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revision 1.638 by heimbach, Thu Mar 23 19:59:59 2006 UTC revision 1.1012 by jmc, Sat Aug 2 23:12:23 2008 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o exch2:
8      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
9      - no longer depend on the order sequence (N,S,E,W).
10      - 3rd exchange no longer needed (tested with 24 tiles).
11      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
12      - exch_UV_A-grid readily available (but not yet tested).
13      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
14      (both are no longer needed) in exch_uv: no effect in forward run; but
15       get truncation error differences with adjoint exch.
16    o exch2:
17     - change index-bounds storage (moved from target to local tile,
18       more intuitive this way) ; rename/remove some variables.
19     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
20    
21    checkpoint61a
22    o exch2/matlab-topology-generator:
23      fix bug in index bounds for N-S internal exchange (hard to tell if this
24      had any effect on the solution).
25    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
26      is exceeded
27    o testreport: modify syntax of awk, so that it works also with
28      awk, and not only with nawk and gawk
29    
30    checkpoint61
31    o autodiff
32      Change default for TAF usage by removing argument '-nonew_arg'
33      This changes TAF subroutine argument list (ordering of active var.)
34      Omission of this flag leads to incompatibility w.r.t. TAMC
35      To restore TAMC-compatibility, need following modifs:
36      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
37      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
38      Tested TAF version is 1.9.22
39      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
40    
41    checkpoint60
42    --->>> This is the last checkpoint for which generating the adjoint
43    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
44    --->>> by default.
45    --->>> Future checkpoints will ommit this flag by default.
46    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
47    o pkg/grdchk: Add gradient check to etan0 perturbations.
48    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
49    o pkg/autodiff: more flexibility in zeroadj.
50      model/src: modifying do_oceanic_phys.F accordingly.
51    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
52    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
53      special setup of gmredi for which the adjoint is stable
54      enough for parameter optimization.
55    o bridging the gap between eddy stress and GM.
56      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
57          along with a change in CPP option (now ALLOW_EDDYPSI).
58      -> when using GM w/ GM_AdvForm:
59          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
60          is applied either in the tracer Eq. or in momentum Eq.
61          depending on data.gmredi (intro. GM_InMomAsStress).
62      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
63      The key modifications are in model/src/taueddy_external_forcing.F
64      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
65    
66    checkpoint59r
67    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
68      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
69      fix option to read coriolis(@ cell-corner) from files with CS-grid.
70    o pkg/mnc: add some attributes to standard 1D-coordinate variables
71    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
72      mass points, when using mnc for output
73      - add runtime parameter (missing_value, missing_value_int) to override
74        default (which is the value of getcon('UNDEF'))
75    o pkg/mnc: prepare mnc for the actual use of missing values with the
76      diagnostics package: small fix in mnc_cw_readwrite.template and more
77      initialisation of never used fields
78      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
79      versions
80    o pkg/thsice/thsice_ini_vars.F added default initial values so that
81      thermodynamics sea ice solver does not blow up when some initial fields
82      are missing.
83    o move from external_forcing_surf.F to ini_forcing.F
84      the p-coord. hack consisting in using pLoad to set phi0surf ;
85      update output of tutorial_global_oce_in_p (affected @ truncation level).
86    o Freshen up a bit hs94.1x64x5, notably:
87      remove rotationPeriod and tRef=5*0. (adjoint only), and add
88      exactConserv=.TRUE.
89    o pkg/generic_advdiff:
90      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
91      applies to files where Temperature & Salinity 2nd Order moments are used.
92    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
93      this uses a dynamically allocated internal state data structure
94      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
95      and requires a fortran 90 compiler
96    
97    checkpoint59q
98    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
99       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
100    o Refresh tutorial_global_oce_biogeo, notably:
101      - change bathymetry (put back seamounts in ACC, use hFacs)
102      - change EOS (POLY3 --> JMD95Z)
103      - use Bryan-Lewis vertical diffusivity
104      - use multidimensional advection
105      - remove old virtual virtual in dic pkg, now done through ptracer pkg
106      - change a couple of parameters in dic pkg
107    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
108    o pkg/obcs: change default to OBCSfixTopo = .true.,
109      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
110      - replace "debugMode" with "debugLevel .GE. debLevB"
111    o implementation of TAF directives for gchem,cfc,dic
112    o remove "exp5" (replaced by tutorial_deep_convection).
113    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
114      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
115      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
116      --> changes results in exp4, seaice_obcs
117    o tutorial_deep_convection :
118      update the set-up and increase resolution and domain size ; start
119      from pseudo initial conditions = output at t=120mn in order to see
120      something happening when running testreport.
121    o pkg/seaice: add os7mp as an advection scheme
122                  add check for advection schemes
123                  add a flag for restoring T and S underneath sea ice
124    o pkg/my82: add netcdf-support and diagnostics
125    o thsice pkg:
126      - Now hsMax limits snow height by turning it into ice following
127        flooding scheme (and now conserving energy)
128      - Slight rewriting of the formula in thsice_calc_thick.F
129      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
130      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
131    
132    checkpoint59p
133    o gchem / dic / cfc :
134      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
135      - add new parameter files: "data.dic" & "data.cfc" ;
136      - various re-arrangement in initialisation & header file ;
137      - fix tutorial_global_oce_biogeo for multi-threaded test.
138    o pkg/dic: test for "pickup_dic" file when restarting ;
139      if no pickup-file, can restart with a re-initialised pH (same as it did
140      before) providing pickupStrictlyMatch is set to False.
141    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
142      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
143    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
144      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
145    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
146     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
147       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
148    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
149       scheme to use for vorticty-term ;
150     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
151       (with default selectVortScheme, return to original discretisation)
152     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
153    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
154    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
155      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
156      also fix diagnostics VISCAHW & VISCA4W.
