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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.1013 by jmc, Tue Aug 5 15:58:18 2008 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7  o adding precip control xx_precip  checkpoint61b
8  o moved ptracer ctrl index 17 -> 32  o exch2:
9      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
10      - no longer depend on the order sequence (N,S,E,W).
11      - 3rd exchange no longer needed (tested with 24 tiles).
12      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
13      - exch_UV_A-grid readily available (but not yet tested).
14      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
15      (both are no longer needed) in exch_uv: no effect in forward run; but
16       get truncation error differences with adjoint exch.
17    o exch2:
18     - change index-bounds storage (moved from target to local tile,
19       more intuitive this way) ; rename/remove some variables.
20     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
21    
22    checkpoint61a
23    o exch2/matlab-topology-generator:
24      fix bug in index bounds for N-S internal exchange (hard to tell if this
25      had any effect on the solution).
26    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
27      is exceeded
28    o testreport: modify syntax of awk, so that it works also with
29      awk, and not only with nawk and gawk
30    
31    checkpoint61
32    o autodiff
33      Change default for TAF usage by removing argument '-nonew_arg'
34      This changes TAF subroutine argument list (ordering of active var.)
35      Omission of this flag leads to incompatibility w.r.t. TAMC
36      To restore TAMC-compatibility, need following modifs:
37      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
38      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
39      Tested TAF version is 1.9.22
40      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
41    
42    checkpoint60
43    --->>> This is the last checkpoint for which generating the adjoint
44    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
45    --->>> by default.
46    --->>> Future checkpoints will ommit this flag by default.
47    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
48    o pkg/grdchk: Add gradient check to etan0 perturbations.
49    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
50    o pkg/autodiff: more flexibility in zeroadj.
51      model/src: modifying do_oceanic_phys.F accordingly.
52    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
53    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
54      special setup of gmredi for which the adjoint is stable
55      enough for parameter optimization.
56    o bridging the gap between eddy stress and GM.
57      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
58          along with a change in CPP option (now ALLOW_EDDYPSI).
59      -> when using GM w/ GM_AdvForm:
60          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
61          is applied either in the tracer Eq. or in momentum Eq.
62          depending on data.gmredi (intro. GM_InMomAsStress).
63      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
64      The key modifications are in model/src/taueddy_external_forcing.F
65      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
66    
67    checkpoint59r
68    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
69      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
70      fix option to read coriolis(@ cell-corner) from files with CS-grid.
71    o pkg/mnc: add some attributes to standard 1D-coordinate variables
72    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
73      mass points, when using mnc for output
74      - add runtime parameter (missing_value, missing_value_int) to override
75        default (which is the value of getcon('UNDEF'))
76    o pkg/mnc: prepare mnc for the actual use of missing values with the
77      diagnostics package: small fix in mnc_cw_readwrite.template and more
78      initialisation of never used fields
79      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
80      versions
81    o pkg/thsice/thsice_ini_vars.F added default initial values so that
82      thermodynamics sea ice solver does not blow up when some initial fields
83      are missing.
84    o move from external_forcing_surf.F to ini_forcing.F
85      the p-coord. hack consisting in using pLoad to set phi0surf ;
86      update output of tutorial_global_oce_in_p (affected @ truncation level).
87    o Freshen up a bit hs94.1x64x5, notably:
88      remove rotationPeriod and tRef=5*0. (adjoint only), and add
89      exactConserv=.TRUE.
90    o pkg/generic_advdiff:
91      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
92      applies to files where Temperature & Salinity 2nd Order moments are used.
93    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
94      this uses a dynamically allocated internal state data structure
95      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
96      and requires a fortran 90 compiler
97    
98    checkpoint59q
99    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
100       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
101    o Refresh tutorial_global_oce_biogeo, notably:
102      - change bathymetry (put back seamounts in ACC, use hFacs)
103      - change EOS (POLY3 --> JMD95Z)
104      - use Bryan-Lewis vertical diffusivity
105      - use multidimensional advection
106      - remove old virtual virtual in dic pkg, now done through ptracer pkg
107      - change a couple of parameters in dic pkg
108    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
109    o pkg/obcs: change default to OBCSfixTopo = .true.,
110      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
111      - replace "debugMode" with "debugLevel .GE. debLevB"
112    o implementation of TAF directives for gchem,cfc,dic
113    o remove "exp5" (replaced by tutorial_deep_convection).
114    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
115      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
116      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
117      --> changes results in exp4, seaice_obcs
118    o tutorial_deep_convection :
119      update the set-up and increase resolution and domain size ; start
120      from pseudo initial conditions = output at t=120mn in order to see
121      something happening when running testreport.
122    o pkg/seaice: add os7mp as an advection scheme
123                  add check for advection schemes
124                  add a flag for restoring T and S underneath sea ice
125    o pkg/my82: add netcdf-support and diagnostics
126    o thsice pkg:
127      - Now hsMax limits snow height by turning it into ice following
128        flooding scheme (and now conserving energy)
129      - Slight rewriting of the formula in thsice_calc_thick.F
130      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
131      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
132    
133    checkpoint59p
134    o gchem / dic / cfc :
135      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
136      - add new parameter files: "data.dic" & "data.cfc" ;
137      - various re-arrangement in initialisation & header file ;
138      - fix tutorial_global_oce_biogeo for multi-threaded test.
139    o pkg/dic: test for "pickup_dic" file when restarting ;
140      if no pickup-file, can restart with a re-initialised pH (same as it did
141      before) providing pickupStrictlyMatch is set to False.
142    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
143      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
144    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
145      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
146    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
147     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
148       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
149    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
150       scheme to use for vorticty-term ;
151     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
152       (with default selectVortScheme, return to original discretisation)
153     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
154    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
155    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
156      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
157      also fix diagnostics VISCAHW & VISCA4W.
158    
159    checkpoint59o
160    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
161    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
162      move a few statemens out the main loop into separate loops
163    o pkg/shelfice:
164      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
165        (kg/m^2/s), does not break tests, because in verification/isomip,
166        rhoConstFresh=rhoConst (by accident)
167      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
168      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
169        new file model/src/seawater.F, so that they are available for all pkgs.
