adjoint of ptracers
2801    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2802    o extended state in checkpoint_lev?, etc.
2803    o alternative ctrl/cost with tr1 or ptracer
2804    o new comlev1_bibj_ptracers
2805    o new ptracers.flow
2806    o made ptracers_forcing same as external_forcing_s
2807    o added verification for adjoint with ptracers
2808      - adm. grdchk fail so far
2809      - tlm. grdchk OK
2810      - checked tapelev/comlev recomputations: OK
2811    <<<checkpoint51b_pre
2812    
2813    checkpoint51a_post
2814    o added code for biogeochemistry package
2815      - new pkgs: dic, gchem
2816      - new subroutine in ptracers
2817    o modify code for biogeo packages
2818      - in model/src and pkg/ptracers
2819    
2820    checkpoint51
2821    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2822      - autodiff, ctrl, exf, grdchk, seaice
2823      kept separate packages
2824      - cost, ecco, obcs
2825    o updating verification/internal_wave, verification/lab_sea
2826      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2827    
2828    checkpoint50i_post
2829    o Preparing next differentiable checkpoint and sync
2830      of MAIN vs. ecco-branch
2831      - 1st step: this one is differentiable
2832      - 2nd step: next(! not this) checkpoint will have updated packages
2833                  from ecco-branch)
2834    
2835    checkpoint50h_post
2836    o new package "land": provide surface BC for AIM.
2837    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2838    o AIM: use true log-P extrapolation for near surface temp (= as in
2839        F.Molteni paper) ; update aim.5l_cs output.
2840    o New variable in PARM03 for more flexible pickups
2841    o somewhat cleaned package initialisation sequence for
2842      ctrl/ cost/ ecco/ in packages_... routines
2843    
2844    checkpoint50g_post
2845    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2846      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2847      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2848        made the default because of faster convergence than ADI
2849    
2850    checkpoint50f_post
2851    o exf totally restructured
2852      - replaced all exf_set_ routines by one generic exf_set_gen.F
2853        and made sure it's still differentiable
2854      - split exf_getffields.F into new exf_bulkformulae.F
2855      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2856      - updated adjoint/makefile and relevant verif. accordingly
2857    
2858    checkpoint50f_pre
2859     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2860          + change Evap over land. (update aim.5l_cs output)
2861     o added missing .cvsignores and made uniform across expts
2862     o changed configuration of tidal_basin_2d expt
2863     o added pkg/debug functions for tracing code in fatal crashes
2864     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2865     o new fn in pkg/monitor to stop model if solution grows too big
2866     o removed lots of single quotes from comments
2867    
2868    checkpoint50e_post
2869    o make KPP work with PTRACERS
2870     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2871       nearly a copy of kpp_transport_s
2872     - there is no analogue to SurfaceTendencyS, so I have to use
2873       gPtr(of the surface layer) instead
2874    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2875    checkpoint50e_pre
2876    
2877    checkpoint50d_post
2878    o change kpp output from multiple-record state files to single-record state
2879      files analogous to write_state.F
2880    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2881      analogous to the cg2d-related output.
2882    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2883      so that writing to internal file fn (with length 512) fails.
2884    checkpoint50d_pre
2885    
2886    checkpoint50c_post
2887    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2888    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2889    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2890    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2891    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2892    
2893    checkpoint50c_pre
2894    Merging from release1_p13:
2895    o bug fix for pkg/seaice dynamic solver
2896    o Added SEAICE_initialHEFF to pkg/seaice
2897    
2898    checkpoint50b_post
2899    o store u*,v* in gU,V instead of in guNm1,gvNm1
2900    o in order to put the momForcing out of the Adams-Bashforth:
2901      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2902      to timestep.F
2903    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2904    o re-generate output for highly sensitive test-exp:
2905       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2906    
2907    checkpoint50b_pre
2908    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2909    o corrected CPP option mismatch in exf_Bulk... functions for case
2910      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2911    
2912    checkpoint50a_post
2913    o Bug fix for merging between c50 and KPP.
