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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.1005 by heimbach, Fri Jun 20 21:43:18 2008 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7  o adding precip control xx_precip  o autodiff
8  o moved ptracer ctrl index 17 -> 32    Change default for TAF usage by removing argument '-nonew_arg'
9      This changes TAF subroutine argument list (ordering of active var.)
10      Omission of this flag leads to incompatibility w.r.t. TAMC
11      To restore TAMC-compatibility, need following modifs:
12      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
13      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
14      Tested TAF version is 1.9.22
15      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
16    
17    checkpoint60
18    --->>> This is the last checkpoint for which generating the adjoint
19    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
20    --->>> by default.
21    --->>> Future checkpoints will ommit this flag by default.
22    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
23    o pkg/grdchk: Add gradient check to etan0 perturbations.
24    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
25    o pkg/autodiff: more flexibility in zeroadj.
26      model/src: modifying do_oceanic_phys.F accordingly.
27    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
28    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
29      special setup of gmredi for which the adjoint is stable
30      enough for parameter optimization.
31    o bridging the gap between eddy stress and GM.
32      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
33          along with a change in CPP option (now ALLOW_EDDYPSI).
34      -> when using GM w/ GM_AdvForm:
35          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
36          is applied either in the tracer Eq. or in momentum Eq.
37          depending on data.gmredi (intro. GM_InMomAsStress).
38      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
39      The key modifications are in model/src/taueddy_external_forcing.F
40      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
41    
42    checkpoint59r
43    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
44      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
45      fix option to read coriolis(@ cell-corner) from files with CS-grid.
46    o pkg/mnc: add some attributes to standard 1D-coordinate variables
47    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
48      mass points, when using mnc for output
49      - add runtime parameter (missing_value, missing_value_int) to override
50        default (which is the value of getcon('UNDEF'))
51    o pkg/mnc: prepare mnc for the actual use of missing values with the
52      diagnostics package: small fix in mnc_cw_readwrite.template and more
53      initialisation of never used fields
54      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
55      versions
56    o pkg/thsice/thsice_ini_vars.F added default initial values so that
57      thermodynamics sea ice solver does not blow up when some initial fields
58      are missing.
59    o move from external_forcing_surf.F to ini_forcing.F
60      the p-coord. hack consisting in using pLoad to set phi0surf ;
61      update output of tutorial_global_oce_in_p (affected @ truncation level).
62    o Freshen up a bit hs94.1x64x5, notably:
63      remove rotationPeriod and tRef=5*0. (adjoint only), and add
64      exactConserv=.TRUE.
65    o pkg/generic_advdiff:
66      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
67      applies to files where Temperature & Salinity 2nd Order moments are used.
68    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
69      this uses a dynamically allocated internal state data structure
70      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
71      and requires a fortran 90 compiler
72    
73    checkpoint59q
74    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
75       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
76    o Refresh tutorial_global_oce_biogeo, notably:
77      - change bathymetry (put back seamounts in ACC, use hFacs)
78      - change EOS (POLY3 --> JMD95Z)
79      - use Bryan-Lewis vertical diffusivity
80      - use multidimensional advection
81      - remove old virtual virtual in dic pkg, now done through ptracer pkg
82      - change a couple of parameters in dic pkg
83    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
84    o pkg/obcs: change default to OBCSfixTopo = .true.,
85      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
86      - replace "debugMode" with "debugLevel .GE. debLevB"
87    o implementation of TAF directives for gchem,cfc,dic
88    o remove "exp5" (replaced by tutorial_deep_convection).
89    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
90      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
91      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
92      --> changes results in exp4, seaice_obcs
93    o tutorial_deep_convection :
94      update the set-up and increase resolution and domain size ; start
95      from pseudo initial conditions = output at t=120mn in order to see
96      something happening when running testreport.
97    o pkg/seaice: add os7mp as an advection scheme
98                  add check for advection schemes
99                  add a flag for restoring T and S underneath sea ice
100    o pkg/my82: add netcdf-support and diagnostics
101    o thsice pkg:
102      - Now hsMax limits snow height by turning it into ice following
103        flooding scheme (and now conserving energy)
104      - Slight rewriting of the formula in thsice_calc_thick.F
105      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
106      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
107    
108    checkpoint59p
109    o gchem / dic / cfc :
110      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
111      - add new parameter files: "data.dic" & "data.cfc" ;
112      - various re-arrangement in initialisation & header file ;
113      - fix tutorial_global_oce_biogeo for multi-threaded test.
114    o pkg/dic: test for "pickup_dic" file when restarting ;
115      if no pickup-file, can restart with a re-initialised pH (same as it did
116      before) providing pickupStrictlyMatch is set to False.
117    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
118      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
119    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
120      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
121    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
122     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
123       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
124    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
125       scheme to use for vorticty-term ;
126     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
127       (with default selectVortScheme, return to original discretisation)
128     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
129    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
130    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
131      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
132      also fix diagnostics VISCAHW & VISCA4W.
133    
134    checkpoint59o
135    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
136    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
137      move a few statemens out the main loop into separate loops
138    o pkg/shelfice:
139      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
140        (kg/m^2/s), does not break tests, because in verification/isomip,
141        rhoConstFresh=rhoConst (by accident)
142      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
143      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
144        new file model/src/seawater.F, so that they are available for all pkgs.
145      - convert potential temperature into in-situ temperature. This changes the
146        isomip tests => update tests
147    o add a flag writePickupAtEnd (default=true) to be able to suppress
148      writing a pickup at the last timestep
149    o tools/mpack-1.6 :
150      - disable automake (not working) and autoconf (not needed).
151      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
152        also cleaner with much less compilation warnings.
153    o pkg/profiles:
154      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
155      (for "less than 32 characters name" compiler requirement)
156    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
157      conditions that have a different sampling frequency than S/T/U/V obcs
158    o pkg/diagnostics (stats-diags):
159      - fix global Min/Max in case 1 processor get only empty tiles
160    o genmake2: replace (4 times)
161         make genmake_tc_1.o >> genmake_warnings 2>&1
162      with
163         COMM="$CC $CFLAGS -c genmake_tc_1.c"
164         echo $COMM >> genmake_warnings
165         $COMM >> genmake_warnings 2>&1
166      to make genmake2 always see the value of CC as specified in the optfile.
167    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
168      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
169      - modify verification advect_cs test to test SOM-advection on CS-grid.
170    o pkg/ctrl:
171      - Rewrite of ctrl_map_ini_ecco.F,
172        introducing a generic routine (ctrl_map_ini_gen.F).
173      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
174    
175    checkpoint59n
176    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
177      number in dedicate array "hdiag":
178      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
179        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
180      - many small changes (integer format) for large number of diagnostics
181      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
182        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
183    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
184      usingSphericalGrid, this allows to define the rotated grid coordinates
185      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
186      geographical coordinates according to the inverse of the rotation defined
187      by the Euler angles, so that Coriolis parameter and online-interpolation by
188      exf works with the geographical coordinates on XC/YC/XG/YG.
189      Naturally, this feature does not work with all packages, so some
190      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
191      profiles), because there the coordinates are assumed to be regular
192      spherical grid coordinates.
193    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
194      - introduce isopycnal diffusion coefficient control.
195    o tools/adjoint_options:
196      - additional control vector components.
197    o pkg/mnc: have mnc create marginally meaning full coordinate variables
198      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
199    o pkg/mypackage:
200      - add example of read/write pickup for state-var ;
201      - add entry points to the main code for state-vars diags & write-pickup.
