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revision 1.390 by jmc, Sun Nov 21 22:22:31 2004 UTC revision 1.1012 by jmc, Sat Aug 2 23:12:23 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:
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
1198    o adjoint: finish NLFS adjoint and provide reference output in
1199      verification/global_ocean.90x40x15/results_ad_nlfs
1200    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1201      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1202      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1203      with SEAICE_CGRID defined.
1204    o move calendarDumps from "data" to "data.cal" and clean-up the code
1205      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1206    o add useEXF & useCAL flags (for now, set in hard-coded way)
1207    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1208      (were missing in NH mode, and wrong in quasihydrostatic mode).
1209      waiting for Chris updated version of calc_gw to add those CALLs.
1210    o fix bug in quasihydrostatic S/R ;
1211      add a test for this option: global_ocean.90x40x15.qshyd
1212    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1213      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1214    o add on/off flag useOffLine for package OFFLINE
1215    o seaice:
1216      - modify advection so that it works also on the C-grid
1217      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1218        problem in multi-tile runs with C-grid
1219      - add flags for clipping ice velocities and/or masking solver forcing
1220      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1221        C-grid solver
1222      - added a few comments to seaice_diffusion.F
1223      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1224        are now exclusive)
1225      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1226        required re-ordering the code a little:
1227       + make DAIRN global variable (defined in SEAICE)
1228       + move computation of the viscosities eta and zeta into a new separate
1229         routine (because I need to recompute them in seaice_ocean_stress.F)
1230    
1231    checkpoint58b_post
1232    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1233      update output.txt of exp. aim.5l_cs.thSI
1234    o various mnc cleanups and improvements:
1235      + shrink lookup tables by factor of ~4
1236      + better error reporting when running out of lookup space
1237      + able to handle longer path/file names (up to 500 chars)
1238    o adjoint:
1239      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1240      - TBD: "hidden" mom_vecinv recomp. in dynamics
1241    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1242     (allow to differentiate between forcing components using new integer flags:
1243      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1244     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1245    o ecco
1246      - enable trend removal from SSH anomaly obs.
1247    o adjoint
1248      - a fix for PmEpR when #undef EXACT_CONSERV
1249      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1250      - try to fix "hidden" recomp. in forward_step for NLFS
1251        (NLFS seems broken sometimes after I checked it in)
1252    o seaice:
1253     - add c-grid version of the dynamic solver:
1254       + three new routines that are the c-grid substitute lsr, dynsolver
1255         and ostres
1256       + put a few fields that were local to dynsolver into global common
1257         blocks, so that I can move the computation of stresses etc into
1258         seaice_lsr (saves coding but may break the adjoint).
1259     - replace more hardwired parameters by runtime parameters
1260     - add ice masks that mask the rhs of the implicit solvers where there
1261       is no ice (commented out in seaice_dynsolver, because i am not sure
1262       if this works properly), eventually this should replace the clipping
1263       of ice velocities in seaice_dynsolver to +/-40cm/s.
1264    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1265      include it only where its needed
1266    o move balancing of fluxes before the call of external_forcing_surf
1267    o seaice:
1268      - correct units of turning angles (now they are really in degrees)
1269      - move computation of GWATX/Y out of main routine into dynsolver
1270      - initialize GWATX/Y in seaice_init
1271    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1272      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1273    o seaice: add runtime flags for turning angles (default to zero)
1274    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1275      and trend from exf forcing and ctrl control adjustments
1276    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1277      (since checkpoint57x_post)
1278    o change the default rotation period to 86164.s = the Earth rotation
1279    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1280      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1281    o seaice advection: add code for choosing between the default (2nd order
1282      central differences) and multiDim advection schemes provided by
1283      pkg/generic_advdiff
1284    o seaice:
1285      - removed all references to SEAICE_GRID.h fields from
1286        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1287        (cubed-sphere configuration will change a little)
1288      - grid computations in seaice_init are obsolete now.
1289      - cleaned up code a little so that is easier to read (hopefully).
