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revision 1.167 by heimbach, Tue Jun 24 18:27:09 2003 UTC revision 1.1010 by jmc, Tue Jul 29 18:42:35 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    checkpoint61a
8    o exch2/matlab-topology-generator:
9      fix bug in index bounds for N-S internal exchange (hard to tell if this
10      had any effect on the solution).
11    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
12      is exceeded
13    o testreport: modify syntax of awk, so that it works also with
14      awk, and not only with nawk and gawk
15    
16    checkpoint61
17    o autodiff
18      Change default for TAF usage by removing argument '-nonew_arg'
19      This changes TAF subroutine argument list (ordering of active var.)
20      Omission of this flag leads to incompatibility w.r.t. TAMC
21      To restore TAMC-compatibility, need following modifs:
22      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
23      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
24      Tested TAF version is 1.9.22
25      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
26    
27    checkpoint60
28    --->>> This is the last checkpoint for which generating the adjoint
29    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
30    --->>> by default.
31    --->>> Future checkpoints will ommit this flag by default.
32    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
33    o pkg/grdchk: Add gradient check to etan0 perturbations.
34    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
35    o pkg/autodiff: more flexibility in zeroadj.
36      model/src: modifying do_oceanic_phys.F accordingly.
37    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
38    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
39      special setup of gmredi for which the adjoint is stable
40      enough for parameter optimization.
41    o bridging the gap between eddy stress and GM.
42      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
43          along with a change in CPP option (now ALLOW_EDDYPSI).
44      -> when using GM w/ GM_AdvForm:
45          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
46          is applied either in the tracer Eq. or in momentum Eq.
47          depending on data.gmredi (intro. GM_InMomAsStress).
48      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
49      The key modifications are in model/src/taueddy_external_forcing.F
50      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
51    
52    checkpoint59r
53    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
54      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
55      fix option to read coriolis(@ cell-corner) from files with CS-grid.
56    o pkg/mnc: add some attributes to standard 1D-coordinate variables
57    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
58      mass points, when using mnc for output
59      - add runtime parameter (missing_value, missing_value_int) to override
60        default (which is the value of getcon('UNDEF'))
61    o pkg/mnc: prepare mnc for the actual use of missing values with the
62      diagnostics package: small fix in mnc_cw_readwrite.template and more
63      initialisation of never used fields
64      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
65      versions
66    o pkg/thsice/thsice_ini_vars.F added default initial values so that
67      thermodynamics sea ice solver does not blow up when some initial fields
68      are missing.
69    o move from external_forcing_surf.F to ini_forcing.F
70      the p-coord. hack consisting in using pLoad to set phi0surf ;
71      update output of tutorial_global_oce_in_p (affected @ truncation level).
72    o Freshen up a bit hs94.1x64x5, notably:
73      remove rotationPeriod and tRef=5*0. (adjoint only), and add
74      exactConserv=.TRUE.
75    o pkg/generic_advdiff:
76      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
77      applies to files where Temperature & Salinity 2nd Order moments are used.
78    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
79      this uses a dynamically allocated internal state data structure
80      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
81      and requires a fortran 90 compiler
82    
83    checkpoint59q
84    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
85       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
86    o Refresh tutorial_global_oce_biogeo, notably:
87      - change bathymetry (put back seamounts in ACC, use hFacs)
88      - change EOS (POLY3 --> JMD95Z)
89      - use Bryan-Lewis vertical diffusivity
90      - use multidimensional advection
91      - remove old virtual virtual in dic pkg, now done through ptracer pkg
92      - change a couple of parameters in dic pkg
93    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
94    o pkg/obcs: change default to OBCSfixTopo = .true.,
95      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
96      - replace "debugMode" with "debugLevel .GE. debLevB"
97    o implementation of TAF directives for gchem,cfc,dic
98    o remove "exp5" (replaced by tutorial_deep_convection).
99    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
100      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
101      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
102      --> changes results in exp4, seaice_obcs
103    o tutorial_deep_convection :
104      update the set-up and increase resolution and domain size ; start
105      from pseudo initial conditions = output at t=120mn in order to see
106      something happening when running testreport.
107    o pkg/seaice: add os7mp as an advection scheme
108                  add check for advection schemes
109                  add a flag for restoring T and S underneath sea ice
110    o pkg/my82: add netcdf-support and diagnostics
111    o thsice pkg:
112      - Now hsMax limits snow height by turning it into ice following
113        flooding scheme (and now conserving energy)
114      - Slight rewriting of the formula in thsice_calc_thick.F
115      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
116      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
117    
118    checkpoint59p
119    o gchem / dic / cfc :
120      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
121      - add new parameter files: "data.dic" & "data.cfc" ;
122      - various re-arrangement in initialisation & header file ;
123      - fix tutorial_global_oce_biogeo for multi-threaded test.
124    o pkg/dic: test for "pickup_dic" file when restarting ;
125      if no pickup-file, can restart with a re-initialised pH (same as it did
126      before) providing pickupStrictlyMatch is set to False.
127    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
128      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
129    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
130      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
131    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
132     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
133       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
134    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
135       scheme to use for vorticty-term ;
136     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
137       (with default selectVortScheme, return to original discretisation)
138     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
139    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
140    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
141      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
142      also fix diagnostics VISCAHW & VISCA4W.
143    
144    checkpoint59o
145    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
146    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
147      move a few statemens out the main loop into separate loops
148    o pkg/shelfice:
149      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
150        (kg/m^2/s), does not break tests, because in verification/isomip,
151        rhoConstFresh=rhoConst (by accident)
152      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
153      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
154        new file model/src/seawater.F, so that they are available for all pkgs.
155      - convert potential temperature into in-situ temperature. This changes the
156        isomip tests => update tests
157    o add a flag writePickupAtEnd (default=true) to be able to suppress
158      writing a pickup at the last timestep
159    o tools/mpack-1.6 :
160      - disable automake (not working) and autoconf (not needed).
161      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
162        also cleaner with much less compilation warnings.
163    o pkg/profiles:
164      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
165      (for "less than 32 characters name" compiler requirement)
166    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
167      conditions that have a different sampling frequency than S/T/U/V obcs
168    o pkg/diagnostics (stats-diags):
169      - fix global Min/Max in case 1 processor get only empty tiles
170    o genmake2: replace (4 times)
171         make genmake_tc_1.o >> genmake_warnings 2>&1
172      with
173         COMM="$CC $CFLAGS -c genmake_tc_1.c"
174         echo $COMM >> genmake_warnings
175         $COMM >> genmake_warnings 2>&1
176      to make genmake2 always see the value of CC as specified in the optfile.
177    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
178      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
179      - modify verification advect_cs test to test SOM-advection on CS-grid.
180    o pkg/ctrl:
181      - Rewrite of ctrl_map_ini_ecco.F,
182        introducing a generic routine (ctrl_map_ini_gen.F).
183      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
184    
185    checkpoint59n
186    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
187      number in dedicate array "hdiag":
188      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
189        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
190      - many small changes (integer format) for large number of diagnostics
191      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
192        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
193    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
194      usingSphericalGrid, this allows to define the rotated grid coordinates
195      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
196      geographical coordinates according to the inverse of the rotation defined
197      by the Euler angles, so that Coriolis parameter and online-interpolation by
198      exf works with the geographical coordinates on XC/YC/XG/YG.
199      Naturally, this feature does not work with all packages, so some
200      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
201      profiles), because there the coordinates are assumed to be regular
202      spherical grid coordinates.
203    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
204      - introduce isopycnal diffusion coefficient control.
205    o tools/adjoint_options:
206      - additional control vector components.
207    o pkg/mnc: have mnc create marginally meaning full coordinate variables
208      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
209    o pkg/mypackage:
210      - add example of read/write pickup for state-var ;
211      - add entry points to the main code for state-vars diags & write-pickup.
212    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
213      transitions for useExfYearlyFields
214      - add new subroutine that determines the file to read from for
215        use*YearlyFields = .TRUE. and .FALSE.
216      - add a verification experiment to global_with_exf that tests
217        useExfYearlyFields with USE_EXF_INTERPOLATION defined
218    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
219      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
220      subroutines (which could be generated from a template, because they are
221      almost identical), for now they are included in obcs_prescribe_read.F for
222      simplicity
223    o pkg/exf:
224      - add a little more diagnostic to exf_interp_read (in analogy to
225        mds_read_field, can be turned off with debugLevel < debugLevA=1)
226      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
227        ugly but fast by unrolling short inner loops, inserting a unroll=8
228        directive in routine lagran, and splitting a loop and making do while the
229        outermost loop (the latter requires the intoduction of index arrays)
230    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
231    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
232      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
233    o verification/seaice_obcs: updated for restart test and latest options
234    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
235      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
236      for now this is only available for the C-grid code and also within
237      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
238    
239    checkpoint59m
240    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
241      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
242    o gad_som : fix flux output (& diagnostics) to have same units as other  
243      advection scheme fluxes (was previously multiplied by deltaT).  
244    o added verification/seaice_obcs both to test seaice open boundaries
245      and to provide an example matlab scrpt for generating them
246    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
247    o pkg/salt_plume: clean up salt_plume_frac.F to
248      remove redundancy in PlumeMethod 1 and 4
249    o pkg/kpp: added saltplume diagnostics
250    o pkg/obcs and pkg/seaice:
251      - do not set uice and vice to zero when OB*icefile are unspecified
252      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
253      - moved seaice tracer obcs after call to seaice_growth
254    o pkg/salt_plume: added various options for salt plume depth
255      criterion and for vertical distribution of the salt
256    
257    checkpoint59l
258    o pkg/ptracers: new version of ptracers pickup:
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:
262      - add timescale for melting due to warm mixed layer as a means of
263        setting SEAICE_availHeatFrac more conveniently
264      - add a CPP-flag/runtime parameter check for flooding algorithm
265      - reformulated availHeat in seaice_growth.F to be independent of AREA
266    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
267      unit changes
268    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
269    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
270      SX vector computer.
271    o pkg/seaice:
272      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
273        seaice forcing fields can now be read only through pkg/exf
274      - removed some unused halos
275    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
276    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
277      or U/VICE from U/VWIND before computing U/VSTRESS
278    
279    checkpoint59k
280    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
281      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
282    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
283      all experiments pass when compile with un-initialised var. checking option.
284    o added pkg/salt_plume
285    o script to test restart (for now, in MITgcm_contrib/jmc_script)
286    o pkg/seaice: new read/write pickup version.
287      read meta file and write only fields which are needed to restart.
288      ( same logic as main pickup file ; also using pickupStrictlyMatch )
289    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
290    o lab_sea.hb87: modify the domain & update output.hb87.txt :
291      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
292      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
293      process. Fixed here by closing the domain at the Northern boundary.
294    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
295    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
296      a set of consecutive levels in/from a 3-D array.
297    o pkg/ptracers:
298      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
299      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
300    
301    checkpoint59j
302    o in pkgs: dic, obcs, offline, rbcs:
303      standard way to compute coeff. for time interpolation between 2 time reccords
304      which retains full precision (& make results less dependent on compiler).
305      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
306    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
307      packages instead of reading ice cover and wind speed separately
308    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
309     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
310      to allow to compile customized code before the update)
311    o cleaning-up:
312      - fix CPP instruction syntax in pkg/obcs
313      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
314        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
315      - fix some threads issue in IO parts.
316    o pkg/dic:
317      - add tons of "_d 0" (--> much better testreports !)
318       and then update outputs of tutorial_global_oce_biogeo
319    o pkg/mom_fluxform:
320      add a special version of momentum advection intended to conserve momentum
321      next to a bathymetry step or a coastline edge. (default = off = #undef)
322    o new read/write pickup version:
323      - for now, only implemented for main (mdsio) pickup file.
324      - write out only what is needed to restart; merge pickup_nh , pickup_ph
325        and main pickup together.
326      - read meta file; read only what is needed to restart; stop if a field
327        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
328        if it make sense (even if the restart is not perfect).
329      - if no meta file, assume that pickup to read corresponds exactly to
330        a pickup that would currently be written.
331      - read pickup written in the old format (until checkpoint59i) if it
332        recognizes an old meta file (no field-list).
333      - add a meta file in exp. which starts from a pickup: 2 cases:
334        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
335         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
336        b) a meta file describing the content of the associated pickup file
337         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
338    o pkg/mdsio & pkg/rw:
339      - new routine to read a meta file ; new set of routine to read
340        Multiple-fields file (with meta file).
341    o added open boundary conditions capability for seaice
342        HSNOW, HSALT, UICE, and VICE
343    
344    checkpoint59i
345    o adjoint:
346      * fix multiDimAdvection adjoint
347        (partial recomputation problem by TAF for fVerT(:,:,kDown)
348        and comlev1 size definition (maxpass vs. max. number of tracers)
349      * verification/global_ocean.90x45x15 adjoint now tests
350        NLFS and multiDimAdvection using DST3 (=30)
351      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
352    o pkg/kpp: add "_d 0" to real constant (if missing);
353      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
354      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
355    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
356      for internal parameters related to restart process (formerly from PARAMS.h)
357      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
358    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
359      as argument. (only atm2d & obcs write_pickup have not yet been updated)
360    o pkg/monitor:
361      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
362      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
363      - account for deep Atmosphere factor and density factor (anelastic)
364    o added open boundary conditions capability for seaice HEFF and AREA
365    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
366      thermodynamics
367      - requires a little reorganization, which affects the testreport results
368        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
369        so that now the conservative form is tested
370      - add a few comments
371    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
372    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
373    o add new diagnostics to seaice: advective, diffusive fluxes (only for
374      multidim-advection, for scheme 2 they are not filled) and transports,
375      thermodynamic growth rates
376    o change units of EmPmR (inside the code, + within coupling interface)
377      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
378      Affects results @ truncation level (cg2d match) and update output of
379       experiments: lab_sea(6), global_ocean.90x40x15(10),
380      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
381      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
382      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
383      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
384    
385    checkpoint59h
386    o pkg/exf:
387      - improve vectorization by moving if-statement out of loops in
388        exf_mapfields, exf_radiation
389      - exf_bulkformulae.F: introduce 2D fields and vectorize code
390    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
391    o testreport:
392      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
393        monitor & update offline_exf_seaice exp. output.