202    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
203      transitions for useExfYearlyFields
204      - add new subroutine that determines the file to read from for
205        use*YearlyFields = .TRUE. and .FALSE.
206      - add a verification experiment to global_with_exf that tests
207        useExfYearlyFields with USE_EXF_INTERPOLATION defined
208    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
209      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
210      subroutines (which could be generated from a template, because they are
211      almost identical), for now they are included in obcs_prescribe_read.F for
212      simplicity
213    o pkg/exf:
214      - add a little more diagnostic to exf_interp_read (in analogy to
215        mds_read_field, can be turned off with debugLevel < debugLevA=1)
216      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
217        ugly but fast by unrolling short inner loops, inserting a unroll=8
218        directive in routine lagran, and splitting a loop and making do while the
219        outermost loop (the latter requires the intoduction of index arrays)
220    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
221    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
222      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
223    o verification/seaice_obcs: updated for restart test and latest options
224    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
225      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
226      for now this is only available for the C-grid code and also within
227      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
228    
229    checkpoint59m
230    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
231      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
232    o gad_som : fix flux output (& diagnostics) to have same units as other  
233      advection scheme fluxes (was previously multiplied by deltaT).  
234    o added verification/seaice_obcs both to test seaice open boundaries
235      and to provide an example matlab scrpt for generating them
236    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
237    o pkg/salt_plume: clean up salt_plume_frac.F to
238      remove redundancy in PlumeMethod 1 and 4
239    o pkg/kpp: added saltplume diagnostics
240    o pkg/obcs and pkg/seaice:
241      - do not set uice and vice to zero when OB*icefile are unspecified
242      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
243      - moved seaice tracer obcs after call to seaice_growth
244    o pkg/salt_plume: added various options for salt plume depth
245      criterion and for vertical distribution of the salt
246    
247    checkpoint59l
248    o pkg/ptracers: new version of ptracers pickup:
249      read meta file and write only fields which are needed to restart.
250      ( same logic as main pickup file ; also using pickupStrictlyMatch )
251    o pkg/seaice:
252      - add timescale for melting due to warm mixed layer as a means of
253        setting SEAICE_availHeatFrac more conveniently
254      - add a CPP-flag/runtime parameter check for flooding algorithm
255      - reformulated availHeat in seaice_growth.F to be independent of AREA
256    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
257      unit changes
258    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
259    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
260      SX vector computer.
261    o pkg/seaice:
262      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
263        seaice forcing fields can now be read only through pkg/exf
264      - removed some unused halos
265    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
266    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
267      or U/VICE from U/VWIND before computing U/VSTRESS
268    
269    checkpoint59k
270    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
271      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
272    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
273      all experiments pass when compile with un-initialised var. checking option.
274    o added pkg/salt_plume
275    o script to test restart (for now, in MITgcm_contrib/jmc_script)
276    o pkg/seaice: new read/write pickup version.
277      read meta file and write only fields which are needed to restart.
278      ( same logic as main pickup file ; also using pickupStrictlyMatch )
279    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
280    o lab_sea.hb87: modify the domain & update output.hb87.txt :
281      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
282      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
283      process. Fixed here by closing the domain at the Northern boundary.
284    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
285    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
286      a set of consecutive levels in/from a 3-D array.
287    o pkg/ptracers:
288      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
289      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
290    
291    checkpoint59j
292    o in pkgs: dic, obcs, offline, rbcs:
293      standard way to compute coeff. for time interpolation between 2 time reccords
294      which retains full precision (& make results less dependent on compiler).
295      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
296    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
297      packages instead of reading ice cover and wind speed separately
298    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
299     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
300      to allow to compile customized code before the update)
301    o cleaning-up:
302      - fix CPP instruction syntax in pkg/obcs
303      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
304        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
305      - fix some threads issue in IO parts.
306    o pkg/dic:
307      - add tons of "_d 0" (--> much better testreports !)
308       and then update outputs of tutorial_global_oce_biogeo
309    o pkg/mom_fluxform:
310      add a special version of momentum advection intended to conserve momentum
311      next to a bathymetry step or a coastline edge. (default = off = #undef)
312    o new read/write pickup version:
313      - for now, only implemented for main (mdsio) pickup file.
314      - write out only what is needed to restart; merge pickup_nh , pickup_ph
315        and main pickup together.
316      - read meta file; read only what is needed to restart; stop if a field
317        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
318        if it make sense (even if the restart is not perfect).
319      - if no meta file, assume that pickup to read corresponds exactly to
320        a pickup that would currently be written.
321      - read pickup written in the old format (until checkpoint59i) if it
322        recognizes an old meta file (no field-list).
323      - add a meta file in exp. which starts from a pickup: 2 cases:
324        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
325         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
326        b) a meta file describing the content of the associated pickup file
327         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
328    o pkg/mdsio & pkg/rw:
329      - new routine to read a meta file ; new set of routine to read
330        Multiple-fields file (with meta file).
331    o added open boundary conditions capability for seaice
332        HSNOW, HSALT, UICE, and VICE
333    
334    checkpoint59i
335    o adjoint:
336      * fix multiDimAdvection adjoint
337        (partial recomputation problem by TAF for fVerT(:,:,kDown)
338        and comlev1 size definition (maxpass vs. max. number of tracers)
339      * verification/global_ocean.90x45x15 adjoint now tests
340        NLFS and multiDimAdvection using DST3 (=30)
341      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
342    o pkg/kpp: add "_d 0" to real constant (if missing);
343      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
344      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
345    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
346      for internal parameters related to restart process (formerly from PARAMS.h)
347      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
348    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
349      as argument. (only atm2d & obcs write_pickup have not yet been updated)
350    o pkg/monitor:
351      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
352      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
353      - account for deep Atmosphere factor and density factor (anelastic)
354    o added open boundary conditions capability for seaice HEFF and AREA
355    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
356      thermodynamics
357      - requires a little reorganization, which affects the testreport results
358        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
359        so that now the conservative form is tested
360      - add a few comments
361    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
362    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
363    o add new diagnostics to seaice: advective, diffusive fluxes (only for
364      multidim-advection, for scheme 2 they are not filled) and transports,
365      thermodynamic growth rates
366    o change units of EmPmR (inside the code, + within coupling interface)
367      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
368      Affects results @ truncation level (cg2d match) and update output of
369       experiments: lab_sea(6), global_ocean.90x40x15(10),
370      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
371      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
372      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
373      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
374    
375    checkpoint59h
376    o pkg/exf:
377      - improve vectorization by moving if-statement out of loops in
378        exf_mapfields, exf_radiation
379      - exf_bulkformulae.F: introduce 2D fields and vectorize code
380    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
381    o testreport:
382      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
383        monitor & update offline_exf_seaice exp. output.
384      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
385    o pkg/seaice:
386      - bug fix in the evp solver: boundary conditions were affected be
387        masking of zMax/zMin (changes results)
388      - minor bug fix in boundary conditions in seaice_calc_strainrates
389        (changes results for no_slip)
390      - seaice_lsr.F: make interpolation of eta dependent on boundaries
391      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
392      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
393        stress formulation and no-slip boundary conditions
394    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
395      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
396    o pkg/seaice: a first HSALT time stepping equation has been checked in
397    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
398      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
399      without requiring DO-IF statements
400    o pkg/thsice:
401      use continuous power-law function for partition of energy between lateral
402      melting/freezing and thinning/thickening ; old code using step function
403      still available with #undef THSICE_FRACEN_POWERLAW
404      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
405    o testreport: change AD testing : check against results/output_adm.txt
406      using same scripts as for forward test.