1290      - added new (better?) discretizations of default advection and diffusion
1291        (turn on with SEAICEuseFluxForm)
1292      - replace 1 in 3d global fields by kSurface in growth.F
1293      
1294    checkpoint58a_post
1295    o seaice:
1296      - bug fix in advect.F
1297    o shelfice:
1298      - separate shelfice load anomaly from pload (breaks with time
1299        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1300        Its default is 0., but it may be computed more cleverly from (unknown)
1301        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1302        done offline. A good approximation of the pressure load anomaly is
1303        necessary to avoid large initial adjustment processes underneath
1304        deep-reaching shelfice.
1305      - small fix in ISOMIP shelfice_thermodynamics
1306      - add more sophisticated thermodynamics of Hellmer (1989), this is
1307        now the default
1308      - give a few constants more intuitive names
1309    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1310      if bulk formulae are used in long integration (especially EmPmR). Turn
1311      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1312      if balancePrintMean, the imbalance that is substracted is printed to
1313      STDOUT.
1314    o fix bug (typo) in obcs_apply_eta.F
1315    o add a new package shelfice which enables us to model the circulation
1316      underneath shelf-ice with draughts of hundreds of meters.
1317     - works
1318     - to do: + include improved thermodynamics
1319              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1320                instead of new field kTopC
1321              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1322                instead of new field R_shelfIce and new code in ini_depth.F
1323                and ini_mask_etc.F?
1324              + adjust vertical mixing schemes?
1325    o seaice pkg:
1326     - add a cpp-flag to include a simple formula for a salinity dependent
1327       freezing point of sea water at the surface
1328     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1329       meridional stresses are now different (and hopefully correct)
1330    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1331       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1332       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1333    o pkg/diagnostics: add options and parameters for regional-statistics
1334       diagnostics ; define regions by reading a region-mask from a file
1335       (might add other options later)
1336    o pkg/bulk_force:
1337     - add option and parameters to use AIM surface-flux formulae.
1338     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1339       others forcing fields (defined in PARM05, parameter file "data") are loaded
1340       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1341     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1342     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1343     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1344       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1345     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1346    
1347    checkpoint58
1348    o add "--embed-source" option to genmake2 which, when the supporting
1349      tools can be compiled (as determined by genmake2) will turn on the
1350      embed_files package which then embeds the entire MITgcm source code
1351      (*.[fFhc] + Makefile) used for the build within the executable
1352      - requested by CNH but off by default
1353      - adds a paltry <9MB to the mitgcmuv executable in most cases
1354      - only writes the output when useEMBEDSRC in eedata is true
1355    o clean up 3-dim. relaxation codes:
1356      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1357      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1358      * Thanks to Tom Haine for testing!
1359    
1360    checkpoint57z_post
1361    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1362      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1363    o fix the pickup behavior for obcs in combination with ptracers
1364    o fix a bug in ptracers_external_fields_load
1365    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1366      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1367    o transfered surface NH pressure to eta field (if exactConserv).
1368    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1369         and update lab_sea output.txt file.
1370    o completing 3-dim. relaxation code: additional term
1371         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1372      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1373      * At compile time, in "EXF_OPTIONS.h" set
1374          #define  ALLOW_CLIMTEMP_RELAXATION
1375          #define  ALLOW_CLIMSALT_RELAXATION
1376      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1377          tauThetaClimRelax3Dim = 15552000.0,
1378          tauSaltClimRelax3Dim  = 15552000.0,
1379      * 3 cases:
1380          1) Use a constant-in-time 3-dim. field
1381          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1382          3) Real-time relax. to time-evolving prescribed field
1383    o Adding Laplacian-type smoothness constraint on
1384      initial and boundary (forcing) controls (ic, bc)
1385      * enable at compile-time via
1386        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1387      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1388      * Absolute scale somewhat unclear so far
1389      * no area weighting was included since no other cost term does so far
1390    
1391    checkpoint57y_post
1392    First step for a NLFS adjoint
1393    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1394    o new init. routines for calc_r_star, calc_surf_dr
1395    o still need to deal with ini_masks_etc
1396    o testreport seemed happy
1397    checkpoint57y_pre
1398    
1399    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1400    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1401    o add new offset feature to offline pkg (plus minor cleanup)
1402    o cfc fixes for final year of integration
1403    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1404      be in GCHEM_OPTIONS).
1405    
1406    checkpoint57x_post
1407    o fix testreport Pb in multiple test experiment.