157    
158    checkpoint59o
159    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
160    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
161      move a few statemens out the main loop into separate loops
162    o pkg/shelfice:
163      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
164        (kg/m^2/s), does not break tests, because in verification/isomip,
165        rhoConstFresh=rhoConst (by accident)
166      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
167      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
168        new file model/src/seawater.F, so that they are available for all pkgs.
169      - convert potential temperature into in-situ temperature. This changes the
170        isomip tests => update tests
171    o add a flag writePickupAtEnd (default=true) to be able to suppress
172      writing a pickup at the last timestep
173    o tools/mpack-1.6 :
174      - disable automake (not working) and autoconf (not needed).
175      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
176        also cleaner with much less compilation warnings.
177    o pkg/profiles:
178      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
179      (for "less than 32 characters name" compiler requirement)
180    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
181      conditions that have a different sampling frequency than S/T/U/V obcs
182    o pkg/diagnostics (stats-diags):
183      - fix global Min/Max in case 1 processor get only empty tiles
184    o genmake2: replace (4 times)
185         make genmake_tc_1.o >> genmake_warnings 2>&1
186      with
187         COMM="$CC $CFLAGS -c genmake_tc_1.c"
188         echo $COMM >> genmake_warnings
189         $COMM >> genmake_warnings 2>&1
190      to make genmake2 always see the value of CC as specified in the optfile.
191    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
192      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
193      - modify verification advect_cs test to test SOM-advection on CS-grid.
194    o pkg/ctrl:
195      - Rewrite of ctrl_map_ini_ecco.F,
196        introducing a generic routine (ctrl_map_ini_gen.F).
197      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
198    
199    checkpoint59n
200    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
201      number in dedicate array "hdiag":
202      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
203        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
204      - many small changes (integer format) for large number of diagnostics
205      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
206        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
207    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
208      usingSphericalGrid, this allows to define the rotated grid coordinates
209      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
210      geographical coordinates according to the inverse of the rotation defined
211      by the Euler angles, so that Coriolis parameter and online-interpolation by
212      exf works with the geographical coordinates on XC/YC/XG/YG.
213      Naturally, this feature does not work with all packages, so some
214      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
215      profiles), because there the coordinates are assumed to be regular
216      spherical grid coordinates.
217    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
218      - introduce isopycnal diffusion coefficient control.
219    o tools/adjoint_options:
220      - additional control vector components.
221    o pkg/mnc: have mnc create marginally meaning full coordinate variables
222      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
223    o pkg/mypackage:
224      - add example of read/write pickup for state-var ;
225      - add entry points to the main code for state-vars diags & write-pickup.
226    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
227      transitions for useExfYearlyFields
228      - add new subroutine that determines the file to read from for
229        use*YearlyFields = .TRUE. and .FALSE.
230      - add a verification experiment to global_with_exf that tests
231        useExfYearlyFields with USE_EXF_INTERPOLATION defined
232    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
233      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
234      subroutines (which could be generated from a template, because they are
235      almost identical), for now they are included in obcs_prescribe_read.F for
236      simplicity
237    o pkg/exf:
238      - add a little more diagnostic to exf_interp_read (in analogy to
239        mds_read_field, can be turned off with debugLevel < debugLevA=1)
240      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
241        ugly but fast by unrolling short inner loops, inserting a unroll=8
242        directive in routine lagran, and splitting a loop and making do while the
243        outermost loop (the latter requires the intoduction of index arrays)
244    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
245    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
246      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
247    o verification/seaice_obcs: updated for restart test and latest options
248    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
249      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
250      for now this is only available for the C-grid code and also within
251      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
252    
253    checkpoint59m
254    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
255      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
256    o gad_som : fix flux output (& diagnostics) to have same units as other  
257      advection scheme fluxes (was previously multiplied by deltaT).  
258    o added verification/seaice_obcs both to test seaice open boundaries
259      and to provide an example matlab scrpt for generating them
260    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
261    o pkg/salt_plume: clean up salt_plume_frac.F to
262      remove redundancy in PlumeMethod 1 and 4
263    o pkg/kpp: added saltplume diagnostics
264    o pkg/obcs and pkg/seaice:
265      - do not set uice and vice to zero when OB*icefile are unspecified
266      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
267      - moved seaice tracer obcs after call to seaice_growth
268    o pkg/salt_plume: added various options for salt plume depth
269      criterion and for vertical distribution of the salt
270    
271    checkpoint59l
272    o pkg/ptracers: new version of ptracers pickup:
273      read meta file and write only fields which are needed to restart.
274      ( same logic as main pickup file ; also using pickupStrictlyMatch )
275    o pkg/seaice:
276      - add timescale for melting due to warm mixed layer as a means of
277        setting SEAICE_availHeatFrac more conveniently
278      - add a CPP-flag/runtime parameter check for flooding algorithm
279      - reformulated availHeat in seaice_growth.F to be independent of AREA
280    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
281      unit changes
282    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
283    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
284      SX vector computer.
285    o pkg/seaice:
286      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
287        seaice forcing fields can now be read only through pkg/exf
288      - removed some unused halos
289    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
290    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
291      or U/VICE from U/VWIND before computing U/VSTRESS
292    
293    checkpoint59k
294    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
295      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
296    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
297      all experiments pass when compile with un-initialised var. checking option.
298    o added pkg/salt_plume
299    o script to test restart (for now, in MITgcm_contrib/jmc_script)
300    o pkg/seaice: new read/write pickup version.
301      read meta file and write only fields which are needed to restart.