394      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
395    o pkg/seaice:
396      - bug fix in the evp solver: boundary conditions were affected be
397        masking of zMax/zMin (changes results)
398      - minor bug fix in boundary conditions in seaice_calc_strainrates
399        (changes results for no_slip)
400      - seaice_lsr.F: make interpolation of eta dependent on boundaries
401      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
402      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
403        stress formulation and no-slip boundary conditions
404    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
405      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
406    o pkg/seaice: a first HSALT time stepping equation has been checked in
407    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
408      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
409      without requiring DO-IF statements
410    o pkg/thsice:
411      use continuous power-law function for partition of energy between lateral
412      melting/freezing and thinning/thickening ; old code using step function
413      still available with #undef THSICE_FRACEN_POWERLAW
414      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
415    o testreport: change AD testing : check against results/output_adm.txt
416      using same scripts as for forward test.
417    
418    checkpoint59g
419    o adjoint testing: in preparation for changing testreport:
420      - output format: cost and grad written on separated lines
421      - ad output results in directory "results" (instead of "results_ad")
422    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
423    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
424    o pkg/ecco: allow user defined cost function contributions
425    o testreport:
426      Allow to choose (per experiment) the list of tested output variables
427       and the main variable (used to issue a pass/FAIL ) ;
428      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
429      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
430      Also modify printing of summary:
431       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
432       b) echo the list of tested variables in the individual summary.txt of
433          each experiment.
434    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
435      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
436      (but still depend on the tile decompostion of the domain).
437    o pkg/seaice: change a discretization detail to make the B-grid code
438      "more symmetric". This change is likely to remove all "ridges/leads" that
439      where quasi-aligned with the grid in B-grid solutions. It may also be
440      the solution to the stress coupling issues with the B-grid.
441    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
442      remove .cvsignore from input dir. (since testreport no longer run here).
443    o pkg/thsice:
444     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
445     - fix reshaping of sea-ice just after advection:
446       melt all the ice only if ice-volume is too small.
447     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
448       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
449     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
450    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
451      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
452    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
453      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
454      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
455      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
456      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
457      -> update output.txt
458    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
459     this affects truncation error: -> update output.txt of exp:
460      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
461      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
462    
463    checkpoint59f
464    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
465    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
466      a bounded range (in forward mode)
467    o pkg/ecco, ctrl, autodiff and mom_common:
468     internal parameter controls, completements of implementations
469    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
470    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
471      (not seem any difference in testing results).
472    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
473       at face corners.
474    o pkg/generic_advdiff:
475     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
476      loop range indices for computing vertical advection tendency
477      and do the calculation in the interior only (no overlap) ;
478      for now, only implemented for SOM advection (to save CPU time).
479     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
480    o exch2 adjoint
481      First set of changes:
482      - add exch2 hand-written adjoint templates
483      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
484        This will require cleanup in pkg/autodiff/*.F
485        (changed routines currently kept separate in verif. code/)
486      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
487        that used to hide exch2 or cubed-sphere specific code
488        (commented via 'cph-exch2')
489    o pkg/seaice
490      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
491    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
492       output of global_ocean.cs32x15.thsice .
493    
494    checkpoint59e
495    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
496      for B-grid vector (not yet tested) and C-grid vector (<- only used
497      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
498    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
499      (#ifdef ALLOW_SALT_PLUME)
500    o gather_2d/scatter_2d: removed halo regions
501    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
502      scheme and the corresponding test case (under front_relax dir). For now,
503      only available with Skew-flux form and not yet tested in realistic set-up.
504      adjoint: store directives updated, but gradient checks deteriorated,
505      so maybe GM/Redi adjoint is now broken.
506    o seaice adjoint
507      * add AREA, HEFF, HSNOW as control variable
508        (should not change lab_sea results)
509      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
510    o pkg/seaice:
511      * added computation of saltFlux in seaice_growth;
512        For time being, sea ice salinity is assumed constant
513        contribution of snow flooding to freshening of sea ice is neglected.
514        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
515        defaults to 0.0 in order to maintain backward compatibility.
516        Typical values for SEAICE_salinity are 4 to 10 g/kg.
517      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
518      * added SEAICE_availHeatFrac, which specifies fraction of surface level
519        heat content used to melt or grow ice
520      * commented out cap of HICE: it helps keep ice thinner
521      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
522      * applied OBCS T/S mask to HEFFM sea ice mask
523    
524    checkpoint59d
525    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
526     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
527     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
528    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
529     and change default value of parameter "GM_Small_Number";
530     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
531       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
532       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
533    o pkg/ecco: cost function when applying pkg/smooth to controls
534    o pkg/ctrl: add forcingPrecond run time parameter
535    o pkg/seaice:
536     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
537     - fix bug in metric terms of u-equation in LSR solver (implicit part),
538       changes verification/lab_sea
539     - rearrange implicit part of u-equation in LSR solver to make it easier to
540       read, understand, and debug. This causes changes at the truncation level.
541     - fix (serious) bug in the boundary conditions (sign error in the implicit
542       part) of the LSR solver. Changes all LSR results.
543     - fixed problem with HSNOW initialization to avoid thick snow when AREA
544       is initilized with small values - does not change lab_sea results.
545     - added HsnowFile initialization capability
546    o pkg/smooth: addition to model/src and pkg/ctrl so allow
547     initialization of pkg/smooth and application to control vector
548    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
549    o dependencies: pkg/profiles requires pkg/cal
550    o pkg/profiles:
551     - added option ALLOW_PROFILES_GENERICGRID
552         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
553         that interpolation information (grid points and coefficients) is provided
554         within the netcdf input files.
555         -> sample matlab scripts can be found in MITgcm_contrib/gael
556         that allow you to prepare netcdf input files.
557     - also modified: cleaner include statements, cleaner error print statements,
558       cleaner stops when error, and more tests of the netcdf input files consistency.
559    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
560    o pkg/seaice:
561     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
562       requires a new routine: seaice_diagnostics_fill.F
563     - make sure that seaice does not move if not forced (pressure replacement
564       method, Hibler and Ip, 1995), changes results
565     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
566     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
567       It is turned off by default (=-1.), because it changes the results.
568     - make it possible to read AREA from a file, too.
569    
570    checkpoint59c
571    o add S/R and diagnostics for oceanic mixed-layer depth
572    o move GMRedi call after all vertical mixing schemes (including KPP)
573    o pkg/thsice:
574     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
575      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
576    o pkg/obcs:
577     - bug fix for balance code
578    o pkg/seaice:
579      - allow values of SEAICE_elasticParm > 1
580      - add new parameter SEAICE_evpTauRelax as an alternative
581        to SEAICE_elasticParm
582      - make lsr boundary conditions free slip (by default), changes result
583      - add code for no slip boundary conditions for lsr
584      - set minimum of zeta to zero (and not 4e8) (changes results)
585      - add a cap on AREA after advecting AREA if seaice_growth is not called
586    o change calculation of Visbeck K:
587      - no longer depend on tapering scheme; instead, compute slope (limited
588        by GM_maxSlope). this is equivalent to what was comuted before with
589        clipping or linear tappering.
590      - fix vertical averaging (wrong by 1/2 level)
591      - leave the old version (but will not be maintained) within
592        #ifdef OLD_VISBECK_CALC / #endif
593      - update output of exp. ideal_2D_oce
594    o change error catch in calc_r_star to improve vectorization
595    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
596      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
597    o adjoint:
598      Re-organized adjoint checkpointing according to Matt Mazloff
599      (but with modifs/completions/cleanups)
600      Storing is now bundled into large arrays to optimized I/O
601      (and second step in cleanup of the_main_loop)
602    
603    checkpoint59b
604    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
605      - export/import (between ocean & coupler) fields needed for ocean DIC.
606    o pkg/seaice:
607      - get rid of three more exchanges seaice_calc_viscosities (required
608        different loop boundaries in seaice_lsr and seaice_ocean_stress)
609      - bug fix in seaice_ocean_stress (update of lab_sea required)
610      - reduce loop boundaries to necessary minimum also in seaice_evp
611      - go back to the old way of computing deltaC/Z as the adjoint likes that
612        better
613    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
614      passive tracer to an Age Tracer) + update output.txt
615    o pkg/exf:
616      - implement A-grid / C-grid selection for wind-stress input files.
617      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
618      for now, in exf_bulk_largeyeager04.F only :
619      - change implementation for case where windspeed + 2. components wind-stress
620        are read-in. AND use rhoConstFresh to convert evap.
621    o pkg/seaice:
622      - use correct EXCH_UV for wind-forcing (on A-grid).
623      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
624        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
625    o pkg/exf:
626      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
627      EXF_INTERPOLATION:
628      - merge global_with_exf/code version of exf_interp_read.F
629        to the main code ;
630      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
631        reading the file ; Important: This options needs to be defined to recover
632        previous code.
633        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
634      - no longer loose real*8 precision along the way when using exf_iprec=64.
635    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
636      - change discretisation of evp-solver in order to avoid another exchange
637        (changes lab_sea) and clean up a little
638      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
639        help the adjoint (this also changes the results slightly)
640      - add a few "_d 0" where they had been missing in seaice_evp.F
641      - cleaning up: remove unused seaice_calc_rhs.F
642    o pkg/exf: some cleaning-up:
643      - change various "constants" into runtime parameters
644      - cleaned-up Large&Yeager04 routine which should eventually
645        replace exf_bulkformulae.F (changed names of S/R and CPP)
646        and merged various ALLOW_ATM_WIND options
647     only used with thsice pkg (in thsice_get_exf.F):
648      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
649        which are used when useStabilityFct_overIce=TRUE (= the default)
650      - change default values of ice & snow emissivity and scale downward LW
651        by ice & snow emissivity.
652    o pkg/thsice:
653     fix few little problems, in thsice_calc_thickn.F:
654      - growth vertically (and not laterally) if iceFrac == iceMaskMax
655      - melt only laterally if hIce < hThinIce (as the comments say)
656      and in thsice_extend.F:
657      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
658      - start to form ice as soon as the minimum ice-volume is reachable.
659     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
660      and cpl_aim+ocn
661    o pkg/kpp
662     - move computation of surface related input fields to KPP into a new
663       subroutine kpp_forcing_surf.F
664     - remove wrong (within bi,bj loops) EXCH calls.
665     - little cleaning (add argument myThid in last position, cvs header ...)
666     - for now, fix conservation problem by exchanging KPPviscAz (may not
667       be the best fix)
668    o pkg/seaice
669     - check for inconsistent evp parameter/cpp-flag combination
670     - remove leftover errIO flat for obsolete name list error handling
671    o OpenAD
672     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
673    
674    checkpoint59a
675    o pkg/seaice: some parameter clarifications and a little bit of clean up
676    o pkg/thsice: rename run-time parameters:
677       himin       -> hIceMin
678       himin0      -> hThinIce
679       hihig       -> hThickIce
680       i0          -> i0swFrac
681       transCoef   -> bMeltCoef
682       frac_energy -> fracMelting
683      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
684       with default values (for now) that do not change the results.
685      remove old version of thsice vars advection in pkg/seaice.
686    o in FFIELDS.h:
687      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
688      - make pLoad & sIceLoad always available (but still only used if
689         ATMOSPHERIC_LOADING is #define).
690    o pkg/kpp: replaced _KPP_RL with _RL
691    o bug fixes for vertical diffusivity computations when both KPP and
692        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
693        are no longer updating the vertical diffusivity array
694        (passed as argument) but are (re-) setting those arrays.
695    o pkg/seaice: fix bug in evp solver, while doing that
696      - change (improve?) discretization of stress computations for both
697        cgrid-lsr and evp solver
698      - add a new routine to compute strain rates
699      - the above changes lab_sea results
700      - add no slip conditions for evp solver (off by default), lsr-version
701        may follow
702      - fix exchange for shear at Z-points (does not change lab_sea)
703      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
704        (to force the user to pick a time step since there is not "safe" way
705        of choosing it)
706      - add principal stress diagnostics
707      - rearrange fields for evp a little to avoid having to call a: too many
708        exchanges and b: exchanges for stress trensor components which we do
709        not have.