1408    o cleanup our namelist syntax in verification:
1409      - make it more F95 standards compliant (some work still needed)
1410      - allows the vast majority of our tests to work with gfortran
1411    o Non-Hydrostatic:
1412     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1413     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1414    o Allow to apply AB on T,S rather than on AB(gT,gS):
1415     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1416     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1417       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1418     - need a "clever" read_pickup to restart from the other AB formulation
1419    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1420    o remove some unused variables (reduces number of compiler warnings)
1421    o adjoint
1422      * Disable useVariableViscosity for adjoint for time being
1423        (there are a number of extensive recomputations)
1424      * Initialize certain variables needed for adjoint
1425    
1426    checkpoint57w_post
1427    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1428                 fix the singleCpuIO RS version of MDSWRITEFIELD
1429       and add a WARNING if using globalFiles=T with multi-processors.
1430    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1431      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1432    o tracer advection scheme:
1433      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1434       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1435       was not very convenient).
1436      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1437       (further tests needed for the implicit DST & Flux-Limiter schemes).
1438    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1439      and sRef for convenience, handy, when you want to initialize
1440      ptracers in a large domain with a constant non-zero value. Also,
1441      untangle ptracers_init.F a little.
1442    
1443    checkpoint57v_post
1444    o change dome exp. to use variable viscosity in side-drag terms.
1445    o remove all the files from the cfc_offline test since they are now
1446      incorporated into tutorial_cfc_offline which has been producing
1447      identical results for a few days of testing
1448    o add new parameter: sideDragFactor to enable half-slip-side BC
1449      and change side-drag S/R to use viscosity from mom_calc_visc
1450      (can switch back by setting sideDragFactor=0.); affects results at
1451      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1452       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1453    o vorticity & strain are now computed without masking, to account for
1454      no-slip-side BC in variable viscosity calculation ; mask is applied
1455      anyway later on, before computing advection/coriolis terms.
1456    o modify exp4 to test new obcs support for reading from external files
1457      and for passive tracers
1458    o fix behavior of ptracers_monitor when monitor output is written to a
1459      netcdf-file; still not independent of monitor.F (writes in the same
1460      file).
1461    o change default value of tRef (put a uniform, meaningful value for ocean
1462      & atmos) and initialize sRef (was missing, as Martin mentioned).
1463    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1464      to be proportional to enstrophy dissipation length.  Thus,
1465       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1466      This is now consistent with Smagorinsky and with the manual.
1467    
1468    checkpoint57u_post
1469    o OBCS and PTRACERS: add open boundary support for passive tracers
1470      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1471        OB-values from file; this is not different from the way theta and salinity
1472        are treated
1473      - however, Orlanski-radiation conditions are not supported, and the model
1474        will stop if you use pTracers and Orlanski at the same time.
1475      - beefed up the rountine obcs_external_fields_load: now only those open
1476        boundary values are overwritten with values from files for which there
1477        are really files, otherwise the OB-fields remain untouched. This makes
1478        it possible to use different OBs at different ends of the domain (as
1479        with EXF)
1480    o reduce number of exch calls in shap_filt (s2).
1481    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1482      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1483    
1484    checkpoint57t_post
1485    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1486    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1487      same truncation, independent of the face number: affects affects several
1488      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1489    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1490      note that biharmonic viscosity + no-slip was not tested in any experiment.
1491    o fix bug in non-linear free-surf side-drag ; generate new output for
1492      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1493    o make mnc honor the writeBinaryPrec flag for most kinds of output
1494    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1495    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1496      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1497    o add brackets in multi-terms sum to get same truncation, independent of
1498      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1499      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1500    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1501      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1502      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1503      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1504      Suggested values of viscosity parameters found in mom_calc_visc.
1505      Many new viscosity diagnostics available.
1506    
1507    checkpoint57s_post
1508    o Add clearing-house for viscosity calculations, mom_calc_visc and
1509      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1510      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1511      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1512      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1513      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1514      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1515      ViscAhStrain and viscAhTension are now retired.
1516    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1517    o In response to JMC's bug report, genmake2 now ignores any soft-links
1518      that it finds in the *current* directory when searching for files.