2914      ikey was passed from thermodynamics to kpp_calc via
2915      common block rather than being recomputed in kpp_calc,
2916      in contradiction with new key itdkey.
2917      New key ikppkey created, and tamc.h headers updated.
2918    
2919    checkpoint50
2920    - 2nd step of merge with ecco-branch:
2921      merge changes in ecco-branch back into main trunk
2922    - bug fix in find_alpha
2923    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2924    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2925    - merged some sliced AD support routines
2926    
2927    checkpoint49
2928    merged from ecco-branch:
2929    o exf:
2930      - Enable initialisation of forcing fields to constant
2931        (runtime) values.
2932      - in exf_getffields.F
2933        Reduce i-/j-loop to interior domain, discarding overlaps.
2934        That also fixes wrong TAF-key computations for key_1, key_2
2935        with bulf formulae.
2936      - exf_init.F modify #ifdef for exf_init_evap
2937      - exf_getffieldrec.F, ctrl_getrec.F
2938        The following INT-usages are not safe:
2939          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2940          fldcount = int(fldsecs/fldperiod) + 1
2941        and were modified.
2942    o autodiff: checkpoint_lev...
2943      - updated storing for bulk formulae (some arrays were missing)
2944      - added state for seaice package
2945      - synchronized with main branch
2946    o DIVA:
2947      Modif.s in
2948      - the_main_loop.F
2949      - the_model_main.F
2950      and added cost_final_restore.F cost_final_store.F
2951      o With these changes, it is possible to fully separate
2952        the first forward run to compute the cost function (mdthe_main_loop)
2953        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2954        into separate model executions.
2955        This enables better tuning of DIVA to given queue sizes.
2956      o Loss of cost function value in consecutive DIVA runs is
2957        fixed by storing to 'costfinal' file.
2958      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2959        beginning/end of adjoint integration is accounted for.
2960      The current changes apply to TAF-1.4.26.
2961      TAF has one remaining bug, requiring one manual change
2962      (see MITgcm manual).
2963    o cal: synchronized between MAIN and ecco-branch
2964    
2965    checkpoint48i_post
2966    o Changes to restore differentiability of code w.r.t. previous tag
2967      (mostly adding new routines to make list and replacing
2968      pressure by totPhiHyd).
2969    o Updated and merged grdchk package
2970      - has both ADM and TLM checks
2971      - works for single- and multi-proc.
2972      - output cleaned
2973      - worked successfully for parallel DIVA
2974    o genmake:
2975      - Adding -platform=SP4
2976      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2977    o Modif. for DIVA:
2978      ctrl_unpack should not be called in intermediate DIVA interval.
2979      (similar thing would apply for active files such as
2980      tbar, sbar, psbar, which should not be reinitialised;
2981      only relevant for ecco-branch)
2982    
2983    checkpoint48h_post
2984    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2985    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2986    o Added SEAICE_initialHEFF to pkg/seaice
2987    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2988    
2989    checkpoint48g_post
2990    --- EOS:
2991    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2992      store total Potential in totPhyHyd for diagnostics & EOS.
2993    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2994    --- Pressure/geopotential gradient:
2995    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2996    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2997      ( changes results of global_ocean_pressure )
2998    o NLFS + z-coord.: add eta*Rho' contribution.
2999    o accurate phiHyd when using interface-W at the middle between 2 centers
3000     ( changes results of ideal_2D_oce )
3001    o includes r* 2nd term in potential gradient.
3002    
3003    checkpoint48f_post
3004    Merging from release1_p12:
3005    o Modifications for using pkg/exf with pkg/seaice
3006      - improved description of the various forcing configurations
3007      - added basic radiation bulk formulae to pkg/exf
3008      - units/sign fix for evap computation in exf_getffields.F
3009      - updated verification/global_with_exf/results/output.txt
3010    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
3011      (SBO) core products, including oceanic mass, center-of-mass,
3012      angular, and bottom pressure (see pkg/sbo/README.sbo).