710      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
711        of evp, complete rewrite for lsr case (latter is does not yet work
712        in all cases)
713    o pkg/kpp: add code to have mixing in shelf ice caverns
714      - add myThid to all kpp routines (long overdue)
715    
716    checkpoint59
717    o pkg/exf:
718      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
719        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
720      - move exf header files from lower_case.h to UPPER_CASE.h ;
721        add missing cvs Header & Name
722      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
723      - add namelist param. selectStressGridPosition, exf_monFreq
724      - retire many _CLIM routines, and remove data.exf_clim
725        + params moved to data.exf
726        + climsst, climsss now handled by exf_set_gen, i.e.
727          climss?period=0 refers to constant field,
728          climss?period=-12 to monthly forcing
729      - split up namelists in data.exf
730    o pkg/seaice:
731      - remove seaice_exch and seaice_exch_uv
732      - remove superfluous exchange of theta
733      - add myThid to seaice_budget_ocean/ice
734      - add new interface for atmospheric wind forcing (C-grid only)
735        + new routine
736        + two new field (taux, tauy for stress over ice)
737        + removed one global field (DAIRN) for C-grid case only
738    o pkg/thsise
739      - 2nd set of modifs for thsice adjoint in conjunction with exf
740    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
741    
742    checkpoint58y_post
743    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
744      vertical diffusivity, similar to that in MOM4; turned on using
745      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
746      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
747    o Added capability for 3D specification of background vertical diffusion
748      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
749      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
750      "data" file that contains the 3D vertical diffusivity coefficients.
751    o ice dynamics (pkg/seaice) with thsice thermodynamics:
752      - add code within pkg thsice to advect & diffuse sea-ice fields
753      similar to (and will replace) what has been added in  seaice_advdiff.F,
754      but: - conserving Mass, Heat & Salt.
755           - better when using non-linear advection scheme (not yet fully tested)
756           - can also be used in atmospheric set-up (for now, only the diffusion).
757    
758    checkpoint58x_post
759    o IO option for global-file compact format:
760      - add options when generating topology (utils/exch2/matlab-topology-generator)
761      - add I/O capability (pkg/mdsio).
762      - adapt utils/matlab/rdmds.m to read this format.
763      for now long-line format not yet supported by pkg/mdsio (& exch2).
764    o shelfice: add a few diagnostics
765    
766    checkpoint58w_post
767    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
768      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
769      (and replace horiVertRatio in NH code).
770      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
771                         and tutorial_plume_on_slope (sensitive to truncation)
772    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
773      directly to drive seaice model (C-grid only)
774    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
775     - reintroduce computation of wind from stress,
776     - compute tau (in exf_bulkformulae.F) from windstress averaged to
777       mass points to avoid tau = 0
778     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
779    o rdmnc.m: make it work with "global" files created with gluemnc
780    o rdmnc.m : some improvements in dealing with singleton dimension
781      (tested on all testreport mnc output files).
782    o genmake2: disable pkg/profiles if netcdf test fails.
783    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
784    o move call to cal_readparms up to make calendar parameters/variable available
785      to all packages
786    
787    checkpoint58v_post
788    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
789      useDynP_inEos_Zc tested.
790    o pkg/exf: changes to properly interpolate/mask/scale initial fields
791    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
792      and portions thereof.  See read_cs.txt for description and examples.
793    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
794      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
795      following the great-circle arc between those 2 points.
796    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
797      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
798    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
799     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
800     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
801     - still needs work (not working with some options ; efficiency to improve)
802       and serious testing.
803     - use this scheme for temperature & salinity in 2 advection test exp.:
804       advect_xy & advect_xz, respectively.
805    
806    checkpoint58u_post
807    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
808    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
809    o testreport: add option "-skipdir" to skip some test.
810    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
811      momentum calculation.
812    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
813    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
814      remove checkpoint.F and the_correction_step.F (no longer used);
815      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
816    o add option (linFSConserveTr) to correct for tracer source/sink due to
817      Linear Free surface
818    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
819    o pkg/thsice: fix reading mnc-pickups
820    
821    checkpoint58t_post
822    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
823    o pkg/mdsio:
824     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
825       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
826       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
827     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
828     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
829       either MDS_READ_FIELD or MDS_WRITE_FIELD )
830     - new S/R (to replace MDSWRITEMETA), which allows to write more
831       informations (variable names, time ...) to meta files.
832     - modify rdmds.m to give back the meta file content.
833    o pkg/diagnostics: change vertical interpolation to be safer, and more
834       flexible (define p-levels to interpolate to in data.diagnostics);
835      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
836       diagnostic pointer.
837    o pkg/seaice: more cleaning up of seaice_growth, added many comments
838    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
839    o fix multi-category seaice:
840     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
841       SEAICE_MULTICATEGORY
842     - fix short wave heat flux
843    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
844       and allow to use EVP solver. Change forward lab_sea: test both EVP
845       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
846    o Initial check-in of lab_sea adjoint
847      (very similar to natl_box_adjoint/code_seaice)
848      * used C-grid and EVP solver
849      * used KPP, GM/Redi
850      * uses inAdExact=.TRUE.
851      * gradient checks fail for both ADM and TLM
852        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
853        f.d. gradients actually seem more problematic than ADM, TLM gradients;
854        issue is related to forward mismatch between g77 an ifort
855    o pkg/seaice: overhaul of thermodynamics
856     - growth.F and groatb.F are replaced by new routine seaice_growth.F
857     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
858     - move a few global fields out of SEAICE.h into seaice_growth.F and
859       make them 2D (FICE/QNETO/ ...)
860     - remove FO (it is the same as QNETO)
861     - introduce a few local fields to avoid modifying external fields such
862       as atemp, etc.
863    
864    checkpoint58s_post
865    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
866      changed exf_set_gen.F so that
867        genperiod=0 means input file is one time-constant field and
868        genperiod=-12 means input file contains 12 monthly means
869    o CG2D: use pre-computed solver main-diagonal (stored in common block);
870      this affects truncation error ; generate new output file for exp. which
871      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
872        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
873        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
874        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
875        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
876        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
877    o start implementation of deep-atmosphere and anelastic formulation
878    o verification: remove 2nd copy of input files and use script "prepare_run"
879      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
880    o mom_common/vecinv/fluxform: fix a few initialisation isssues
881    o profiles: fix for multithreaded case
882    
883    o diagnostics: rename few diags:
884      s/'PRESSURE'/'RCENTER '/g
885      s/'TICE    '/'oceFreez'/g
886      s/'TAUX    '/'oceTAUX '/g
887      s/'TAUY    '/'oceTAUY '/g
888      s/'SWFLUX  '/'oceQsw  '/g
889      s/DIFx/DFxE/g
890      s/DIFy/DFyE/g
891      and add few ocean-forcing diagnostics:
892      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
893    o modifications to pkg/seaice/growth.F and budget.F, which change results of
894      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
895      as actual snow thickness.  It now refers everywhere to effective snow
896      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
897    
898    checkpoint58r_post
899    o modifications to pkg/seaice/growth.F, which change results of
900      lab_sea experiment: fixes pertain to melting snow over open water, to
901      masking EVAP under sea ice, and to using the correct AREA variable for
902      computations of EVAP, PRECIP, HSNOW, and GHEFF
903    o add ability to read bathy, salt, and theta using MNC (off by def)
904    o add flooding algorithm and advection of HSNOW for pkg/seaice;
905      both are turned off by default and do no change any results
906    o seaice advection with pkg/thsice: a step toward the use of non-linear
907      advection scheme, but #ifdef or commented out for now (requires more EXCH).
908    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
909      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
910      in natl_box (affects results @ truncation level: update output.txt)
911    o multi-threading and IO:
912      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
913      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
914        (needed to work with SingleCpuIO): tested in all verif. exp.
915    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
916      affects the results (but none of the verification test uses this scheme).
917    o Adding some pkg/diagnostics capability to pkg/seaice
918      (will certainly be subject to changes)
919    o ctrl: adding new control variables:
920      lwflux, lwdown, evap, snowprecip, apressure, runoff
921    
922    checkpoint58q_post
923    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
924      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
925      high_res_cube configuration by 4% on Columbia.
926    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
927      add (in global_with_exf/code) a version of EXF_INTERP_READ without
928      dynamical allocation (seems to work in multi-threaded).
929    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
930      single CPU io) so that TAF does not have to see EESUPPORT.h
931    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
932    
933    checkpoint58p_post
934    o obcs: stop if obcs is used with useCDscheme = .true.
935    o shelfice:
936     - fix a sign error so that no slip at shelfice interface works
937     - remove stop for combination non-hydrostatic code and shelfice. That does
938       not mean, that the results are correct, but at least they are numerically
939       stable
940    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
941    o added adjoint exch routined for all exch*3d* routines
942      and updated flow directives
943    
944    checkpoint58o_post
945    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
946      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
947    o change controling S/R for writing pickup file (new S/R do_write_pickup)
948      and clean-up reading/writing of pickup files.
949    o fix local version of read/write pickup (NH part) in rotating_tank/code
950    o simplify EXCH interface:
951     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
952     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
953    o added the regrid package
954    o shelfice:
955     - add a simple boundary layer scheme to reduce noise
956     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
957    
958    checkpoint58n_post
959    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
960       local variable (not in common block).
961    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
962      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
963      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
964        to work with SingleCpuIO.
965    o add "_d 0" to real constant of pkg/cfc subroutines ;
966       update exp. cfc_exemple & tutorial_cfc_offline output files.
967    o multi-threading and IO:
968      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
969        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
970      - barrier before and after reading.
971      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
972      - avoid using MDS_WRITELOCAL for LAND pkg output.
973      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
974        common-block variables ; Allows multi-threading with master-thread IO.
975    o change default MAX_NO_THREADS from 32 to 4 ;
976      and stop cleanly when MAX_NO_THREADS is too small.
977    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
978    
979    checkpoint58m_post
980    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
981       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
982    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
983       keep global_ocean.90x40x15 (for AD testing) with former secondary test
984       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
985    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
986        add MITgcm_tutorials (= code + all the tutorials)
987    o ecco, option to compute cost for total ssh (mean+anom)
988    o consistent with addition of ptracer and ssh in pkg/profiles
989    o profiles: adding ptracer and ssh
990    o testreport: change multi-test output-file name
991      (from output.txt.{name} to output.{name}.txt)
992    o profiles: now ok for mutli-tiles case
993    o seaice: add 4 parameters for different advection schemes for area,
994      (effective) seaice thickness, enthalphy, and snow height. Their default
995      is the standard parameter SEAICEadvScheme
996    o calc_gw:
997     - add cosFacU in zonal viscous flux (harmonic.visc.).
998     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
999       of tutorial_plume_on_slope.
1000    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1001    o calc_gw: true flux-form, account for horizontal grid spacing.
1002      update rotating_tank results, but not plume_on_slope (affected at
1003      truncation level, 11 digits).
1004    
1005    checkpoint58l_post
1006    o calc_gw:
1007     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1008     - remove side-drag for now (need to fix it); update plume_on_slope results.
1009     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1010    o commit code to make SST/SSS weights spatially variable
1011      (based on either variable in-situ or variable initial T/S weights)
1012    o pkg/ecco:
1013      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1014        now based on horizontally varying weights wthetaLev, wsaltLev
1015      * cost_averagesflags now returns year indices in addition to day, month
1016      * sflux balance is performed on annual basis
1017        (sflxumm, sfluxmm2, bal_sfluxmm)
1018      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1019        including separate counting and multipliers
1020    o pkg/rbcs
1021      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1022    
1023    checkpoint58k_post
1024    o testreport:
1025     - always build in dir. "build" (if not there, mkdir build instead of building
1026       & running in input)
1027     - run in dir run (if it exists), in build otherwise.
1028     - call prepare_run (if input/prepare_run exists)
1029     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1030    o pkg/exf modifications to interpolation and rotation routines for more
1031       reasonable treatment of North Pole singularity: for tracers North Pole
1032       value is set to northernmost zonal-mean value, for zonal velocity it is
1033       set to zero, and for meridional velocity it is set to northernmost value.
1034    o pkg/exf/exf_check_range.F
1035     - add tile index to diagnostics and move stop statement to the very
1036       end of the routine.
1037    o pkg/diagnostics: (diagnostics_main_init.F)
1038      define title of isomorphic variables according to the current config.
1039    o pkg/thsice with pkg/seaice dynamics:
1040    - fix domain of computation (interior only, required for exf) and do exchanges
1041    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1042    o towards a standard way of dealing with multi-threading in MONITOR
1043      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1044    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1045       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1046    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1047    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1048    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1049       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1050    o tracer advection:
1051     - clean-up and simplify calc_common_factors.F
1052     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1053       advection subroutine (but still not used within DST advection S/R)
1054    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1055    
1056    checkpoint58j_post
1057    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1058      from file (collects calls previously in FORWARD_STEP)
1059    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1060    o adjoint store dir. adjusted accordingly
1061    o genmake2
1062      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1063    
1064    checkpoint58i_post
1065    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1066      on wind stress (SEAICEstressFactor defaults to 1.)
1067    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1068      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1069    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1070      on CS-grid: no longer loosing mass.