170      - convert potential temperature into in-situ temperature. This changes the
171        isomip tests => update tests
172    o add a flag writePickupAtEnd (default=true) to be able to suppress
173      writing a pickup at the last timestep
174    o tools/mpack-1.6 :
175      - disable automake (not working) and autoconf (not needed).
176      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
177        also cleaner with much less compilation warnings.
178    o pkg/profiles:
179      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
180      (for "less than 32 characters name" compiler requirement)
181    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
182      conditions that have a different sampling frequency than S/T/U/V obcs
183    o pkg/diagnostics (stats-diags):
184      - fix global Min/Max in case 1 processor get only empty tiles
185    o genmake2: replace (4 times)
186         make genmake_tc_1.o >> genmake_warnings 2>&1
187      with
188         COMM="$CC $CFLAGS -c genmake_tc_1.c"
189         echo $COMM >> genmake_warnings
190         $COMM >> genmake_warnings 2>&1
191      to make genmake2 always see the value of CC as specified in the optfile.
192    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
193      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
194      - modify verification advect_cs test to test SOM-advection on CS-grid.
195    o pkg/ctrl:
196      - Rewrite of ctrl_map_ini_ecco.F,
197        introducing a generic routine (ctrl_map_ini_gen.F).
198      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
199    
200    checkpoint59n
201    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
202      number in dedicate array "hdiag":
203      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
204        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
205      - many small changes (integer format) for large number of diagnostics
206      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
207        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
208    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
209      usingSphericalGrid, this allows to define the rotated grid coordinates
210      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
211      geographical coordinates according to the inverse of the rotation defined
212      by the Euler angles, so that Coriolis parameter and online-interpolation by
213      exf works with the geographical coordinates on XC/YC/XG/YG.
214      Naturally, this feature does not work with all packages, so some
215      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
216      profiles), because there the coordinates are assumed to be regular
217      spherical grid coordinates.
218    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
219      - introduce isopycnal diffusion coefficient control.
220    o tools/adjoint_options:
221      - additional control vector components.
222    o pkg/mnc: have mnc create marginally meaning full coordinate variables
223      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
224    o pkg/mypackage:
225      - add example of read/write pickup for state-var ;
226      - add entry points to the main code for state-vars diags & write-pickup.
227    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
228      transitions for useExfYearlyFields
229      - add new subroutine that determines the file to read from for
230        use*YearlyFields = .TRUE. and .FALSE.
231      - add a verification experiment to global_with_exf that tests
232        useExfYearlyFields with USE_EXF_INTERPOLATION defined
233    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
234      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
235      subroutines (which could be generated from a template, because they are
236      almost identical), for now they are included in obcs_prescribe_read.F for
237      simplicity
238    o pkg/exf:
239      - add a little more diagnostic to exf_interp_read (in analogy to
240        mds_read_field, can be turned off with debugLevel < debugLevA=1)
241      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
242        ugly but fast by unrolling short inner loops, inserting a unroll=8
243        directive in routine lagran, and splitting a loop and making do while the
244        outermost loop (the latter requires the intoduction of index arrays)
245    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
246    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
247      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
248    o verification/seaice_obcs: updated for restart test and latest options
249    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
250      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
251      for now this is only available for the C-grid code and also within
252      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
253    
254    checkpoint59m
255    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
256      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
257    o gad_som : fix flux output (& diagnostics) to have same units as other  
258      advection scheme fluxes (was previously multiplied by deltaT).  
259    o added verification/seaice_obcs both to test seaice open boundaries
260      and to provide an example matlab scrpt for generating them
261    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
262    o pkg/salt_plume: clean up salt_plume_frac.F to
263      remove redundancy in PlumeMethod 1 and 4
264    o pkg/kpp: added saltplume diagnostics
265    o pkg/obcs and pkg/seaice:
266      - do not set uice and vice to zero when OB*icefile are unspecified
267      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
268      - moved seaice tracer obcs after call to seaice_growth
269    o pkg/salt_plume: added various options for salt plume depth
270      criterion and for vertical distribution of the salt
271    
272    checkpoint59l
273    o pkg/ptracers: new version of ptracers pickup:
274      read meta file and write only fields which are needed to restart.
275      ( same logic as main pickup file ; also using pickupStrictlyMatch )
276    o pkg/seaice:
277      - add timescale for melting due to warm mixed layer as a means of
278        setting SEAICE_availHeatFrac more conveniently
279      - add a CPP-flag/runtime parameter check for flooding algorithm
280      - reformulated availHeat in seaice_growth.F to be independent of AREA
281    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
282      unit changes
283    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
284    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
285      SX vector computer.
286    o pkg/seaice:
287      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
288        seaice forcing fields can now be read only through pkg/exf
289      - removed some unused halos
290    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
291    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
292      or U/VICE from U/VWIND before computing U/VSTRESS
293    
294    checkpoint59k
295    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
296      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
297    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
298      all experiments pass when compile with un-initialised var. checking option.
299    o added pkg/salt_plume
300    o script to test restart (for now, in MITgcm_contrib/jmc_script)
301    o pkg/seaice: new read/write pickup version.
302      read meta file and write only fields which are needed to restart.
303      ( same logic as main pickup file ; also using pickupStrictlyMatch )
304    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
305    o lab_sea.hb87: modify the domain & update output.hb87.txt :
306      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
307      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
308      process. Fixed here by closing the domain at the Northern boundary.
309    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
310    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
311      a set of consecutive levels in/from a 3-D array.
312    o pkg/ptracers:
313      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
314      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
315    
316    checkpoint59j
317    o in pkgs: dic, obcs, offline, rbcs:
318      standard way to compute coeff. for time interpolation between 2 time reccords
319      which retains full precision (& make results less dependent on compiler).
320      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
321    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
322      packages instead of reading ice cover and wind speed separately
323    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
324     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
325      to allow to compile customized code before the update)
326    o cleaning-up:
327      - fix CPP instruction syntax in pkg/obcs
328      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
329        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
330      - fix some threads issue in IO parts.
331    o pkg/dic:
332      - add tons of "_d 0" (--> much better testreports !)
333       and then update outputs of tutorial_global_oce_biogeo
334    o pkg/mom_fluxform:
335      add a special version of momentum advection intended to conserve momentum
336      next to a bathymetry step or a coastline edge. (default = off = #undef)
337    o new read/write pickup version:
338      - for now, only implemented for main (mdsio) pickup file.