302      ( same logic as main pickup file ; also using pickupStrictlyMatch )
303    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
304    o lab_sea.hb87: modify the domain & update output.hb87.txt :
305      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
306      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
307      process. Fixed here by closing the domain at the Northern boundary.
308    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
309    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
310      a set of consecutive levels in/from a 3-D array.
311    o pkg/ptracers:
312      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
313      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
314    
315    checkpoint59j
316    o in pkgs: dic, obcs, offline, rbcs:
317      standard way to compute coeff. for time interpolation between 2 time reccords
318      which retains full precision (& make results less dependent on compiler).
319      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
320    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
321      packages instead of reading ice cover and wind speed separately
322    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
323     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
324      to allow to compile customized code before the update)
325    o cleaning-up:
326      - fix CPP instruction syntax in pkg/obcs
327      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
328        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
329      - fix some threads issue in IO parts.
330    o pkg/dic:
331      - add tons of "_d 0" (--> much better testreports !)
332       and then update outputs of tutorial_global_oce_biogeo
333    o pkg/mom_fluxform:
334      add a special version of momentum advection intended to conserve momentum
335      next to a bathymetry step or a coastline edge. (default = off = #undef)
336    o new read/write pickup version:
337      - for now, only implemented for main (mdsio) pickup file.
338      - write out only what is needed to restart; merge pickup_nh , pickup_ph
339        and main pickup together.
340      - read meta file; read only what is needed to restart; stop if a field
341        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
342        if it make sense (even if the restart is not perfect).
343      - if no meta file, assume that pickup to read corresponds exactly to
344        a pickup that would currently be written.
345      - read pickup written in the old format (until checkpoint59i) if it
346        recognizes an old meta file (no field-list).
347      - add a meta file in exp. which starts from a pickup: 2 cases:
348        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
349         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
350        b) a meta file describing the content of the associated pickup file
351         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
352    o pkg/mdsio & pkg/rw:
353      - new routine to read a meta file ; new set of routine to read
354        Multiple-fields file (with meta file).
355    o added open boundary conditions capability for seaice
356        HSNOW, HSALT, UICE, and VICE
357    
358    checkpoint59i
359    o adjoint:
360      * fix multiDimAdvection adjoint
361        (partial recomputation problem by TAF for fVerT(:,:,kDown)
362        and comlev1 size definition (maxpass vs. max. number of tracers)
363      * verification/global_ocean.90x45x15 adjoint now tests
364        NLFS and multiDimAdvection using DST3 (=30)
365      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
366    o pkg/kpp: add "_d 0" to real constant (if missing);
367      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
368      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
369    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
370      for internal parameters related to restart process (formerly from PARAMS.h)
371      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
372    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
373      as argument. (only atm2d & obcs write_pickup have not yet been updated)
374    o pkg/monitor:
375      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
376      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
377      - account for deep Atmosphere factor and density factor (anelastic)
378    o added open boundary conditions capability for seaice HEFF and AREA
379    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
380      thermodynamics
381      - requires a little reorganization, which affects the testreport results
382        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
383        so that now the conservative form is tested
384      - add a few comments
385    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
386    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
387    o add new diagnostics to seaice: advective, diffusive fluxes (only for
388      multidim-advection, for scheme 2 they are not filled) and transports,
389      thermodynamic growth rates
390    o change units of EmPmR (inside the code, + within coupling interface)
391      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
392      Affects results @ truncation level (cg2d match) and update output of
393       experiments: lab_sea(6), global_ocean.90x40x15(10),
394      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
395      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
396      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
397      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
398    
399    checkpoint59h
400    o pkg/exf:
401      - improve vectorization by moving if-statement out of loops in
402        exf_mapfields, exf_radiation
403      - exf_bulkformulae.F: introduce 2D fields and vectorize code
404    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
405    o testreport:
406      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
407        monitor & update offline_exf_seaice exp. output.
408      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
409    o pkg/seaice:
410      - bug fix in the evp solver: boundary conditions were affected be
411        masking of zMax/zMin (changes results)
412      - minor bug fix in boundary conditions in seaice_calc_strainrates
413        (changes results for no_slip)
414      - seaice_lsr.F: make interpolation of eta dependent on boundaries
415      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
416      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
417        stress formulation and no-slip boundary conditions
418    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
419      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
420    o pkg/seaice: a first HSALT time stepping equation has been checked in
421    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
422      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
423      without requiring DO-IF statements
424    o pkg/thsice:
425      use continuous power-law function for partition of energy between lateral
426      melting/freezing and thinning/thickening ; old code using step function
427      still available with #undef THSICE_FRACEN_POWERLAW
428      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
429    o testreport: change AD testing : check against results/output_adm.txt
430      using same scripts as for forward test.
431    
432    checkpoint59g
433    o adjoint testing: in preparation for changing testreport:
434      - output format: cost and grad written on separated lines
435      - ad output results in directory "results" (instead of "results_ad")
436    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
437    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
438    o pkg/ecco: allow user defined cost function contributions
439    o testreport:
440      Allow to choose (per experiment) the list of tested output variables
441       and the main variable (used to issue a pass/FAIL ) ;
442      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
443      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
444      Also modify printing of summary:
445       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
446       b) echo the list of tested variables in the individual summary.txt of
447          each experiment.
448    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
449      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
450      (but still depend on the tile decompostion of the domain).
451    o pkg/seaice: change a discretization detail to make the B-grid code
452      "more symmetric". This change is likely to remove all "ridges/leads" that
453      where quasi-aligned with the grid in B-grid solutions. It may also be
454      the solution to the stress coupling issues with the B-grid.
455    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
456      remove .cvsignore from input dir. (since testreport no longer run here).