3013    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
3014      to avoid negative values in shallow regions.
3015      - updated verification/natl_box/results/output.txt
3016      - updated verification/lab_sea/results/output.txt
3017    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
3018    o Added useSingleCpuIO option (see PARAMS.h).
3019    o Updated useSingleCpuIO option in mdsio_writefield.F to
3020      work with multi-field files, e.g., for single-file pickup.
3021    o pkg/seaice:
3022      - bug fix in growth.F: QNET for no shortwave case
3023      - added HeffFile for specifying initial sea-ice thickness
3024      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
3025    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
3026      kpp_transport_t.F, forward_step.F, and the_main_loop.F
3027    o pkg/seaice:
3028      - adjoint-friendly modifications
3029      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
3030    
3031    checkpoint48e_post
3032    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
3033    o dynamics: change definition of computational domain & adapt mom_fluxform
3034      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
3035    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
3036        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
3037        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
3038        global_ocean.90x40x15 global_with_exf global_ocean_pressure
3039        inverted_barometer solid-body.cs-32x32x1
3040      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
3041    
3042    checkpoint48d_post
3043    o in preparation for r*:
3044     a) use pre-computed gradient of hydrostatic potential:
3045        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
3046     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
3047        => affects results of glob_oce_pressure (different truncation error)  
3048      update output.txt of ideal_2D_oce & global_ocean_pressure
3049    
3050    checkpoint48d_pre
3051    o in preparation for r*:
3052      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
3053      pass the 2 comp. of the grad. as arguments to momentum S/R.
3054      but for the moment, only used if it does not change the results.
3055    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
3056    
3057    checkpoint48c_post
3058    Modifications in treatment of initial flux forcing controls
3059    to avoid extra storing of flux fields.
3060    
3061    checkpoint48c_pre
3062    o Added tidal_basin_2d experiment (currently 1D!)
3063    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3064    
3065    checkpoint48b_post
3066    o r* coordinate added in #ifdef NONLIN_FRSURF block.
3067     (modification to pressure gradient not yet implemented)
3068    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
3069      (for U & V) that are used for vertical advection of momentum.
3070    
3071    checkpoint48a_post
3072    o In preparation for r*, use temp. array to compute vertical transport
3073       in flux-form momentum pkg. => change results of few test-exp.
3074      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
3075                        lab_sea, natl_box & plume_on_slope
3076    
3077    checkpoint48
3078    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
3079    
3080    checkpoint47j_post
3081    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
3082    o moved adexch from forward_step to addummy_in_stepping
3083    o added exch in ctrl_map_...
3084    o aveFreq.=0. at end of cost_final to avoid overwrite in
3085      reverse checkpointing loop
3086    o Yet more changes in gmredi:
3087      * adgmredi_calc_tensor
3088        avoiding all recomputation of gmredi_slope_limit
3089      * adgmredi_x/y/rtransport
3090        added flag for excessive storing to avoid recomp. of
3091        u/v/rtans, dTdx/y/z
3092        -> this is not really necessary and very memory-consuming
3093      * adgmredi_slope_psi:
3094        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
3095      * gmredi_slope_limit
3096        re-activated full calculation of taperfct for case 'ac02'
3097    o updating verification/ adjoints of carbon, global_ocean.90x40x15
3098    
3099    checkpoint47i_post
3100    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
3101    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
3102      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
3103    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
3104    o gmredi: fix few bugs.
3105    
3106    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
3107    This will be a good checkpoint to plug into the ecco-branch.
3108    o few modif.'s to get latest version adjointed
3109      (mainly kick out code in ini_linear_phisurf)
3110    o modif's to run adjoint with exactConserv
3111    o case GM_BOLUS_ADVEC should be cleaned
3112      S/R gmredi_slope_psi should be cleaned
3113    o verification/carbon now has exactConserv=.TRUE.