339      - write out only what is needed to restart; merge pickup_nh , pickup_ph
340        and main pickup together.
341      - read meta file; read only what is needed to restart; stop if a field
342        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
343        if it make sense (even if the restart is not perfect).
344      - if no meta file, assume that pickup to read corresponds exactly to
345        a pickup that would currently be written.
346      - read pickup written in the old format (until checkpoint59i) if it
347        recognizes an old meta file (no field-list).
348      - add a meta file in exp. which starts from a pickup: 2 cases:
349        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
350         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
351        b) a meta file describing the content of the associated pickup file
352         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
353    o pkg/mdsio & pkg/rw:
354      - new routine to read a meta file ; new set of routine to read
355        Multiple-fields file (with meta file).
356    o added open boundary conditions capability for seaice
357        HSNOW, HSALT, UICE, and VICE
358    
359    checkpoint59i
360    o adjoint:
361      * fix multiDimAdvection adjoint
362        (partial recomputation problem by TAF for fVerT(:,:,kDown)
363        and comlev1 size definition (maxpass vs. max. number of tracers)
364      * verification/global_ocean.90x45x15 adjoint now tests
365        NLFS and multiDimAdvection using DST3 (=30)
366      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
367    o pkg/kpp: add "_d 0" to real constant (if missing);
368      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
369      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
370    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
371      for internal parameters related to restart process (formerly from PARAMS.h)
372      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
373    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
374      as argument. (only atm2d & obcs write_pickup have not yet been updated)
375    o pkg/monitor:
376      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
377      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
378      - account for deep Atmosphere factor and density factor (anelastic)
379    o added open boundary conditions capability for seaice HEFF and AREA
380    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
381      thermodynamics
382      - requires a little reorganization, which affects the testreport results
383        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
384        so that now the conservative form is tested
385      - add a few comments
386    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
387    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
388    o add new diagnostics to seaice: advective, diffusive fluxes (only for
389      multidim-advection, for scheme 2 they are not filled) and transports,
390      thermodynamic growth rates
391    o change units of EmPmR (inside the code, + within coupling interface)
392      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
393      Affects results @ truncation level (cg2d match) and update output of
394       experiments: lab_sea(6), global_ocean.90x40x15(10),
395      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
396      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
397      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
398      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
399    
400    checkpoint59h
401    o pkg/exf:
402      - improve vectorization by moving if-statement out of loops in
403        exf_mapfields, exf_radiation
404      - exf_bulkformulae.F: introduce 2D fields and vectorize code
405    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
406    o testreport:
407      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
408        monitor & update offline_exf_seaice exp. output.
409      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
410    o pkg/seaice:
411      - bug fix in the evp solver: boundary conditions were affected be
412        masking of zMax/zMin (changes results)
413      - minor bug fix in boundary conditions in seaice_calc_strainrates
414        (changes results for no_slip)
415      - seaice_lsr.F: make interpolation of eta dependent on boundaries
416      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
417      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
418        stress formulation and no-slip boundary conditions
419    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
420      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
421    o pkg/seaice: a first HSALT time stepping equation has been checked in
422    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
423      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
424      without requiring DO-IF statements
425    o pkg/thsice:
426      use continuous power-law function for partition of energy between lateral
427      melting/freezing and thinning/thickening ; old code using step function
428      still available with #undef THSICE_FRACEN_POWERLAW
429      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
430    o testreport: change AD testing : check against results/output_adm.txt
431      using same scripts as for forward test.
432    
433    checkpoint59g
434    o adjoint testing: in preparation for changing testreport:
435      - output format: cost and grad written on separated lines
436      - ad output results in directory "results" (instead of "results_ad")
437    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
438    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
439    o pkg/ecco: allow user defined cost function contributions
440    o testreport:
441      Allow to choose (per experiment) the list of tested output variables
442       and the main variable (used to issue a pass/FAIL ) ;
443      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
444      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
445      Also modify printing of summary:
446       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
447       b) echo the list of tested variables in the individual summary.txt of
448          each experiment.
449    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
450      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
451      (but still depend on the tile decompostion of the domain).
452    o pkg/seaice: change a discretization detail to make the B-grid code
453      "more symmetric". This change is likely to remove all "ridges/leads" that
454      where quasi-aligned with the grid in B-grid solutions. It may also be
455      the solution to the stress coupling issues with the B-grid.
456    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
457      remove .cvsignore from input dir. (since testreport no longer run here).
458    o pkg/thsice:
459     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
460     - fix reshaping of sea-ice just after advection:
461       melt all the ice only if ice-volume is too small.
462     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
463       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
464     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
465    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
466      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
467    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
468      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
469      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
470      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
471      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
472      -> update output.txt
473    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
474     this affects truncation error: -> update output.txt of exp:
475      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
476      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
477    
478    checkpoint59f
479    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
480    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
481      a bounded range (in forward mode)
482    o pkg/ecco, ctrl, autodiff and mom_common:
483     internal parameter controls, completements of implementations
484    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
485    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
486      (not seem any difference in testing results).
487    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
488       at face corners.
489    o pkg/generic_advdiff:
490     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
491      loop range indices for computing vertical advection tendency
492      and do the calculation in the interior only (no overlap) ;
493      for now, only implemented for SOM advection (to save CPU time).
494     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
495    o exch2 adjoint
496      First set of changes:
497      - add exch2 hand-written adjoint templates
498      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
499        This will require cleanup in pkg/autodiff/*.F
500        (changed routines currently kept separate in verif. code/)
501      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
502        that used to hide exch2 or cubed-sphere specific code
503        (commented via 'cph-exch2')
504    o pkg/seaice
505      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
506    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
507       output of global_ocean.cs32x15.thsice .
508    
509    checkpoint59e
510    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
511      for B-grid vector (not yet tested) and C-grid vector (<- only used
512      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
513    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
514      (#ifdef ALLOW_SALT_PLUME)
515    o gather_2d/scatter_2d: removed halo regions
516    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
517      scheme and the corresponding test case (under front_relax dir). For now,
518      only available with Skew-flux form and not yet tested in realistic set-up.