1519      Soft-links found in any other source directories will still work as
1520      they did before.
1521    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1522      a C routine to unlimit the stack size
1523    o mnc-ify pkg/aim snapshot vars
1524    o mnc-ify pkg/land as requested by Daniel
1525    o various changes to mnc including:
1526      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1527      - output can now be grouped so that all files within a group
1528          change the ITER portion of their names in lock-step together
1529      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1530          and works with both EXCH1 and EXCH2 (but needs more testing)
1531      - writing works for all verification test cases w/ g77 on Linux
1532    
1533    checkpoint57r_post
1534    o make MNC variable initialization happen earlier
1535    o add diagnostics for (almost) each term of the momentum Eq.
1536    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1537    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1538    o remove MINIMAL_TAVE_OUTPUT option ;
1539      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1540    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1541      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1542    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1543    o add time-dependent SST, SSS control
1544    o cost terms in ecco/ modularized (new cost_generic.F)
1545    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1546    o new infrastructure for seaice model vs. obs misfits in seaice/
1547      * driver from the_main_loop.F is seaice_cost_driver.F
1548      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1549      * gradient check in Exp. 6a of natl_box_adjoint/
1550    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1551      (see README file)
1552    
1553    checkpoint57q_post
1554    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1555    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1556      - bug was reported by Jean-Michel and Ian Fenty
1557    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1558      update exp. cpl_aim+ocn output.
1559    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1560      Needed for high-res. runs with large global files
1561      to be able to limit tapelev size
1562    o Changed some tests for adjoint:
1563      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1564      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1565      * global_ocean.90x40x15/ back to default 3-level checkpointing
1566    o Modifications to enable scripted COMMON to MODULE conversion
1567      * verification/OpenAD/code/ has necessary scripts and description;
1568      * converts, compiles and runs successfully;
1569    
1570    checkpoint57p_post
1571    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1572    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1573      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1574    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1575    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1576      (was already the case for dissipation with mom_vecinv,
1577       and also the case for grad.PhiHyd when staggered-timeStep)
1578      This will allow to put dissipation out-off the AB time-stepping.
1579     Unfortunately, affects truncation error. Update output of exp. that "fails"
1580      (cg2d matching number) and leave the others for later: front_relax(10),
1581      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1582      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1583    
1584    checkpoint57o_post
1585    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1586      (2) its ready to be documented during the 20050801 DocFest
1587    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1588      for ideal_2D_oce and lab_sea on linux_ia32_g77
1589    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1590      in global1x1_tot/code_seaice_adj to access indices 32, 33
1591      (worth another tag)
1592    
1593    checkpoint57n_post
1594    o adding precip control xx_precip 32
1595    o adding swflux control xx_swflux 33
1596    o Replacing 10 forcing penalty cost routines by 1 generic.
1597    o Implementing partitioning in time-mean and variable adjustment
1598      for atmos. state.
1599    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1600    o in natl_box_adjoint:
1601      * updated exp 1 to 10
1602        (but does not have time-mean vs. variable split results yet)
1603    o updated global1x1/*_seaice_adj/
1604      to incorporate latest changes
1605    o enable useSingleCpuIO for mdsio vector routines
1606      (applies in particular to tapelev I/O)
1607    o removed inefficient K-loop in all active_file*control*.F
1608    
1609    checkpoint57m_post
1610    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1611      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1612    o pkg/exch2: filling of face-corner halo regions is optional
1613      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1614    
1615    checkpoint57l_post
1616     tag before updating tutorials (pre-release-2)
1617    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1618       for output and interpolation of input fields onto model grid)
1619    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1620       Affects results of exp. rotating_tank ; update output.txt.
1621    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1622          and taking the square quantity and/or using a fraction-weight field.
1623    o fix aim_diagnostics_init.F mate numbers.
1624    o add mnc output capability to diagnostics/diagstat and update
1625      our cvsignore files for the ACSII output generated
1626    
1627    checkpoint57k_post
1628    o lab_sea now uses diagnostics package and provides a suite of
1629      new EXF diagnostics output.