3114    
3115    checkpoint47g_post
3116    o time-average AIM output: becomes independent from statvars time-average
3117      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
3118    o After TAF bug fix:
3119      Tested adjoint of gmredi package.
3120      Tests were done with checkpoint47 rather than with latest
3121      checkpoint47f_post since the latter is broken for the adjoint
3122      verification/carbon/ contains both ADM and TLM gradient checks.
3123    Here they are, before they get changed/lost/stolen.
3124    Mostly modif.'s to fix numerical sensitivities.
3125    Gradient checks OK for
3126    - GM_taper_scheme:
3127      * clipping
3128      * ac02
3129      * linear
3130      * glw91
3131      * dm95
3132      * ldd97
3133    - GMREDI_OPTIONS:
3134      * GM_VISBECK_VARIABLE_K
3135      * GM_NON_UNITY_DIAGONAL
3136      * GM_EXTRA_DIAGONAL
3137      * GM_BOLUS_ADVEC
3138    in conjunction with data.gmredi parameters to be checked in
3139    in a few minutes under verification/carbon/code/
3140    
3141    checkpoint47f_post
3142    Merging from release1_p10:
3143    o modifications for using pkg/exf with pkg/seaice
3144      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
3145        and SEAICE_EXTERNAL_FLUXES
3146      - pkg/exf CPP options EXF_READ_EVAP and
3147        EXF_NO_BULK_COMPUTATIONS
3148      - usage examples are Experiments 8 and 9 in
3149        verification/lab_sea/README
3150      - verification/lab_sea default experiment now uses
3151        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
3152    
3153    checkpoint47e_post
3154    o created a tag prior to creating a branch
3155    
3156    checkpoint47d_post
3157    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
3158      at the bottom boundary had an erroneous half slip boundary condition
3159    o added bottom drag and no slip boundary condition capabilities to
3160      oceanic pressure coordinates code
3161    o added new verification experiment global_ocean_pressure, this experiment is
3162      also described in the tutorial section of the manual
3163    checkpoint47d_pre
3164    
3165    checkpoint47c_post
3166    o Added a verification experiment for a global cubed-sphere ocean run
3167      -  verification/global_ocean.cubed32x32x30
3168      -  uses pkg/therm_seaice and pkg/bulk_forcing
3169    
3170    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
3171    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
3172      when using P-coordinate; only implemented for atmospheric config.
3173    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
3174      NOTES: requires option NONLIN_FRSURF to be "#define".
3175    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3176    
3177    checkpoint47b_post
3178    Merging from release1_p9:
3179    o pkg/seaice
3180      - removed GOTO's and added taf directives
3181      - double precision constants to reduce the g77 (Linux)
3182        to F77 (SGI) differences reported in release1_p8
3183    o tools/genmake
3184      - added SGI options
3185    o verification/testscript
3186      - updated to that of checkpoint47a_post
3187    o verification/global_ocean.90x40x15/input/eedata
3188      - modified for SGI f77 compatibility
3189    o verification/lab_sea
3190      - added description of sea-ice model
3191      - added missing matlab routines
3192      - added test of thermodynamics parallelization
3193    
3194    checkpoint47a_post
3195    o new pkg: aim_v23
3196     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3197       for now, keep the same surface forcing as before.
3198     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3199     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3200     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3201    o add diagnostic of surface correction term in monitor output
3202    
3203    o bulk_force and therm_seaice
3204    - Two packages:  bulk_force (Bulk forcing)
3205      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3206    - Earlier integration from Stephaine Dutkiewicz
3207      and Patrick Heimbach.
3208    - Two ifdef statements for compile time,
3209       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3210    
3211    checkpoint47
3212    differentiable version of checkpoint46n_post
3213    o bug fix in quasihydrostaticterms
3214    o * "clean" adjoint code (in terms of extensive recomputations)
3215        can now be obtained for all GMREDI options (i.e. for
3216        - GM_VISBECK_VARIABLE_K
3217        - GM_NON_UNITY_DIAGONAL
3218        - GM_EXTRA_DIAGONAL
3219        - GM_BOLUS_ADVEC )
3220      * However, wrong gradient check problem remains unsolved.