519      adjoint: store directives updated, but gradient checks deteriorated,
520      so maybe GM/Redi adjoint is now broken.
521    o seaice adjoint
522      * add AREA, HEFF, HSNOW as control variable
523        (should not change lab_sea results)
524      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
525    o pkg/seaice:
526      * added computation of saltFlux in seaice_growth;
527        For time being, sea ice salinity is assumed constant
528        contribution of snow flooding to freshening of sea ice is neglected.
529        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
530        defaults to 0.0 in order to maintain backward compatibility.
531        Typical values for SEAICE_salinity are 4 to 10 g/kg.
532      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
533      * added SEAICE_availHeatFrac, which specifies fraction of surface level
534        heat content used to melt or grow ice
535      * commented out cap of HICE: it helps keep ice thinner
536      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
537      * applied OBCS T/S mask to HEFFM sea ice mask
538    
539    checkpoint59d
540    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
541     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
542     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
543    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
544     and change default value of parameter "GM_Small_Number";
545     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
546       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
547       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
548    o pkg/ecco: cost function when applying pkg/smooth to controls
549    o pkg/ctrl: add forcingPrecond run time parameter
550    o pkg/seaice:
551     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
552     - fix bug in metric terms of u-equation in LSR solver (implicit part),
553       changes verification/lab_sea
554     - rearrange implicit part of u-equation in LSR solver to make it easier to
555       read, understand, and debug. This causes changes at the truncation level.
556     - fix (serious) bug in the boundary conditions (sign error in the implicit
557       part) of the LSR solver. Changes all LSR results.
558     - fixed problem with HSNOW initialization to avoid thick snow when AREA
559       is initilized with small values - does not change lab_sea results.
560     - added HsnowFile initialization capability
561    o pkg/smooth: addition to model/src and pkg/ctrl so allow
562     initialization of pkg/smooth and application to control vector
563    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
564    o dependencies: pkg/profiles requires pkg/cal
565    o pkg/profiles:
566     - added option ALLOW_PROFILES_GENERICGRID
567         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
568         that interpolation information (grid points and coefficients) is provided
569         within the netcdf input files.
570         -> sample matlab scripts can be found in MITgcm_contrib/gael
571         that allow you to prepare netcdf input files.
572     - also modified: cleaner include statements, cleaner error print statements,
573       cleaner stops when error, and more tests of the netcdf input files consistency.
574    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
575    o pkg/seaice:
576     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
577       requires a new routine: seaice_diagnostics_fill.F
578     - make sure that seaice does not move if not forced (pressure replacement
579       method, Hibler and Ip, 1995), changes results
580     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
581     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
582       It is turned off by default (=-1.), because it changes the results.
583     - make it possible to read AREA from a file, too.
584    
585    checkpoint59c
586    o add S/R and diagnostics for oceanic mixed-layer depth
587    o move GMRedi call after all vertical mixing schemes (including KPP)
588    o pkg/thsice:
589     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
590      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
591    o pkg/obcs:
592     - bug fix for balance code
593    o pkg/seaice:
594      - allow values of SEAICE_elasticParm > 1
595      - add new parameter SEAICE_evpTauRelax as an alternative
596        to SEAICE_elasticParm
597      - make lsr boundary conditions free slip (by default), changes result
598      - add code for no slip boundary conditions for lsr
599      - set minimum of zeta to zero (and not 4e8) (changes results)
600      - add a cap on AREA after advecting AREA if seaice_growth is not called
601    o change calculation of Visbeck K:
602      - no longer depend on tapering scheme; instead, compute slope (limited
603        by GM_maxSlope). this is equivalent to what was comuted before with
604        clipping or linear tappering.
605      - fix vertical averaging (wrong by 1/2 level)
606      - leave the old version (but will not be maintained) within
607        #ifdef OLD_VISBECK_CALC / #endif
608      - update output of exp. ideal_2D_oce
609    o change error catch in calc_r_star to improve vectorization
610    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
611      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
612    o adjoint:
613      Re-organized adjoint checkpointing according to Matt Mazloff
614      (but with modifs/completions/cleanups)
615      Storing is now bundled into large arrays to optimized I/O
616      (and second step in cleanup of the_main_loop)
617    
618    checkpoint59b
619    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
620      - export/import (between ocean & coupler) fields needed for ocean DIC.
621    o pkg/seaice:
622      - get rid of three more exchanges seaice_calc_viscosities (required
623        different loop boundaries in seaice_lsr and seaice_ocean_stress)
624      - bug fix in seaice_ocean_stress (update of lab_sea required)
625      - reduce loop boundaries to necessary minimum also in seaice_evp
626      - go back to the old way of computing deltaC/Z as the adjoint likes that
627        better
628    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
629      passive tracer to an Age Tracer) + update output.txt
630    o pkg/exf:
631      - implement A-grid / C-grid selection for wind-stress input files.
632      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
633      for now, in exf_bulk_largeyeager04.F only :
634      - change implementation for case where windspeed + 2. components wind-stress
635        are read-in. AND use rhoConstFresh to convert evap.
636    o pkg/seaice:
637      - use correct EXCH_UV for wind-forcing (on A-grid).
638      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
639        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
640    o pkg/exf:
641      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
642      EXF_INTERPOLATION:
643      - merge global_with_exf/code version of exf_interp_read.F
644        to the main code ;
645      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
646        reading the file ; Important: This options needs to be defined to recover
647        previous code.
648        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
649      - no longer loose real*8 precision along the way when using exf_iprec=64.
650    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
651      - change discretisation of evp-solver in order to avoid another exchange
652        (changes lab_sea) and clean up a little
653      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
654        help the adjoint (this also changes the results slightly)
655      - add a few "_d 0" where they had been missing in seaice_evp.F
656      - cleaning up: remove unused seaice_calc_rhs.F
657    o pkg/exf: some cleaning-up:
658      - change various "constants" into runtime parameters
659      - cleaned-up Large&Yeager04 routine which should eventually
660        replace exf_bulkformulae.F (changed names of S/R and CPP)
661        and merged various ALLOW_ATM_WIND options
662     only used with thsice pkg (in thsice_get_exf.F):
663      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
664        which are used when useStabilityFct_overIce=TRUE (= the default)
665      - change default values of ice & snow emissivity and scale downward LW
666        by ice & snow emissivity.