1630    
1631    checkpoint57j_post
1632    o exf
1633      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1634        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1635        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1636      * extended diagnostics output
1637        - now includes all EXF variables
1638        - hs, hl moved to common block
1639        - separate S/R for diagnostics, called after ctrl vector is added
1640        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1641        - EXFqnet contains true Qnet (i.e. includes qsw)
1642      * updated verif. lab_sea, global_with_exf
1643      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1644        to ensure that diagnostics sees a true EXFqnet
1645    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1646    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1647      several times with different frequencies.
1648    o mnc-ify the thsice package as requested by Daniel Enderton
1649      - the monitor--MNC output needs work
1650      - many attributes need to be added (most are currently blank)
1651    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1652      - many attributes need to be added (most are currently blank)
1653    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1654    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1655    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1656      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1657         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1658    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1659     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1660    
1661    checkpoint57i_post
1662    o Diagnostics package was changed: diagnostic allocation is now deactivated
1663      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1664    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1665      add 1rst Order upwind vertical Shear.
1666    o add a quick fix for A/B checkpointing in OFFLINE mode
1667    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1668      end-run around the C/Fortran linking horror in eesup/src/timers.F
1669    o added pkg/runclock: allows user to terminate run based on wall clock
1670    o added non-hydrostatic scaling parameter: nh_am2
1671    o pkg/my82: futile attempt to make results compiler-independent by adding
1672      some "_d 0", etc. no effect.
1673    o for mnc output, fill the 'T' coordinate var with myTime and create a
1674      separate 'iter' variable for iteration count
1675    o pkg/diagnostics:
1676      add new capability: output of Global/Regional & per-level statistics ;
1677      tested against monitor output (including land & thSIce) on various exp.
1678    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1679    
1680    checkpoint57h_done
1681      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1682      data.diagnostics, data.gchem, data.ptracers) is done.
1683    
1684    o pkg/diagnostics: prepare for Global/Regional statistics.
1685      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1686    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1687      and rename it: DIFFERENT_MULTIPLE
1688    
1689    checkpoint57h_post
1690    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1691    o pkg/diagnostics: change output frequency, now in seconds (instead
1692      of Nb of iterations). This requires to change data.diagnostics.
1693    checkpoint57h_pre
1694    
1695    o in mnc, let the user create the output dir if both mnc_outdir_date
1696      and mnc_outdir_num are false
1697    o add fflags() to pkg/diagnostics which allows one to specify, on a
1698      per-file basis, the file precision [default behavior is unchanged]
1699    o added diagnostics to pkg/kpp, including computation of mixed layer
1700      depth based on a temperature/density criterion
1701    o updated verification/natl_box to test the new pkg/kpp diagnostics
1702    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1703    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1704    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1705      not mnc -- this mistake was found by JMC and is now corrected
1706    
1707    checkpoint57g_post
1708    o add Adams-Bashforth 3rd Order time stepping:
1709      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1710      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1711    checkpoint57g_pre
1712    
1713    o make lambda[Theta,Salt]ClimRelax spatially varying
1714      (default remains spatially uniform constant based on tau)
1715    o added new control variables
1716      * init. uVel, vVel, etanN
1717      * lambda[Theta,Salt]ClimRelax
1718    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1719      (suggested by G. Forget)
1720    
1721    checkpoint57f_post
1722    o add parameter "baseTime" = model base time = time at iteration zero
1723      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1724      account for baseTime shift
1725    o move Coriolis arrays from PARAMS.h to GRID.h
1726    checkpoint57f_pre
1727    
1728    o mnc-ifying the seaice package
1729    o introduced an alternative length scale calculation for use in the limiting
1730      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1731    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1732    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1733      as well as grad(vort3).  Made it compatible with both approximate form
1734      for the cubed sphere and full form of these gradients.  Added flag
1735      useFullLeith to select between approximate and full form.  
1736    o add "d0" in getcon.F to reduce differences between compilers/platforms
1737      update output.txt of exp. fizhi-gridalt-hs
1738    o change port_rand funtion to allow to set the seed.
1739    o fix obscure MNC bug involving conversion between reals and integers
1740      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1741        new version is now more standards-compliant
1742    o adjoint-related modifications
1743      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1744      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1745      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1746    
1747    checkpoint57e_post
1748    o Adding eddy stress controls a la Ferreira et al.