457    o pkg/thsice:
458     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
459     - fix reshaping of sea-ice just after advection:
460       melt all the ice only if ice-volume is too small.
461     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
462       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
463     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
464    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
465      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
466    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
467      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
468      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
469      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
470      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
471      -> update output.txt
472    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
473     this affects truncation error: -> update output.txt of exp:
474      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
475      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
476    
477    checkpoint59f
478    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
479    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
480      a bounded range (in forward mode)
481    o pkg/ecco, ctrl, autodiff and mom_common:
482     internal parameter controls, completements of implementations
483    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
484    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
485      (not seem any difference in testing results).
486    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
487       at face corners.
488    o pkg/generic_advdiff:
489     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
490      loop range indices for computing vertical advection tendency
491      and do the calculation in the interior only (no overlap) ;
492      for now, only implemented for SOM advection (to save CPU time).
493     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
494    o exch2 adjoint
495      First set of changes:
496      - add exch2 hand-written adjoint templates
497      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
498        This will require cleanup in pkg/autodiff/*.F
499        (changed routines currently kept separate in verif. code/)
500      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
501        that used to hide exch2 or cubed-sphere specific code
502        (commented via 'cph-exch2')
503    o pkg/seaice
504      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
505    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
506       output of global_ocean.cs32x15.thsice .
507    
508    checkpoint59e
509    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
510      for B-grid vector (not yet tested) and C-grid vector (<- only used
511      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
512    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
513      (#ifdef ALLOW_SALT_PLUME)
514    o gather_2d/scatter_2d: removed halo regions
515    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
516      scheme and the corresponding test case (under front_relax dir). For now,
517      only available with Skew-flux form and not yet tested in realistic set-up.
518      adjoint: store directives updated, but gradient checks deteriorated,
519      so maybe GM/Redi adjoint is now broken.
520    o seaice adjoint
521      * add AREA, HEFF, HSNOW as control variable
522        (should not change lab_sea results)
523      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
524    o pkg/seaice:
525      * added computation of saltFlux in seaice_growth;
526        For time being, sea ice salinity is assumed constant
527        contribution of snow flooding to freshening of sea ice is neglected.
528        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
529        defaults to 0.0 in order to maintain backward compatibility.
530        Typical values for SEAICE_salinity are 4 to 10 g/kg.
531      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
532      * added SEAICE_availHeatFrac, which specifies fraction of surface level
533        heat content used to melt or grow ice
534      * commented out cap of HICE: it helps keep ice thinner
535      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
536      * applied OBCS T/S mask to HEFFM sea ice mask
537    
538    checkpoint59d
539    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
540     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
541     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
542    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
543     and change default value of parameter "GM_Small_Number";
544     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
545       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
546       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
547    o pkg/ecco: cost function when applying pkg/smooth to controls
548    o pkg/ctrl: add forcingPrecond run time parameter
549    o pkg/seaice:
550     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
551     - fix bug in metric terms of u-equation in LSR solver (implicit part),
552       changes verification/lab_sea
553     - rearrange implicit part of u-equation in LSR solver to make it easier to
554       read, understand, and debug. This causes changes at the truncation level.
555     - fix (serious) bug in the boundary conditions (sign error in the implicit
556       part) of the LSR solver. Changes all LSR results.
557     - fixed problem with HSNOW initialization to avoid thick snow when AREA
558       is initilized with small values - does not change lab_sea results.
559     - added HsnowFile initialization capability
560    o pkg/smooth: addition to model/src and pkg/ctrl so allow
561     initialization of pkg/smooth and application to control vector
562    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
563    o dependencies: pkg/profiles requires pkg/cal
564    o pkg/profiles:
565     - added option ALLOW_PROFILES_GENERICGRID
566         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
567         that interpolation information (grid points and coefficients) is provided
568         within the netcdf input files.
569         -> sample matlab scripts can be found in MITgcm_contrib/gael
570         that allow you to prepare netcdf input files.
571     - also modified: cleaner include statements, cleaner error print statements,
572       cleaner stops when error, and more tests of the netcdf input files consistency.
573    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
574    o pkg/seaice:
575     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
576       requires a new routine: seaice_diagnostics_fill.F
577     - make sure that seaice does not move if not forced (pressure replacement
578       method, Hibler and Ip, 1995), changes results
579     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
580     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
581       It is turned off by default (=-1.), because it changes the results.
582     - make it possible to read AREA from a file, too.
583    
584    checkpoint59c
585    o add S/R and diagnostics for oceanic mixed-layer depth
586    o move GMRedi call after all vertical mixing schemes (including KPP)
587    o pkg/thsice:
588     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
589      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
590    o pkg/obcs:
591     - bug fix for balance code
592    o pkg/seaice:
593      - allow values of SEAICE_elasticParm > 1
594      - add new parameter SEAICE_evpTauRelax as an alternative
595        to SEAICE_elasticParm
596      - make lsr boundary conditions free slip (by default), changes result
597      - add code for no slip boundary conditions for lsr
598      - set minimum of zeta to zero (and not 4e8) (changes results)
599      - add a cap on AREA after advecting AREA if seaice_growth is not called
600    o change calculation of Visbeck K:
601      - no longer depend on tapering scheme; instead, compute slope (limited
602        by GM_maxSlope). this is equivalent to what was comuted before with
603        clipping or linear tappering.
604      - fix vertical averaging (wrong by 1/2 level)
605      - leave the old version (but will not be maintained) within
606        #ifdef OLD_VISBECK_CALC / #endif
607      - update output of exp. ideal_2D_oce
608    o change error catch in calc_r_star to improve vectorization
609    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
610      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
611    o adjoint:
612      Re-organized adjoint checkpointing according to Matt Mazloff
613      (but with modifs/completions/cleanups)
614      Storing is now bundled into large arrays to optimized I/O
615      (and second step in cleanup of the_main_loop)
616    
617    checkpoint59b
618    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
619      - export/import (between ocean & coupler) fields needed for ocean DIC.
