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revision 1.390 by jmc, Sun Nov 21 22:22:31 2004 UTC revision 1.1009 by jmc, Mon Jul 28 21:23:29 2008 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o exch2/matlab-topology-generator:
8      fix bug in index bounds for N-S internal exchange (hard to tell if this
9      had any effect on the solution).
10    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
11      is exceeded
12    o testreport: modify syntax of awk, so that it works also with
13      awk, and not only with nawk and gawk
14    
15    checkpoint61
16    o autodiff
17      Change default for TAF usage by removing argument '-nonew_arg'
18      This changes TAF subroutine argument list (ordering of active var.)
19      Omission of this flag leads to incompatibility w.r.t. TAMC
20      To restore TAMC-compatibility, need following modifs:
21      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
22      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
23      Tested TAF version is 1.9.22
24      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
25    
26    checkpoint60
27    --->>> This is the last checkpoint for which generating the adjoint
28    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
29    --->>> by default.
30    --->>> Future checkpoints will ommit this flag by default.
31    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
32    o pkg/grdchk: Add gradient check to etan0 perturbations.
33    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
34    o pkg/autodiff: more flexibility in zeroadj.
35      model/src: modifying do_oceanic_phys.F accordingly.
36    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
37    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
38      special setup of gmredi for which the adjoint is stable
39      enough for parameter optimization.
40    o bridging the gap between eddy stress and GM.
41      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
42          along with a change in CPP option (now ALLOW_EDDYPSI).
43      -> when using GM w/ GM_AdvForm:
44          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
45          is applied either in the tracer Eq. or in momentum Eq.
46          depending on data.gmredi (intro. GM_InMomAsStress).
47      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
48      The key modifications are in model/src/taueddy_external_forcing.F
49      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
50    
51    checkpoint59r
52    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
53      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
54      fix option to read coriolis(@ cell-corner) from files with CS-grid.
55    o pkg/mnc: add some attributes to standard 1D-coordinate variables
56    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
57      mass points, when using mnc for output
58      - add runtime parameter (missing_value, missing_value_int) to override
59        default (which is the value of getcon('UNDEF'))
60    o pkg/mnc: prepare mnc for the actual use of missing values with the
61      diagnostics package: small fix in mnc_cw_readwrite.template and more
62      initialisation of never used fields
63      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
64      versions
65    o pkg/thsice/thsice_ini_vars.F added default initial values so that
66      thermodynamics sea ice solver does not blow up when some initial fields
67      are missing.
68    o move from external_forcing_surf.F to ini_forcing.F
69      the p-coord. hack consisting in using pLoad to set phi0surf ;
70      update output of tutorial_global_oce_in_p (affected @ truncation level).
71    o Freshen up a bit hs94.1x64x5, notably:
72      remove rotationPeriod and tRef=5*0. (adjoint only), and add
73      exactConserv=.TRUE.
74    o pkg/generic_advdiff:
75      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
76      applies to files where Temperature & Salinity 2nd Order moments are used.
77    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
78      this uses a dynamically allocated internal state data structure
79      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
80      and requires a fortran 90 compiler
81    
82    checkpoint59q
83    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
84       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
85    o Refresh tutorial_global_oce_biogeo, notably:
86      - change bathymetry (put back seamounts in ACC, use hFacs)
87      - change EOS (POLY3 --> JMD95Z)
88      - use Bryan-Lewis vertical diffusivity
89      - use multidimensional advection
90      - remove old virtual virtual in dic pkg, now done through ptracer pkg
91      - change a couple of parameters in dic pkg
92    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
93    o pkg/obcs: change default to OBCSfixTopo = .true.,
94      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
95      - replace "debugMode" with "debugLevel .GE. debLevB"
96    o implementation of TAF directives for gchem,cfc,dic
97    o remove "exp5" (replaced by tutorial_deep_convection).
98    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
99      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
100      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
101      --> changes results in exp4, seaice_obcs
102    o tutorial_deep_convection :
103      update the set-up and increase resolution and domain size ; start
104      from pseudo initial conditions = output at t=120mn in order to see
105      something happening when running testreport.
106    o pkg/seaice: add os7mp as an advection scheme
107                  add check for advection schemes
108                  add a flag for restoring T and S underneath sea ice
109    o pkg/my82: add netcdf-support and diagnostics
110    o thsice pkg:
111      - Now hsMax limits snow height by turning it into ice following
112        flooding scheme (and now conserving energy)
113      - Slight rewriting of the formula in thsice_calc_thick.F
114      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
115      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
116    
117    checkpoint59p
118    o gchem / dic / cfc :
119      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
120      - add new parameter files: "data.dic" & "data.cfc" ;
121      - various re-arrangement in initialisation & header file ;
122      - fix tutorial_global_oce_biogeo for multi-threaded test.
123    o pkg/dic: test for "pickup_dic" file when restarting ;
124      if no pickup-file, can restart with a re-initialised pH (same as it did
125      before) providing pickupStrictlyMatch is set to False.
126    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
127      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
128    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
129      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
130    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
131     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
132       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
133    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
134       scheme to use for vorticty-term ;
135     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
136       (with default selectVortScheme, return to original discretisation)
137     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
138    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
139    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
140      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
141      also fix diagnostics VISCAHW & VISCA4W.
142    
143    checkpoint59o
144    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
145    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
146      move a few statemens out the main loop into separate loops
147    o pkg/shelfice:
148      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
149        (kg/m^2/s), does not break tests, because in verification/isomip,
150        rhoConstFresh=rhoConst (by accident)
151      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
152      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
153        new file model/src/seawater.F, so that they are available for all pkgs.
154      - convert potential temperature into in-situ temperature. This changes the
155        isomip tests => update tests
156    o add a flag writePickupAtEnd (default=true) to be able to suppress
157      writing a pickup at the last timestep
158    o tools/mpack-1.6 :
159      - disable automake (not working) and autoconf (not needed).
160      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
161        also cleaner with much less compilation warnings.
162    o pkg/profiles:
163      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
164      (for "less than 32 characters name" compiler requirement)
165    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
166      conditions that have a different sampling frequency than S/T/U/V obcs
167    o pkg/diagnostics (stats-diags):
168      - fix global Min/Max in case 1 processor get only empty tiles
169    o genmake2: replace (4 times)
170         make genmake_tc_1.o >> genmake_warnings 2>&1
171      with
172         COMM="$CC $CFLAGS -c genmake_tc_1.c"
173         echo $COMM >> genmake_warnings
174         $COMM >> genmake_warnings 2>&1
175      to make genmake2 always see the value of CC as specified in the optfile.
176    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
177      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
178      - modify verification advect_cs test to test SOM-advection on CS-grid.
179    o pkg/ctrl:
180      - Rewrite of ctrl_map_ini_ecco.F,
181        introducing a generic routine (ctrl_map_ini_gen.F).
182      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
183    
184    checkpoint59n
185    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
186      number in dedicate array "hdiag":
187      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
188        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
189      - many small changes (integer format) for large number of diagnostics
190      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
191        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
192    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
193      usingSphericalGrid, this allows to define the rotated grid coordinates
194      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
195      geographical coordinates according to the inverse of the rotation defined
196      by the Euler angles, so that Coriolis parameter and online-interpolation by
197      exf works with the geographical coordinates on XC/YC/XG/YG.
198      Naturally, this feature does not work with all packages, so some
199      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
200      profiles), because there the coordinates are assumed to be regular
201      spherical grid coordinates.
202    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
203      - introduce isopycnal diffusion coefficient control.
204    o tools/adjoint_options:
205      - additional control vector components.
206    o pkg/mnc: have mnc create marginally meaning full coordinate variables
207      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
208    o pkg/mypackage:
209      - add example of read/write pickup for state-var ;
210      - add entry points to the main code for state-vars diags & write-pickup.
211    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
212      transitions for useExfYearlyFields
213      - add new subroutine that determines the file to read from for
214        use*YearlyFields = .TRUE. and .FALSE.
215      - add a verification experiment to global_with_exf that tests
216        useExfYearlyFields with USE_EXF_INTERPOLATION defined
217    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
218      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
219      subroutines (which could be generated from a template, because they are
220      almost identical), for now they are included in obcs_prescribe_read.F for
221      simplicity
222    o pkg/exf:
223      - add a little more diagnostic to exf_interp_read (in analogy to
224        mds_read_field, can be turned off with debugLevel < debugLevA=1)
225      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
226        ugly but fast by unrolling short inner loops, inserting a unroll=8
227        directive in routine lagran, and splitting a loop and making do while the
228        outermost loop (the latter requires the intoduction of index arrays)
229    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
230    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
231      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
232    o verification/seaice_obcs: updated for restart test and latest options
233    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
234      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
235      for now this is only available for the C-grid code and also within
236      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
237    
238    checkpoint59m
239    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
240      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
241    o gad_som : fix flux output (& diagnostics) to have same units as other  
242      advection scheme fluxes (was previously multiplied by deltaT).  