1071    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1072    o pkg/ggl90: fix sloppy output and fix a bug
1073    o pkg/seaice: added SEAICEuseEVPpickup parameter
1074      - Set to false in order to start EVP solver with
1075        non-EVP pickup files when using SEAICEuseEVP
1076      - fix sign error in diffusion in seaice_calc_rhs
1077    
1078    checkpoint58h_post
1079    * Modifications for bottom topography control
1080      o replace hFacC by _hFacC at various places
1081      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1082      o add non-self-adjoint cg2d_nsa
1083      o update autodiff support routines
1084      o re-initialise hfac after ctrl_depth_ini
1085      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1086    * Adding verification for 5x5 box (4-layer) bottom topography control
1087    
1088    checkpoint58g_post
1089    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1090       used for mean seasonal cycle, mean diurnal cycle); add an example
1091       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1092    o pkg/ggl90:
1093      - add parameter (minimum surface kinetic energy)
1094      - fix bug (avoiding division by zero)
1095    o couple pkg/thsice to pkg/seaice:
1096      - modify advection in seaice to accomodate new scalar fields to be advected
1097      - only muliDimAdection scheme work with seaice/thsice
1098      - mapping of thsice-variables to seaice-variables, back and forth
1099      - does not break the verification experiments, but does not give the
1100        desired results either
1101    o pkg/seaice
1102      - make (default) second order advection a bit less confusing?
1103    
1104    checkpoint58f_post
1105    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1106      to pkg/seaice):
1107      - new routines thsice_map_exf and thsice_get_exf provide the interface
1108      - add an additional formal parameter to thsice_solve4temp
1109    o pkg/exf:
1110      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1111      - correct Stefan-Boltzmann constant
1112      - new parameter for longwave surface emittance
1113      - separate some stuff from exf_bulkformulae into new routines  
1114        exf_radiation, exf_wind
1115      - add new parameters and constants: longwave emissivity for ocean, ice
1116        and snow, evaporation parameters over ice
1117      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1118        either wind from stress or stress from wind
1119    o pkg/thSIce:
1120    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1121    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1122       and THSICE_CALC_THICKN
1123    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1124    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1125      to make debugging easier.
1126    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1127    o pkg/bulk_force:
1128      - clean-up comments and parameters ;
1129      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1130    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1131      generate new output for test-experiment: aim.5l_cs.thSI
1132    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1133      testreport accordingly
1134    
1135    checkpoint58e_post
1136    o SEAICE_CGRID adjoint done
1137    o R_STAR adjoint implemented.
1138      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1139      * need to sort out init. of h0facc, etc.
1140    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1141      to be able to use it in pure forward.
1142    
1143    checkpoint58d_post
1144    o upgrade simple test-experiment to tutorial example:
1145     step.1: duplicate the experiment and (step.2) will remove the old copy.
1146      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1147      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1148      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1149      tutorial_global_oce_biogeo    <- copy of dic_example
1150      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1151      tutorial_plume_on_slope       <- copy of plume_on_slope
1152      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1153      tutorial_global_oce_optim     <- empty for now (David ?)
1154      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1155     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1156    o correct a sign problem in cost_scat.F
1157    o obcs and ptracers: fix boundary conditions for advections schemes
1158      with larger stencil
1159    o thsice adjoint: start
1160    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1161      completeness
1162    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1163      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1164    o ptracers adjoint:
1165      * avoid extensive recomputatations
1166      * fix missing re-init. of gptr (missed by TAF)
1167    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1168      me to turn off the excessive output to STDOUT that this package produces
1169    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1170      and add those terms in Vector-Invariant formulation.
1171    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1172      if the control period (xx_hfluxperiod etc) is 0
1173    o in profiles pkg, clean routines and fix details
1174    o in ecco pkg, reading ssh data:
1175      fix problem in case the model does not start at iter0=0
1176    o fix mnc-pickup/restart for ptracers
1177    o new package prifiles:
1178      code to compute profile-based cost by Gael Forget
1179      (modifs in ecco, ctrl, autodiff)
1180    o Benign bug fix in initialization (spotted by M. Mazloff) of
1181      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1182    
1183    checkpoint58c_post
1184    o adjoint: finish NLFS adjoint and provide reference output in
1185      verification/global_ocean.90x40x15/results_ad_nlfs
1186    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1187      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1188      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1189      with SEAICE_CGRID defined.
1190    o move calendarDumps from "data" to "data.cal" and clean-up the code
1191      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1192    o add useEXF & useCAL flags (for now, set in hard-coded way)
1193    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1194      (were missing in NH mode, and wrong in quasihydrostatic mode).
1195      waiting for Chris updated version of calc_gw to add those CALLs.
1196    o fix bug in quasihydrostatic S/R ;
1197      add a test for this option: global_ocean.90x40x15.qshyd
1198    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1199      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1200    o add on/off flag useOffLine for package OFFLINE
1201    o seaice:
1202      - modify advection so that it works also on the C-grid
1203      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1204        problem in multi-tile runs with C-grid
1205      - add flags for clipping ice velocities and/or masking solver forcing
1206      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1207        C-grid solver
1208      - added a few comments to seaice_diffusion.F
1209      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1210        are now exclusive)
1211      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1212        required re-ordering the code a little:
1213       + make DAIRN global variable (defined in SEAICE)
1214       + move computation of the viscosities eta and zeta into a new separate
1215         routine (because I need to recompute them in seaice_ocean_stress.F)
1216    
1217    checkpoint58b_post
1218    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1219      update output.txt of exp. aim.5l_cs.thSI
1220    o various mnc cleanups and improvements:
1221      + shrink lookup tables by factor of ~4
1222      + better error reporting when running out of lookup space
1223      + able to handle longer path/file names (up to 500 chars)
1224    o adjoint:
1225      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1226      - TBD: "hidden" mom_vecinv recomp. in dynamics
1227    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1228     (allow to differentiate between forcing components using new integer flags:
1229      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1230     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1231    o ecco
1232      - enable trend removal from SSH anomaly obs.
1233    o adjoint
1234      - a fix for PmEpR when #undef EXACT_CONSERV
1235      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1236      - try to fix "hidden" recomp. in forward_step for NLFS
1237        (NLFS seems broken sometimes after I checked it in)
1238    o seaice:
1239     - add c-grid version of the dynamic solver:
1240       + three new routines that are the c-grid substitute lsr, dynsolver
1241         and ostres
1242       + put a few fields that were local to dynsolver into global common
1243         blocks, so that I can move the computation of stresses etc into
1244         seaice_lsr (saves coding but may break the adjoint).
1245     - replace more hardwired parameters by runtime parameters
1246     - add ice masks that mask the rhs of the implicit solvers where there
1247       is no ice (commented out in seaice_dynsolver, because i am not sure
1248       if this works properly), eventually this should replace the clipping
1249       of ice velocities in seaice_dynsolver to +/-40cm/s.
1250    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1251      include it only where its needed
1252    o move balancing of fluxes before the call of external_forcing_surf
1253    o seaice:
1254      - correct units of turning angles (now they are really in degrees)
1255      - move computation of GWATX/Y out of main routine into dynsolver
1256      - initialize GWATX/Y in seaice_init
1257    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1258      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1259    o seaice: add runtime flags for turning angles (default to zero)
1260    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1261      and trend from exf forcing and ctrl control adjustments
1262    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1263      (since checkpoint57x_post)
1264    o change the default rotation period to 86164.s = the Earth rotation
1265    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1266      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1267    o seaice advection: add code for choosing between the default (2nd order
1268      central differences) and multiDim advection schemes provided by
1269      pkg/generic_advdiff
1270    o seaice:
1271      - removed all references to SEAICE_GRID.h fields from
1272        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1273        (cubed-sphere configuration will change a little)
1274      - grid computations in seaice_init are obsolete now.
1275      - cleaned up code a little so that is easier to read (hopefully).
1276      - added new (better?) discretizations of default advection and diffusion
1277        (turn on with SEAICEuseFluxForm)
1278      - replace 1 in 3d global fields by kSurface in growth.F
1279      
1280    checkpoint58a_post
1281    o seaice:
1282      - bug fix in advect.F
1283    o shelfice:
1284      - separate shelfice load anomaly from pload (breaks with time
1285        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1286        Its default is 0., but it may be computed more cleverly from (unknown)
1287        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1288        done offline. A good approximation of the pressure load anomaly is
1289        necessary to avoid large initial adjustment processes underneath
1290        deep-reaching shelfice.
1291      - small fix in ISOMIP shelfice_thermodynamics
1292      - add more sophisticated thermodynamics of Hellmer (1989), this is
1293        now the default
1294      - give a few constants more intuitive names
1295    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1296      if bulk formulae are used in long integration (especially EmPmR). Turn
1297      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1298      if balancePrintMean, the imbalance that is substracted is printed to
1299      STDOUT.
1300    o fix bug (typo) in obcs_apply_eta.F
1301    o add a new package shelfice which enables us to model the circulation
1302      underneath shelf-ice with draughts of hundreds of meters.
1303     - works
1304     - to do: + include improved thermodynamics
1305              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1306                instead of new field kTopC
1307              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1308                instead of new field R_shelfIce and new code in ini_depth.F
1309                and ini_mask_etc.F?
1310              + adjust vertical mixing schemes?
1311    o seaice pkg:
1312     - add a cpp-flag to include a simple formula for a salinity dependent
1313       freezing point of sea water at the surface
1314     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1315       meridional stresses are now different (and hopefully correct)
1316    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1317       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1318       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1319    o pkg/diagnostics: add options and parameters for regional-statistics
1320       diagnostics ; define regions by reading a region-mask from a file
1321       (might add other options later)
1322    o pkg/bulk_force:
1323     - add option and parameters to use AIM surface-flux formulae.
1324     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1325       others forcing fields (defined in PARM05, parameter file "data") are loaded
1326       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1327     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1328     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1329     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1330       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1331     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1332    
1333    checkpoint58
1334    o add "--embed-source" option to genmake2 which, when the supporting
1335      tools can be compiled (as determined by genmake2) will turn on the
1336      embed_files package which then embeds the entire MITgcm source code
1337      (*.[fFhc] + Makefile) used for the build within the executable
1338      - requested by CNH but off by default
1339      - adds a paltry <9MB to the mitgcmuv executable in most cases
1340      - only writes the output when useEMBEDSRC in eedata is true
1341    o clean up 3-dim. relaxation codes:
1342      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1343      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1344      * Thanks to Tom Haine for testing!
1345    
1346    checkpoint57z_post
1347    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1348      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1349    o fix the pickup behavior for obcs in combination with ptracers
1350    o fix a bug in ptracers_external_fields_load
1351    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1352      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1353    o transfered surface NH pressure to eta field (if exactConserv).
1354    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1355         and update lab_sea output.txt file.
1356    o completing 3-dim. relaxation code: additional term
1357         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1358      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1359      * At compile time, in "EXF_OPTIONS.h" set
1360          #define  ALLOW_CLIMTEMP_RELAXATION
1361          #define  ALLOW_CLIMSALT_RELAXATION
1362      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1363          tauThetaClimRelax3Dim = 15552000.0,
1364          tauSaltClimRelax3Dim  = 15552000.0,
1365      * 3 cases:
1366          1) Use a constant-in-time 3-dim. field
1367          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1368          3) Real-time relax. to time-evolving prescribed field
1369    o Adding Laplacian-type smoothness constraint on
1370      initial and boundary (forcing) controls (ic, bc)
1371      * enable at compile-time via
1372        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1373      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1374      * Absolute scale somewhat unclear so far
1375      * no area weighting was included since no other cost term does so far
1376    
1377    checkpoint57y_post
1378    First step for a NLFS adjoint
1379    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1380    o new init. routines for calc_r_star, calc_surf_dr
1381    o still need to deal with ini_masks_etc
1382    o testreport seemed happy
1383    checkpoint57y_pre
1384    
1385    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1386    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1387    o add new offset feature to offline pkg (plus minor cleanup)
1388    o cfc fixes for final year of integration
1389    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1390      be in GCHEM_OPTIONS).
1391    
1392    checkpoint57x_post
1393    o fix testreport Pb in multiple test experiment.
1394    o cleanup our namelist syntax in verification:
1395      - make it more F95 standards compliant (some work still needed)
1396      - allows the vast majority of our tests to work with gfortran
1397    o Non-Hydrostatic:
1398     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1399     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1400    o Allow to apply AB on T,S rather than on AB(gT,gS):
1401     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1402     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1403       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1404     - need a "clever" read_pickup to restart from the other AB formulation
1405    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1406    o remove some unused variables (reduces number of compiler warnings)
1407    o adjoint
1408      * Disable useVariableViscosity for adjoint for time being
1409        (there are a number of extensive recomputations)
1410      * Initialize certain variables needed for adjoint
1411    
1412    checkpoint57w_post
1413    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1414                 fix the singleCpuIO RS version of MDSWRITEFIELD
1415       and add a WARNING if using globalFiles=T with multi-processors.
1416    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1417      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1418    o tracer advection scheme:
1419      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1420       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1421       was not very convenient).
1422      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1423       (further tests needed for the implicit DST & Flux-Limiter schemes).
1424    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1425      and sRef for convenience, handy, when you want to initialize
1426      ptracers in a large domain with a constant non-zero value. Also,
1427      untangle ptracers_init.F a little.
1428    
1429    checkpoint57v_post
1430    o change dome exp. to use variable viscosity in side-drag terms.