620    o pkg/seaice:
621      - get rid of three more exchanges seaice_calc_viscosities (required
622        different loop boundaries in seaice_lsr and seaice_ocean_stress)
623      - bug fix in seaice_ocean_stress (update of lab_sea required)
624      - reduce loop boundaries to necessary minimum also in seaice_evp
625      - go back to the old way of computing deltaC/Z as the adjoint likes that
626        better
627    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
628      passive tracer to an Age Tracer) + update output.txt
629    o pkg/exf:
630      - implement A-grid / C-grid selection for wind-stress input files.
631      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
632      for now, in exf_bulk_largeyeager04.F only :
633      - change implementation for case where windspeed + 2. components wind-stress
634        are read-in. AND use rhoConstFresh to convert evap.
635    o pkg/seaice:
636      - use correct EXCH_UV for wind-forcing (on A-grid).
637      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
638        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
639    o pkg/exf:
640      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
641      EXF_INTERPOLATION:
642      - merge global_with_exf/code version of exf_interp_read.F
643        to the main code ;
644      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
645        reading the file ; Important: This options needs to be defined to recover
646        previous code.
647        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
648      - no longer loose real*8 precision along the way when using exf_iprec=64.
649    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
650      - change discretisation of evp-solver in order to avoid another exchange
651        (changes lab_sea) and clean up a little
652      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
653        help the adjoint (this also changes the results slightly)
654      - add a few "_d 0" where they had been missing in seaice_evp.F
655      - cleaning up: remove unused seaice_calc_rhs.F
656    o pkg/exf: some cleaning-up:
657      - change various "constants" into runtime parameters
658      - cleaned-up Large&Yeager04 routine which should eventually
659        replace exf_bulkformulae.F (changed names of S/R and CPP)
660        and merged various ALLOW_ATM_WIND options
661     only used with thsice pkg (in thsice_get_exf.F):
662      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
663        which are used when useStabilityFct_overIce=TRUE (= the default)
664      - change default values of ice & snow emissivity and scale downward LW
665        by ice & snow emissivity.
666    o pkg/thsice:
667     fix few little problems, in thsice_calc_thickn.F:
668      - growth vertically (and not laterally) if iceFrac == iceMaskMax
669      - melt only laterally if hIce < hThinIce (as the comments say)
670      and in thsice_extend.F:
671      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
672      - start to form ice as soon as the minimum ice-volume is reachable.
673     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
674      and cpl_aim+ocn
675    o pkg/kpp
676     - move computation of surface related input fields to KPP into a new
677       subroutine kpp_forcing_surf.F
678     - remove wrong (within bi,bj loops) EXCH calls.
679     - little cleaning (add argument myThid in last position, cvs header ...)
680     - for now, fix conservation problem by exchanging KPPviscAz (may not
681       be the best fix)
682    o pkg/seaice
683     - check for inconsistent evp parameter/cpp-flag combination
684     - remove leftover errIO flat for obsolete name list error handling
685    o OpenAD
686     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
687    
688    checkpoint59a
689    o pkg/seaice: some parameter clarifications and a little bit of clean up
690    o pkg/thsice: rename run-time parameters:
691       himin       -> hIceMin
692       himin0      -> hThinIce
693       hihig       -> hThickIce
694       i0          -> i0swFrac
695       transCoef   -> bMeltCoef
696       frac_energy -> fracMelting
697      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
698       with default values (for now) that do not change the results.
699      remove old version of thsice vars advection in pkg/seaice.
700    o in FFIELDS.h:
701      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
702      - make pLoad & sIceLoad always available (but still only used if
703         ATMOSPHERIC_LOADING is #define).
704    o pkg/kpp: replaced _KPP_RL with _RL
705    o bug fixes for vertical diffusivity computations when both KPP and
706        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
707        are no longer updating the vertical diffusivity array
708        (passed as argument) but are (re-) setting those arrays.
709    o pkg/seaice: fix bug in evp solver, while doing that
710      - change (improve?) discretization of stress computations for both
711        cgrid-lsr and evp solver
712      - add a new routine to compute strain rates
713      - the above changes lab_sea results
714      - add no slip conditions for evp solver (off by default), lsr-version
715        may follow
716      - fix exchange for shear at Z-points (does not change lab_sea)
717      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
718        (to force the user to pick a time step since there is not "safe" way
719        of choosing it)
720      - add principal stress diagnostics
721      - rearrange fields for evp a little to avoid having to call a: too many
722        exchanges and b: exchanges for stress trensor components which we do
723        not have.
724      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
725        of evp, complete rewrite for lsr case (latter is does not yet work
726        in all cases)
727    o pkg/kpp: add code to have mixing in shelf ice caverns
728      - add myThid to all kpp routines (long overdue)
729    
730    checkpoint59
731    o pkg/exf:
732      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
733        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
734      - move exf header files from lower_case.h to UPPER_CASE.h ;
735        add missing cvs Header & Name
736      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
737      - add namelist param. selectStressGridPosition, exf_monFreq
738      - retire many _CLIM routines, and remove data.exf_clim
739        + params moved to data.exf
740        + climsst, climsss now handled by exf_set_gen, i.e.