243    o added verification/seaice_obcs both to test seaice open boundaries
244      and to provide an example matlab scrpt for generating them
245    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
246    o pkg/salt_plume: clean up salt_plume_frac.F to
247      remove redundancy in PlumeMethod 1 and 4
248    o pkg/kpp: added saltplume diagnostics
249    o pkg/obcs and pkg/seaice:
250      - do not set uice and vice to zero when OB*icefile are unspecified
251      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
252      - moved seaice tracer obcs after call to seaice_growth
253    o pkg/salt_plume: added various options for salt plume depth
254      criterion and for vertical distribution of the salt
255    
256    checkpoint59l
257    o pkg/ptracers: new version of ptracers pickup:
258      read meta file and write only fields which are needed to restart.
259      ( same logic as main pickup file ; also using pickupStrictlyMatch )
260    o pkg/seaice:
261      - add timescale for melting due to warm mixed layer as a means of
262        setting SEAICE_availHeatFrac more conveniently
263      - add a CPP-flag/runtime parameter check for flooding algorithm
264      - reformulated availHeat in seaice_growth.F to be independent of AREA
265    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
266      unit changes
267    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
268    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
269      SX vector computer.
270    o pkg/seaice:
271      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
272        seaice forcing fields can now be read only through pkg/exf
273      - removed some unused halos
274    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
275    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
276      or U/VICE from U/VWIND before computing U/VSTRESS
277    
278    checkpoint59k
279    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
280      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
281    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
282      all experiments pass when compile with un-initialised var. checking option.
283    o added pkg/salt_plume
284    o script to test restart (for now, in MITgcm_contrib/jmc_script)
285    o pkg/seaice: new read/write pickup version.
286      read meta file and write only fields which are needed to restart.
287      ( same logic as main pickup file ; also using pickupStrictlyMatch )
288    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
289    o lab_sea.hb87: modify the domain & update output.hb87.txt :
290      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
291      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
292      process. Fixed here by closing the domain at the Northern boundary.
293    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
294    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
295      a set of consecutive levels in/from a 3-D array.
296    o pkg/ptracers:
297      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
298      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
299    
300    checkpoint59j
301    o in pkgs: dic, obcs, offline, rbcs:
302      standard way to compute coeff. for time interpolation between 2 time reccords
303      which retains full precision (& make results less dependent on compiler).
304      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
305    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
306      packages instead of reading ice cover and wind speed separately
307    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
308     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
309      to allow to compile customized code before the update)
310    o cleaning-up:
311      - fix CPP instruction syntax in pkg/obcs
312      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
313        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
314      - fix some threads issue in IO parts.
315    o pkg/dic:
316      - add tons of "_d 0" (--> much better testreports !)
317       and then update outputs of tutorial_global_oce_biogeo
318    o pkg/mom_fluxform:
319      add a special version of momentum advection intended to conserve momentum
320      next to a bathymetry step or a coastline edge. (default = off = #undef)
321    o new read/write pickup version:
322      - for now, only implemented for main (mdsio) pickup file.
323      - write out only what is needed to restart; merge pickup_nh , pickup_ph
324        and main pickup together.
325      - read meta file; read only what is needed to restart; stop if a field
326        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
327        if it make sense (even if the restart is not perfect).
328      - if no meta file, assume that pickup to read corresponds exactly to
329        a pickup that would currently be written.
330      - read pickup written in the old format (until checkpoint59i) if it
331        recognizes an old meta file (no field-list).
332      - add a meta file in exp. which starts from a pickup: 2 cases:
333        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
334         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
335        b) a meta file describing the content of the associated pickup file
336         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
337    o pkg/mdsio & pkg/rw:
338      - new routine to read a meta file ; new set of routine to read
339        Multiple-fields file (with meta file).
340    o added open boundary conditions capability for seaice
341        HSNOW, HSALT, UICE, and VICE
342    
343    checkpoint59i
344    o adjoint:
345      * fix multiDimAdvection adjoint
346        (partial recomputation problem by TAF for fVerT(:,:,kDown)
347        and comlev1 size definition (maxpass vs. max. number of tracers)
348      * verification/global_ocean.90x45x15 adjoint now tests
349        NLFS and multiDimAdvection using DST3 (=30)
350      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
351    o pkg/kpp: add "_d 0" to real constant (if missing);
352      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
353      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
354    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
355      for internal parameters related to restart process (formerly from PARAMS.h)
356      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
357    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
358      as argument. (only atm2d & obcs write_pickup have not yet been updated)
359    o pkg/monitor:
360      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
361      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
362      - account for deep Atmosphere factor and density factor (anelastic)
363    o added open boundary conditions capability for seaice HEFF and AREA
364    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
365      thermodynamics
366      - requires a little reorganization, which affects the testreport results
367        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
368        so that now the conservative form is tested
369      - add a few comments
370    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
371    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
372    o add new diagnostics to seaice: advective, diffusive fluxes (only for
373      multidim-advection, for scheme 2 they are not filled) and transports,
374      thermodynamic growth rates
375    o change units of EmPmR (inside the code, + within coupling interface)
376      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
377      Affects results @ truncation level (cg2d match) and update output of
378       experiments: lab_sea(6), global_ocean.90x40x15(10),
379      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
380      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
381      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
382      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
383    
384    checkpoint59h
385    o pkg/exf:
386      - improve vectorization by moving if-statement out of loops in
387        exf_mapfields, exf_radiation
388      - exf_bulkformulae.F: introduce 2D fields and vectorize code
389    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
390    o testreport:
391      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
392        monitor & update offline_exf_seaice exp. output.
393      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
394    o pkg/seaice:
395      - bug fix in the evp solver: boundary conditions were affected be
396        masking of zMax/zMin (changes results)
397      - minor bug fix in boundary conditions in seaice_calc_strainrates
398        (changes results for no_slip)
399      - seaice_lsr.F: make interpolation of eta dependent on boundaries
400      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
401      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
402        stress formulation and no-slip boundary conditions
403    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
404      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
405    o pkg/seaice: a first HSALT time stepping equation has been checked in
406    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
407      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
408      without requiring DO-IF statements
409    o pkg/thsice:
410      use continuous power-law function for partition of energy between lateral
411      melting/freezing and thinning/thickening ; old code using step function
412      still available with #undef THSICE_FRACEN_POWERLAW
413      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
414    o testreport: change AD testing : check against results/output_adm.txt
415      using same scripts as for forward test.
416    
417    checkpoint59g
418    o adjoint testing: in preparation for changing testreport:
419      - output format: cost and grad written on separated lines
420      - ad output results in directory "results" (instead of "results_ad")
421    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
422    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
423    o pkg/ecco: allow user defined cost function contributions
424    o testreport:
425      Allow to choose (per experiment) the list of tested output variables
426       and the main variable (used to issue a pass/FAIL ) ;
427      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
428      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
429      Also modify printing of summary:
430       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
431       b) echo the list of tested variables in the individual summary.txt of
432          each experiment.
433    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
434      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
435      (but still depend on the tile decompostion of the domain).
436    o pkg/seaice: change a discretization detail to make the B-grid code
437      "more symmetric". This change is likely to remove all "ridges/leads" that
438      where quasi-aligned with the grid in B-grid solutions. It may also be
439      the solution to the stress coupling issues with the B-grid.
440    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
441      remove .cvsignore from input dir. (since testreport no longer run here).
442    o pkg/thsice:
443     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
444     - fix reshaping of sea-ice just after advection:
445       melt all the ice only if ice-volume is too small.
446     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
447       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
448     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
449    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
450      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
451    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
452      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
453      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
454      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
455      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
456      -> update output.txt
457    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
458     this affects truncation error: -> update output.txt of exp:
459      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
460      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
461    
462    checkpoint59f
463    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
464    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
465      a bounded range (in forward mode)
466    o pkg/ecco, ctrl, autodiff and mom_common:
467     internal parameter controls, completements of implementations
468    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
469    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
470      (not seem any difference in testing results).
471    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
472       at face corners.
473    o pkg/generic_advdiff:
474     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
475      loop range indices for computing vertical advection tendency
476      and do the calculation in the interior only (no overlap) ;
477      for now, only implemented for SOM advection (to save CPU time).
478     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
479    o exch2 adjoint
480      First set of changes:
481      - add exch2 hand-written adjoint templates
482      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
483        This will require cleanup in pkg/autodiff/*.F
484        (changed routines currently kept separate in verif. code/)
485      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
486        that used to hide exch2 or cubed-sphere specific code
487        (commented via 'cph-exch2')
488    o pkg/seaice
489      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
490    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
491       output of global_ocean.cs32x15.thsice .
492    
493    checkpoint59e
494    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
495      for B-grid vector (not yet tested) and C-grid vector (<- only used
496      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
497    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
498      (#ifdef ALLOW_SALT_PLUME)
499    o gather_2d/scatter_2d: removed halo regions
500    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
501      scheme and the corresponding test case (under front_relax dir). For now,
502      only available with Skew-flux form and not yet tested in realistic set-up.
503      adjoint: store directives updated, but gradient checks deteriorated,
504      so maybe GM/Redi adjoint is now broken.
505    o seaice adjoint
506      * add AREA, HEFF, HSNOW as control variable
507        (should not change lab_sea results)
508      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
509    o pkg/seaice:
510      * added computation of saltFlux in seaice_growth;
511        For time being, sea ice salinity is assumed constant
512        contribution of snow flooding to freshening of sea ice is neglected.