1749    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1750    
1751    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1752      update output.txt of exp. fizhi-gridalt-hs
1753    o add more "Z" dimensions and associated coordinate vars to MNC
1754    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1755    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1756      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1757      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1758      months and years.  Requires pkg/cal.
1759    o diagnostics: add pickup functionality
1760      - off by default for backwards compatibility
1761      - current version only uses MDSIO -- MNC will be added
1762    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1763    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1764    
1765    checkpoint57d_post
1766    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1767    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1768      output from the diagnostics package
1769    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1770    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1771      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1772    o add coordinate variables to the MNC output from the diagnostics package
1773    o change MNC-flags default value: true when useMNC=TRUE
1774    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1775      the ability (off by default) to read the grid information using MNC
1776    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1777    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1778    o do snap-shot diagnostics at the middle of the time-interval (instead of
1779      at the end).
1780    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1781      new test for AIM with thSIce + slab-ocean
1782    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1783    o move state variable diagnostics to the beginning of the time step ;
1784      (note: still needs some work specially for snap-shot diagnostics)
1785      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1786    
1787    checkpoint57c_post
1788    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1789    o generate new output.txt files on faulks with g77 & the new -ieee option
1790    checkpoint57c_pre
1791    
1792    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1793      update output.txt of exp. global_ocean.90x40x15
1794    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1795      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1796    o add saltFlux(+File) forcing capability with periodicExternalForcing
1797    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1798    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1799    o improvements for the MNC output from DIAGNOSTICS:
1800      - correct handling of the unlimitied dimension
1801      - all dims now have associated coordinate variables
1802      - variables located at U, V, and Corner ("Z") points are now written
1803        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1804        *all* data points are output
1805    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1806    o added pkg/seaice/seaice_monitor.F
1807    o mdsio_readfield.F can now read files visible only to master MPI process.
1808    o pkg/seaice: some test code for ice-modified ocean stress
1809    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1810      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1811      spurious negative numbers for precipitation and humidity.  Will cause
1812      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1813    o pkg/ctrl/
1814      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1815        May be enabled via doPackDiag
1816      *  introduce z-scaling of
1817         + gradient (doZscalePack) and
1818         + control (doZscaleUnpack)
1819    o pkg/mdsio/
1820      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1821      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1822    
1823    checkpoint57b_post
1824    o simplify options in diagnostics_fill arguments (remove weird combinations)
1825    o fix MNC coordinate variables so that they now contain per-face index
1826      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1827      general, EXCH2 grids are only aligned to a "local" coordinate system
1828    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1829    o Implement instantaneous output within pkg diagnostics:
1830      setting a negative frequency in data.diagnostics produces
1831     "snap-shot" output (as opposed to time-average if freq > 0)
1832    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1833      NOTE: change ptracer diagnostics name: use 2 characters to work with
1834            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1835    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1836      becomes the coordinate variable for the 'T' dimension
1837    o add CF-style coordinate variables to MNC
1838      - just a first cut:  numbers are meaningless on the cubesphere and
1839        missing along the T axis but otherwise it works!
1840    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1841    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1842    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1843      this is based directly on what the model compute, so that the content of
1844      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1845    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1846    o clean up build options files for SunOS, in particular
1847      - remove -traditional from xmakedepend
1848      - change -xarch=v9 to -xarch=native for f77
1849      - restore use of make (not gmake)
1850      - add CC=gcc if using g77
1851    o changes per discussion of AM, JMC, & EH3 today:
1852      - move redundant "grid" variables out of "state" -- in preparation of
1853        creating proper CF-style coordinate variables and in recognition
1854        that any/all grid variables can be easily copied (eg. w/NCO) from
1855        the grid files into any of the other NetCDF files
1856      - *always* output grid variables with MDSIO (this will eventually be
1857        changed)
1858      - output MNC grid file if useMNC is true
1859    o every instance of _END_MASTER() has been found and replaced with
1860      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1861      preprocessors
1862    o re-arrange diagnostics pkg initialisation:
1863     - allow each package to extend the available diagnostics list
1864     - add some checking and fix small problems (multi-threaded, ...)