407    
408    checkpoint59g
409    o adjoint testing: in preparation for changing testreport:
410      - output format: cost and grad written on separated lines
411      - ad output results in directory "results" (instead of "results_ad")
412    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
413    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
414    o pkg/ecco: allow user defined cost function contributions
415    o testreport:
416      Allow to choose (per experiment) the list of tested output variables
417       and the main variable (used to issue a pass/FAIL ) ;
418      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
419      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
420      Also modify printing of summary:
421       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
422       b) echo the list of tested variables in the individual summary.txt of
423          each experiment.
424    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
425      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
426      (but still depend on the tile decompostion of the domain).
427    o pkg/seaice: change a discretization detail to make the B-grid code
428      "more symmetric". This change is likely to remove all "ridges/leads" that
429      where quasi-aligned with the grid in B-grid solutions. It may also be
430      the solution to the stress coupling issues with the B-grid.
431    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
432      remove .cvsignore from input dir. (since testreport no longer run here).
433    o pkg/thsice:
434     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
435     - fix reshaping of sea-ice just after advection:
436       melt all the ice only if ice-volume is too small.
437     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
438       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
439     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
440    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
441      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
442    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
443      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
444      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
445      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
446      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
447      -> update output.txt
448    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
449     this affects truncation error: -> update output.txt of exp:
450      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
451      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
452    
453    checkpoint59f
454    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
455    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
456      a bounded range (in forward mode)
457    o pkg/ecco, ctrl, autodiff and mom_common:
458     internal parameter controls, completements of implementations
459    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
460    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
461      (not seem any difference in testing results).
462    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
463       at face corners.
464    o pkg/generic_advdiff:
465     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
466      loop range indices for computing vertical advection tendency
467      and do the calculation in the interior only (no overlap) ;
468      for now, only implemented for SOM advection (to save CPU time).
469     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
470    o exch2 adjoint
471      First set of changes:
472      - add exch2 hand-written adjoint templates
473      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
474        This will require cleanup in pkg/autodiff/*.F
475        (changed routines currently kept separate in verif. code/)
476      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
477        that used to hide exch2 or cubed-sphere specific code
478        (commented via 'cph-exch2')
479    o pkg/seaice
480      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
481    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
482       output of global_ocean.cs32x15.thsice .
483    
484    checkpoint59e
485    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
486      for B-grid vector (not yet tested) and C-grid vector (<- only used
487      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
488    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
489      (#ifdef ALLOW_SALT_PLUME)
490    o gather_2d/scatter_2d: removed halo regions
491    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
492      scheme and the corresponding test case (under front_relax dir). For now,
493      only available with Skew-flux form and not yet tested in realistic set-up.
494      adjoint: store directives updated, but gradient checks deteriorated,
495      so maybe GM/Redi adjoint is now broken.
496    o seaice adjoint
497      * add AREA, HEFF, HSNOW as control variable
498        (should not change lab_sea results)
499      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
500    o pkg/seaice:
501      * added computation of saltFlux in seaice_growth;
502        For time being, sea ice salinity is assumed constant
503        contribution of snow flooding to freshening of sea ice is neglected.
504        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
505        defaults to 0.0 in order to maintain backward compatibility.
506        Typical values for SEAICE_salinity are 4 to 10 g/kg.
507      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
508      * added SEAICE_availHeatFrac, which specifies fraction of surface level
509        heat content used to melt or grow ice
510      * commented out cap of HICE: it helps keep ice thinner
511      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
512      * applied OBCS T/S mask to HEFFM sea ice mask
513    
514    checkpoint59d
515    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
516     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
517     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
518    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
519     and change default value of parameter "GM_Small_Number";
520     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
521       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
522       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
523    o pkg/ecco: cost function when applying pkg/smooth to controls
524    o pkg/ctrl: add forcingPrecond run time parameter
525    o pkg/seaice:
526     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
527     - fix bug in metric terms of u-equation in LSR solver (implicit part),
528       changes verification/lab_sea
529     - rearrange implicit part of u-equation in LSR solver to make it easier to
530       read, understand, and debug. This causes changes at the truncation level.
531     - fix (serious) bug in the boundary conditions (sign error in the implicit
532       part) of the LSR solver. Changes all LSR results.
533     - fixed problem with HSNOW initialization to avoid thick snow when AREA
534       is initilized with small values - does not change lab_sea results.
535     - added HsnowFile initialization capability
536    o pkg/smooth: addition to model/src and pkg/ctrl so allow
537     initialization of pkg/smooth and application to control vector
538    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
539    o dependencies: pkg/profiles requires pkg/cal
540    o pkg/profiles:
541     - added option ALLOW_PROFILES_GENERICGRID
542         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
543         that interpolation information (grid points and coefficients) is provided
544         within the netcdf input files.
545         -> sample matlab scripts can be found in MITgcm_contrib/gael
546         that allow you to prepare netcdf input files.
547     - also modified: cleaner include statements, cleaner error print statements,
548       cleaner stops when error, and more tests of the netcdf input files consistency.
549    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
550    o pkg/seaice:
551     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
552       requires a new routine: seaice_diagnostics_fill.F
553     - make sure that seaice does not move if not forced (pressure replacement
554       method, Hibler and Ip, 1995), changes results
555     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
556     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
557       It is turned off by default (=-1.), because it changes the results.
558     - make it possible to read AREA from a file, too.
559    
560    checkpoint59c
561    o add S/R and diagnostics for oceanic mixed-layer depth
562    o move GMRedi call after all vertical mixing schemes (including KPP)
563    o pkg/thsice:
564     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
565      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
566    o pkg/obcs:
567     - bug fix for balance code
568    o pkg/seaice:
569      - allow values of SEAICE_elasticParm > 1
570      - add new parameter SEAICE_evpTauRelax as an alternative
571        to SEAICE_elasticParm
572      - make lsr boundary conditions free slip (by default), changes result
573      - add code for no slip boundary conditions for lsr
574      - set minimum of zeta to zero (and not 4e8) (changes results)
575      - add a cap on AREA after advecting AREA if seaice_growth is not called
576    o change calculation of Visbeck K:
577      - no longer depend on tapering scheme; instead, compute slope (limited
578        by GM_maxSlope). this is equivalent to what was comuted before with
579        clipping or linear tappering.
580      - fix vertical averaging (wrong by 1/2 level)
581      - leave the old version (but will not be maintained) within
582        #ifdef OLD_VISBECK_CALC / #endif
583      - update output of exp. ideal_2D_oce
584    o change error catch in calc_r_star to improve vectorization
585    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
586      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
587    o adjoint:
588      Re-organized adjoint checkpointing according to Matt Mazloff
589      (but with modifs/completions/cleanups)
590      Storing is now bundled into large arrays to optimized I/O
591      (and second step in cleanup of the_main_loop)
592    
593    checkpoint59b
594    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
595      - export/import (between ocean & coupler) fields needed for ocean DIC.
596    o pkg/seaice:
597      - get rid of three more exchanges seaice_calc_viscosities (required
598        different loop boundaries in seaice_lsr and seaice_ocean_stress)
599      - bug fix in seaice_ocean_stress (update of lab_sea required)
600      - reduce loop boundaries to necessary minimum also in seaice_evp
601      - go back to the old way of computing deltaC/Z as the adjoint likes that
602        better
603    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
604      passive tracer to an Age Tracer) + update output.txt
605    o pkg/exf:
606      - implement A-grid / C-grid selection for wind-stress input files.