667    o pkg/thsice:
668     fix few little problems, in thsice_calc_thickn.F:
669      - growth vertically (and not laterally) if iceFrac == iceMaskMax
670      - melt only laterally if hIce < hThinIce (as the comments say)
671      and in thsice_extend.F:
672      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
673      - start to form ice as soon as the minimum ice-volume is reachable.
674     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
675      and cpl_aim+ocn
676    o pkg/kpp
677     - move computation of surface related input fields to KPP into a new
678       subroutine kpp_forcing_surf.F
679     - remove wrong (within bi,bj loops) EXCH calls.
680     - little cleaning (add argument myThid in last position, cvs header ...)
681     - for now, fix conservation problem by exchanging KPPviscAz (may not
682       be the best fix)
683    o pkg/seaice
684     - check for inconsistent evp parameter/cpp-flag combination
685     - remove leftover errIO flat for obsolete name list error handling
686    o OpenAD
687     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
688    
689    checkpoint59a
690    o pkg/seaice: some parameter clarifications and a little bit of clean up
691    o pkg/thsice: rename run-time parameters:
692       himin       -> hIceMin
693       himin0      -> hThinIce
694       hihig       -> hThickIce
695       i0          -> i0swFrac
696       transCoef   -> bMeltCoef
697       frac_energy -> fracMelting
698      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
699       with default values (for now) that do not change the results.
700      remove old version of thsice vars advection in pkg/seaice.
701    o in FFIELDS.h:
702      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
703      - make pLoad & sIceLoad always available (but still only used if
704         ATMOSPHERIC_LOADING is #define).
705    o pkg/kpp: replaced _KPP_RL with _RL
706    o bug fixes for vertical diffusivity computations when both KPP and
707        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
708        are no longer updating the vertical diffusivity array
709        (passed as argument) but are (re-) setting those arrays.
710    o pkg/seaice: fix bug in evp solver, while doing that
711      - change (improve?) discretization of stress computations for both
712        cgrid-lsr and evp solver
713      - add a new routine to compute strain rates
714      - the above changes lab_sea results
715      - add no slip conditions for evp solver (off by default), lsr-version
716        may follow
717      - fix exchange for shear at Z-points (does not change lab_sea)
718      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
719        (to force the user to pick a time step since there is not "safe" way
720        of choosing it)
721      - add principal stress diagnostics
722      - rearrange fields for evp a little to avoid having to call a: too many
723        exchanges and b: exchanges for stress trensor components which we do
724        not have.
725      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
726        of evp, complete rewrite for lsr case (latter is does not yet work
727        in all cases)
728    o pkg/kpp: add code to have mixing in shelf ice caverns
729      - add myThid to all kpp routines (long overdue)
730    
731    checkpoint59
732    o pkg/exf:
733      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
734        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
735      - move exf header files from lower_case.h to UPPER_CASE.h ;
736        add missing cvs Header & Name
737      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
738      - add namelist param. selectStressGridPosition, exf_monFreq
739      - retire many _CLIM routines, and remove data.exf_clim
740        + params moved to data.exf
741        + climsst, climsss now handled by exf_set_gen, i.e.
742          climss?period=0 refers to constant field,
743          climss?period=-12 to monthly forcing
744      - split up namelists in data.exf
745    o pkg/seaice:
746      - remove seaice_exch and seaice_exch_uv
747      - remove superfluous exchange of theta
748      - add myThid to seaice_budget_ocean/ice
749      - add new interface for atmospheric wind forcing (C-grid only)
750        + new routine
751        + two new field (taux, tauy for stress over ice)
752        + removed one global field (DAIRN) for C-grid case only
753    o pkg/thsise
754      - 2nd set of modifs for thsice adjoint in conjunction with exf
755    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
756    
757    checkpoint58y_post
758    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
759      vertical diffusivity, similar to that in MOM4; turned on using
760      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
761      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
762    o Added capability for 3D specification of background vertical diffusion
763      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
764      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
765      "data" file that contains the 3D vertical diffusivity coefficients.
766    o ice dynamics (pkg/seaice) with thsice thermodynamics:
767      - add code within pkg thsice to advect & diffuse sea-ice fields
768      similar to (and will replace) what has been added in  seaice_advdiff.F,
769      but: - conserving Mass, Heat & Salt.
770           - better when using non-linear advection scheme (not yet fully tested)
771           - can also be used in atmospheric set-up (for now, only the diffusion).
772    
773    checkpoint58x_post
774    o IO option for global-file compact format:
775      - add options when generating topology (utils/exch2/matlab-topology-generator)
776      - add I/O capability (pkg/mdsio).
777      - adapt utils/matlab/rdmds.m to read this format.
778      for now long-line format not yet supported by pkg/mdsio (& exch2).
779    o shelfice: add a few diagnostics
780    
781    checkpoint58w_post
782    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
783      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
784      (and replace horiVertRatio in NH code).
785      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
786                         and tutorial_plume_on_slope (sensitive to truncation)
787    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
788      directly to drive seaice model (C-grid only)
789    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
790     - reintroduce computation of wind from stress,
791     - compute tau (in exf_bulkformulae.F) from windstress averaged to
792       mass points to avoid tau = 0
793     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
794    o rdmnc.m: make it work with "global" files created with gluemnc
795    o rdmnc.m : some improvements in dealing with singleton dimension
796      (tested on all testreport mnc output files).
797    o genmake2: disable pkg/profiles if netcdf test fails.
798    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
799    o move call to cal_readparms up to make calendar parameters/variable available
800      to all packages
801    
802    checkpoint58v_post
803    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
804      useDynP_inEos_Zc tested.
805    o pkg/exf: changes to properly interpolate/mask/scale initial fields
806    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
807      and portions thereof.  See read_cs.txt for description and examples.
808    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
809      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
810      following the great-circle arc between those 2 points.
811    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
812      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
813    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
814     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
815     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
816     - still needs work (not working with some options ; efficiency to improve)
817       and serious testing.
818     - use this scheme for temperature & salinity in 2 advection test exp.:
819       advect_xy & advect_xz, respectively.