513        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
514        defaults to 0.0 in order to maintain backward compatibility.
515        Typical values for SEAICE_salinity are 4 to 10 g/kg.
516      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
517      * added SEAICE_availHeatFrac, which specifies fraction of surface level
518        heat content used to melt or grow ice
519      * commented out cap of HICE: it helps keep ice thinner
520      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
521      * applied OBCS T/S mask to HEFFM sea ice mask
522    
523    checkpoint59d
524    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
525     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
526     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
527    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
528     and change default value of parameter "GM_Small_Number";
529     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
530       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
531       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
532    o pkg/ecco: cost function when applying pkg/smooth to controls
533    o pkg/ctrl: add forcingPrecond run time parameter
534    o pkg/seaice:
535     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
536     - fix bug in metric terms of u-equation in LSR solver (implicit part),
537       changes verification/lab_sea
538     - rearrange implicit part of u-equation in LSR solver to make it easier to
539       read, understand, and debug. This causes changes at the truncation level.
540     - fix (serious) bug in the boundary conditions (sign error in the implicit
541       part) of the LSR solver. Changes all LSR results.
542     - fixed problem with HSNOW initialization to avoid thick snow when AREA
543       is initilized with small values - does not change lab_sea results.
544     - added HsnowFile initialization capability
545    o pkg/smooth: addition to model/src and pkg/ctrl so allow
546     initialization of pkg/smooth and application to control vector
547    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
548    o dependencies: pkg/profiles requires pkg/cal
549    o pkg/profiles:
550     - added option ALLOW_PROFILES_GENERICGRID
551         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
552         that interpolation information (grid points and coefficients) is provided
553         within the netcdf input files.
554         -> sample matlab scripts can be found in MITgcm_contrib/gael
555         that allow you to prepare netcdf input files.
556     - also modified: cleaner include statements, cleaner error print statements,
557       cleaner stops when error, and more tests of the netcdf input files consistency.
558    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
559    o pkg/seaice:
560     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
561       requires a new routine: seaice_diagnostics_fill.F
562     - make sure that seaice does not move if not forced (pressure replacement
563       method, Hibler and Ip, 1995), changes results
564     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
565     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
566       It is turned off by default (=-1.), because it changes the results.
567     - make it possible to read AREA from a file, too.
568    
569    checkpoint59c
570    o add S/R and diagnostics for oceanic mixed-layer depth
571    o move GMRedi call after all vertical mixing schemes (including KPP)
572    o pkg/thsice:
573     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
574      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
575    o pkg/obcs:
576     - bug fix for balance code
577    o pkg/seaice:
578      - allow values of SEAICE_elasticParm > 1
579      - add new parameter SEAICE_evpTauRelax as an alternative
580        to SEAICE_elasticParm
581      - make lsr boundary conditions free slip (by default), changes result
582      - add code for no slip boundary conditions for lsr
583      - set minimum of zeta to zero (and not 4e8) (changes results)
584      - add a cap on AREA after advecting AREA if seaice_growth is not called
585    o change calculation of Visbeck K:
586      - no longer depend on tapering scheme; instead, compute slope (limited
587        by GM_maxSlope). this is equivalent to what was comuted before with
588        clipping or linear tappering.
589      - fix vertical averaging (wrong by 1/2 level)
590      - leave the old version (but will not be maintained) within
591        #ifdef OLD_VISBECK_CALC / #endif
592      - update output of exp. ideal_2D_oce
593    o change error catch in calc_r_star to improve vectorization
594    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
595      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
596    o adjoint:
597      Re-organized adjoint checkpointing according to Matt Mazloff
598      (but with modifs/completions/cleanups)
599      Storing is now bundled into large arrays to optimized I/O
600      (and second step in cleanup of the_main_loop)
601    
602    checkpoint59b
603    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
604      - export/import (between ocean & coupler) fields needed for ocean DIC.
605    o pkg/seaice:
606      - get rid of three more exchanges seaice_calc_viscosities (required
607        different loop boundaries in seaice_lsr and seaice_ocean_stress)
608      - bug fix in seaice_ocean_stress (update of lab_sea required)
609      - reduce loop boundaries to necessary minimum also in seaice_evp
610      - go back to the old way of computing deltaC/Z as the adjoint likes that
611        better
612    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
613      passive tracer to an Age Tracer) + update output.txt
614    o pkg/exf:
615      - implement A-grid / C-grid selection for wind-stress input files.
616      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
617      for now, in exf_bulk_largeyeager04.F only :
618      - change implementation for case where windspeed + 2. components wind-stress
619        are read-in. AND use rhoConstFresh to convert evap.
620    o pkg/seaice:
621      - use correct EXCH_UV for wind-forcing (on A-grid).
622      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
623        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
624    o pkg/exf:
625      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
626      EXF_INTERPOLATION:
627      - merge global_with_exf/code version of exf_interp_read.F
628        to the main code ;
629      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
630        reading the file ; Important: This options needs to be defined to recover
631        previous code.
632        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
633      - no longer loose real*8 precision along the way when using exf_iprec=64.
634    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
635      - change discretisation of evp-solver in order to avoid another exchange
636        (changes lab_sea) and clean up a little
637      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
638        help the adjoint (this also changes the results slightly)
639      - add a few "_d 0" where they had been missing in seaice_evp.F
640      - cleaning up: remove unused seaice_calc_rhs.F
641    o pkg/exf: some cleaning-up:
642      - change various "constants" into runtime parameters
643      - cleaned-up Large&Yeager04 routine which should eventually
644        replace exf_bulkformulae.F (changed names of S/R and CPP)
645        and merged various ALLOW_ATM_WIND options
646     only used with thsice pkg (in thsice_get_exf.F):
647      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
648        which are used when useStabilityFct_overIce=TRUE (= the default)
649      - change default values of ice & snow emissivity and scale downward LW
650        by ice & snow emissivity.
651    o pkg/thsice:
652     fix few little problems, in thsice_calc_thickn.F:
653      - growth vertically (and not laterally) if iceFrac == iceMaskMax
654      - melt only laterally if hIce < hThinIce (as the comments say)
655      and in thsice_extend.F:
656      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
657      - start to form ice as soon as the minimum ice-volume is reachable.
658     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
659      and cpl_aim+ocn
660    o pkg/kpp
661     - move computation of surface related input fields to KPP into a new
662       subroutine kpp_forcing_surf.F
663     - remove wrong (within bi,bj loops) EXCH calls.
664     - little cleaning (add argument myThid in last position, cvs header ...)
665     - for now, fix conservation problem by exchanging KPPviscAz (may not
666       be the best fix)
667    o pkg/seaice
668     - check for inconsistent evp parameter/cpp-flag combination
669     - remove leftover errIO flat for obsolete name list error handling
670    o OpenAD
671     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
672    
673    checkpoint59a
674    o pkg/seaice: some parameter clarifications and a little bit of clean up
675    o pkg/thsice: rename run-time parameters:
676       himin       -> hIceMin
677       himin0      -> hThinIce
678       hihig       -> hThickIce
679       i0          -> i0swFrac
680       transCoef   -> bMeltCoef
681       frac_energy -> fracMelting
682      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
683       with default values (for now) that do not change the results.
684      remove old version of thsice vars advection in pkg/seaice.
685    o in FFIELDS.h:
686      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
687      - make pLoad & sIceLoad always available (but still only used if
688         ATMOSPHERIC_LOADING is #define).
689    o pkg/kpp: replaced _KPP_RL with _RL
690    o bug fixes for vertical diffusivity computations when both KPP and
691        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
692        are no longer updating the vertical diffusivity array
693        (passed as argument) but are (re-) setting those arrays.
694    o pkg/seaice: fix bug in evp solver, while doing that
695      - change (improve?) discretization of stress computations for both
696        cgrid-lsr and evp solver
697      - add a new routine to compute strain rates
698      - the above changes lab_sea results
699      - add no slip conditions for evp solver (off by default), lsr-version
700        may follow
701      - fix exchange for shear at Z-points (does not change lab_sea)
702      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
703        (to force the user to pick a time step since there is not "safe" way
704        of choosing it)
705      - add principal stress diagnostics
706      - rearrange fields for evp a little to avoid having to call a: too many
707        exchanges and b: exchanges for stress trensor components which we do
708        not have.
709      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
710        of evp, complete rewrite for lsr case (latter is does not yet work
711        in all cases)
712    o pkg/kpp: add code to have mixing in shelf ice caverns
713      - add myThid to all kpp routines (long overdue)
714    
715    checkpoint59
716    o pkg/exf:
717      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
718        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
719      - move exf header files from lower_case.h to UPPER_CASE.h ;
720        add missing cvs Header & Name
721      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
722      - add namelist param. selectStressGridPosition, exf_monFreq
723      - retire many _CLIM routines, and remove data.exf_clim
724        + params moved to data.exf
725        + climsst, climsss now handled by exf_set_gen, i.e.