607      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
608      for now, in exf_bulk_largeyeager04.F only :
609      - change implementation for case where windspeed + 2. components wind-stress
610        are read-in. AND use rhoConstFresh to convert evap.
611    o pkg/seaice:
612      - use correct EXCH_UV for wind-forcing (on A-grid).
613      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
614        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
615    o pkg/exf:
616      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
617      EXF_INTERPOLATION:
618      - merge global_with_exf/code version of exf_interp_read.F
619        to the main code ;
620      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
621        reading the file ; Important: This options needs to be defined to recover
622        previous code.
623        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
624      - no longer loose real*8 precision along the way when using exf_iprec=64.
625    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
626      - change discretisation of evp-solver in order to avoid another exchange
627        (changes lab_sea) and clean up a little
628      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
629        help the adjoint (this also changes the results slightly)
630      - add a few "_d 0" where they had been missing in seaice_evp.F
631      - cleaning up: remove unused seaice_calc_rhs.F
632    o pkg/exf: some cleaning-up:
633      - change various "constants" into runtime parameters
634      - cleaned-up Large&Yeager04 routine which should eventually
635        replace exf_bulkformulae.F (changed names of S/R and CPP)
636        and merged various ALLOW_ATM_WIND options
637     only used with thsice pkg (in thsice_get_exf.F):
638      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
639        which are used when useStabilityFct_overIce=TRUE (= the default)
640      - change default values of ice & snow emissivity and scale downward LW
641        by ice & snow emissivity.
642    o pkg/thsice:
643     fix few little problems, in thsice_calc_thickn.F:
644      - growth vertically (and not laterally) if iceFrac == iceMaskMax
645      - melt only laterally if hIce < hThinIce (as the comments say)
646      and in thsice_extend.F:
647      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
648      - start to form ice as soon as the minimum ice-volume is reachable.
649     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
650      and cpl_aim+ocn
651    o pkg/kpp
652     - move computation of surface related input fields to KPP into a new
653       subroutine kpp_forcing_surf.F
654     - remove wrong (within bi,bj loops) EXCH calls.
655     - little cleaning (add argument myThid in last position, cvs header ...)
656     - for now, fix conservation problem by exchanging KPPviscAz (may not
657       be the best fix)
658    o pkg/seaice
659     - check for inconsistent evp parameter/cpp-flag combination
660     - remove leftover errIO flat for obsolete name list error handling
661    o OpenAD
662     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
663    
664    checkpoint59a
665    o pkg/seaice: some parameter clarifications and a little bit of clean up
666    o pkg/thsice: rename run-time parameters:
667       himin       -> hIceMin
668       himin0      -> hThinIce
669       hihig       -> hThickIce
670       i0          -> i0swFrac
671       transCoef   -> bMeltCoef
672       frac_energy -> fracMelting
673      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
674       with default values (for now) that do not change the results.
675      remove old version of thsice vars advection in pkg/seaice.
676    o in FFIELDS.h:
677      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
678      - make pLoad & sIceLoad always available (but still only used if
679         ATMOSPHERIC_LOADING is #define).
680    o pkg/kpp: replaced _KPP_RL with _RL
681    o bug fixes for vertical diffusivity computations when both KPP and
682        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
683        are no longer updating the vertical diffusivity array
684        (passed as argument) but are (re-) setting those arrays.
685    o pkg/seaice: fix bug in evp solver, while doing that
686      - change (improve?) discretization of stress computations for both
687        cgrid-lsr and evp solver
688      - add a new routine to compute strain rates
689      - the above changes lab_sea results
690      - add no slip conditions for evp solver (off by default), lsr-version
691        may follow
692      - fix exchange for shear at Z-points (does not change lab_sea)
693      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
694        (to force the user to pick a time step since there is not "safe" way
695        of choosing it)
696      - add principal stress diagnostics
697      - rearrange fields for evp a little to avoid having to call a: too many
698        exchanges and b: exchanges for stress trensor components which we do
699        not have.
700      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
701        of evp, complete rewrite for lsr case (latter is does not yet work
702        in all cases)
703    o pkg/kpp: add code to have mixing in shelf ice caverns
704      - add myThid to all kpp routines (long overdue)
705    
706    checkpoint59
707    o pkg/exf:
708      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
709        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
710      - move exf header files from lower_case.h to UPPER_CASE.h ;
711        add missing cvs Header & Name
712      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
713      - add namelist param. selectStressGridPosition, exf_monFreq
714      - retire many _CLIM routines, and remove data.exf_clim
715        + params moved to data.exf
716        + climsst, climsss now handled by exf_set_gen, i.e.
717          climss?period=0 refers to constant field,
718          climss?period=-12 to monthly forcing
719      - split up namelists in data.exf
720    o pkg/seaice:
721      - remove seaice_exch and seaice_exch_uv
722      - remove superfluous exchange of theta
723      - add myThid to seaice_budget_ocean/ice
724      - add new interface for atmospheric wind forcing (C-grid only)
725        + new routine
726        + two new field (taux, tauy for stress over ice)
727        + removed one global field (DAIRN) for C-grid case only
728    o pkg/thsise
729      - 2nd set of modifs for thsice adjoint in conjunction with exf
730    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
731    
732    checkpoint58y_post
733    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
734      vertical diffusivity, similar to that in MOM4; turned on using
735      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
736      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
737    o Added capability for 3D specification of background vertical diffusion
738      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
739      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
740      "data" file that contains the 3D vertical diffusivity coefficients.
741    o ice dynamics (pkg/seaice) with thsice thermodynamics:
742      - add code within pkg thsice to advect & diffuse sea-ice fields
743      similar to (and will replace) what has been added in  seaice_advdiff.F,
744      but: - conserving Mass, Heat & Salt.
745           - better when using non-linear advection scheme (not yet fully tested)
746           - can also be used in atmospheric set-up (for now, only the diffusion).
747    
748    checkpoint58x_post
749    o IO option for global-file compact format:
750      - add options when generating topology (utils/exch2/matlab-topology-generator)
751      - add I/O capability (pkg/mdsio).
752      - adapt utils/matlab/rdmds.m to read this format.
753      for now long-line format not yet supported by pkg/mdsio (& exch2).
754    o shelfice: add a few diagnostics
755    
756    checkpoint58w_post
757    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
758      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
759      (and replace horiVertRatio in NH code).
760      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
761                         and tutorial_plume_on_slope (sensitive to truncation)
762    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
763      directly to drive seaice model (C-grid only)
764    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
765     - reintroduce computation of wind from stress,
766     - compute tau (in exf_bulkformulae.F) from windstress averaged to
767       mass points to avoid tau = 0
768     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
769    o rdmnc.m: make it work with "global" files created with gluemnc
770    o rdmnc.m : some improvements in dealing with singleton dimension
771      (tested on all testreport mnc output files).
772    o genmake2: disable pkg/profiles if netcdf test fails.
773    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
774    o move call to cal_readparms up to make calendar parameters/variable available
775      to all packages
776    
777    checkpoint58v_post
778    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
779      useDynP_inEos_Zc tested.
780    o pkg/exf: changes to properly interpolate/mask/scale initial fields
781    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
782      and portions thereof.  See read_cs.txt for description and examples.