1431    o remove all the files from the cfc_offline test since they are now
1432      incorporated into tutorial_cfc_offline which has been producing
1433      identical results for a few days of testing
1434    o add new parameter: sideDragFactor to enable half-slip-side BC
1435      and change side-drag S/R to use viscosity from mom_calc_visc
1436      (can switch back by setting sideDragFactor=0.); affects results at
1437      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1438       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1439    o vorticity & strain are now computed without masking, to account for
1440      no-slip-side BC in variable viscosity calculation ; mask is applied
1441      anyway later on, before computing advection/coriolis terms.
1442    o modify exp4 to test new obcs support for reading from external files
1443      and for passive tracers
1444    o fix behavior of ptracers_monitor when monitor output is written to a
1445      netcdf-file; still not independent of monitor.F (writes in the same
1446      file).
1447    o change default value of tRef (put a uniform, meaningful value for ocean
1448      & atmos) and initialize sRef (was missing, as Martin mentioned).
1449    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1450      to be proportional to enstrophy dissipation length.  Thus,
1451       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1452      This is now consistent with Smagorinsky and with the manual.
1453    
1454    checkpoint57u_post
1455    o OBCS and PTRACERS: add open boundary support for passive tracers
1456      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1457        OB-values from file; this is not different from the way theta and salinity
1458        are treated
1459      - however, Orlanski-radiation conditions are not supported, and the model
1460        will stop if you use pTracers and Orlanski at the same time.
1461      - beefed up the rountine obcs_external_fields_load: now only those open
1462        boundary values are overwritten with values from files for which there
1463        are really files, otherwise the OB-fields remain untouched. This makes
1464        it possible to use different OBs at different ends of the domain (as
1465        with EXF)
1466    o reduce number of exch calls in shap_filt (s2).
1467    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1468      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1469    
1470    checkpoint57t_post
1471    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1472    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1473      same truncation, independent of the face number: affects affects several
1474      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1475    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1476      note that biharmonic viscosity + no-slip was not tested in any experiment.
1477    o fix bug in non-linear free-surf side-drag ; generate new output for
1478      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1479    o make mnc honor the writeBinaryPrec flag for most kinds of output
1480    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1481    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1482      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1483    o add brackets in multi-terms sum to get same truncation, independent of
1484      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1485      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1486    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1487      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1488      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1489      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1490      Suggested values of viscosity parameters found in mom_calc_visc.
1491      Many new viscosity diagnostics available.
1492    
1493    checkpoint57s_post
1494    o Add clearing-house for viscosity calculations, mom_calc_visc and
1495      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1496      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1497      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1498      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1499      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1500      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1501      ViscAhStrain and viscAhTension are now retired.
1502    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1503    o In response to JMC's bug report, genmake2 now ignores any soft-links
1504      that it finds in the *current* directory when searching for files.
1505      Soft-links found in any other source directories will still work as
1506      they did before.
1507    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1508      a C routine to unlimit the stack size
1509    o mnc-ify pkg/aim snapshot vars
1510    o mnc-ify pkg/land as requested by Daniel
1511    o various changes to mnc including:
1512      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1513      - output can now be grouped so that all files within a group
1514          change the ITER portion of their names in lock-step together
1515      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1516          and works with both EXCH1 and EXCH2 (but needs more testing)
1517      - writing works for all verification test cases w/ g77 on Linux
1518    
1519    checkpoint57r_post
1520    o make MNC variable initialization happen earlier
1521    o add diagnostics for (almost) each term of the momentum Eq.
1522    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1523    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1524    o remove MINIMAL_TAVE_OUTPUT option ;
1525      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1526    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1527      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1528    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1529    o add time-dependent SST, SSS control
1530    o cost terms in ecco/ modularized (new cost_generic.F)
1531    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1532    o new infrastructure for seaice model vs. obs misfits in seaice/
1533      * driver from the_main_loop.F is seaice_cost_driver.F
1534      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1535      * gradient check in Exp. 6a of natl_box_adjoint/
1536    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1537      (see README file)
1538    
1539    checkpoint57q_post
1540    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1541    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1542      - bug was reported by Jean-Michel and Ian Fenty
1543    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1544      update exp. cpl_aim+ocn output.
1545    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1546      Needed for high-res. runs with large global files
1547      to be able to limit tapelev size
1548    o Changed some tests for adjoint:
1549      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1550      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1551      * global_ocean.90x40x15/ back to default 3-level checkpointing
1552    o Modifications to enable scripted COMMON to MODULE conversion
1553      * verification/OpenAD/code/ has necessary scripts and description;
1554      * converts, compiles and runs successfully;
1555    
1556    checkpoint57p_post
1557    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1558    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1559      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1560    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1561    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1562      (was already the case for dissipation with mom_vecinv,
1563       and also the case for grad.PhiHyd when staggered-timeStep)
1564      This will allow to put dissipation out-off the AB time-stepping.
1565     Unfortunately, affects truncation error. Update output of exp. that "fails"
1566      (cg2d matching number) and leave the others for later: front_relax(10),
1567      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1568      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1569    
1570    checkpoint57o_post
1571    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1572      (2) its ready to be documented during the 20050801 DocFest
1573    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1574      for ideal_2D_oce and lab_sea on linux_ia32_g77
1575    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1576      in global1x1_tot/code_seaice_adj to access indices 32, 33
1577      (worth another tag)
1578    
1579    checkpoint57n_post
1580    o adding precip control xx_precip 32
1581    o adding swflux control xx_swflux 33
1582    o Replacing 10 forcing penalty cost routines by 1 generic.
1583    o Implementing partitioning in time-mean and variable adjustment
1584      for atmos. state.
1585    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1586    o in natl_box_adjoint:
1587      * updated exp 1 to 10
1588        (but does not have time-mean vs. variable split results yet)
1589    o updated global1x1/*_seaice_adj/
1590      to incorporate latest changes
1591    o enable useSingleCpuIO for mdsio vector routines
1592      (applies in particular to tapelev I/O)
1593    o removed inefficient K-loop in all active_file*control*.F
1594    
1595    checkpoint57m_post
1596    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1597      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1598    o pkg/exch2: filling of face-corner halo regions is optional
1599      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1600    
1601    checkpoint57l_post
1602     tag before updating tutorials (pre-release-2)
1603    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1604       for output and interpolation of input fields onto model grid)
1605    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1606       Affects results of exp. rotating_tank ; update output.txt.
1607    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1608          and taking the square quantity and/or using a fraction-weight field.
1609    o fix aim_diagnostics_init.F mate numbers.
1610    o add mnc output capability to diagnostics/diagstat and update
1611      our cvsignore files for the ACSII output generated
1612    
1613    checkpoint57k_post
1614    o lab_sea now uses diagnostics package and provides a suite of
1615      new EXF diagnostics output.
1616    
1617    checkpoint57j_post
1618    o exf
1619      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1620        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1621        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1622      * extended diagnostics output
1623        - now includes all EXF variables
1624        - hs, hl moved to common block
1625        - separate S/R for diagnostics, called after ctrl vector is added
1626        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1627        - EXFqnet contains true Qnet (i.e. includes qsw)
1628      * updated verif. lab_sea, global_with_exf
1629      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1630        to ensure that diagnostics sees a true EXFqnet
1631    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1632    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1633      several times with different frequencies.
1634    o mnc-ify the thsice package as requested by Daniel Enderton
1635      - the monitor--MNC output needs work
1636      - many attributes need to be added (most are currently blank)
1637    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1638      - many attributes need to be added (most are currently blank)
1639    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1640    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1641    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1642      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1643         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1644    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1645     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1646    
1647    checkpoint57i_post
1648    o Diagnostics package was changed: diagnostic allocation is now deactivated
1649      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1650    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1651      add 1rst Order upwind vertical Shear.
1652    o add a quick fix for A/B checkpointing in OFFLINE mode
1653    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1654      end-run around the C/Fortran linking horror in eesup/src/timers.F
1655    o added pkg/runclock: allows user to terminate run based on wall clock
1656    o added non-hydrostatic scaling parameter: nh_am2
1657    o pkg/my82: futile attempt to make results compiler-independent by adding
1658      some "_d 0", etc. no effect.
1659    o for mnc output, fill the 'T' coordinate var with myTime and create a
1660      separate 'iter' variable for iteration count
1661    o pkg/diagnostics:
1662      add new capability: output of Global/Regional & per-level statistics ;
1663      tested against monitor output (including land & thSIce) on various exp.
1664    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1665    
1666    checkpoint57h_done
1667      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1668      data.diagnostics, data.gchem, data.ptracers) is done.
1669    
1670    o pkg/diagnostics: prepare for Global/Regional statistics.
1671      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1672    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1673      and rename it: DIFFERENT_MULTIPLE
1674    
1675    checkpoint57h_post
1676    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1677    o pkg/diagnostics: change output frequency, now in seconds (instead
1678      of Nb of iterations). This requires to change data.diagnostics.
1679    checkpoint57h_pre
1680    
1681    o in mnc, let the user create the output dir if both mnc_outdir_date
1682      and mnc_outdir_num are false
1683    o add fflags() to pkg/diagnostics which allows one to specify, on a
1684      per-file basis, the file precision [default behavior is unchanged]
1685    o added diagnostics to pkg/kpp, including computation of mixed layer
1686      depth based on a temperature/density criterion
1687    o updated verification/natl_box to test the new pkg/kpp diagnostics
1688    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1689    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1690    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1691      not mnc -- this mistake was found by JMC and is now corrected
1692    
1693    checkpoint57g_post
1694    o add Adams-Bashforth 3rd Order time stepping:
1695      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1696      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1697    checkpoint57g_pre
1698    
1699    o make lambda[Theta,Salt]ClimRelax spatially varying
1700      (default remains spatially uniform constant based on tau)
1701    o added new control variables
1702      * init. uVel, vVel, etanN
1703      * lambda[Theta,Salt]ClimRelax
1704    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1705      (suggested by G. Forget)
1706    
1707    checkpoint57f_post
1708    o add parameter "baseTime" = model base time = time at iteration zero
1709      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1710      account for baseTime shift
1711    o move Coriolis arrays from PARAMS.h to GRID.h
1712    checkpoint57f_pre
1713    
1714    o mnc-ifying the seaice package
1715    o introduced an alternative length scale calculation for use in the limiting
1716      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1717    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1718    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1719      as well as grad(vort3).  Made it compatible with both approximate form
1720      for the cubed sphere and full form of these gradients.  Added flag
1721      useFullLeith to select between approximate and full form.  
1722    o add "d0" in getcon.F to reduce differences between compilers/platforms
1723      update output.txt of exp. fizhi-gridalt-hs
1724    o change port_rand funtion to allow to set the seed.
1725    o fix obscure MNC bug involving conversion between reals and integers
1726      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1727        new version is now more standards-compliant
1728    o adjoint-related modifications
1729      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1730      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1731      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1732    
1733    checkpoint57e_post
1734    o Adding eddy stress controls a la Ferreira et al.
1735    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1736    
1737    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1738      update output.txt of exp. fizhi-gridalt-hs
1739    o add more "Z" dimensions and associated coordinate vars to MNC
1740    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1741    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1742      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1743      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1744      months and years.  Requires pkg/cal.
1745    o diagnostics: add pickup functionality
1746      - off by default for backwards compatibility
1747      - current version only uses MDSIO -- MNC will be added
1748    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1749    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1750    
1751    checkpoint57d_post
1752    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1753    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1754      output from the diagnostics package
1755    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1756    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1757      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1758    o add coordinate variables to the MNC output from the diagnostics package
1759    o change MNC-flags default value: true when useMNC=TRUE
1760    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1761      the ability (off by default) to read the grid information using MNC
1762    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1763    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1764    o do snap-shot diagnostics at the middle of the time-interval (instead of
1765      at the end).
1766    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1767      new test for AIM with thSIce + slab-ocean
1768    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1769    o move state variable diagnostics to the beginning of the time step ;
1770      (note: still needs some work specially for snap-shot diagnostics)
1771      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1772    
1773    checkpoint57c_post
1774    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1775    o generate new output.txt files on faulks with g77 & the new -ieee option
1776    checkpoint57c_pre
1777    
1778    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1779      update output.txt of exp. global_ocean.90x40x15
1780    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1781      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1782    o add saltFlux(+File) forcing capability with periodicExternalForcing
1783    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1784    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1785    o improvements for the MNC output from DIAGNOSTICS:
1786      - correct handling of the unlimitied dimension
1787      - all dims now have associated coordinate variables
1788      - variables located at U, V, and Corner ("Z") points are now written
1789        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1790        *all* data points are output
1791    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1792    o added pkg/seaice/seaice_monitor.F
1793    o mdsio_readfield.F can now read files visible only to master MPI process.