726          climss?period=0 refers to constant field,
727          climss?period=-12 to monthly forcing
728      - split up namelists in data.exf
729    o pkg/seaice:
730      - remove seaice_exch and seaice_exch_uv
731      - remove superfluous exchange of theta
732      - add myThid to seaice_budget_ocean/ice
733      - add new interface for atmospheric wind forcing (C-grid only)
734        + new routine
735        + two new field (taux, tauy for stress over ice)
736        + removed one global field (DAIRN) for C-grid case only
737    o pkg/thsise
738      - 2nd set of modifs for thsice adjoint in conjunction with exf
739    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
740    
741    checkpoint58y_post
742    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
743      vertical diffusivity, similar to that in MOM4; turned on using
744      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
745      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
746    o Added capability for 3D specification of background vertical diffusion
747      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
748      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
749      "data" file that contains the 3D vertical diffusivity coefficients.
750    o ice dynamics (pkg/seaice) with thsice thermodynamics:
751      - add code within pkg thsice to advect & diffuse sea-ice fields
752      similar to (and will replace) what has been added in  seaice_advdiff.F,
753      but: - conserving Mass, Heat & Salt.
754           - better when using non-linear advection scheme (not yet fully tested)
755           - can also be used in atmospheric set-up (for now, only the diffusion).
756    
757    checkpoint58x_post
758    o IO option for global-file compact format:
759      - add options when generating topology (utils/exch2/matlab-topology-generator)
760      - add I/O capability (pkg/mdsio).
761      - adapt utils/matlab/rdmds.m to read this format.
762      for now long-line format not yet supported by pkg/mdsio (& exch2).
763    o shelfice: add a few diagnostics
764    
765    checkpoint58w_post
766    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
767      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
768      (and replace horiVertRatio in NH code).
769      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
770                         and tutorial_plume_on_slope (sensitive to truncation)
771    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
772      directly to drive seaice model (C-grid only)
773    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
774     - reintroduce computation of wind from stress,
775     - compute tau (in exf_bulkformulae.F) from windstress averaged to
776       mass points to avoid tau = 0
777     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
778    o rdmnc.m: make it work with "global" files created with gluemnc
779    o rdmnc.m : some improvements in dealing with singleton dimension
780      (tested on all testreport mnc output files).
781    o genmake2: disable pkg/profiles if netcdf test fails.
782    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
783    o move call to cal_readparms up to make calendar parameters/variable available
784      to all packages
785    
786    checkpoint58v_post
787    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
788      useDynP_inEos_Zc tested.
789    o pkg/exf: changes to properly interpolate/mask/scale initial fields
790    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
791      and portions thereof.  See read_cs.txt for description and examples.
792    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
793      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
794      following the great-circle arc between those 2 points.
795    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
796      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
797    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
798     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
799     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
800     - still needs work (not working with some options ; efficiency to improve)
801       and serious testing.
802     - use this scheme for temperature & salinity in 2 advection test exp.:
803       advect_xy & advect_xz, respectively.
804    
805    checkpoint58u_post
806    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
807    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
808    o testreport: add option "-skipdir" to skip some test.
809    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
810      momentum calculation.
811    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
812    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
813      remove checkpoint.F and the_correction_step.F (no longer used);
814      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
815    o add option (linFSConserveTr) to correct for tracer source/sink due to
816      Linear Free surface
817    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
818    o pkg/thsice: fix reading mnc-pickups
819    
820    checkpoint58t_post
821    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
822    o pkg/mdsio:
823     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
824       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
825       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
826     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
827     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
828       either MDS_READ_FIELD or MDS_WRITE_FIELD )
829     - new S/R (to replace MDSWRITEMETA), which allows to write more
830       informations (variable names, time ...) to meta files.
831     - modify rdmds.m to give back the meta file content.
832    o pkg/diagnostics: change vertical interpolation to be safer, and more
833       flexible (define p-levels to interpolate to in data.diagnostics);
834      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
835       diagnostic pointer.
836    o pkg/seaice: more cleaning up of seaice_growth, added many comments
837    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
838    o fix multi-category seaice:
839     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
840       SEAICE_MULTICATEGORY
841     - fix short wave heat flux
842    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
843       and allow to use EVP solver. Change forward lab_sea: test both EVP
844       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
845    o Initial check-in of lab_sea adjoint
846      (very similar to natl_box_adjoint/code_seaice)
847      * used C-grid and EVP solver
848      * used KPP, GM/Redi
849      * uses inAdExact=.TRUE.
850      * gradient checks fail for both ADM and TLM
851        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
852        f.d. gradients actually seem more problematic than ADM, TLM gradients;
853        issue is related to forward mismatch between g77 an ifort
854    o pkg/seaice: overhaul of thermodynamics
855     - growth.F and groatb.F are replaced by new routine seaice_growth.F
856     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
857     - move a few global fields out of SEAICE.h into seaice_growth.F and
858       make them 2D (FICE/QNETO/ ...)
859     - remove FO (it is the same as QNETO)
860     - introduce a few local fields to avoid modifying external fields such
861       as atemp, etc.
862    
863    checkpoint58s_post
864    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
865      changed exf_set_gen.F so that
866        genperiod=0 means input file is one time-constant field and
867        genperiod=-12 means input file contains 12 monthly means
868    o CG2D: use pre-computed solver main-diagonal (stored in common block);
869      this affects truncation error ; generate new output file for exp. which
870      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
871        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
872        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
873        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
874        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
875        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
876    o start implementation of deep-atmosphere and anelastic formulation
877    o verification: remove 2nd copy of input files and use script "prepare_run"
878      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
879    o mom_common/vecinv/fluxform: fix a few initialisation isssues
880    o profiles: fix for multithreaded case
881    
882    o diagnostics: rename few diags:
883      s/'PRESSURE'/'RCENTER '/g
884      s/'TICE    '/'oceFreez'/g
885      s/'TAUX    '/'oceTAUX '/g
886      s/'TAUY    '/'oceTAUY '/g
887      s/'SWFLUX  '/'oceQsw  '/g
888      s/DIFx/DFxE/g
889      s/DIFy/DFyE/g
890      and add few ocean-forcing diagnostics:
891      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
892    o modifications to pkg/seaice/growth.F and budget.F, which change results of
893      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
894      as actual snow thickness.  It now refers everywhere to effective snow
895      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
896    
897    checkpoint58r_post
898    o modifications to pkg/seaice/growth.F, which change results of
899      lab_sea experiment: fixes pertain to melting snow over open water, to
900      masking EVAP under sea ice, and to using the correct AREA variable for
901      computations of EVAP, PRECIP, HSNOW, and GHEFF
902    o add ability to read bathy, salt, and theta using MNC (off by def)
903    o add flooding algorithm and advection of HSNOW for pkg/seaice;
904      both are turned off by default and do no change any results
905    o seaice advection with pkg/thsice: a step toward the use of non-linear
906      advection scheme, but #ifdef or commented out for now (requires more EXCH).
907    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
908      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
909      in natl_box (affects results @ truncation level: update output.txt)
910    o multi-threading and IO:
911      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
912      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
913        (needed to work with SingleCpuIO): tested in all verif. exp.
914    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
915      affects the results (but none of the verification test uses this scheme).
916    o Adding some pkg/diagnostics capability to pkg/seaice
917      (will certainly be subject to changes)
918    o ctrl: adding new control variables:
919      lwflux, lwdown, evap, snowprecip, apressure, runoff
920    
921    checkpoint58q_post
922    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
923      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
924      high_res_cube configuration by 4% on Columbia.
925    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
926      add (in global_with_exf/code) a version of EXF_INTERP_READ without
927      dynamical allocation (seems to work in multi-threaded).
928    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
929      single CPU io) so that TAF does not have to see EESUPPORT.h
930    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
931    
932    checkpoint58p_post
933    o obcs: stop if obcs is used with useCDscheme = .true.
934    o shelfice:
935     - fix a sign error so that no slip at shelfice interface works
936     - remove stop for combination non-hydrostatic code and shelfice. That does
937       not mean, that the results are correct, but at least they are numerically
938       stable
939    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
940    o added adjoint exch routined for all exch*3d* routines
941      and updated flow directives
942    
943    checkpoint58o_post
944    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
945      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
946    o change controling S/R for writing pickup file (new S/R do_write_pickup)
947      and clean-up reading/writing of pickup files.
948    o fix local version of read/write pickup (NH part) in rotating_tank/code
949    o simplify EXCH interface:
950     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
951     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
952    o added the regrid package
953    o shelfice:
954     - add a simple boundary layer scheme to reduce noise
955     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
956    
957    checkpoint58n_post
958    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
959       local variable (not in common block).
960    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
961      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
962      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
963        to work with SingleCpuIO.
964    o add "_d 0" to real constant of pkg/cfc subroutines ;
965       update exp. cfc_exemple & tutorial_cfc_offline output files.
966    o multi-threading and IO:
967      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
968        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
969      - barrier before and after reading.
970      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
971      - avoid using MDS_WRITELOCAL for LAND pkg output.
972      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
973        common-block variables ; Allows multi-threading with master-thread IO.
974    o change default MAX_NO_THREADS from 32 to 4 ;
975      and stop cleanly when MAX_NO_THREADS is too small.