783    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
784      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
785      following the great-circle arc between those 2 points.
786    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
787      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
788    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
789     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
790     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
791     - still needs work (not working with some options ; efficiency to improve)
792       and serious testing.
793     - use this scheme for temperature & salinity in 2 advection test exp.:
794       advect_xy & advect_xz, respectively.
795    
796    checkpoint58u_post
797    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
798    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
799    o testreport: add option "-skipdir" to skip some test.
800    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
801      momentum calculation.
802    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
803    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
804      remove checkpoint.F and the_correction_step.F (no longer used);
805      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
806    o add option (linFSConserveTr) to correct for tracer source/sink due to
807      Linear Free surface
808    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
809    o pkg/thsice: fix reading mnc-pickups
810    
811    checkpoint58t_post
812    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
813    o pkg/mdsio:
814     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
815       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
816       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
817     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
818     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
819       either MDS_READ_FIELD or MDS_WRITE_FIELD )
820     - new S/R (to replace MDSWRITEMETA), which allows to write more
821       informations (variable names, time ...) to meta files.
822     - modify rdmds.m to give back the meta file content.
823    o pkg/diagnostics: change vertical interpolation to be safer, and more
824       flexible (define p-levels to interpolate to in data.diagnostics);
825      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
826       diagnostic pointer.
827    o pkg/seaice: more cleaning up of seaice_growth, added many comments
828    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
829    o fix multi-category seaice:
830     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
831       SEAICE_MULTICATEGORY
832     - fix short wave heat flux
833    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
834       and allow to use EVP solver. Change forward lab_sea: test both EVP
835       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
836    o Initial check-in of lab_sea adjoint
837      (very similar to natl_box_adjoint/code_seaice)
838      * used C-grid and EVP solver
839      * used KPP, GM/Redi
840      * uses inAdExact=.TRUE.
841      * gradient checks fail for both ADM and TLM
842        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
843        f.d. gradients actually seem more problematic than ADM, TLM gradients;
844        issue is related to forward mismatch between g77 an ifort
845    o pkg/seaice: overhaul of thermodynamics
846     - growth.F and groatb.F are replaced by new routine seaice_growth.F
847     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
848     - move a few global fields out of SEAICE.h into seaice_growth.F and
849       make them 2D (FICE/QNETO/ ...)
850     - remove FO (it is the same as QNETO)
851     - introduce a few local fields to avoid modifying external fields such
852       as atemp, etc.
853    
854    checkpoint58s_post
855    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
856      changed exf_set_gen.F so that
857        genperiod=0 means input file is one time-constant field and
858        genperiod=-12 means input file contains 12 monthly means
859    o CG2D: use pre-computed solver main-diagonal (stored in common block);
860      this affects truncation error ; generate new output file for exp. which
861      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
862        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
863        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
864        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
865        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
866        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
867    o start implementation of deep-atmosphere and anelastic formulation
868    o verification: remove 2nd copy of input files and use script "prepare_run"
869      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
870    o mom_common/vecinv/fluxform: fix a few initialisation isssues
871    o profiles: fix for multithreaded case
872    
873    o diagnostics: rename few diags:
874      s/'PRESSURE'/'RCENTER '/g
875      s/'TICE    '/'oceFreez'/g
876      s/'TAUX    '/'oceTAUX '/g
877      s/'TAUY    '/'oceTAUY '/g
878      s/'SWFLUX  '/'oceQsw  '/g
879      s/DIFx/DFxE/g
880      s/DIFy/DFyE/g
881      and add few ocean-forcing diagnostics:
882      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
883    o modifications to pkg/seaice/growth.F and budget.F, which change results of
884      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
885      as actual snow thickness.  It now refers everywhere to effective snow
886      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
887    
888    checkpoint58r_post
889    o modifications to pkg/seaice/growth.F, which change results of
890      lab_sea experiment: fixes pertain to melting snow over open water, to
891      masking EVAP under sea ice, and to using the correct AREA variable for
892      computations of EVAP, PRECIP, HSNOW, and GHEFF
893    o add ability to read bathy, salt, and theta using MNC (off by def)
894    o add flooding algorithm and advection of HSNOW for pkg/seaice;
895      both are turned off by default and do no change any results
896    o seaice advection with pkg/thsice: a step toward the use of non-linear
897      advection scheme, but #ifdef or commented out for now (requires more EXCH).
898    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
899      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
900      in natl_box (affects results @ truncation level: update output.txt)
901    o multi-threading and IO:
902      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
903      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
904        (needed to work with SingleCpuIO): tested in all verif. exp.
905    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
906      affects the results (but none of the verification test uses this scheme).
907    o Adding some pkg/diagnostics capability to pkg/seaice
908      (will certainly be subject to changes)
909    o ctrl: adding new control variables:
910      lwflux, lwdown, evap, snowprecip, apressure, runoff
911    
912    checkpoint58q_post
913    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
914      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
915      high_res_cube configuration by 4% on Columbia.
916    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
917      add (in global_with_exf/code) a version of EXF_INTERP_READ without
918      dynamical allocation (seems to work in multi-threaded).
919    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
920      single CPU io) so that TAF does not have to see EESUPPORT.h
921    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
922    
923    checkpoint58p_post
924    o obcs: stop if obcs is used with useCDscheme = .true.
925    o shelfice:
926     - fix a sign error so that no slip at shelfice interface works
927     - remove stop for combination non-hydrostatic code and shelfice. That does
928       not mean, that the results are correct, but at least they are numerically
929       stable
930    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
931    o added adjoint exch routined for all exch*3d* routines
932      and updated flow directives
933    
934    checkpoint58o_post
935    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
936      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
937    o change controling S/R for writing pickup file (new S/R do_write_pickup)
938      and clean-up reading/writing of pickup files.
939    o fix local version of read/write pickup (NH part) in rotating_tank/code
940    o simplify EXCH interface:
941     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
942     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
943    o added the regrid package
944    o shelfice:
945     - add a simple boundary layer scheme to reduce noise
946     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
947    
948    checkpoint58n_post
949    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
950       local variable (not in common block).
951    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
952      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
953      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
954        to work with SingleCpuIO.
955    o add "_d 0" to real constant of pkg/cfc subroutines ;
956       update exp. cfc_exemple & tutorial_cfc_offline output files.
957    o multi-threading and IO:
958      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
959        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
960      - barrier before and after reading.
961      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
962      - avoid using MDS_WRITELOCAL for LAND pkg output.
963      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
964        common-block variables ; Allows multi-threading with master-thread IO.
965    o change default MAX_NO_THREADS from 32 to 4 ;
966      and stop cleanly when MAX_NO_THREADS is too small.
967    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
968    
969    checkpoint58m_post
970    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
971       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
972    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
973       keep global_ocean.90x40x15 (for AD testing) with former secondary test
974       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
975    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
976        add MITgcm_tutorials (= code + all the tutorials)
977    o ecco, option to compute cost for total ssh (mean+anom)
978    o consistent with addition of ptracer and ssh in pkg/profiles
979    o profiles: adding ptracer and ssh
980    o testreport: change multi-test output-file name
981      (from output.txt.{name} to output.{name}.txt)
982    o profiles: now ok for mutli-tiles case
983    o seaice: add 4 parameters for different advection schemes for area,
984      (effective) seaice thickness, enthalphy, and snow height. Their default
985      is the standard parameter SEAICEadvScheme
986    o calc_gw:
987     - add cosFacU in zonal viscous flux (harmonic.visc.).