1794    o pkg/seaice: some test code for ice-modified ocean stress
1795    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1796      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1797      spurious negative numbers for precipitation and humidity.  Will cause
1798      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1799    o pkg/ctrl/
1800      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1801        May be enabled via doPackDiag
1802      *  introduce z-scaling of
1803         + gradient (doZscalePack) and
1804         + control (doZscaleUnpack)
1805    o pkg/mdsio/
1806      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1807      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1808    
1809    checkpoint57b_post
1810    o simplify options in diagnostics_fill arguments (remove weird combinations)
1811    o fix MNC coordinate variables so that they now contain per-face index
1812      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1813      general, EXCH2 grids are only aligned to a "local" coordinate system
1814    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1815    o Implement instantaneous output within pkg diagnostics:
1816      setting a negative frequency in data.diagnostics produces
1817     "snap-shot" output (as opposed to time-average if freq > 0)
1818    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1819      NOTE: change ptracer diagnostics name: use 2 characters to work with
1820            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1821    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1822      becomes the coordinate variable for the 'T' dimension
1823    o add CF-style coordinate variables to MNC
1824      - just a first cut:  numbers are meaningless on the cubesphere and
1825        missing along the T axis but otherwise it works!
1826    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1827    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1828    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1829      this is based directly on what the model compute, so that the content of
1830      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1831    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1832    o clean up build options files for SunOS, in particular
1833      - remove -traditional from xmakedepend
1834      - change -xarch=v9 to -xarch=native for f77
1835      - restore use of make (not gmake)
1836      - add CC=gcc if using g77
1837    o changes per discussion of AM, JMC, & EH3 today:
1838      - move redundant "grid" variables out of "state" -- in preparation of
1839        creating proper CF-style coordinate variables and in recognition
1840        that any/all grid variables can be easily copied (eg. w/NCO) from
1841        the grid files into any of the other NetCDF files
1842      - *always* output grid variables with MDSIO (this will eventually be
1843        changed)
1844      - output MNC grid file if useMNC is true
1845    o every instance of _END_MASTER() has been found and replaced with
1846      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1847      preprocessors
1848    o re-arrange diagnostics pkg initialisation:
1849     - allow each package to extend the available diagnostics list
1850     - add some checking and fix small problems (multi-threaded, ...)
1851     - new S/R diagnostics_fill (replace fill_diagnostics):
1852       look through the short list of active diag. (instead of the long list)
1853       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1854    
1855    checkpoint57a_post
1856    o this set of changes restores TAMC compatibility
1857      tested for global_ocean.90x40x15 adjoint on trough
1858      (what a pain)
1859    
1860    checkpoint57a_pre
1861    o some modifs in tools/build_options for sunos
1862    o call ctrl_pack for ctrl at end for optimcycle=0
1863    
1864    checkpoint57
1865    o add horizontal bi-harmonic viscosity for vertical velocity
1866      - new parameter viscA4W (defaults to viscA4)
1867      - affects only non-hydrostatic code
1868      - to be done: no-slip lateral boundary conditions
1869    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1870    o implement Implicit Vertical advection for pTracers
1871    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1872      (implemented also for implicit vertical diffusion & advection)
1873    o OBCS: extend application of tracer open boundary conditions
1874      to a strip beyond the boundary of width Olx/Oly
1875    o add call monitor to TAF set of required calls (flow directives)
1876      and include in natl_box_adjoint
1877    o untangle a few ifdefs related to cost, ctrl, autodiff
1878      untangel a few ALLOW_ECCO_OPTIMIZATION
1879    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1880      (theta2, salt2 in ecco_cost_weights)
1881    
1882    checkpoint56c_post
1883    o OBCS as control variables
1884      - update ctrl_ad_diff.list, obcs_ad_diff.list
1885      - remove balance of obcs controls from default
1886      - fix index bug nobcs in ctrl_init
1887      - fix dummy fields filen in ctrl_pack
1888      - add dummy weights for obcs
1889    o lsopt: comment out fort.94 output
1890    o optim:
1891      - remove unnecessary header files
1892      - adjusted namelists
1893      - add xerbla.F to Makefile
1894    o exf:
1895      - multiple modifications of exf_check_range
1896      - unit change in exf_init_runoff from [m/year] to [m/s]
1897    o mdsio:
1898      - i/o-vector change debugLevel from debLevA to debLevB
1899    
1900    checkpoint56b_post
1901    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1902      is called from DO_THE_MODEL_IO
1903      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1904      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1905      - clean up PTRACERS_WRITE_TIMEAVE a little
1906    o add another verification experiment that tests both the cfc-pkg and
1907      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1908      reactive tendencies treated inline with regular timestepping
1909    o testreport previously did a lousy job of comparing small numbers, so
1910      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1911      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1912      testreport.
1913    o ptracers_monitor: bug fix for MPI
1914    
1915    checkpoint56a_post
1916    o GCHEM: finish reorganizating the package
1917      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1918        (introduces another 3D-array for each passive tracer, but only if
1919        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1920        gchemTendency is not needed because the timestep is done separately)
1921      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1922      - GCHEM is now---more or less cleanly---separate from PTRACERS
1923      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1924        so clear to me how that should be done in a general way.
1925    o CFC: improve formatting of output in CFC_ATMOS
1926    o PTRACERS:
1927      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1928        that ALL experiments with ptracers enable can be checked. This makes
1929        GCHEM_MONITOR obsolete.
1930      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1931        monitorFreq
1932      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1933    o add PTRACERS (PTR0[1-5]) to testreport output
1934    o exf_check_range:
1935      * default changed to .TRUE.
1936      * will check values for niter0 if debLevA, every timestep if debLevB
1937      * STOP in exf_check_range if 'out of range'
1938      * range chosen generous to allow for potential extema
1939      TBD: a version with stricter range
1940           permitted range would be runtime parameters
1941    o GMredi:
1942      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1943      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1944      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1945    o GCHEM:
1946      - move call to GCHEM_FORCING_SEP, so that it is now called before
1947        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1948      - introduced a useGCHEM runtime flag and applied it everywhere.
1949      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1950        this flag is now only visible within GCHEM-pkg routines.
1951      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1952        be replaced by a 3D array that is computed before thermodynamics; for
1953        this, the tracer ID iTracer had to be included into the parameter list
1954        of ptracers_forcing
1955      - set up forward_step to call gchem_forcing, that will replace
1956        gchem_forcing_int in ptracers_forcing
1957      - cleaning up
1958    o small cleaning of exch2: remove files that are also in eesupp/src
1959    
1960    checkpoint56
1961    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1962    o mnc: cleanup "full" files--fixes out-of-memory problem
1963    o ECCO-GODAE
1964      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1965      * fully merged and updated from SIO code
1966        windstress sign change affects
1967        - exf_inscal_[u/v]stress
1968        - sign of xx_tau[u/v] adjustments
1969        - signs in cost_scat
1970      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1971      * natl_box_adjoint updated and compressed
1972      * 2-level checkpoint switch added
1973        (tested in EXP. 1 of natl_box_adjoint)
1974      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1975    o SVD
1976      * first complete, non-hacked version for SVD calculations
1977      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1978        performed via direct access files admtlm_vector.it????
1979        (via ctrl_[un]pack)
1980      * optimcycle is used for ARPACK iteration counter
1981        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1982      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1983        and add linear transforms where necessary
1984      * controls are initial/final SST, SSS (can be extended; need to check
1985        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1986    o mdsio: filename info to both stderr, stdout
1987    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1988      from sign change
1989    
1990    checkpoint55j_post
1991    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1992      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1993    o add consistent build directories and .cvsignore files to verification
1994    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1995    o make all subroutines 30 or less characters in length for certain older
1996      compilers to work (a thorough search only turns up two routines in
1997      pkg/ptracers)
1998    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1999      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2000    
2001    checkpoint55i_post
2002    o change arrays for total vertical diffusivity (2.D if explicit,
2003      3.D if implicit) ; each ptracer uses its own background value.
2004    o added mnc/NetCDF output capability to ocn_compon_interf
2005      - added bits to verification/cpl_aim+ocn so that it can run on
2006        ITRDA and other clusters without the mpirun "-wd" option
2007    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2008      configuration
2009    o give MNC the ability to create additional files rather than
2010      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2011      - the default is just less than 2GB which is a practical limit
2012        on many systems
2013    o Compute the non-local term using either KPP vertical diffusivity (=default)
2014       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2015    
2016    checkpoint55h_post
2017    o add verification test "vermix"
2018    o remove all the *_ioinc flags and replace with the single global
2019      outputTypesInclusive flag
2020    o allow to set a vertical profile of vertical diffusivity for T & S
2021    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2022    o useMNC moved from data.mnc to data.pkg
2023    
2024    checkpoint55g_post
2025    o Renaming carbon AD experiments to comply with testreport conventions
2026    o Updating adjoint of Held-Suarez hs94.1x64x5
2027    o Fixing directives for non-ECCO forward_step, after ECCO directives
2028      have been fixed to avoid recomp. of do_oceanic_phys
2029      Works well for global_ocean.90x40x15,
2030      but recomp. issue remains for carbon
2031    o Updating adjoint output for natl_box_adjoint after
2032      pkg/ecco has been modified (see taga c55d_post)
2033    
2034    checkpoint55f_post
2035    o rename to timeave_init_fixed
2036    
2037    checkpoint55e_post
2038    o some delicate re-shuffle of store directives to avoid one
2039      extra call of do_oceanic_physics
2040      affects ecco_the_main_loop.F, do_oceanic_physics.F
2041      checkpoint_lev1_directives.h
2042    o NB: this may break global_ocean adjoint temporarily,
2043      but it is clear how to fix it. Will do later, need this now.
2044    
2045    checkpoint55d_post
2046    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2047    o ecco_cost_weights is modified to 1x1 runs
2048    o modifs to allow observations to be read in as
2049      single file or yearly files
2050    o enable to read exf forcing fields as either
2051      single file or yearly files (flag useExfYearlyFields)
2052    checkpoint55d_pre
2053    
2054    o switch between 2-level and 3-level checkpointing
2055    o add ability of MNC to write local and "partial" (eg. 2D slices where
2056      the full 3D field is never actually stored) arrays to NetCDF files
2057      with the correct (that is, the complete multi-dimensional) set of
2058      array indicies
2059      - used in mom_vecinv() to write the diagFreq output
2060      - tested (demonstrated) in verification/aim.5l_cs
2061    o further mnc-ification
2062      - add verification/lab_sea to the list with mnc setups
2063      - fix undefined mnc v-names in cd_code
2064      - add kpp to mnc output (both snapshot and timeave)
2065    o non-hydrostatic code
2066      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2067        in calc_gw.F
2068      - defaults to viscAh
2069      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2070        friction or Leith) in non-hydrostatic mode, as long as there is
2071        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2072    o pkg/cost
2073      extend simple cost functions to treat time mean quantities
2074      (T,U,V) via cost_accumulate_state from cost_tile
2075    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2076        be 2 times larger than the minimum size the advection scheme requires.
2077        now get a perfect conservation of salt in advect_cs test-exp (updated)
2078    o GGL90 (Gaspar's TKE mixed layer)
2079      - add horizontal diffusion of TKE, requires exchanges in
2080        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2081        default. In OPA there is no horizontal diffusion of TKE but the
2082        mixing coefficients are computed from a horizontal average of TKE of
2083        6 points or so. I think that diffusion has a little more physical
2084        justification.
2085      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2086        was in vain)
2087      - mask tke-variable in ggl90_init
2088    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2089    o fix biharmonic diffusion on CS-grid.
2090    o more obcs stuff
2091      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2092        for reading boundary values. This routine is called from
2093        obcs_prescribe_read
2094      - updated obcs_check
2095      - changed sponge layer relaxation parameter units for days to seconds
2096      - turned off sponge layer by default
2097      - changed argument list of OBCS_CALC to myTime+deltaTclock
2098      - fixed about 35 bugs in obcs_external_fields_load
2099    
2100    checkpoint55c_post
2101    o obcs stuff
2102      - new runtime flags useOBCSprescribe, useOBCSbalance
2103      - re-arranged obcs_calc
2104      - moved exf_getobcs to obcs_prescibe_read
2105        obcs_prescibe_read is called after ORLANSKI stuff
2106        and independent of it (executable can contain all).
2107      - updated obcs_check
2108      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2109        These may be necessary only if tangential velocities are
2110        prescribed at OB, not sure, needs testing.
2111    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2112      which simplifies the calls and passes the ifc check-bounds test
2113    
2114    checkpoint55b_post
2115    o add a 2D scalar, Z location, exchange_2 routine.