820    
821    checkpoint58u_post
822    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
823    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
824    o testreport: add option "-skipdir" to skip some test.
825    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
826      momentum calculation.
827    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
828    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
829      remove checkpoint.F and the_correction_step.F (no longer used);
830      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
831    o add option (linFSConserveTr) to correct for tracer source/sink due to
832      Linear Free surface
833    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
834    o pkg/thsice: fix reading mnc-pickups
835    
836    checkpoint58t_post
837    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
838    o pkg/mdsio:
839     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
840       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
841       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
842     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
843     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
844       either MDS_READ_FIELD or MDS_WRITE_FIELD )
845     - new S/R (to replace MDSWRITEMETA), which allows to write more
846       informations (variable names, time ...) to meta files.
847     - modify rdmds.m to give back the meta file content.
848    o pkg/diagnostics: change vertical interpolation to be safer, and more
849       flexible (define p-levels to interpolate to in data.diagnostics);
850      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
851       diagnostic pointer.
852    o pkg/seaice: more cleaning up of seaice_growth, added many comments
853    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
854    o fix multi-category seaice:
855     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
856       SEAICE_MULTICATEGORY
857     - fix short wave heat flux
858    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
859       and allow to use EVP solver. Change forward lab_sea: test both EVP
860       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
861    o Initial check-in of lab_sea adjoint
862      (very similar to natl_box_adjoint/code_seaice)
863      * used C-grid and EVP solver
864      * used KPP, GM/Redi
865      * uses inAdExact=.TRUE.
866      * gradient checks fail for both ADM and TLM
867        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
868        f.d. gradients actually seem more problematic than ADM, TLM gradients;
869        issue is related to forward mismatch between g77 an ifort
870    o pkg/seaice: overhaul of thermodynamics
871     - growth.F and groatb.F are replaced by new routine seaice_growth.F
872     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
873     - move a few global fields out of SEAICE.h into seaice_growth.F and
874       make them 2D (FICE/QNETO/ ...)
875     - remove FO (it is the same as QNETO)
876     - introduce a few local fields to avoid modifying external fields such
877       as atemp, etc.
878    
879    checkpoint58s_post
880    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
881      changed exf_set_gen.F so that
882        genperiod=0 means input file is one time-constant field and
883        genperiod=-12 means input file contains 12 monthly means
884    o CG2D: use pre-computed solver main-diagonal (stored in common block);
885      this affects truncation error ; generate new output file for exp. which
886      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
887        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
888        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
889        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
890        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
891        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
892    o start implementation of deep-atmosphere and anelastic formulation
893    o verification: remove 2nd copy of input files and use script "prepare_run"
894      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
895    o mom_common/vecinv/fluxform: fix a few initialisation isssues
896    o profiles: fix for multithreaded case
897    
898    o diagnostics: rename few diags:
899      s/'PRESSURE'/'RCENTER '/g
900      s/'TICE    '/'oceFreez'/g
901      s/'TAUX    '/'oceTAUX '/g
902      s/'TAUY    '/'oceTAUY '/g
903      s/'SWFLUX  '/'oceQsw  '/g
904      s/DIFx/DFxE/g
905      s/DIFy/DFyE/g
906      and add few ocean-forcing diagnostics:
907      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
908    o modifications to pkg/seaice/growth.F and budget.F, which change results of
909      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
910      as actual snow thickness.  It now refers everywhere to effective snow
911      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
912    
913    checkpoint58r_post
914    o modifications to pkg/seaice/growth.F, which change results of
915      lab_sea experiment: fixes pertain to melting snow over open water, to
916      masking EVAP under sea ice, and to using the correct AREA variable for
917      computations of EVAP, PRECIP, HSNOW, and GHEFF
918    o add ability to read bathy, salt, and theta using MNC (off by def)
919    o add flooding algorithm and advection of HSNOW for pkg/seaice;
920      both are turned off by default and do no change any results
921    o seaice advection with pkg/thsice: a step toward the use of non-linear
922      advection scheme, but #ifdef or commented out for now (requires more EXCH).
923    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
924      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
925      in natl_box (affects results @ truncation level: update output.txt)
926    o multi-threading and IO:
927      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
928      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
929        (needed to work with SingleCpuIO): tested in all verif. exp.
930    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
931      affects the results (but none of the verification test uses this scheme).
932    o Adding some pkg/diagnostics capability to pkg/seaice
933      (will certainly be subject to changes)
934    o ctrl: adding new control variables:
935      lwflux, lwdown, evap, snowprecip, apressure, runoff
936    
937    checkpoint58q_post
938    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
939      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
940      high_res_cube configuration by 4% on Columbia.
941    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
942      add (in global_with_exf/code) a version of EXF_INTERP_READ without
943      dynamical allocation (seems to work in multi-threaded).
944    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
945      single CPU io) so that TAF does not have to see EESUPPORT.h
946    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
947    
948    checkpoint58p_post
949    o obcs: stop if obcs is used with useCDscheme = .true.
950    o shelfice:
951     - fix a sign error so that no slip at shelfice interface works
952     - remove stop for combination non-hydrostatic code and shelfice. That does
953       not mean, that the results are correct, but at least they are numerically
954       stable
955    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
956    o added adjoint exch routined for all exch*3d* routines
957      and updated flow directives
958    
959    checkpoint58o_post
960    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
961      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
962    o change controling S/R for writing pickup file (new S/R do_write_pickup)
963      and clean-up reading/writing of pickup files.
964    o fix local version of read/write pickup (NH part) in rotating_tank/code
965    o simplify EXCH interface:
966     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
967     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
968    o added the regrid package
969    o shelfice:
970     - add a simple boundary layer scheme to reduce noise
971     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
972    
973    checkpoint58n_post
974    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
975       local variable (not in common block).
976    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
977      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
978      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
979        to work with SingleCpuIO.
980    o add "_d 0" to real constant of pkg/cfc subroutines ;
981       update exp. cfc_exemple & tutorial_cfc_offline output files.
982    o multi-threading and IO:
983      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
984        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
985      - barrier before and after reading.
986      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
987      - avoid using MDS_WRITELOCAL for LAND pkg output.
988      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
989        common-block variables ; Allows multi-threading with master-thread IO.