988     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
989       of tutorial_plume_on_slope.
990    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
991    o calc_gw: true flux-form, account for horizontal grid spacing.
992      update rotating_tank results, but not plume_on_slope (affected at
993      truncation level, 11 digits).
994    
995    checkpoint58l_post
996    o calc_gw:
997     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
998     - remove side-drag for now (need to fix it); update plume_on_slope results.
999     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1000    o commit code to make SST/SSS weights spatially variable
1001      (based on either variable in-situ or variable initial T/S weights)
1002    o pkg/ecco:
1003      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1004        now based on horizontally varying weights wthetaLev, wsaltLev
1005      * cost_averagesflags now returns year indices in addition to day, month
1006      * sflux balance is performed on annual basis
1007        (sflxumm, sfluxmm2, bal_sfluxmm)
1008      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1009        including separate counting and multipliers
1010    o pkg/rbcs
1011      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1012    
1013    checkpoint58k_post
1014    o testreport:
1015     - always build in dir. "build" (if not there, mkdir build instead of building
1016       & running in input)
1017     - run in dir run (if it exists), in build otherwise.
1018     - call prepare_run (if input/prepare_run exists)
1019     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1020    o pkg/exf modifications to interpolation and rotation routines for more
1021       reasonable treatment of North Pole singularity: for tracers North Pole
1022       value is set to northernmost zonal-mean value, for zonal velocity it is
1023       set to zero, and for meridional velocity it is set to northernmost value.
1024    o pkg/exf/exf_check_range.F
1025     - add tile index to diagnostics and move stop statement to the very
1026       end of the routine.
1027    o pkg/diagnostics: (diagnostics_main_init.F)
1028      define title of isomorphic variables according to the current config.
1029    o pkg/thsice with pkg/seaice dynamics:
1030    - fix domain of computation (interior only, required for exf) and do exchanges
1031    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1032    o towards a standard way of dealing with multi-threading in MONITOR
1033      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1034    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1035       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1036    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1037    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1038    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1039       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1040    o tracer advection:
1041     - clean-up and simplify calc_common_factors.F
1042     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1043       advection subroutine (but still not used within DST advection S/R)
1044    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1045    
1046    checkpoint58j_post
1047    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1048      from file (collects calls previously in FORWARD_STEP)
1049    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1050    o adjoint store dir. adjusted accordingly
1051    o genmake2
1052      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1053    
1054    checkpoint58i_post
1055    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1056      on wind stress (SEAICEstressFactor defaults to 1.)
1057    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1058      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1059    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1060      on CS-grid: no longer loosing mass.
1061    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1062    o pkg/ggl90: fix sloppy output and fix a bug
1063    o pkg/seaice: added SEAICEuseEVPpickup parameter
1064      - Set to false in order to start EVP solver with
1065        non-EVP pickup files when using SEAICEuseEVP
1066      - fix sign error in diffusion in seaice_calc_rhs
1067    
1068    checkpoint58h_post
1069    * Modifications for bottom topography control
1070      o replace hFacC by _hFacC at various places
1071      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1072      o add non-self-adjoint cg2d_nsa
1073      o update autodiff support routines
1074      o re-initialise hfac after ctrl_depth_ini
1075      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1076    * Adding verification for 5x5 box (4-layer) bottom topography control
1077    
1078    checkpoint58g_post
1079    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1080       used for mean seasonal cycle, mean diurnal cycle); add an example
1081       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1082    o pkg/ggl90:
1083      - add parameter (minimum surface kinetic energy)
1084      - fix bug (avoiding division by zero)
1085    o couple pkg/thsice to pkg/seaice:
1086      - modify advection in seaice to accomodate new scalar fields to be advected
1087      - only muliDimAdection scheme work with seaice/thsice
1088      - mapping of thsice-variables to seaice-variables, back and forth
1089      - does not break the verification experiments, but does not give the
1090        desired results either
1091    o pkg/seaice
1092      - make (default) second order advection a bit less confusing?
1093    
1094    checkpoint58f_post
1095    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1096      to pkg/seaice):
1097      - new routines thsice_map_exf and thsice_get_exf provide the interface
1098      - add an additional formal parameter to thsice_solve4temp
1099    o pkg/exf:
1100      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1101      - correct Stefan-Boltzmann constant
1102      - new parameter for longwave surface emittance
1103      - separate some stuff from exf_bulkformulae into new routines  
1104        exf_radiation, exf_wind
1105      - add new parameters and constants: longwave emissivity for ocean, ice
1106        and snow, evaporation parameters over ice
1107      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1108        either wind from stress or stress from wind
1109    o pkg/thSIce:
1110    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1111    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1112       and THSICE_CALC_THICKN
1113    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1114    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1115      to make debugging easier.
1116    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1117    o pkg/bulk_force:
1118      - clean-up comments and parameters ;
1119      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1120    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1121      generate new output for test-experiment: aim.5l_cs.thSI
1122    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1123      testreport accordingly
1124    
1125    checkpoint58e_post
1126    o SEAICE_CGRID adjoint done
1127    o R_STAR adjoint implemented.
1128      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1129      * need to sort out init. of h0facc, etc.
1130    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1131      to be able to use it in pure forward.
1132    
1133    checkpoint58d_post
1134    o upgrade simple test-experiment to tutorial example:
1135     step.1: duplicate the experiment and (step.2) will remove the old copy.
1136      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1137      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1138      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1139      tutorial_global_oce_biogeo    <- copy of dic_example
1140      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1141      tutorial_plume_on_slope       <- copy of plume_on_slope
1142      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1143      tutorial_global_oce_optim     <- empty for now (David ?)
1144      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1145     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1146    o correct a sign problem in cost_scat.F
1147    o obcs and ptracers: fix boundary conditions for advections schemes
1148      with larger stencil
1149    o thsice adjoint: start
1150    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1151      completeness
1152    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1153      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1154    o ptracers adjoint:
1155      * avoid extensive recomputatations
1156      * fix missing re-init. of gptr (missed by TAF)
1157    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1158      me to turn off the excessive output to STDOUT that this package produces
1159    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1160      and add those terms in Vector-Invariant formulation.
1161    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1162      if the control period (xx_hfluxperiod etc) is 0
1163    o in profiles pkg, clean routines and fix details
1164    o in ecco pkg, reading ssh data:
1165      fix problem in case the model does not start at iter0=0
1166    o fix mnc-pickup/restart for ptracers
1167    o new package prifiles:
1168      code to compute profile-based cost by Gael Forget
1169      (modifs in ecco, ctrl, autodiff)
1170    o Benign bug fix in initialization (spotted by M. Mazloff) of
1171      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1172    
1173    checkpoint58c_post
1174    o adjoint: finish NLFS adjoint and provide reference output in
1175      verification/global_ocean.90x40x15/results_ad_nlfs
1176    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1177      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1178      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1179      with SEAICE_CGRID defined.
1180    o move calendarDumps from "data" to "data.cal" and clean-up the code
1181      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1182    o add useEXF & useCAL flags (for now, set in hard-coded way)
1183    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1184      (were missing in NH mode, and wrong in quasihydrostatic mode).
1185      waiting for Chris updated version of calc_gw to add those CALLs.