1865     - new S/R diagnostics_fill (replace fill_diagnostics):
1866       look through the short list of active diag. (instead of the long list)
1867       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1868    
1869    checkpoint57a_post
1870    o this set of changes restores TAMC compatibility
1871      tested for global_ocean.90x40x15 adjoint on trough
1872      (what a pain)
1873    
1874    checkpoint57a_pre
1875    o some modifs in tools/build_options for sunos
1876    o call ctrl_pack for ctrl at end for optimcycle=0
1877    
1878    checkpoint57
1879    o add horizontal bi-harmonic viscosity for vertical velocity
1880      - new parameter viscA4W (defaults to viscA4)
1881      - affects only non-hydrostatic code
1882      - to be done: no-slip lateral boundary conditions
1883    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1884    o implement Implicit Vertical advection for pTracers
1885    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1886      (implemented also for implicit vertical diffusion & advection)
1887    o OBCS: extend application of tracer open boundary conditions
1888      to a strip beyond the boundary of width Olx/Oly
1889    o add call monitor to TAF set of required calls (flow directives)
1890      and include in natl_box_adjoint
1891    o untangle a few ifdefs related to cost, ctrl, autodiff
1892      untangel a few ALLOW_ECCO_OPTIMIZATION
1893    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1894      (theta2, salt2 in ecco_cost_weights)
1895    
1896    checkpoint56c_post
1897    o OBCS as control variables
1898      - update ctrl_ad_diff.list, obcs_ad_diff.list
1899      - remove balance of obcs controls from default
1900      - fix index bug nobcs in ctrl_init
1901      - fix dummy fields filen in ctrl_pack
1902      - add dummy weights for obcs
1903    o lsopt: comment out fort.94 output
1904    o optim:
1905      - remove unnecessary header files
1906      - adjusted namelists
1907      - add xerbla.F to Makefile
1908    o exf:
1909      - multiple modifications of exf_check_range
1910      - unit change in exf_init_runoff from [m/year] to [m/s]
1911    o mdsio:
1912      - i/o-vector change debugLevel from debLevA to debLevB
1913    
1914    checkpoint56b_post
1915    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1916      is called from DO_THE_MODEL_IO
1917      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1918      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1919      - clean up PTRACERS_WRITE_TIMEAVE a little
1920    o add another verification experiment that tests both the cfc-pkg and
1921      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1922      reactive tendencies treated inline with regular timestepping
1923    o testreport previously did a lousy job of comparing small numbers, so
1924      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1925      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1926      testreport.
1927    o ptracers_monitor: bug fix for MPI
1928    
1929    checkpoint56a_post
1930    o GCHEM: finish reorganizating the package
1931      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1932        (introduces another 3D-array for each passive tracer, but only if
1933        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1934        gchemTendency is not needed because the timestep is done separately)
1935      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1936      - GCHEM is now---more or less cleanly---separate from PTRACERS
1937      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1938        so clear to me how that should be done in a general way.
1939    o CFC: improve formatting of output in CFC_ATMOS
1940    o PTRACERS:
1941      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1942        that ALL experiments with ptracers enable can be checked. This makes
1943        GCHEM_MONITOR obsolete.
1944      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1945        monitorFreq
1946      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1947    o add PTRACERS (PTR0[1-5]) to testreport output
1948    o exf_check_range:
1949      * default changed to .TRUE.
1950      * will check values for niter0 if debLevA, every timestep if debLevB
1951      * STOP in exf_check_range if 'out of range'
1952      * range chosen generous to allow for potential extema
1953      TBD: a version with stricter range
1954           permitted range would be runtime parameters
1955  o GMredi:  o GMredi:
1956    - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;    - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1957    - 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 1960  o GCHEM:
1960    - 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
1961      the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP      the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1962    - introduced a useGCHEM runtime flag and applied it everywhere.    - introduced a useGCHEM runtime flag and applied it everywhere.
1963      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1964        this flag is now only visible within GCHEM-pkg routines.
1965      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1966        be replaced by a 3D array that is computed before thermodynamics; for
1967        this, the tracer ID iTracer had to be included into the parameter list
1968        of ptracers_forcing
1969      - set up forward_step to call gchem_forcing, that will replace
1970        gchem_forcing_int in ptracers_forcing
1971      - cleaning up
1972  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
1973    
1974  checkpoint56  checkpoint56

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