2116    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2117      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2118      affects advect_cs results (for the wrong reason): update output.txt
2119    o use a more standard discretization for biharmonic viscosity ;
2120     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2121      affects results of dome set-up: update output.txt
2122    o fix gad_advection.F (CubedSphere part), back to version 1.23
2123    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2124    
2125    checkpoint55a_post
2126    o merged code to
2127      * prescribe/read time-dependent open boundaries
2128        (works in conjunction with exf, cal)
2129      * sponge layer code for open boundaries
2130      * each boundary N/S/E/W now has its own CPP option
2131        (healthy for the adjoint)
2132    
2133    checkpoint55
2134    o up-to-date adjoint of previous breaks
2135      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2136      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2137      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2138      - carbon: * remove tr1-related adjoint verification
2139                * add ptracer as control variable
2140    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2141      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2142    
2143    checkpoint54f_post
2144    o in verification/carbin/ remove experiment related to
2145      ALLOW_PASSIVE_TRACER (array tr1 etc)
2146      code_ad/ input_ad/ results_ad
2147    
2148    o add two new packages
2149      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2150        + subject to optimization (memory)
2151      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2152        + subject to reordering (many GOTOs in the original code)
2153        + so far opps is called for every (i,j) point, and then operates in
2154          the vertical; one may want to reorder the scheme in order operate in
2155          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2156          fields)
2157    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2158      - all verification tests compile and run with linux_ia32_g77
2159      - defaults are compatible with current input files--nothing
2160        should change if you were not previously using MNC
2161      - MNC output has been added in numerous places (eg. timeave)
2162        but there are still a few writes not yet do-able with MNC
2163        (this is in progress)
2164      - flags now allow for either/or/both use of MDSIO and MNC and
2165        documentation will soon follow
2166      - numerous small formatting cleanups for ProTeX
2167    o add version info (via BUILD_INFO.h) to MNC and stdout
2168    
2169    checkpoint54e_post
2170    o add two new packages
2171      - pp81 (Packanowski and Philander, 1981), Richardson number and
2172        stratification dependent mixing
2173      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2174      - these scheme operate in a similar manner as KPP (without ghat, of
2175        course), however there is only one diffusivity that is used for both
2176        temperature and salinity (and passive tracers)ç
2177    o add offline package
2178    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2179      provided by Stephanie Dutkiewicz
2180    o genmake2: add ability to search for C compilers and cleanup test output
2181      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2182    
2183    checkpoint54d_post
2184    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2185    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2186      leading to additional shift by 5 days each year of integration
2187       (i.e. leading to considerable offset over the years)
2188    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2189    o start with no AB and no initial filtering (staggerTimeStep):
2190      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2191    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2192      (external loading & cpl import/export stay in forward_step.F)
2193    o update coupling interface to work with new staggerTimeStep
2194    o change MDSIO ptracers_pickup.
2195    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2196    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2197    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2198    
2199    checkpoint54c_post
2200    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2201      this affects (truncation error) output.txt of test-exp:
2202       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2203    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2204    o change Qnet to always be the net heat flux, (+upward).
2205      affects (truncation error) output of natl_box exp.: updated
2206    o define the max number of passive tracers in PTRACERS_SIZE.h
2207    o start to test mnc routinely in exp0
2208    o add sea-ice loading (sIceLoad) as a new forcing field.
2209    
2210    checkpoint54b_post
2211    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2212       impressive on Altix and Opteron systems)
2213    o diagnostics can now write NetCDF files through the mnc package
2214    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2215    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2216    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2217      affects (truncation error) output of lab_sea & natl_box exp.: updated
2218    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2219    
2220    checkpoint54a_post
2221    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2222    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2223    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2224    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2225      + internal_wave (shift in writing cg2d_ini_res)
2226    checkpoint54a_pre
2227    
2228    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2229      - modified verification/lab_sea and natl_box_adjoint accordingly
2230    
2231    checkpoint54
2232    checkpoint53g_post
2233    o prepare splitting of thermodynamics: store convect.counter in common block
2234    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2235      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2236    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2237    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2238    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2239    o restore adjointability
2240    
2241    checkpoint53f_post
2242    o modifications that affect AIM experiment results (update output.txt):
2243      - no advection of S at top interface Nr (pkg/generic_advdiff)
2244      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2245    o AIM pkg:
2246      - include stability function into surf.Flux derivative relative to Tsurf
2247      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2248    
2249    checkpoint53e_post
2250    o merged cylindrical coord configuration
2251    o added rotating_tank experiment
2252    checkpoint53e_pre
2253    
2254    checkpoint53d_post
2255    o faulks upgraded: re-generate output.txt that have changed:
2256       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2257    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2258    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2259    o added Sadourny discretization of Coriolis
2260      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2261      - re-enabled use of omega3 (useAbsVorticity)
2262    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2263      vector-invariant equations
2264      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2265    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2266      hopefully without new bugs
2267      - still to do: biharmonic friction for non-hydrostatic w
2268    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2269    o regenerated output for global_ocean_ebm (using -ieee)
2270    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2271      of mom_common/
2272      - simple re-arrangement of instructions within computing loop
2273    checkpoint53d_pre
2274    
2275    checkpoint53c_post
2276    o new version of coupler for AIM+thSIce and Ocean models
2277     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2278     - land: change Evaporation of snow
2279     - aim with thSIce: fix bug in snow-precip.
2280    o changes to calc_gw.F
2281     - bug fix for w^2 term near the bottom boundary
2282     - (hopefully) improve the lateral slip boundary condtions for use with
2283        partial/looped cells
2284      - because the bug fix changes two verification experiments anyway (exp5
2285        and plume on slope), change the lateral boundary condition from half slip
2286        to the value of no_slip_sides
2287    o ebm package wasnt quite up to the parallel task. Fixed that.
2288    o Adjoint of EBM package + verification
2289      * TLM OK
2290      * ADM not sufficient accuracy yet (needs further testing)
2291    
2292    checkpoint53b_post
2293    o Commiting new energy balance model to repository
2294      * package is pkg/ebm
2295      * verif. is verification/global_ocean_ebm
2296      * references are in ebm_driver.F
2297    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2298    C        Global thermohaline circulation. Part I:
2299    C        Sensitivity to atmospheric moisture transport.
2300    C        J. Climate 12(1), 71-82
2301    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2302    C        Global thermohaline circulation. Part II:
2303    C        Sensitivity with interactive transport.
2304    C        J. Climate 12(1), 83-91
2305    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2306    C        Destabilization of the thermohaline circulation
2307    C        by atmospheric eddy transports.
2308    C        J. Climate 7(12), 1870-1882
2309    o Will need long integration testing.
2310    checkpoint53b_pre
2311    
2312    o created pkg/mom_common in preparation for variable viscosity code
2313    o renamed and split ini_mnc_io
2314    o pkg/land: only liquid water can diffuse or run-off
2315    o AIM using land: soil wetness availability account for snow
2316    o added printMapIncludesZeros to EEPARMS namelist
2317    
2318    checkpoint53a_post
2319    o restore TAMC compatiility for exf_constants.h
2320      (no usage of _d in .h)
2321    o Additional storing in KPP in an attempt to fix
2322      TAMC problem with adjoint of KPP code.
2323      (no success...)
2324      Identical code works fine with TAF.
2325    o Fixed verification/natl_box_adjoint experiments.
2326      Initial conditions for Experiments 4 and 5 are now
2327      set to "SEAICE_initialHEFF=0", which is more reasonable,
2328      and hence gives results closer to that of Experiment 2.
2329      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2330    
2331    checkpoint53
2332    o stable checkpoint with up to date adjoint
2333      TLM tests only run for 1st grdchk at the moment. Its unclear if
2334      this is a code problem or a problem with resetting code for g_
2335      variables that is being autogenerated wrong.
2336      Otherwise:
2337       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2338       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2339         are both still in chaos following their security messes.
2340    
2341    checkpoint52n_post
2342    o various build (mostly genmake2) changes including:
2343      - ability to build/run more easily within Cygwin and MacOS X
2344      - more complicated Makefiles with a stronger dependence on Gnu Make
2345    o pkg/seaice modifications
2346      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2347        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2348        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2349      - changed proxy for geostrophic velocity and updated
2350        verification/lab_sea/results/* accordingly
2351      - removed ADI dynamic solver from pkg/seaice
2352      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2353        they caused a segmentation fault under certain circumstances
2354      - removed unused field WATR
2355    o bug fix in exf-package:
2356      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2357         now reflect that.
2358    o small fixes in the cal-package:
2359      - set reference date to first of January for the 'model'-calendar
2360      - failing of cal_CheckDate in cal_FullDate now actually results in a
2361        warning
2362    o small modifications in exf-package to increase flexibility:
2363      - change climtempfreeze from a constant to a runtime parameter that
2364        is specified in data.exf_clim (default = -1.9)
2365      - introduce runtime parameter windstressmax (default = 2.0) that is
2366        specified in data.exf
2367    o fix in pkg/thsice:
2368      - update Evap (Tsf changes) to be consistent with Latent heat flux
2369      - maintain snow precipitation unchanged (even if Tsf >=0).
2370     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2371    
2372    checkpoint52m_post
2373    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2374      this does not change any of the results, because myIter=0 in swfrac always
2375      lead to jwtype=2 (the default anyway), but the call makes little sense
2376      as a default
2377    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2378    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2379      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2380    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2381    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2382    o extending useSingleCpuIO option to work with new exch2 I/O format
2383      - old-style, missing-tile I/O is still accessible by defining CPP
2384        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2385    o monitor package can write to NetCDF files and/or STDOUT
2386    o fix re-definition bug in MNC_GRID_INIT_ALL()
2387    o doc/api_reference added
2388      - a framework for building an API Reference Manual using all
2389        the "protex" comments embedded in the code
2390      - see pkg/generic_advdiff, pkg/mnc for examples
2391    o MNC:
2392      - make myThid the last argument for all subroutines
2393      - new default for the grid files: NO halos
2394      - add useMNC and other run-time flags
2395      - separate per-file-group handling of the unlimited dimension
2396      - early initialization of MNC w/ flags read at the eeboot stage
2397        and lookup tables set in initialize_fixed
2398      - write all MNC output to a freshly-created directory
2399    o thermodynamics sea-ice (thsice) is now tested with testreport.
2400    o test exp. advect_cs: use the standard cs32 grid ; update output.
2401    o Added functionality to grdchk:
2402      pick global i,j,k position (or nearest wet) where to perform check.
2403    
2404    checkpoint52l_post
2405    o new land formulation:
2406      a) use ground enthalpy as prognostic variable to ensure exact
2407         energy conservation.
2408      b) account for water temperature and for latent heat of freezing
2409         in all processes (rain, run-off, ground storage)
2410      c) compute surface and ground temperature implicitly.
2411    o aim_v23 modification for new land model:
2412      a) Treat separately land / ocean / sea-ice surface fluxes
2413         to allow implicit computation of land & sea-ice surface temp.
2414      b) add snow precipitation.
2415    checkpoint52l_pre
2416    
2417    o fix problem (when 1 tile is empty) in min/max monitor.
2418    o fix bug in timeAve (u,vZetatave in common block)
2419    o no restoring terms under ice for pkg/seaice
2420    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2421    o bug fix for pkg/seaice pickups
2422    o change MNC call locations and add coordinate attributes
2423    o mask vorticity at the corner ; affects global_ocean.cs output
2424    o fix ini_curvilinear_grid ; test CS experiments with mpi
2425    o aim.5l_cs: modify sea-ice fraction input file ; update output
2426    o exf: Adding simple range check routine for exf fields after read
2427    
2428    checkpoint52k_post
2429    o removed top-level directory "diags"
2430      - we migrated these functions to pkg/timeave a long time ago
2431    o fixed bug introduced in pkg/monitor
2432    o accuracy ctrlprec = 32 insuffient for gradient checks using
2433      averaged fields (I/O via cost_averages)
2434      -> use ctrl.h in active_file*.F to control I/O precision.
2435    o paramter list of CALL ADTHE_MAIN_LOOP
2436    o added initial do_the_model_io to ecco
2437    o set all ...Freq to zero after cost_final
2438      taveFreq, dumpFreq, pChkptFreq
2439    o MAIN and ECCO differentiability restored
2440    
2441    checkpoint52j_post
2442    o fix nchklev in tamc.h for global_ocean...
2443    o Bringing flow and store directives up-to-date
2444    o Really weird thing!
2445      call do_the_model_io from the_main_loop with parameters
2446      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2447      TAF places a faulty re-call of initialise_varia
2448      after cost_final call which should not be there!
2449    checkpoint52j_pre
2450    
2451    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2452      error messages
2453    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2454    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2455      debug output
2456    o modfied mdsio_writefield.F to handle non-global files under exch2
2457    o update AIM Cubed-Sphere exp (aim.5l_cs):
2458      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2459    o update AIM Equatorial Channel exp:
2460      use standard aim_v23 pkg and change the SST fields to be more realistic.
2461    o globalFile now works with exch2
2462    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2463      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2464    o limit timeave output for hi-res integrations
2465    
2466    checkpoint52i_post
2467    o removed CPP_EEOPTIONS.h from verification/*/code
2468    o updated the tiling for global_ocean_pressure
2469    checkpoint52i_pre
2470    
2471    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2472      the old pkg/aim).
2473    
2474    checkpoint52h_pre
2475    o shortened offending lines in exch2_send_rx?.template
2476    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2477    o genmake2: add build & execute test for NetCDF code
2478    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2479      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2480    o added useSingleCPUIO flag to monitor.F and mon_out.F
2481    o added temporary hack for sea-ice dynamics on the cube:
2482      metric terms are ignored and it is assumed that
2483      there is no sea-ice on cube faces 1, 2, 4, and 5.
2484    
2485    checkpoint52f_post
2486    o added exch2 cube routines to pkg/exch2
2487    o modified hs94.cs-32x32x5 to use it
2488    o added new grid files to hs94.cs-32x32x5
2489    checkpoint52f_pre
2490    
2491    checkpoint52e_post
2492    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2493      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2494    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2495      to work with implicit vertical advection and AB ;
2496    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2497    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2498     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2499    checkpoint52e_pre
2500    
2501    o fix bug in impldiff when Nr=1 or Nr=2.