1186    o fix bug in quasihydrostatic S/R ;
1187      add a test for this option: global_ocean.90x40x15.qshyd
1188    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1189      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1190    o add on/off flag useOffLine for package OFFLINE
1191    o seaice:
1192      - modify advection so that it works also on the C-grid
1193      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1194        problem in multi-tile runs with C-grid
1195      - add flags for clipping ice velocities and/or masking solver forcing
1196      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1197        C-grid solver
1198      - added a few comments to seaice_diffusion.F
1199      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1200        are now exclusive)
1201      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1202        required re-ordering the code a little:
1203       + make DAIRN global variable (defined in SEAICE)
1204       + move computation of the viscosities eta and zeta into a new separate
1205         routine (because I need to recompute them in seaice_ocean_stress.F)
1206    
1207    checkpoint58b_post
1208    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1209      update output.txt of exp. aim.5l_cs.thSI
1210    o various mnc cleanups and improvements:
1211      + shrink lookup tables by factor of ~4
1212      + better error reporting when running out of lookup space
1213      + able to handle longer path/file names (up to 500 chars)
1214    o adjoint:
1215      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1216      - TBD: "hidden" mom_vecinv recomp. in dynamics
1217    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1218     (allow to differentiate between forcing components using new integer flags:
1219      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1220     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1221    o ecco
1222      - enable trend removal from SSH anomaly obs.
1223    o adjoint
1224      - a fix for PmEpR when #undef EXACT_CONSERV
1225      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1226      - try to fix "hidden" recomp. in forward_step for NLFS
1227        (NLFS seems broken sometimes after I checked it in)
1228    o seaice:
1229     - add c-grid version of the dynamic solver:
1230       + three new routines that are the c-grid substitute lsr, dynsolver
1231         and ostres
1232       + put a few fields that were local to dynsolver into global common
1233         blocks, so that I can move the computation of stresses etc into
1234         seaice_lsr (saves coding but may break the adjoint).
1235     - replace more hardwired parameters by runtime parameters
1236     - add ice masks that mask the rhs of the implicit solvers where there
1237       is no ice (commented out in seaice_dynsolver, because i am not sure
1238       if this works properly), eventually this should replace the clipping
1239       of ice velocities in seaice_dynsolver to +/-40cm/s.
1240    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1241      include it only where its needed
1242    o move balancing of fluxes before the call of external_forcing_surf
1243    o seaice:
1244      - correct units of turning angles (now they are really in degrees)
1245      - move computation of GWATX/Y out of main routine into dynsolver
1246      - initialize GWATX/Y in seaice_init
1247    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1248      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1249    o seaice: add runtime flags for turning angles (default to zero)
1250    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1251      and trend from exf forcing and ctrl control adjustments
1252    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1253      (since checkpoint57x_post)
1254    o change the default rotation period to 86164.s = the Earth rotation
1255    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1256      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1257    o seaice advection: add code for choosing between the default (2nd order
1258      central differences) and multiDim advection schemes provided by
1259      pkg/generic_advdiff
1260    o seaice:
1261      - removed all references to SEAICE_GRID.h fields from
1262        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1263        (cubed-sphere configuration will change a little)
1264      - grid computations in seaice_init are obsolete now.
1265      - cleaned up code a little so that is easier to read (hopefully).
1266      - added new (better?) discretizations of default advection and diffusion
1267        (turn on with SEAICEuseFluxForm)
1268      - replace 1 in 3d global fields by kSurface in growth.F
1269      
1270    checkpoint58a_post
1271    o seaice:
1272      - bug fix in advect.F
1273    o shelfice:
1274      - separate shelfice load anomaly from pload (breaks with time
1275        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1276        Its default is 0., but it may be computed more cleverly from (unknown)
1277        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1278        done offline. A good approximation of the pressure load anomaly is
1279        necessary to avoid large initial adjustment processes underneath
1280        deep-reaching shelfice.
1281      - small fix in ISOMIP shelfice_thermodynamics
1282      - add more sophisticated thermodynamics of Hellmer (1989), this is
1283        now the default
1284      - give a few constants more intuitive names
1285    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1286      if bulk formulae are used in long integration (especially EmPmR). Turn
1287      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1288      if balancePrintMean, the imbalance that is substracted is printed to
1289      STDOUT.
1290    o fix bug (typo) in obcs_apply_eta.F
1291    o add a new package shelfice which enables us to model the circulation
1292      underneath shelf-ice with draughts of hundreds of meters.
1293     - works
1294     - to do: + include improved thermodynamics
1295              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1296                instead of new field kTopC
1297              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1298                instead of new field R_shelfIce and new code in ini_depth.F
1299                and ini_mask_etc.F?
1300              + adjust vertical mixing schemes?
1301    o seaice pkg:
1302     - add a cpp-flag to include a simple formula for a salinity dependent
1303       freezing point of sea water at the surface
1304     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1305       meridional stresses are now different (and hopefully correct)
1306    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1307       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1308       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1309    o pkg/diagnostics: add options and parameters for regional-statistics
1310       diagnostics ; define regions by reading a region-mask from a file
1311       (might add other options later)
1312    o pkg/bulk_force:
1313     - add option and parameters to use AIM surface-flux formulae.
1314     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1315       others forcing fields (defined in PARM05, parameter file "data") are loaded
1316       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1317     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1318     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1319     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1320       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1321     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1322    
1323    checkpoint58
1324    o add "--embed-source" option to genmake2 which, when the supporting
1325      tools can be compiled (as determined by genmake2) will turn on the
1326      embed_files package which then embeds the entire MITgcm source code
1327      (*.[fFhc] + Makefile) used for the build within the executable
1328      - requested by CNH but off by default
1329      - adds a paltry <9MB to the mitgcmuv executable in most cases
1330      - only writes the output when useEMBEDSRC in eedata is true
1331    o clean up 3-dim. relaxation codes:
1332      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1333      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1334      * Thanks to Tom Haine for testing!
1335    
1336    checkpoint57z_post
1337    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1338      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1339    o fix the pickup behavior for obcs in combination with ptracers
1340    o fix a bug in ptracers_external_fields_load
1341    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1342      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1343    o transfered surface NH pressure to eta field (if exactConserv).
1344    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1345         and update lab_sea output.txt file.
1346    o completing 3-dim. relaxation code: additional term
1347         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1348      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1349      * At compile time, in "EXF_OPTIONS.h" set
1350          #define  ALLOW_CLIMTEMP_RELAXATION
1351          #define  ALLOW_CLIMSALT_RELAXATION
1352      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1353          tauThetaClimRelax3Dim = 15552000.0,
1354          tauSaltClimRelax3Dim  = 15552000.0,
1355      * 3 cases:
1356          1) Use a constant-in-time 3-dim. field
1357          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1358          3) Real-time relax. to time-evolving prescribed field
1359    o Adding Laplacian-type smoothness constraint on
1360      initial and boundary (forcing) controls (ic, bc)
1361      * enable at compile-time via
1362        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1363      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1364      * Absolute scale somewhat unclear so far
1365      * no area weighting was included since no other cost term does so far
1366    
1367    checkpoint57y_post
1368    First step for a NLFS adjoint
1369    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1370    o new init. routines for calc_r_star, calc_surf_dr
1371    o still need to deal with ini_masks_etc
1372    o testreport seemed happy
1373    checkpoint57y_pre
1374    
1375    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1376    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1377    o add new offset feature to offline pkg (plus minor cleanup)
1378    o cfc fixes for final year of integration
1379    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1380      be in GCHEM_OPTIONS).
1381    
1382    checkpoint57x_post
1383    o fix testreport Pb in multiple test experiment.