976    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
977    
978    checkpoint58m_post
979    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
980       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
981    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
982       keep global_ocean.90x40x15 (for AD testing) with former secondary test
983       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
984    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
985        add MITgcm_tutorials (= code + all the tutorials)
986    o ecco, option to compute cost for total ssh (mean+anom)
987    o consistent with addition of ptracer and ssh in pkg/profiles
988    o profiles: adding ptracer and ssh
989    o testreport: change multi-test output-file name
990      (from output.txt.{name} to output.{name}.txt)
991    o profiles: now ok for mutli-tiles case
992    o seaice: add 4 parameters for different advection schemes for area,
993      (effective) seaice thickness, enthalphy, and snow height. Their default
994      is the standard parameter SEAICEadvScheme
995    o calc_gw:
996     - add cosFacU in zonal viscous flux (harmonic.visc.).
997     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
998       of tutorial_plume_on_slope.
999    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1000    o calc_gw: true flux-form, account for horizontal grid spacing.
1001      update rotating_tank results, but not plume_on_slope (affected at
1002      truncation level, 11 digits).
1003    
1004    checkpoint58l_post
1005    o calc_gw:
1006     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1007     - remove side-drag for now (need to fix it); update plume_on_slope results.
1008     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1009    o commit code to make SST/SSS weights spatially variable
1010      (based on either variable in-situ or variable initial T/S weights)
1011    o pkg/ecco:
1012      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1013        now based on horizontally varying weights wthetaLev, wsaltLev
1014      * cost_averagesflags now returns year indices in addition to day, month
1015      * sflux balance is performed on annual basis
1016        (sflxumm, sfluxmm2, bal_sfluxmm)
1017      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1018        including separate counting and multipliers
1019    o pkg/rbcs
1020      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1021    
1022    checkpoint58k_post
1023    o testreport:
1024     - always build in dir. "build" (if not there, mkdir build instead of building
1025       & running in input)
1026     - run in dir run (if it exists), in build otherwise.
1027     - call prepare_run (if input/prepare_run exists)
1028     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1029    o pkg/exf modifications to interpolation and rotation routines for more
1030       reasonable treatment of North Pole singularity: for tracers North Pole
1031       value is set to northernmost zonal-mean value, for zonal velocity it is
1032       set to zero, and for meridional velocity it is set to northernmost value.
1033    o pkg/exf/exf_check_range.F
1034     - add tile index to diagnostics and move stop statement to the very
1035       end of the routine.
1036    o pkg/diagnostics: (diagnostics_main_init.F)
1037      define title of isomorphic variables according to the current config.
1038    o pkg/thsice with pkg/seaice dynamics:
1039    - fix domain of computation (interior only, required for exf) and do exchanges
1040    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1041    o towards a standard way of dealing with multi-threading in MONITOR
1042      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1043    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1044       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1045    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1046    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1047    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1048       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1049    o tracer advection:
1050     - clean-up and simplify calc_common_factors.F
1051     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1052       advection subroutine (but still not used within DST advection S/R)
1053    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1054    
1055    checkpoint58j_post
1056    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1057      from file (collects calls previously in FORWARD_STEP)
1058    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1059    o adjoint store dir. adjusted accordingly
1060    o genmake2
1061      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1062    
1063    checkpoint58i_post
1064    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1065      on wind stress (SEAICEstressFactor defaults to 1.)
1066    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1067      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1068    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1069      on CS-grid: no longer loosing mass.
1070    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1071    o pkg/ggl90: fix sloppy output and fix a bug
1072    o pkg/seaice: added SEAICEuseEVPpickup parameter
1073      - Set to false in order to start EVP solver with
1074        non-EVP pickup files when using SEAICEuseEVP
1075      - fix sign error in diffusion in seaice_calc_rhs
1076    
1077    checkpoint58h_post
1078    * Modifications for bottom topography control
1079      o replace hFacC by _hFacC at various places
1080      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1081      o add non-self-adjoint cg2d_nsa
1082      o update autodiff support routines
1083      o re-initialise hfac after ctrl_depth_ini
1084      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1085    * Adding verification for 5x5 box (4-layer) bottom topography control
1086    
1087    checkpoint58g_post
1088    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1089       used for mean seasonal cycle, mean diurnal cycle); add an example
1090       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1091    o pkg/ggl90:
1092      - add parameter (minimum surface kinetic energy)
1093      - fix bug (avoiding division by zero)
1094    o couple pkg/thsice to pkg/seaice:
1095      - modify advection in seaice to accomodate new scalar fields to be advected
1096      - only muliDimAdection scheme work with seaice/thsice
1097      - mapping of thsice-variables to seaice-variables, back and forth
1098      - does not break the verification experiments, but does not give the
1099        desired results either
1100    o pkg/seaice
1101      - make (default) second order advection a bit less confusing?
1102    
1103    checkpoint58f_post
1104    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1105      to pkg/seaice):
1106      - new routines thsice_map_exf and thsice_get_exf provide the interface
1107      - add an additional formal parameter to thsice_solve4temp
1108    o pkg/exf:
1109      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1110      - correct Stefan-Boltzmann constant
1111      - new parameter for longwave surface emittance
1112      - separate some stuff from exf_bulkformulae into new routines  
1113        exf_radiation, exf_wind
1114      - add new parameters and constants: longwave emissivity for ocean, ice
1115        and snow, evaporation parameters over ice
1116      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1117        either wind from stress or stress from wind
1118    o pkg/thSIce:
1119    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1120    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1121       and THSICE_CALC_THICKN
1122    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1123    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1124      to make debugging easier.
1125    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1126    o pkg/bulk_force:
1127      - clean-up comments and parameters ;
1128      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1129    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1130      generate new output for test-experiment: aim.5l_cs.thSI
1131    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1132      testreport accordingly
1133    
1134    checkpoint58e_post
1135    o SEAICE_CGRID adjoint done
1136    o R_STAR adjoint implemented.
1137      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1138      * need to sort out init. of h0facc, etc.
1139    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1140      to be able to use it in pure forward.
1141    
1142    checkpoint58d_post
1143    o upgrade simple test-experiment to tutorial example:
1144     step.1: duplicate the experiment and (step.2) will remove the old copy.
1145      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1146      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1147      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1148      tutorial_global_oce_biogeo    <- copy of dic_example
1149      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1150      tutorial_plume_on_slope       <- copy of plume_on_slope
1151      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1152      tutorial_global_oce_optim     <- empty for now (David ?)
1153      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1154     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1155    o correct a sign problem in cost_scat.F
1156    o obcs and ptracers: fix boundary conditions for advections schemes
1157      with larger stencil
1158    o thsice adjoint: start
1159    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1160      completeness
1161    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1162      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1163    o ptracers adjoint:
1164      * avoid extensive recomputatations
1165      * fix missing re-init. of gptr (missed by TAF)
1166    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1167      me to turn off the excessive output to STDOUT that this package produces
1168    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1169      and add those terms in Vector-Invariant formulation.
1170    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1171      if the control period (xx_hfluxperiod etc) is 0
1172    o in profiles pkg, clean routines and fix details
1173    o in ecco pkg, reading ssh data:
1174      fix problem in case the model does not start at iter0=0
1175    o fix mnc-pickup/restart for ptracers
1176    o new package prifiles:
1177      code to compute profile-based cost by Gael Forget
1178      (modifs in ecco, ctrl, autodiff)
1179    o Benign bug fix in initialization (spotted by M. Mazloff) of
1180      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1181    
1182    checkpoint58c_post
1183    o adjoint: finish NLFS adjoint and provide reference output in
1184      verification/global_ocean.90x40x15/results_ad_nlfs
1185    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1186      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1187      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1188      with SEAICE_CGRID defined.
1189    o move calendarDumps from "data" to "data.cal" and clean-up the code
1190      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1191    o add useEXF & useCAL flags (for now, set in hard-coded way)
1192    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1193      (were missing in NH mode, and wrong in quasihydrostatic mode).
1194      waiting for Chris updated version of calc_gw to add those CALLs.
1195    o fix bug in quasihydrostatic S/R ;
1196      add a test for this option: global_ocean.90x40x15.qshyd
1197    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1198      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1199    o add on/off flag useOffLine for package OFFLINE
1200    o seaice:
1201      - modify advection so that it works also on the C-grid
1202      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1203        problem in multi-tile runs with C-grid
1204      - add flags for clipping ice velocities and/or masking solver forcing
1205      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1206        C-grid solver
1207      - added a few comments to seaice_diffusion.F
1208      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1209        are now exclusive)
1210      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1211        required re-ordering the code a little:
1212       + make DAIRN global variable (defined in SEAICE)
1213       + move computation of the viscosities eta and zeta into a new separate
1214         routine (because I need to recompute them in seaice_ocean_stress.F)
1215    
1216    checkpoint58b_post
1217    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1218      update output.txt of exp. aim.5l_cs.thSI
1219    o various mnc cleanups and improvements:
1220      + shrink lookup tables by factor of ~4
1221      + better error reporting when running out of lookup space
1222      + able to handle longer path/file names (up to 500 chars)
1223    o adjoint:
1224      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1225      - TBD: "hidden" mom_vecinv recomp. in dynamics
1226    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1227     (allow to differentiate between forcing components using new integer flags:
1228      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1229     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1230    o ecco
1231      - enable trend removal from SSH anomaly obs.