741          climss?period=0 refers to constant field,
742          climss?period=-12 to monthly forcing
743      - split up namelists in data.exf
744    o pkg/seaice:
745      - remove seaice_exch and seaice_exch_uv
746      - remove superfluous exchange of theta
747      - add myThid to seaice_budget_ocean/ice
748      - add new interface for atmospheric wind forcing (C-grid only)
749        + new routine
750        + two new field (taux, tauy for stress over ice)
751        + removed one global field (DAIRN) for C-grid case only
752    o pkg/thsise
753      - 2nd set of modifs for thsice adjoint in conjunction with exf
754    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
755    
756    checkpoint58y_post
757    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
758      vertical diffusivity, similar to that in MOM4; turned on using
759      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
760      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
761    o Added capability for 3D specification of background vertical diffusion
762      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
763      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
764      "data" file that contains the 3D vertical diffusivity coefficients.
765    o ice dynamics (pkg/seaice) with thsice thermodynamics:
766      - add code within pkg thsice to advect & diffuse sea-ice fields
767      similar to (and will replace) what has been added in  seaice_advdiff.F,
768      but: - conserving Mass, Heat & Salt.
769           - better when using non-linear advection scheme (not yet fully tested)
770           - can also be used in atmospheric set-up (for now, only the diffusion).
771    
772    checkpoint58x_post
773    o IO option for global-file compact format:
774      - add options when generating topology (utils/exch2/matlab-topology-generator)
775      - add I/O capability (pkg/mdsio).
776      - adapt utils/matlab/rdmds.m to read this format.
777      for now long-line format not yet supported by pkg/mdsio (& exch2).
778    o shelfice: add a few diagnostics
779    
780    checkpoint58w_post
781    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
782      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
783      (and replace horiVertRatio in NH code).
784      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
785                         and tutorial_plume_on_slope (sensitive to truncation)
786    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
787      directly to drive seaice model (C-grid only)
788    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
789     - reintroduce computation of wind from stress,
790     - compute tau (in exf_bulkformulae.F) from windstress averaged to
791       mass points to avoid tau = 0
792     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
793    o rdmnc.m: make it work with "global" files created with gluemnc
794    o rdmnc.m : some improvements in dealing with singleton dimension
795      (tested on all testreport mnc output files).
796    o genmake2: disable pkg/profiles if netcdf test fails.
797    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
798    o move call to cal_readparms up to make calendar parameters/variable available
799      to all packages
800    
801    checkpoint58v_post
802    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
803      useDynP_inEos_Zc tested.
804    o pkg/exf: changes to properly interpolate/mask/scale initial fields
805    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
806      and portions thereof.  See read_cs.txt for description and examples.
807    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
808      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
809      following the great-circle arc between those 2 points.
810    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
811      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
812    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
813     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
814     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
815     - still needs work (not working with some options ; efficiency to improve)
816       and serious testing.
817     - use this scheme for temperature & salinity in 2 advection test exp.:
818       advect_xy & advect_xz, respectively.
819    
820    checkpoint58u_post
821    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
822    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
823    o testreport: add option "-skipdir" to skip some test.
824    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
825      momentum calculation.
826    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
827    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
828      remove checkpoint.F and the_correction_step.F (no longer used);
829      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
830    o add option (linFSConserveTr) to correct for tracer source/sink due to
831      Linear Free surface
832    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
833    o pkg/thsice: fix reading mnc-pickups
834    
835    checkpoint58t_post
836    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
837    o pkg/mdsio:
838     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
839       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
840       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
841     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
842     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
843       either MDS_READ_FIELD or MDS_WRITE_FIELD )
844     - new S/R (to replace MDSWRITEMETA), which allows to write more
845       informations (variable names, time ...) to meta files.
846     - modify rdmds.m to give back the meta file content.
847    o pkg/diagnostics: change vertical interpolation to be safer, and more
848       flexible (define p-levels to interpolate to in data.diagnostics);
849      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
850       diagnostic pointer.
851    o pkg/seaice: more cleaning up of seaice_growth, added many comments
852    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
853    o fix multi-category seaice:
854     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
855       SEAICE_MULTICATEGORY
856     - fix short wave heat flux
857    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
858       and allow to use EVP solver. Change forward lab_sea: test both EVP
859       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
860    o Initial check-in of lab_sea adjoint
861      (very similar to natl_box_adjoint/code_seaice)
862      * used C-grid and EVP solver
863      * used KPP, GM/Redi
864      * uses inAdExact=.TRUE.
865      * gradient checks fail for both ADM and TLM
866        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
867        f.d. gradients actually seem more problematic than ADM, TLM gradients;
868        issue is related to forward mismatch between g77 an ifort
869    o pkg/seaice: overhaul of thermodynamics
870     - growth.F and groatb.F are replaced by new routine seaice_growth.F
871     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
872     - move a few global fields out of SEAICE.h into seaice_growth.F and
873       make them 2D (FICE/QNETO/ ...)
874     - remove FO (it is the same as QNETO)
875     - introduce a few local fields to avoid modifying external fields such
876       as atemp, etc.