1384    o cleanup our namelist syntax in verification:
1385      - make it more F95 standards compliant (some work still needed)
1386      - allows the vast majority of our tests to work with gfortran
1387    o Non-Hydrostatic:
1388     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1389     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1390    o Allow to apply AB on T,S rather than on AB(gT,gS):
1391     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1392     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1393       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1394     - need a "clever" read_pickup to restart from the other AB formulation
1395    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1396    o remove some unused variables (reduces number of compiler warnings)
1397    o adjoint
1398      * Disable useVariableViscosity for adjoint for time being
1399        (there are a number of extensive recomputations)
1400      * Initialize certain variables needed for adjoint
1401    
1402    checkpoint57w_post
1403    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1404                 fix the singleCpuIO RS version of MDSWRITEFIELD
1405       and add a WARNING if using globalFiles=T with multi-processors.
1406    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1407      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1408    o tracer advection scheme:
1409      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1410       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1411       was not very convenient).
1412      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1413       (further tests needed for the implicit DST & Flux-Limiter schemes).
1414    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1415      and sRef for convenience, handy, when you want to initialize
1416      ptracers in a large domain with a constant non-zero value. Also,
1417      untangle ptracers_init.F a little.
1418    
1419    checkpoint57v_post
1420    o change dome exp. to use variable viscosity in side-drag terms.
1421    o remove all the files from the cfc_offline test since they are now
1422      incorporated into tutorial_cfc_offline which has been producing
1423      identical results for a few days of testing
1424    o add new parameter: sideDragFactor to enable half-slip-side BC
1425      and change side-drag S/R to use viscosity from mom_calc_visc
1426      (can switch back by setting sideDragFactor=0.); affects results at
1427      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1428       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1429    o vorticity & strain are now computed without masking, to account for
1430      no-slip-side BC in variable viscosity calculation ; mask is applied
1431      anyway later on, before computing advection/coriolis terms.
1432    o modify exp4 to test new obcs support for reading from external files
1433      and for passive tracers
1434    o fix behavior of ptracers_monitor when monitor output is written to a
1435      netcdf-file; still not independent of monitor.F (writes in the same
1436      file).
1437    o change default value of tRef (put a uniform, meaningful value for ocean
1438      & atmos) and initialize sRef (was missing, as Martin mentioned).
1439    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1440      to be proportional to enstrophy dissipation length.  Thus,
1441       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1442      This is now consistent with Smagorinsky and with the manual.
1443    
1444    checkpoint57u_post
1445    o OBCS and PTRACERS: add open boundary support for passive tracers
1446      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1447        OB-values from file; this is not different from the way theta and salinity
1448        are treated
1449      - however, Orlanski-radiation conditions are not supported, and the model
1450        will stop if you use pTracers and Orlanski at the same time.
1451      - beefed up the rountine obcs_external_fields_load: now only those open
1452        boundary values are overwritten with values from files for which there
1453        are really files, otherwise the OB-fields remain untouched. This makes
1454        it possible to use different OBs at different ends of the domain (as
1455        with EXF)
1456    o reduce number of exch calls in shap_filt (s2).
1457    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1458      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1459    
1460    checkpoint57t_post
1461    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1462    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1463      same truncation, independent of the face number: affects affects several
1464      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1465    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1466      note that biharmonic viscosity + no-slip was not tested in any experiment.
1467    o fix bug in non-linear free-surf side-drag ; generate new output for
1468      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1469    o make mnc honor the writeBinaryPrec flag for most kinds of output
1470    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1471    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1472      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1473    o add brackets in multi-terms sum to get same truncation, independent of
1474      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1475      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1476    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1477      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1478      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1479      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1480      Suggested values of viscosity parameters found in mom_calc_visc.
1481      Many new viscosity diagnostics available.
1482    
1483    checkpoint57s_post
1484    o Add clearing-house for viscosity calculations, mom_calc_visc and
1485      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1486      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1487      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1488      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1489      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1490      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1491      ViscAhStrain and viscAhTension are now retired.
1492    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1493    o In response to JMC's bug report, genmake2 now ignores any soft-links
1494      that it finds in the *current* directory when searching for files.
1495      Soft-links found in any other source directories will still work as
1496      they did before.
1497    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1498      a C routine to unlimit the stack size
1499    o mnc-ify pkg/aim snapshot vars
1500    o mnc-ify pkg/land as requested by Daniel
1501    o various changes to mnc including:
1502      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1503      - output can now be grouped so that all files within a group
1504          change the ITER portion of their names in lock-step together
1505      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1506          and works with both EXCH1 and EXCH2 (but needs more testing)
1507      - writing works for all verification test cases w/ g77 on Linux
1508    
1509    checkpoint57r_post
1510    o make MNC variable initialization happen earlier
1511    o add diagnostics for (almost) each term of the momentum Eq.
1512    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1513    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1514    o remove MINIMAL_TAVE_OUTPUT option ;
1515      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1516    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1517      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1518    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1519    o add time-dependent SST, SSS control
1520    o cost terms in ecco/ modularized (new cost_generic.F)
1521    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1522    o new infrastructure for seaice model vs. obs misfits in seaice/
1523      * driver from the_main_loop.F is seaice_cost_driver.F
1524      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1525      * gradient check in Exp. 6a of natl_box_adjoint/
1526    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1527      (see README file)
1528    
1529    checkpoint57q_post
1530    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1531    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1532      - bug was reported by Jean-Michel and Ian Fenty
1533    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1534      update exp. cpl_aim+ocn output.
1535    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1536      Needed for high-res. runs with large global files
1537      to be able to limit tapelev size
1538    o Changed some tests for adjoint:
1539      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1540      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1541      * global_ocean.90x40x15/ back to default 3-level checkpointing
1542    o Modifications to enable scripted COMMON to MODULE conversion
1543      * verification/OpenAD/code/ has necessary scripts and description;
1544      * converts, compiles and runs successfully;
1545    
1546    checkpoint57p_post
1547    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1548    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1549      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1550    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1551    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1552      (was already the case for dissipation with mom_vecinv,
1553       and also the case for grad.PhiHyd when staggered-timeStep)
1554      This will allow to put dissipation out-off the AB time-stepping.
1555     Unfortunately, affects truncation error. Update output of exp. that "fails"
1556      (cg2d matching number) and leave the others for later: front_relax(10),
1557      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1558      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1559    
1560    checkpoint57o_post
1561    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1562      (2) its ready to be documented during the 20050801 DocFest
1563    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1564      for ideal_2D_oce and lab_sea on linux_ia32_g77
1565    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1566      in global1x1_tot/code_seaice_adj to access indices 32, 33
1567      (worth another tag)
1568    
1569    checkpoint57n_post
1570    o adding precip control xx_precip 32
1571    o adding swflux control xx_swflux 33
1572    o Replacing 10 forcing penalty cost routines by 1 generic.
1573    o Implementing partitioning in time-mean and variable adjustment
1574      for atmos. state.
1575    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1576  o in natl_box_adjoint:  o in natl_box_adjoint:
1577    * updated: results_bulk/    * updated exp 1 to 10
1578    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1579    o updated global1x1/*_seaice_adj/
1580      to incorporate latest changes
1581    o enable useSingleCpuIO for mdsio vector routines
1582      (applies in particular to tapelev I/O)
1583    o removed inefficient K-loop in all active_file*control*.F
1584    
1585  checkpoint57m_post  checkpoint57m_post
1586  o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)  o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)

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