3221      * New CPP options have been introduced for different
3222        tapering schemes
3223    o external_fields_load now part of differentiation list
3224    o pressure needs multiple storing;
3225      would be nice to have store_pressure at beginning or
3226      end of forward_step, e.g. by having phiHyd global (5-dim.)
3227      (NB: pressure is needed for certain cases in find_rho,
3228      which is also invoked through convective_adjustment).
3229    o recomputations in find_rho for cases
3230     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3231    o #define ATMOSPHERIC_LOADING should be differentiable
3232    o ini_forcing shifted to begining of initialise_varia
3233    o Incorporating QNVS line search routines into MITgcm
3234      (this is separate code, and therefore not under pkg)
3235      lsopt/, optim/
3236    o Updated verification/carbon/
3237      - #define GM_VISBECK_VARIABLE_K
3238      - GM_taper_scheme    = 'ldd97'    
3239    
3240    checkpoint46n_post
3241    Merging from release1_p8:
3242    o verification/natl_box:
3243      updating new external_fields_load routine
3244    o New package: pkg/seaice
3245      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3246      The sea-ice code is based on Hibler (1979-1980).
3247      Two sea-ice dynamic solvers, ADI and LSR, are included.
3248      In addition to computing prognostic sea-ice variables and diagnosing
3249      the forcing/external data fields that drive the ocean model,
3250      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3251      The implied surface heat flux is then stored in variable
3252      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3253      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3254      non-local transport term.  Because this call precedes model
3255      thermodynamics, temperature under sea-ice may not be "exactly" at
3256      the freezing point by the time theta is dumped or time-averaged.
3257      N.B.: fairly large differences in accuracy occur across
3258            different platforms/compilers; comparison between
3259            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3260            generated output gives:
3261       T           S           U           V
3262      C D M    c        m  s        m  s        m  s        m  s
3263      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3264      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3265      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3266    
3267      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3268    o GAD:
3269      - generated new common blocks to account for call of
3270        same gad routines with differing traceridentities
3271        (needed to modify tracerIdentity indices in GAD.h)
3272      - generated separate common blocks for case useCubedSphereExchange
3273        (Department of Futurology)
3274      - parameter lists to gmredi_?transport: added tracerIdentity
3275      - added new key indices to tamc.h
3276    o external_fields_load:
3277      - added this routine to TAF list
3278      - needed to make some common blocks global and additional storing
3279        along the same lines as exf package (checkpoint_lev?_directives.h)
3280    o exf:
3281      updated external forcing package
3282      - bug fixes carried over from ecco-branch
3283        (missing OBCS_OPTIONS.h in two routines)
3284      - enable easy to use "no forcing".
3285      - added exf I/O for atmospheric loading
3286      - added exf I/O for runoff data
3287      - transfered scaling between exf <-> MITgcm to exf namelist
3288    o Adding new verification experiment global_with_exf.
3289      This verification experiment is almost identical to the
3290      global_ocean.90x40x15 experiment, except that it uses
3291      the exf (and cal) package instead of the
3292      external_fields_load routine (cf README file).
3293    
3294    checkpoint46m_post
3295    o modified testscript to return -- when there are no lines of "%MON" output
3296    o added new flag "quasiHydrostatic" for QH mode
3297      and new routine quasihydrostaticterms()
3298    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3299      New routine: mom_u_coriolis_nh()
3300    o fixed sign of non-hydrostatic metric terms in u and v equations.
3301      Depend on correct sign of gravitySign.
3302    o added work.pc* to .cvsignore in aim directories using ifc
3303  o introduced flag for controllin non-hydrostatic metric terms  o introduced flag for controllin non-hydrostatic metric terms
3304  o removed gravitySign from PARM04  o removed gravitySign from PARM04
3305  o switched to g77/ifc from pgf77 in aim experiments  o switched to g77/ifc from pgf77 in aim experiments

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