877    
878    checkpoint58s_post
879    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
880      changed exf_set_gen.F so that
881        genperiod=0 means input file is one time-constant field and
882        genperiod=-12 means input file contains 12 monthly means
883    o CG2D: use pre-computed solver main-diagonal (stored in common block);
884      this affects truncation error ; generate new output file for exp. which
885      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
886        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
887        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
888        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
889        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
890        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
891    o start implementation of deep-atmosphere and anelastic formulation
892    o verification: remove 2nd copy of input files and use script "prepare_run"
893      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
894    o mom_common/vecinv/fluxform: fix a few initialisation isssues
895    o profiles: fix for multithreaded case
896    
897    o diagnostics: rename few diags:
898      s/'PRESSURE'/'RCENTER '/g
899      s/'TICE    '/'oceFreez'/g
900      s/'TAUX    '/'oceTAUX '/g
901      s/'TAUY    '/'oceTAUY '/g
902      s/'SWFLUX  '/'oceQsw  '/g
903      s/DIFx/DFxE/g
904      s/DIFy/DFyE/g
905      and add few ocean-forcing diagnostics:
906      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
907    o modifications to pkg/seaice/growth.F and budget.F, which change results of
908      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
909      as actual snow thickness.  It now refers everywhere to effective snow
910      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
911    
912    checkpoint58r_post
913    o modifications to pkg/seaice/growth.F, which change results of
914      lab_sea experiment: fixes pertain to melting snow over open water, to
915      masking EVAP under sea ice, and to using the correct AREA variable for
916      computations of EVAP, PRECIP, HSNOW, and GHEFF
917    o add ability to read bathy, salt, and theta using MNC (off by def)
918    o add flooding algorithm and advection of HSNOW for pkg/seaice;
919      both are turned off by default and do no change any results
920    o seaice advection with pkg/thsice: a step toward the use of non-linear
921      advection scheme, but #ifdef or commented out for now (requires more EXCH).
922    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
923      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
924      in natl_box (affects results @ truncation level: update output.txt)
925    o multi-threading and IO:
926      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
927      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
928        (needed to work with SingleCpuIO): tested in all verif. exp.
929    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
930      affects the results (but none of the verification test uses this scheme).
931    o Adding some pkg/diagnostics capability to pkg/seaice
932      (will certainly be subject to changes)
933    o ctrl: adding new control variables:
934      lwflux, lwdown, evap, snowprecip, apressure, runoff
935    
936    checkpoint58q_post
937    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
938      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
939      high_res_cube configuration by 4% on Columbia.
940    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
941      add (in global_with_exf/code) a version of EXF_INTERP_READ without
942      dynamical allocation (seems to work in multi-threaded).
943    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
944      single CPU io) so that TAF does not have to see EESUPPORT.h
945    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
946    
947    checkpoint58p_post
948    o obcs: stop if obcs is used with useCDscheme = .true.
949    o shelfice:
950     - fix a sign error so that no slip at shelfice interface works
951     - remove stop for combination non-hydrostatic code and shelfice. That does
952       not mean, that the results are correct, but at least they are numerically
953       stable
954    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
955    o added adjoint exch routined for all exch*3d* routines
956      and updated flow directives
957    
958    checkpoint58o_post
959    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
960      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
961    o change controling S/R for writing pickup file (new S/R do_write_pickup)
962      and clean-up reading/writing of pickup files.
963    o fix local version of read/write pickup (NH part) in rotating_tank/code
964    o simplify EXCH interface:
965     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
966     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
967    o added the regrid package
968    o shelfice:
969     - add a simple boundary layer scheme to reduce noise
970     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
971    
972    checkpoint58n_post
973    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
974       local variable (not in common block).
975    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
976      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
977      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
978        to work with SingleCpuIO.
979    o add "_d 0" to real constant of pkg/cfc subroutines ;
980       update exp. cfc_exemple & tutorial_cfc_offline output files.
981    o multi-threading and IO:
982      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
983        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
984      - barrier before and after reading.
985      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
986      - avoid using MDS_WRITELOCAL for LAND pkg output.
987      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
988        common-block variables ; Allows multi-threading with master-thread IO.
989    o change default MAX_NO_THREADS from 32 to 4 ;
990      and stop cleanly when MAX_NO_THREADS is too small.
991    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
992    
993    checkpoint58m_post
994    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
995       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
996    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
997       keep global_ocean.90x40x15 (for AD testing) with former secondary test
998       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
999    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1000        add MITgcm_tutorials (= code + all the tutorials)
1001    o ecco, option to compute cost for total ssh (mean+anom)
1002    o consistent with addition of ptracer and ssh in pkg/profiles
1003    o profiles: adding ptracer and ssh
1004    o testreport: change multi-test output-file name
1005      (from output.txt.{name} to output.{name}.txt)
1006    o profiles: now ok for mutli-tiles case
1007    o seaice: add 4 parameters for different advection schemes for area,
1008      (effective) seaice thickness, enthalphy, and snow height. Their default
1009      is the standard parameter SEAICEadvScheme
1010    o calc_gw:
1011     - add cosFacU in zonal viscous flux (harmonic.visc.).
1012     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1013       of tutorial_plume_on_slope.
1014    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1015    o calc_gw: true flux-form, account for horizontal grid spacing.
1016      update rotating_tank results, but not plume_on_slope (affected at
1017      truncation level, 11 digits).
1018    
1019    checkpoint58l_post
1020    o calc_gw:
1021     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1022     - remove side-drag for now (need to fix it); update plume_on_slope results.
1023     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1024    o commit code to make SST/SSS weights spatially variable
1025      (based on either variable in-situ or variable initial T/S weights)
1026    o pkg/ecco:
1027      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1028        now based on horizontally varying weights wthetaLev, wsaltLev
1029      * cost_averagesflags now returns year indices in addition to day, month
1030      * sflux balance is performed on annual basis
1031        (sflxumm, sfluxmm2, bal_sfluxmm)
1032      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1033        including separate counting and multipliers
1034    o pkg/rbcs
1035      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1036    
1037    checkpoint58k_post
1038    o testreport:
1039     - always build in dir. "build" (if not there, mkdir build instead of building
1040       & running in input)
1041     - run in dir run (if it exists), in build otherwise.
1042     - call prepare_run (if input/prepare_run exists)
1043     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1044    o pkg/exf modifications to interpolation and rotation routines for more
1045       reasonable treatment of North Pole singularity: for tracers North Pole
1046       value is set to northernmost zonal-mean value, for zonal velocity it is
1047       set to zero, and for meridional velocity it is set to northernmost value.