2502    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2503    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2504    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2505      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2506    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2507    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2508    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2509    
2510    checkpoint52d_post
2511    o re-tiled many expts to allow comparison in multi-processor mode
2512      - updated output accordingly
2513      - changed hs94.128x64x5 to use intial T from file rather than use the
2514        random number generator
2515    o add infrastructure in model routines for fizhi and gridalt packages
2516    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2517    o changes to permit hi-res, cubed-sphere, configuration
2518      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2519      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2520      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2521        of surface winds for the cube
2522      (A verification experiment, based on global_ocean.cs32x15, but with
2523       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2524       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2525       complete with example surface forcing files and matlab scripts to look
2526       at the output and compare it with that of global_ocean.cs32x15.)
2527    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2528       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2529       to conform to the common rule.
2530    o check-in the first version of the coupler + interfaces for multi-components
2531       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2532       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2533       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2534       - ocean and atmos. share the same horizontal grid (no interpolation).
2535       - exchanges between component and coupler is done in forward_step
2536    o new verification experiment, cpl_aim+ocn:
2537       coupled ocean - AIM atmosphere on cs32 grid.
2538    
2539    checkpoint52d_pre
2540    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2541    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2542    
2543    checkpoint52c_post
2544    o Fixing OPTIONS files for use of exf:
2545      - ALLOW_ECCO not needed
2546      - ECCO_CPPOPTIONS.h should not be included from
2547        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2548        as has been the case in the past
2549      - All cal/exf related options are currently set in
2550        single header file. Should remain so until we
2551        agree on a consistent new policy.
2552    o Removed all CPP options for cal package.
2553      cal has no more CPP options.
2554    o modified STOREs in GAD_ADVECTION
2555    o corrected key comp. for passkey
2556    
2557    checkpoint52b_post
2558    o new version: "thsice" of thermodynamic sea-ice pkg:
2559     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2560     - modify fluxes but do not change theta directly;
2561     - light cleaning of bulk_force pkg (still needed with thsice).
2562     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2563       + output_thsice.txt to test thsice & bulk_force pkgs.
2564    o put back grid & coriolis monitor output.
2565    checkpoint52b_pre
2566    
2567    o call "do_the_model_io" at the beginning (=> dump initial state)
2568    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2569    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2570      (need info on NUMBER_OF_PTRACERS)
2571    o missing PTRACERS headers in some routines
2572    o default tamc.h in pkg/autodiff supposed to crash
2573      to ensure proper customization
2574    
2575    checkpoint52a_post
2576    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2577      - moved surfaceTendencyTice from pkg/seaice to main code
2578      - subroutine FREEZE_SURFACE now limits only surface temperature
2579        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2580        => new output.txt for global_ocean.cs32x15 & global_with_exf
2581      - keep the old version of FREEZE for backward compatibility;
2582        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2583      - corresponding modifs for TAF directives
2584    o added surface flux output variables to TIMEAVE_STATVARS
2585    o time-averaged output for pkg/ptracers
2586    o fix problem with ECCO-related divided adjoint
2587      snapshot file was missing some ad-variables,
2588      but no warning issued by TAF
2589    
2590    checkpoint52a_pre
2591    o some bug fixes for #undef REAL4_IS_SLOW
2592    
2593    checkpoint52 = ecco_c52_e35
2594    o after testing adjoints of checkpoint51u_post
2595    
2596    checkpoint51u_post
2597    o this is the post-merge tag of the ecco-branch
2598      (needs another clean checkout and re-testing)
2599    o various natl_box_adjoint configs and results
2600      but no input fields
2601    o obcs adjoint not yet merged!
2602    o adding ECCO global 1x1 and 2x2 degree configs
2603    o updated/extended some store directives for seaice
2604    o pkg/ecco now containes ecco-specific part of cost function
2605    o top level routines the_main_loop, forward_step
2606      supersede those in model/src/
2607      previous input data.cost now in data.ecco
2608      (new namelist ecco_cost_nml)
2609    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2610    
2611    checkpoint51t_post
2612    o this is the pre-merge tag of the ecco-branch
2613    
2614    checkpoint51s_post
2615    o cleanup: removed various obsolete #define-s
2616    o pkg/grdchk
2617      - renamed 'ph-grd 3' to 'grad-res'
2618      - merged from ecco-branch
2619        (remaining bug fixes for obcs gradient checks)
2620      - additional high-precision output for testreport
2621        (grep for 'precision_grdchk_result')
2622    
2623    checkpoint51r_post
2624    o cleaned up or removed CPP_OPTIONS.h files
2625    o updated results for some of the tests to reflect the new
2626      optfiles (-ieee: -O0 instead of -O3)
2627    
2628    checkpoint51q_post
2629    o cd_code:
2630      - moved cd_scheme.F -> cd_code_scheme.F
2631      - separate read_checkpoint from cd_code_ini_vars.F
2632      - separated cd_code part from write_checkpoint
2633      - updated AD_SOURCE, generated .flow
2634      - added CD_CODE_VARS.h to the_main_loop
2635      - Moving cd_code specific store dir.s to pkg/cd_code
2636    o ctrl package totally restructured
2637      - pack/unpack now optional and decoupled from
2638        xx_/adxx_ I/O
2639      - ctrl_pack/unpack cleaned
2640        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2641      - confined inclusion of AD_CONFIG.h to where necessary.
2642    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2643    
2644    checkpoint51p_post
2645    o create initial cd_code package
2646      - WARNING: the initialization of fields within packages
2647        is broken because INI_FIELDS (where READ_CHECKPOINT is
2648        called) is called *before* PACKAGES_INIT_VARIABLES.
2649        This seems to be backwards since
2650        1) its important to initially zero the entire field including
2651           the "halo" region
2652        2) zeroing needs to be done *before* reading pickup info
2653           and the pickup call might or might not happen in any
2654           particular run
2655      - this needs an overhaul for R2
2656    o cleanup verification/*/code/GMREDI_OPTIONS.h
2657    o cleanup testreport
2658    
2659    checkpoint51o_post
2660    o bringing AD-related verif's up to date with genmake2
2661      - carbon/
2662      - global_ocean.90x40x15/
2663      - hs.94.1x64x5/
2664      - (front_relax/ )
2665    o (more) consistent directory structure for AD-related verif.'s
2666    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2667    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2668    o bug fix in find_alpha.F for MDJWF:
2669      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2670        change rho -> rho-rhoConst
2671      - replace call find_rho to find_rhonum
2672    o initialisation of rFlx extended to full array (required by TAF)
2673      and shifted to thermodynamics
2674    o removed PTRACERS.h in ptracers routine
2675    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2676    o Correcting initialisations for fVerU, fVerV.
2677    o helping TAF to recognize dependency on kUp for
2678      fVerU, fVerV
2679    o Replacing delZ by delR in pkg/ctrl/
2680    checkpoint51o_pre
2681    
2682    o undid all of cp51 pending some cleanups and discussion
2683    o added the [#include "AD_CONFIG.h"] statement to all files that need
2684       it for adjoint/tl #defines
2685     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2686     o removed tools/genmake since it no longer works
2687    
2688    checkpoint51n_post
2689    o modifications to make FREEZE flux visible to pkg/kpp
2690      - moved surfaceTendencyTice from pkg/seaice to main code
2691      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2692      - subroutine FREEZE now limits only surface temperature
2693        (this means new output.txt for global_ocean.90x40x15,
2694         global_ocean.cs32x15, and global_with_exf)
2695    o added surface flux output variables to TIMEAVE_STATVARS
2696    
2697    checkpoint51n_pre
2698    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2699    o added [#include "AD_CONFIG.h"] to all files that use the following
2700      defines:
2701      - ALLOW_ADJOINT_RUN
2702      - ALLOW_TANGENTLINEAR_RUN
2703      - ALLOW_ECCO_OPTIMIZATION
2704    
2705    checkpoint51m_post
2706    o incorporating changes to get TAMC/TAF working in genmake2
2707      - added new TAMC/TAF targets to the Makefile
2708      - various cleanups related to package handling
2709      - these changes should have no impact on the forward model
2710    
2711    checkpoint51l_post
2712    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2713     - faster algorithm for cal_addtime.F
2714     - higher precision arithmetic, where needed
2715     - pkg/exf *startdate variables changed from calendar date to
2716       model integration time
2717    
2718    checkpoint51l_pre
2719    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2720    o enable to apply restoring on S & T only in a latitude band.
2721    o update output (external_forcing_surf modif. change truncation errors)
2722       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2723    
2724    checkpoint51k_post
2725    o change default to: useNHMTerms=.FALSE.
2726     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2727       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2728     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2729        exp1, ideal_2D_oce
2730     - change data file of oceanic exp (leave the results unchanged for now)
2731       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2732    o set gravitySign automatically according to the vertical coordinate used
2733      (and change sign: back to "logical" value: +1 when R increases downward)
2734    o added an include barrier to the default CPP_OPTIONS.h and
2735      removed the #include "PACKAGES_CONFIG.h" from it
2736    o fix a bug in mom_fluxform (from chk51j_post)
2737    
2738    checkpoint51j_post
2739    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2740    o adjusted some flow directives (dynamics, thermodynamics)
2741    o added cubed-sphere case to test cost function
2742    o heckpoint_lev?_directives.h now include
2743      pkg-specific directives, whenever those are enabled.
2744    o Moving pkg-specific flow directives to corresponding pkg
2745      Moving pkg-specific differentiation list to corresponding pkg
2746      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2747      ---> conventions are
2748           - pkg_ad.flow
2749           - pkg_ad_diff.list
2750           - pkg_ad_check_lev?_dir.h
2751    
2752    checkpoint51i_post
2753    o merge of the branch-genmake2
2754      - knowingly breaks the older genmake
2755      - automatic generation of all ALLOW_${PKG_NAME} defines
2756      - new testreport supersedes older testscript
2757    o large number of package inclusion and header cleanups
2758    checkpoint51i_pre
2759    
2760    o new output for adjoin of global ocean vector invariant
2761    o fix for checkpoint of thermodynamic seaice and bulk_force
2762    o Steph gchem various cleanups
2763    
2764    checkpoint 51h_pre
2765    o fixed some single quotes
2766    o modify gchem pkg to be more versatile
2767    o modifications to clean up dic pkg
2768    o add pkg/cfc
2769    
2770    checkpoint51g_post
2771    o provide links for ARPACK and ADM*TLM
2772    o start removing verification/vero/
2773    o update AD-related stuff
2774      (in particular some IF-statements in model/src/ routines)
2775    o adding to verification/global_ocean.90x40x15/ adjoint of
2776      vector invariant setup
2777    
2778    checkpoint51f_post
2779    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2780    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2781      of tracer Green's fucntions for ocean inversion project.
2782    
2783    checkpoint51f_pre
2784    o Added on-the-fly spatial interpolation capability
2785        "USE_EXF_INTERPOLATION" to pkg/exf.
2786      - This is a temporary Cartesian-grid hack until
2787        the super-duper ESMF coupler becomes available.
2788      - See verification/global_with_exf/README for usage example.
2789      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2790        flags and modified pkg/seaice accordingly.
2791    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2792        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2793        non-local transport term.
2794    
2795    checkpoint51e_post
2796    o pkg/mom_vecinv:
2797      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2798      - add time-ave diagnostic of vorticity advection.
2799    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2800    o atmospheric geopotential: - include water vapor effect;
2801                                - use p^kappa in p* scaling.
2802    o land pkg: read initial state from files.
2803    o AIM : add stratospheric drag in the upper level
2804    
2805    checkpoint51d_post
2806    o change function ILNBLNK (=> last non-blank char.) to return zero
2807      (instead of the string length) when the string. char is empty
2808    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2809    o modif's to restore TAMC compatibility
2810      - avoid "_d" constructs in PARAMETER declarations
2811      - avoid interrupting lines by comment lines
2812    o Use cluster local disks for purely local I/O
2813      vs. globally visible disks needed for ctrl stuff
2814      (merged from ecco-branch)
2815      - new active_file_loc... and mdsio_..._loc routines
2816      - affected packages: autodiff, ctrl, grdchk, mdsio
2817    
2818    checkpoint51c_post
2819    o introducing integer flag debugLevel
2820      - debLevZero: suppress all output
2821      - debLevA: standard
2822      - debLevB: equivalent to current debugMode=.TRUE.
2823    o introducing pathname variable mdsioLocalDir for mdsio
2824      that can be specified at runtime
2825      (relevant for cluster I/O to local disk)
2826    `
2827    >>>checkpoint51b_post
2828    adjoint of ptracers
2829    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2830    o extended state in checkpoint_lev?, etc.
2831    o alternative ctrl/cost with tr1 or ptracer
2832    o new comlev1_bibj_ptracers
2833    o new ptracers.flow
2834    o made ptracers_forcing same as external_forcing_s
2835    o added verification for adjoint with ptracers
2836      - adm. grdchk fail so far
2837      - tlm. grdchk OK
2838      - checked tapelev/comlev recomputations: OK
2839    <<<checkpoint51b_pre
2840    
2841    checkpoint51a_post
2842    o added code for biogeochemistry package
2843      - new pkgs: dic, gchem
2844      - new subroutine in ptracers
2845    o modify code for biogeo packages
2846      - in model/src and pkg/ptracers
2847    
2848  checkpoint51  checkpoint51
2849  o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN  o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2850    - autodiff, ctrl, exf, grdchk, seaice    - autodiff, ctrl, exf, grdchk, seaice

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