1232    o adjoint
1233      - a fix for PmEpR when #undef EXACT_CONSERV
1234      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1235      - try to fix "hidden" recomp. in forward_step for NLFS
1236        (NLFS seems broken sometimes after I checked it in)
1237    o seaice:
1238     - add c-grid version of the dynamic solver:
1239       + three new routines that are the c-grid substitute lsr, dynsolver
1240         and ostres
1241       + put a few fields that were local to dynsolver into global common
1242         blocks, so that I can move the computation of stresses etc into
1243         seaice_lsr (saves coding but may break the adjoint).
1244     - replace more hardwired parameters by runtime parameters
1245     - add ice masks that mask the rhs of the implicit solvers where there
1246       is no ice (commented out in seaice_dynsolver, because i am not sure
1247       if this works properly), eventually this should replace the clipping
1248       of ice velocities in seaice_dynsolver to +/-40cm/s.
1249    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1250      include it only where its needed
1251    o move balancing of fluxes before the call of external_forcing_surf
1252    o seaice:
1253      - correct units of turning angles (now they are really in degrees)
1254      - move computation of GWATX/Y out of main routine into dynsolver
1255      - initialize GWATX/Y in seaice_init
1256    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1257      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1258    o seaice: add runtime flags for turning angles (default to zero)
1259    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1260      and trend from exf forcing and ctrl control adjustments
1261    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1262      (since checkpoint57x_post)
1263    o change the default rotation period to 86164.s = the Earth rotation
1264    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1265      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1266    o seaice advection: add code for choosing between the default (2nd order
1267      central differences) and multiDim advection schemes provided by
1268      pkg/generic_advdiff
1269    o seaice:
1270      - removed all references to SEAICE_GRID.h fields from
1271        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1272        (cubed-sphere configuration will change a little)
1273      - grid computations in seaice_init are obsolete now.
1274      - cleaned up code a little so that is easier to read (hopefully).
1275      - added new (better?) discretizations of default advection and diffusion
1276        (turn on with SEAICEuseFluxForm)
1277      - replace 1 in 3d global fields by kSurface in growth.F
1278      
1279    checkpoint58a_post
1280    o seaice:
1281      - bug fix in advect.F
1282    o shelfice:
1283      - separate shelfice load anomaly from pload (breaks with time
1284        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1285        Its default is 0., but it may be computed more cleverly from (unknown)
1286        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1287        done offline. A good approximation of the pressure load anomaly is
1288        necessary to avoid large initial adjustment processes underneath
1289        deep-reaching shelfice.
1290      - small fix in ISOMIP shelfice_thermodynamics
1291      - add more sophisticated thermodynamics of Hellmer (1989), this is
1292        now the default
1293      - give a few constants more intuitive names
1294    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1295      if bulk formulae are used in long integration (especially EmPmR). Turn
1296      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1297      if balancePrintMean, the imbalance that is substracted is printed to
1298      STDOUT.
1299    o fix bug (typo) in obcs_apply_eta.F
1300    o add a new package shelfice which enables us to model the circulation
1301      underneath shelf-ice with draughts of hundreds of meters.
1302     - works
1303     - to do: + include improved thermodynamics
1304              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1305                instead of new field kTopC
1306              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1307                instead of new field R_shelfIce and new code in ini_depth.F
1308                and ini_mask_etc.F?
1309              + adjust vertical mixing schemes?
1310    o seaice pkg:
1311     - add a cpp-flag to include a simple formula for a salinity dependent
1312       freezing point of sea water at the surface
1313     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1314       meridional stresses are now different (and hopefully correct)
1315    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1316       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1317       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1318    o pkg/diagnostics: add options and parameters for regional-statistics
1319       diagnostics ; define regions by reading a region-mask from a file
1320       (might add other options later)
1321    o pkg/bulk_force:
1322     - add option and parameters to use AIM surface-flux formulae.
1323     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1324       others forcing fields (defined in PARM05, parameter file "data") are loaded
1325       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1326     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1327     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1328     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1329       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1330     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1331    
1332    checkpoint58
1333    o add "--embed-source" option to genmake2 which, when the supporting
1334      tools can be compiled (as determined by genmake2) will turn on the
1335      embed_files package which then embeds the entire MITgcm source code
1336      (*.[fFhc] + Makefile) used for the build within the executable
1337      - requested by CNH but off by default
1338      - adds a paltry <9MB to the mitgcmuv executable in most cases
1339      - only writes the output when useEMBEDSRC in eedata is true
1340    o clean up 3-dim. relaxation codes:
1341      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1342      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1343      * Thanks to Tom Haine for testing!
1344    
1345    checkpoint57z_post
1346    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1347      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1348    o fix the pickup behavior for obcs in combination with ptracers
1349    o fix a bug in ptracers_external_fields_load
1350    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1351      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1352    o transfered surface NH pressure to eta field (if exactConserv).
1353    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1354         and update lab_sea output.txt file.
1355    o completing 3-dim. relaxation code: additional term
1356         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1357      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1358      * At compile time, in "EXF_OPTIONS.h" set
1359          #define  ALLOW_CLIMTEMP_RELAXATION
1360          #define  ALLOW_CLIMSALT_RELAXATION
1361      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1362          tauThetaClimRelax3Dim = 15552000.0,
1363          tauSaltClimRelax3Dim  = 15552000.0,
1364      * 3 cases:
1365          1) Use a constant-in-time 3-dim. field
1366          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1367          3) Real-time relax. to time-evolving prescribed field
1368    o Adding Laplacian-type smoothness constraint on
1369      initial and boundary (forcing) controls (ic, bc)
1370      * enable at compile-time via
1371        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1372      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1373      * Absolute scale somewhat unclear so far
1374      * no area weighting was included since no other cost term does so far
1375    
1376    checkpoint57y_post
1377    First step for a NLFS adjoint
1378    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1379    o new init. routines for calc_r_star, calc_surf_dr
1380    o still need to deal with ini_masks_etc
1381    o testreport seemed happy
1382    checkpoint57y_pre
1383    
1384    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1385    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1386    o add new offset feature to offline pkg (plus minor cleanup)
1387    o cfc fixes for final year of integration
1388    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1389      be in GCHEM_OPTIONS).
1390    
1391    checkpoint57x_post
1392    o fix testreport Pb in multiple test experiment.
1393    o cleanup our namelist syntax in verification:
1394      - make it more F95 standards compliant (some work still needed)
1395      - allows the vast majority of our tests to work with gfortran
1396    o Non-Hydrostatic:
1397     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1398     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1399    o Allow to apply AB on T,S rather than on AB(gT,gS):
1400     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1401     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1402       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1403     - need a "clever" read_pickup to restart from the other AB formulation
1404    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1405    o remove some unused variables (reduces number of compiler warnings)
1406    o adjoint
1407      * Disable useVariableViscosity for adjoint for time being
1408        (there are a number of extensive recomputations)
1409      * Initialize certain variables needed for adjoint
1410    
1411    checkpoint57w_post
1412    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1413                 fix the singleCpuIO RS version of MDSWRITEFIELD
1414       and add a WARNING if using globalFiles=T with multi-processors.
1415    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1416      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1417    o tracer advection scheme:
1418      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1419       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1420       was not very convenient).
1421      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1422       (further tests needed for the implicit DST & Flux-Limiter schemes).
1423    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1424      and sRef for convenience, handy, when you want to initialize
1425      ptracers in a large domain with a constant non-zero value. Also,
1426      untangle ptracers_init.F a little.
1427    
1428    checkpoint57v_post
1429    o change dome exp. to use variable viscosity in side-drag terms.
1430    o remove all the files from the cfc_offline test since they are now
1431      incorporated into tutorial_cfc_offline which has been producing
1432      identical results for a few days of testing
1433    o add new parameter: sideDragFactor to enable half-slip-side BC
1434      and change side-drag S/R to use viscosity from mom_calc_visc
1435      (can switch back by setting sideDragFactor=0.); affects results at
1436      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1437       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1438    o vorticity & strain are now computed without masking, to account for
1439      no-slip-side BC in variable viscosity calculation ; mask is applied
1440      anyway later on, before computing advection/coriolis terms.
1441    o modify exp4 to test new obcs support for reading from external files
1442      and for passive tracers
1443    o fix behavior of ptracers_monitor when monitor output is written to a
1444      netcdf-file; still not independent of monitor.F (writes in the same
1445      file).
1446    o change default value of tRef (put a uniform, meaningful value for ocean
1447      & atmos) and initialize sRef (was missing, as Martin mentioned).
1448    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1449      to be proportional to enstrophy dissipation length.  Thus,
1450       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1451      This is now consistent with Smagorinsky and with the manual.
1452    
1453    checkpoint57u_post
1454    o OBCS and PTRACERS: add open boundary support for passive tracers
1455      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1456        OB-values from file; this is not different from the way theta and salinity
1457        are treated
1458      - however, Orlanski-radiation conditions are not supported, and the model
1459        will stop if you use pTracers and Orlanski at the same time.