1048    o pkg/exf/exf_check_range.F
1049     - add tile index to diagnostics and move stop statement to the very
1050       end of the routine.
1051    o pkg/diagnostics: (diagnostics_main_init.F)
1052      define title of isomorphic variables according to the current config.
1053    o pkg/thsice with pkg/seaice dynamics:
1054    - fix domain of computation (interior only, required for exf) and do exchanges
1055    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1056    o towards a standard way of dealing with multi-threading in MONITOR
1057      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1058    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1059       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1060    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1061    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1062    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1063       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1064    o tracer advection:
1065     - clean-up and simplify calc_common_factors.F
1066     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1067       advection subroutine (but still not used within DST advection S/R)
1068    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1069    
1070    checkpoint58j_post
1071    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1072      from file (collects calls previously in FORWARD_STEP)
1073    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1074    o adjoint store dir. adjusted accordingly
1075    o genmake2
1076      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1077    
1078    checkpoint58i_post
1079    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1080      on wind stress (SEAICEstressFactor defaults to 1.)
1081    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1082      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1083    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1084      on CS-grid: no longer loosing mass.
1085    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1086    o pkg/ggl90: fix sloppy output and fix a bug
1087    o pkg/seaice: added SEAICEuseEVPpickup parameter
1088      - Set to false in order to start EVP solver with
1089        non-EVP pickup files when using SEAICEuseEVP
1090      - fix sign error in diffusion in seaice_calc_rhs
1091    
1092    checkpoint58h_post
1093    * Modifications for bottom topography control
1094      o replace hFacC by _hFacC at various places
1095      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1096      o add non-self-adjoint cg2d_nsa
1097      o update autodiff support routines
1098      o re-initialise hfac after ctrl_depth_ini
1099      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1100    * Adding verification for 5x5 box (4-layer) bottom topography control
1101    
1102    checkpoint58g_post
1103    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1104       used for mean seasonal cycle, mean diurnal cycle); add an example
1105       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1106    o pkg/ggl90:
1107      - add parameter (minimum surface kinetic energy)
1108      - fix bug (avoiding division by zero)
1109    o couple pkg/thsice to pkg/seaice:
1110      - modify advection in seaice to accomodate new scalar fields to be advected
1111      - only muliDimAdection scheme work with seaice/thsice
1112      - mapping of thsice-variables to seaice-variables, back and forth
1113      - does not break the verification experiments, but does not give the
1114        desired results either
1115    o pkg/seaice
1116      - make (default) second order advection a bit less confusing?
1117    
1118    checkpoint58f_post
1119    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1120      to pkg/seaice):
1121      - new routines thsice_map_exf and thsice_get_exf provide the interface
1122      - add an additional formal parameter to thsice_solve4temp
1123    o pkg/exf:
1124      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1125      - correct Stefan-Boltzmann constant
1126      - new parameter for longwave surface emittance
1127      - separate some stuff from exf_bulkformulae into new routines  
1128        exf_radiation, exf_wind
1129      - add new parameters and constants: longwave emissivity for ocean, ice
1130        and snow, evaporation parameters over ice
1131      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1132        either wind from stress or stress from wind
1133    o pkg/thSIce:
1134    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1135    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1136       and THSICE_CALC_THICKN
1137    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1138    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1139      to make debugging easier.
1140    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1141    o pkg/bulk_force:
1142      - clean-up comments and parameters ;
1143      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1144    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1145      generate new output for test-experiment: aim.5l_cs.thSI
1146    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1147      testreport accordingly
1148    
1149    checkpoint58e_post
1150    o SEAICE_CGRID adjoint done
1151    o R_STAR adjoint implemented.
1152      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1153      * need to sort out init. of h0facc, etc.
1154    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1155      to be able to use it in pure forward.
1156    
1157    checkpoint58d_post
1158    o upgrade simple test-experiment to tutorial example:
1159     step.1: duplicate the experiment and (step.2) will remove the old copy.
1160      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1161      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1162      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1163      tutorial_global_oce_biogeo    <- copy of dic_example
1164      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1165      tutorial_plume_on_slope       <- copy of plume_on_slope
1166      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1167      tutorial_global_oce_optim     <- empty for now (David ?)
1168      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1169     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1170    o correct a sign problem in cost_scat.F
1171    o obcs and ptracers: fix boundary conditions for advections schemes
1172      with larger stencil
1173    o thsice adjoint: start
1174    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1175      completeness
1176    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1177      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1178    o ptracers adjoint:
1179      * avoid extensive recomputatations
1180      * fix missing re-init. of gptr (missed by TAF)
1181    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1182      me to turn off the excessive output to STDOUT that this package produces
1183    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1184      and add those terms in Vector-Invariant formulation.
1185    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1186      if the control period (xx_hfluxperiod etc) is 0
1187    o in profiles pkg, clean routines and fix details
1188    o in ecco pkg, reading ssh data:
1189      fix problem in case the model does not start at iter0=0
1190    o fix mnc-pickup/restart for ptracers
1191    o new package prifiles:
1192      code to compute profile-based cost by Gael Forget
1193      (modifs in ecco, ctrl, autodiff)
1194    o Benign bug fix in initialization (spotted by M. Mazloff) of
1195      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1196    
1197  checkpoint58c_post  checkpoint58c_post
1198  o adjoint: finish NLFS adjoint and provide reference output in  o adjoint: finish NLFS adjoint and provide reference output in
1199    verification/global_ocean.90x40x15/results_ad_nlfs    verification/global_ocean.90x40x15/results_ad_nlfs

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