990    o change default MAX_NO_THREADS from 32 to 4 ;
991      and stop cleanly when MAX_NO_THREADS is too small.
992    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
993    
994    checkpoint58m_post
995    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
996       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
997    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
998       keep global_ocean.90x40x15 (for AD testing) with former secondary test
999       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1000    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1001        add MITgcm_tutorials (= code + all the tutorials)
1002    o ecco, option to compute cost for total ssh (mean+anom)
1003    o consistent with addition of ptracer and ssh in pkg/profiles
1004    o profiles: adding ptracer and ssh
1005    o testreport: change multi-test output-file name
1006      (from output.txt.{name} to output.{name}.txt)
1007    o profiles: now ok for mutli-tiles case
1008    o seaice: add 4 parameters for different advection schemes for area,
1009      (effective) seaice thickness, enthalphy, and snow height. Their default
1010      is the standard parameter SEAICEadvScheme
1011    o calc_gw:
1012     - add cosFacU in zonal viscous flux (harmonic.visc.).
1013     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1014       of tutorial_plume_on_slope.
1015    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1016    o calc_gw: true flux-form, account for horizontal grid spacing.
1017      update rotating_tank results, but not plume_on_slope (affected at
1018      truncation level, 11 digits).
1019    
1020    checkpoint58l_post
1021    o calc_gw:
1022     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1023     - remove side-drag for now (need to fix it); update plume_on_slope results.
1024     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1025    o commit code to make SST/SSS weights spatially variable
1026      (based on either variable in-situ or variable initial T/S weights)
1027    o pkg/ecco:
1028      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1029        now based on horizontally varying weights wthetaLev, wsaltLev
1030      * cost_averagesflags now returns year indices in addition to day, month
1031      * sflux balance is performed on annual basis
1032        (sflxumm, sfluxmm2, bal_sfluxmm)
1033      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1034        including separate counting and multipliers
1035    o pkg/rbcs
1036      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1037    
1038    checkpoint58k_post
1039    o testreport:
1040     - always build in dir. "build" (if not there, mkdir build instead of building
1041       & running in input)
1042     - run in dir run (if it exists), in build otherwise.
1043     - call prepare_run (if input/prepare_run exists)
1044     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1045    o pkg/exf modifications to interpolation and rotation routines for more
1046       reasonable treatment of North Pole singularity: for tracers North Pole
1047       value is set to northernmost zonal-mean value, for zonal velocity it is
1048       set to zero, and for meridional velocity it is set to northernmost value.
1049    o pkg/exf/exf_check_range.F
1050     - add tile index to diagnostics and move stop statement to the very
1051       end of the routine.
1052    o pkg/diagnostics: (diagnostics_main_init.F)
1053      define title of isomorphic variables according to the current config.
1054    o pkg/thsice with pkg/seaice dynamics:
1055    - fix domain of computation (interior only, required for exf) and do exchanges
1056    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1057    o towards a standard way of dealing with multi-threading in MONITOR
1058      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1059    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1060       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1061    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1062    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1063    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1064       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1065    o tracer advection:
1066     - clean-up and simplify calc_common_factors.F
1067     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1068       advection subroutine (but still not used within DST advection S/R)
1069    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1070    
1071    checkpoint58j_post
1072    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1073      from file (collects calls previously in FORWARD_STEP)
1074    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1075    o adjoint store dir. adjusted accordingly
1076    o genmake2
1077      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1078    
1079    checkpoint58i_post
1080    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1081      on wind stress (SEAICEstressFactor defaults to 1.)
1082    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1083      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1084    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1085      on CS-grid: no longer loosing mass.
1086    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1087    o pkg/ggl90: fix sloppy output and fix a bug
1088    o pkg/seaice: added SEAICEuseEVPpickup parameter
1089      - Set to false in order to start EVP solver with
1090        non-EVP pickup files when using SEAICEuseEVP
1091      - fix sign error in diffusion in seaice_calc_rhs
1092    
1093    checkpoint58h_post
1094    * Modifications for bottom topography control
1095      o replace hFacC by _hFacC at various places
1096      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1097      o add non-self-adjoint cg2d_nsa
1098      o update autodiff support routines
1099      o re-initialise hfac after ctrl_depth_ini
1100      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1101    * Adding verification for 5x5 box (4-layer) bottom topography control
1102    
1103    checkpoint58g_post
1104    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1105       used for mean seasonal cycle, mean diurnal cycle); add an example
1106       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1107    o pkg/ggl90:
1108      - add parameter (minimum surface kinetic energy)
1109      - fix bug (avoiding division by zero)
1110    o couple pkg/thsice to pkg/seaice:
1111      - modify advection in seaice to accomodate new scalar fields to be advected
1112      - only muliDimAdection scheme work with seaice/thsice
1113      - mapping of thsice-variables to seaice-variables, back and forth
1114      - does not break the verification experiments, but does not give the
1115        desired results either
1116    o pkg/seaice
1117      - make (default) second order advection a bit less confusing?
1118    
1119    checkpoint58f_post
1120    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1121      to pkg/seaice):
1122      - new routines thsice_map_exf and thsice_get_exf provide the interface
1123      - add an additional formal parameter to thsice_solve4temp
1124    o pkg/exf:
1125      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1126      - correct Stefan-Boltzmann constant
1127      - new parameter for longwave surface emittance
1128      - separate some stuff from exf_bulkformulae into new routines  
1129        exf_radiation, exf_wind
1130      - add new parameters and constants: longwave emissivity for ocean, ice
1131        and snow, evaporation parameters over ice
1132      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1133        either wind from stress or stress from wind
1134    o pkg/thSIce:
1135    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1136    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1137       and THSICE_CALC_THICKN
1138    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1139    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1140      to make debugging easier.
1141    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1142    o pkg/bulk_force:
1143      - clean-up comments and parameters ;
1144      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1145    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1146      generate new output for test-experiment: aim.5l_cs.thSI
1147    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1148      testreport accordingly
1149    
1150    checkpoint58e_post
1151    o SEAICE_CGRID adjoint done
1152    o R_STAR adjoint implemented.
1153      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1154      * need to sort out init. of h0facc, etc.
1155    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1156      to be able to use it in pure forward.