1460      - beefed up the rountine obcs_external_fields_load: now only those open
1461        boundary values are overwritten with values from files for which there
1462        are really files, otherwise the OB-fields remain untouched. This makes
1463        it possible to use different OBs at different ends of the domain (as
1464        with EXF)
1465    o reduce number of exch calls in shap_filt (s2).
1466    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1467      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1468    
1469    checkpoint57t_post
1470    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1471    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1472      same truncation, independent of the face number: affects affects several
1473      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1474    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1475      note that biharmonic viscosity + no-slip was not tested in any experiment.
1476    o fix bug in non-linear free-surf side-drag ; generate new output for
1477      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1478    o make mnc honor the writeBinaryPrec flag for most kinds of output
1479    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1480    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1481      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1482    o add brackets in multi-terms sum to get same truncation, independent of
1483      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1484      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1485    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1486      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1487      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1488      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1489      Suggested values of viscosity parameters found in mom_calc_visc.
1490      Many new viscosity diagnostics available.
1491    
1492    checkpoint57s_post
1493    o Add clearing-house for viscosity calculations, mom_calc_visc and
1494      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1495      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1496      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1497      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1498      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1499      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1500      ViscAhStrain and viscAhTension are now retired.
1501    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1502    o In response to JMC's bug report, genmake2 now ignores any soft-links
1503      that it finds in the *current* directory when searching for files.
1504      Soft-links found in any other source directories will still work as
1505      they did before.
1506    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1507      a C routine to unlimit the stack size
1508    o mnc-ify pkg/aim snapshot vars
1509    o mnc-ify pkg/land as requested by Daniel
1510    o various changes to mnc including:
1511      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1512      - output can now be grouped so that all files within a group
1513          change the ITER portion of their names in lock-step together
1514      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1515          and works with both EXCH1 and EXCH2 (but needs more testing)
1516      - writing works for all verification test cases w/ g77 on Linux
1517    
1518    checkpoint57r_post
1519    o make MNC variable initialization happen earlier
1520    o add diagnostics for (almost) each term of the momentum Eq.
1521    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1522    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1523    o remove MINIMAL_TAVE_OUTPUT option ;
1524      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1525    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1526      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1527    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1528    o add time-dependent SST, SSS control
1529    o cost terms in ecco/ modularized (new cost_generic.F)
1530    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1531    o new infrastructure for seaice model vs. obs misfits in seaice/
1532      * driver from the_main_loop.F is seaice_cost_driver.F
1533      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1534      * gradient check in Exp. 6a of natl_box_adjoint/
1535    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1536      (see README file)
1537    
1538    checkpoint57q_post
1539    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1540    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1541      - bug was reported by Jean-Michel and Ian Fenty
1542    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1543      update exp. cpl_aim+ocn output.
1544    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1545      Needed for high-res. runs with large global files
1546      to be able to limit tapelev size
1547    o Changed some tests for adjoint:
1548      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1549      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1550      * global_ocean.90x40x15/ back to default 3-level checkpointing
1551    o Modifications to enable scripted COMMON to MODULE conversion
1552      * verification/OpenAD/code/ has necessary scripts and description;
1553      * converts, compiles and runs successfully;
1554    
1555    checkpoint57p_post
1556    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1557    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1558      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1559    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1560    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1561      (was already the case for dissipation with mom_vecinv,
1562       and also the case for grad.PhiHyd when staggered-timeStep)
1563      This will allow to put dissipation out-off the AB time-stepping.
1564     Unfortunately, affects truncation error. Update output of exp. that "fails"
1565      (cg2d matching number) and leave the others for later: front_relax(10),
1566      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1567      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1568    
1569    checkpoint57o_post
1570    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1571      (2) its ready to be documented during the 20050801 DocFest
1572    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1573      for ideal_2D_oce and lab_sea on linux_ia32_g77
1574    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1575      in global1x1_tot/code_seaice_adj to access indices 32, 33
1576      (worth another tag)
1577    
1578    checkpoint57n_post
1579    o adding precip control xx_precip 32
1580    o adding swflux control xx_swflux 33
1581    o Replacing 10 forcing penalty cost routines by 1 generic.
1582    o Implementing partitioning in time-mean and variable adjustment
1583      for atmos. state.
1584    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1585    o in natl_box_adjoint:
1586      * updated exp 1 to 10
1587        (but does not have time-mean vs. variable split results yet)
1588    o updated global1x1/*_seaice_adj/
1589      to incorporate latest changes
1590    o enable useSingleCpuIO for mdsio vector routines
1591      (applies in particular to tapelev I/O)
1592    o removed inefficient K-loop in all active_file*control*.F
1593    
1594    checkpoint57m_post
1595    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1596      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1597    o pkg/exch2: filling of face-corner halo regions is optional
1598      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1599    
1600    checkpoint57l_post
1601     tag before updating tutorials (pre-release-2)
1602    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1603       for output and interpolation of input fields onto model grid)
1604    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1605       Affects results of exp. rotating_tank ; update output.txt.
1606    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1607          and taking the square quantity and/or using a fraction-weight field.
1608    o fix aim_diagnostics_init.F mate numbers.
1609    o add mnc output capability to diagnostics/diagstat and update
1610      our cvsignore files for the ACSII output generated
1611    
1612    checkpoint57k_post
1613    o lab_sea now uses diagnostics package and provides a suite of
1614      new EXF diagnostics output.
1615    
1616    checkpoint57j_post
1617    o exf
1618      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1619        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1620        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1621      * extended diagnostics output
1622        - now includes all EXF variables
1623        - hs, hl moved to common block
1624        - separate S/R for diagnostics, called after ctrl vector is added
1625        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1626        - EXFqnet contains true Qnet (i.e. includes qsw)
1627      * updated verif. lab_sea, global_with_exf
1628      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1629        to ensure that diagnostics sees a true EXFqnet
1630    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1631    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1632      several times with different frequencies.
1633    o mnc-ify the thsice package as requested by Daniel Enderton
1634      - the monitor--MNC output needs work
1635      - many attributes need to be added (most are currently blank)
1636    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1637      - many attributes need to be added (most are currently blank)
1638    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1639    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1640    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1641      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1642         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1643    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1644     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1645    
1646    checkpoint57i_post
1647    o Diagnostics package was changed: diagnostic allocation is now deactivated
1648      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1649    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1650      add 1rst Order upwind vertical Shear.
1651    o add a quick fix for A/B checkpointing in OFFLINE mode
1652    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1653      end-run around the C/Fortran linking horror in eesup/src/timers.F
1654    o added pkg/runclock: allows user to terminate run based on wall clock
1655    o added non-hydrostatic scaling parameter: nh_am2
1656    o pkg/my82: futile attempt to make results compiler-independent by adding
1657      some "_d 0", etc. no effect.
1658    o for mnc output, fill the 'T' coordinate var with myTime and create a
1659      separate 'iter' variable for iteration count
1660    o pkg/diagnostics:
1661      add new capability: output of Global/Regional & per-level statistics ;
1662      tested against monitor output (including land & thSIce) on various exp.
1663    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1664    
1665    checkpoint57h_done
1666      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1667      data.diagnostics, data.gchem, data.ptracers) is done.
1668    
1669    o pkg/diagnostics: prepare for Global/Regional statistics.
1670      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1671    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1672      and rename it: DIFFERENT_MULTIPLE
1673    
1674    checkpoint57h_post
1675    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1676    o pkg/diagnostics: change output frequency, now in seconds (instead
1677      of Nb of iterations). This requires to change data.diagnostics.
1678    checkpoint57h_pre
1679    
1680    o in mnc, let the user create the output dir if both mnc_outdir_date
1681      and mnc_outdir_num are false
1682    o add fflags() to pkg/diagnostics which allows one to specify, on a
1683      per-file basis, the file precision [default behavior is unchanged]
1684    o added diagnostics to pkg/kpp, including computation of mixed layer
1685      depth based on a temperature/density criterion
1686    o updated verification/natl_box to test the new pkg/kpp diagnostics
1687    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1688    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1689    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1690      not mnc -- this mistake was found by JMC and is now corrected
1691    
1692    checkpoint57g_post
1693    o add Adams-Bashforth 3rd Order time stepping:
1694      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1695      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1696    checkpoint57g_pre
1697    
1698    o make lambda[Theta,Salt]ClimRelax spatially varying
1699      (default remains spatially uniform constant based on tau)
1700    o added new control variables
1701      * init. uVel, vVel, etanN
1702      * lambda[Theta,Salt]ClimRelax
1703    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1704      (suggested by G. Forget)
1705    
1706    checkpoint57f_post
1707    o add parameter "baseTime" = model base time = time at iteration zero
1708      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1709      account for baseTime shift
1710    o move Coriolis arrays from PARAMS.h to GRID.h
1711    checkpoint57f_pre
1712    
1713    o mnc-ifying the seaice package
1714    o introduced an alternative length scale calculation for use in the limiting
1715      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1716    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1717    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1718      as well as grad(vort3).  Made it compatible with both approximate form
1719      for the cubed sphere and full form of these gradients.  Added flag
1720      useFullLeith to select between approximate and full form.  
1721    o add "d0" in getcon.F to reduce differences between compilers/platforms
1722      update output.txt of exp. fizhi-gridalt-hs
1723    o change port_rand funtion to allow to set the seed.
1724    o fix obscure MNC bug involving conversion between reals and integers
1725      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1726        new version is now more standards-compliant
1727    o adjoint-related modifications
1728      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1729      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1730      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1731    
1732    checkpoint57e_post
1733    o Adding eddy stress controls a la Ferreira et al.
1734    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1735    
1736    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1737      update output.txt of exp. fizhi-gridalt-hs
1738    o add more "Z" dimensions and associated coordinate vars to MNC
1739    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1740    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1741      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1742      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1743      months and years.  Requires pkg/cal.
1744    o diagnostics: add pickup functionality
1745      - off by default for backwards compatibility
1746      - current version only uses MDSIO -- MNC will be added
1747    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1748    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1749    
1750    checkpoint57d_post
1751    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1752    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1753      output from the diagnostics package
1754    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1755    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1756      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1757    o add coordinate variables to the MNC output from the diagnostics package
1758    o change MNC-flags default value: true when useMNC=TRUE
1759    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1760      the ability (off by default) to read the grid information using MNC
1761    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1762    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1763    o do snap-shot diagnostics at the middle of the time-interval (instead of
1764      at the end).
1765    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1766      new test for AIM with thSIce + slab-ocean
1767    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1768    o move state variable diagnostics to the beginning of the time step ;
1769      (note: still needs some work specially for snap-shot diagnostics)
1770      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1771    
1772    checkpoint57c_post
1773    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1774    o generate new output.txt files on faulks with g77 & the new -ieee option
1775    checkpoint57c_pre
1776    
1777    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1778      update output.txt of exp. global_ocean.90x40x15
1779    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1780      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1781    o add saltFlux(+File) forcing capability with periodicExternalForcing
1782    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1783    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1784    o improvements for the MNC output from DIAGNOSTICS:
1785      - correct handling of the unlimitied dimension
1786      - all dims now have associated coordinate variables
1787      - variables located at U, V, and Corner ("Z") points are now written
1788        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1789        *all* data points are output
1790    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1791    o added pkg/seaice/seaice_monitor.F
1792    o mdsio_readfield.F can now read files visible only to master MPI process.
1793    o pkg/seaice: some test code for ice-modified ocean stress
1794    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1795      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1796      spurious negative numbers for precipitation and humidity.  Will cause
1797      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1798    o pkg/ctrl/
1799      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1800        May be enabled via doPackDiag
1801      *  introduce z-scaling of
1802         + gradient (doZscalePack) and
1803         + control (doZscaleUnpack)
1804    o pkg/mdsio/
1805      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1806      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1807    
1808    checkpoint57b_post
1809    o simplify options in diagnostics_fill arguments (remove weird combinations)
1810    o fix MNC coordinate variables so that they now contain per-face index
1811      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1812      general, EXCH2 grids are only aligned to a "local" coordinate system
1813    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1814    o Implement instantaneous output within pkg diagnostics:
1815      setting a negative frequency in data.diagnostics produces
1816     "snap-shot" output (as opposed to time-average if freq > 0)
1817    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1818      NOTE: change ptracer diagnostics name: use 2 characters to work with
1819            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1820    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1821      becomes the coordinate variable for the 'T' dimension
1822    o add CF-style coordinate variables to MNC
1823      - just a first cut:  numbers are meaningless on the cubesphere and
1824        missing along the T axis but otherwise it works!
1825    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1826    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1827    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1828      this is based directly on what the model compute, so that the content of
1829      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1830    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1831    o clean up build options files for SunOS, in particular
1832      - remove -traditional from xmakedepend
1833      - change -xarch=v9 to -xarch=native for f77
1834      - restore use of make (not gmake)
1835      - add CC=gcc if using g77
1836    o changes per discussion of AM, JMC, & EH3 today:
1837      - move redundant "grid" variables out of "state" -- in preparation of
1838        creating proper CF-style coordinate variables and in recognition
1839        that any/all grid variables can be easily copied (eg. w/NCO) from
1840        the grid files into any of the other NetCDF files
1841      - *always* output grid variables with MDSIO (this will eventually be
1842        changed)
1843      - output MNC grid file if useMNC is true
1844    o every instance of _END_MASTER() has been found and replaced with
1845      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1846      preprocessors
1847    o re-arrange diagnostics pkg initialisation:
1848     - allow each package to extend the available diagnostics list
1849     - add some checking and fix small problems (multi-threaded, ...)
1850     - new S/R diagnostics_fill (replace fill_diagnostics):
1851       look through the short list of active diag. (instead of the long list)
1852       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1853    
1854    checkpoint57a_post
1855    o this set of changes restores TAMC compatibility
1856      tested for global_ocean.90x40x15 adjoint on trough
1857      (what a pain)
1858    
1859    checkpoint57a_pre
1860    o some modifs in tools/build_options for sunos
1861    o call ctrl_pack for ctrl at end for optimcycle=0
1862    
1863    checkpoint57
1864    o add horizontal bi-harmonic viscosity for vertical velocity
1865      - new parameter viscA4W (defaults to viscA4)
1866      - affects only non-hydrostatic code
1867      - to be done: no-slip lateral boundary conditions
1868    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1869    o implement Implicit Vertical advection for pTracers
1870    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1871      (implemented also for implicit vertical diffusion & advection)
1872    o OBCS: extend application of tracer open boundary conditions
1873      to a strip beyond the boundary of width Olx/Oly
1874    o add call monitor to TAF set of required calls (flow directives)
1875      and include in natl_box_adjoint
1876    o untangle a few ifdefs related to cost, ctrl, autodiff
1877      untangel a few ALLOW_ECCO_OPTIMIZATION
1878    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1879      (theta2, salt2 in ecco_cost_weights)
1880    
1881    checkpoint56c_post
1882    o OBCS as control variables
1883      - update ctrl_ad_diff.list, obcs_ad_diff.list
1884      - remove balance of obcs controls from default
1885      - fix index bug nobcs in ctrl_init
1886      - fix dummy fields filen in ctrl_pack
1887      - add dummy weights for obcs
1888    o lsopt: comment out fort.94 output
1889    o optim:
1890      - remove unnecessary header files
1891      - adjusted namelists
1892      - add xerbla.F to Makefile
1893    o exf:
1894      - multiple modifications of exf_check_range
1895      - unit change in exf_init_runoff from [m/year] to [m/s]
1896    o mdsio:
1897      - i/o-vector change debugLevel from debLevA to debLevB
1898    
1899    checkpoint56b_post
1900    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1901      is called from DO_THE_MODEL_IO
1902      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1903      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1904      - clean up PTRACERS_WRITE_TIMEAVE a little
1905    o add another verification experiment that tests both the cfc-pkg and
1906      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1907      reactive tendencies treated inline with regular timestepping
1908    o testreport previously did a lousy job of comparing small numbers, so
1909      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1910      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1911      testreport.
1912    o ptracers_monitor: bug fix for MPI
1913    
1914    checkpoint56a_post
1915    o GCHEM: finish reorganizating the package
1916      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1917        (introduces another 3D-array for each passive tracer, but only if
1918        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1919        gchemTendency is not needed because the timestep is done separately)
1920      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1921      - GCHEM is now---more or less cleanly---separate from PTRACERS
1922      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1923        so clear to me how that should be done in a general way.
1924    o CFC: improve formatting of output in CFC_ATMOS
1925    o PTRACERS:
1926      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1927        that ALL experiments with ptracers enable can be checked. This makes
1928        GCHEM_MONITOR obsolete.
1929      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1930        monitorFreq
1931      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1932    o add PTRACERS (PTR0[1-5]) to testreport output
1933    o exf_check_range:
1934      * default changed to .TRUE.
1935      * will check values for niter0 if debLevA, every timestep if debLevB
1936      * STOP in exf_check_range if 'out of range'
1937      * range chosen generous to allow for potential extema
1938      TBD: a version with stricter range
1939           permitted range would be runtime parameters
1940  o GMredi:  o GMredi:
1941    - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;    - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1942    - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.    - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
# Line 11  o GCHEM: Line 1945  o GCHEM:
1945    - move call to GCHEM_FORCING_SEP, so that it is now called before    - move call to GCHEM_FORCING_SEP, so that it is now called before
1946      the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP      the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1947    - introduced a useGCHEM runtime flag and applied it everywhere.    - introduced a useGCHEM runtime flag and applied it everywhere.
1948      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1949        this flag is now only visible within GCHEM-pkg routines.
1950      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1951        be replaced by a 3D array that is computed before thermodynamics; for
1952        this, the tracer ID iTracer had to be included into the parameter list
1953        of ptracers_forcing
1954      - set up forward_step to call gchem_forcing, that will replace
1955        gchem_forcing_int in ptracers_forcing
1956      - cleaning up
1957  o small cleaning of exch2: remove files that are also in eesupp/src  o small cleaning of exch2: remove files that are also in eesupp/src
1958    
1959  checkpoint56  checkpoint56

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