1157    
1158    checkpoint58d_post
1159    o upgrade simple test-experiment to tutorial example:
1160     step.1: duplicate the experiment and (step.2) will remove the old copy.
1161      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1162      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1163      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1164      tutorial_global_oce_biogeo    <- copy of dic_example
1165      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1166      tutorial_plume_on_slope       <- copy of plume_on_slope
1167      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1168      tutorial_global_oce_optim     <- empty for now (David ?)
1169      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1170     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1171    o correct a sign problem in cost_scat.F
1172    o obcs and ptracers: fix boundary conditions for advections schemes
1173      with larger stencil
1174    o thsice adjoint: start
1175    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1176      completeness
1177    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1178      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1179    o ptracers adjoint:
1180      * avoid extensive recomputatations
1181      * fix missing re-init. of gptr (missed by TAF)
1182    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1183      me to turn off the excessive output to STDOUT that this package produces
1184    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1185      and add those terms in Vector-Invariant formulation.
1186    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1187      if the control period (xx_hfluxperiod etc) is 0
1188    o in profiles pkg, clean routines and fix details
1189    o in ecco pkg, reading ssh data:
1190      fix problem in case the model does not start at iter0=0
1191    o fix mnc-pickup/restart for ptracers
1192    o new package prifiles:
1193      code to compute profile-based cost by Gael Forget
1194      (modifs in ecco, ctrl, autodiff)
1195    o Benign bug fix in initialization (spotted by M. Mazloff) of
1196      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1197    
1198    checkpoint58c_post
1199    o adjoint: finish NLFS adjoint and provide reference output in
1200      verification/global_ocean.90x40x15/results_ad_nlfs
1201    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1202      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1203      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1204      with SEAICE_CGRID defined.
1205    o move calendarDumps from "data" to "data.cal" and clean-up the code
1206      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1207    o add useEXF & useCAL flags (for now, set in hard-coded way)
1208    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1209      (were missing in NH mode, and wrong in quasihydrostatic mode).
1210      waiting for Chris updated version of calc_gw to add those CALLs.
1211    o fix bug in quasihydrostatic S/R ;
1212      add a test for this option: global_ocean.90x40x15.qshyd
1213    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1214      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1215    o add on/off flag useOffLine for package OFFLINE
1216    o seaice:
1217      - modify advection so that it works also on the C-grid
1218      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1219        problem in multi-tile runs with C-grid
1220      - add flags for clipping ice velocities and/or masking solver forcing
1221      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1222        C-grid solver
1223      - added a few comments to seaice_diffusion.F
1224      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1225        are now exclusive)
1226      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1227        required re-ordering the code a little:
1228       + make DAIRN global variable (defined in SEAICE)
1229       + move computation of the viscosities eta and zeta into a new separate
1230         routine (because I need to recompute them in seaice_ocean_stress.F)
1231    
1232    checkpoint58b_post
1233    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1234      update output.txt of exp. aim.5l_cs.thSI
1235    o various mnc cleanups and improvements:
1236      + shrink lookup tables by factor of ~4
1237      + better error reporting when running out of lookup space
1238      + able to handle longer path/file names (up to 500 chars)
1239    o adjoint:
1240      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1241      - TBD: "hidden" mom_vecinv recomp. in dynamics
1242    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1243     (allow to differentiate between forcing components using new integer flags:
1244      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1245     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1246    o ecco
1247      - enable trend removal from SSH anomaly obs.
1248    o adjoint
1249      - a fix for PmEpR when #undef EXACT_CONSERV
1250      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1251      - try to fix "hidden" recomp. in forward_step for NLFS
1252        (NLFS seems broken sometimes after I checked it in)
1253    o seaice:
1254     - add c-grid version of the dynamic solver:
1255       + three new routines that are the c-grid substitute lsr, dynsolver
1256         and ostres
1257       + put a few fields that were local to dynsolver into global common
1258         blocks, so that I can move the computation of stresses etc into
1259         seaice_lsr (saves coding but may break the adjoint).
1260     - replace more hardwired parameters by runtime parameters
1261     - add ice masks that mask the rhs of the implicit solvers where there
1262       is no ice (commented out in seaice_dynsolver, because i am not sure
1263       if this works properly), eventually this should replace the clipping
1264       of ice velocities in seaice_dynsolver to +/-40cm/s.
1265    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1266      include it only where its needed
1267    o move balancing of fluxes before the call of external_forcing_surf
1268    o seaice:
1269      - correct units of turning angles (now they are really in degrees)
1270      - move computation of GWATX/Y out of main routine into dynsolver
1271      - initialize GWATX/Y in seaice_init
1272    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1273      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1274    o seaice: add runtime flags for turning angles (default to zero)
1275    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1276      and trend from exf forcing and ctrl control adjustments
1277    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1278      (since checkpoint57x_post)
1279    o change the default rotation period to 86164.s = the Earth rotation
1280    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1281      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1282    o seaice advection: add code for choosing between the default (2nd order
1283      central differences) and multiDim advection schemes provided by
1284      pkg/generic_advdiff
1285    o seaice:
1286      - removed all references to SEAICE_GRID.h fields from
1287        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1288        (cubed-sphere configuration will change a little)
1289      - grid computations in seaice_init are obsolete now.
1290      - cleaned up code a little so that is easier to read (hopefully).
1291      - added new (better?) discretizations of default advection and diffusion
1292        (turn on with SEAICEuseFluxForm)
1293      - replace 1 in 3d global fields by kSurface in growth.F
1294      
1295    checkpoint58a_post
1296    o seaice:
1297      - bug fix in advect.F
1298    o shelfice:
1299      - separate shelfice load anomaly from pload (breaks with time
1300        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1301        Its default is 0., but it may be computed more cleverly from (unknown)
1302        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1303        done offline. A good approximation of the pressure load anomaly is
1304        necessary to avoid large initial adjustment processes underneath
1305        deep-reaching shelfice.
1306      - small fix in ISOMIP shelfice_thermodynamics
1307      - add more sophisticated thermodynamics of Hellmer (1989), this is
1308        now the default
1309      - give a few constants more intuitive names
1310    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1311      if bulk formulae are used in long integration (especially EmPmR). Turn
1312      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1313      if balancePrintMean, the imbalance that is substracted is printed to
1314      STDOUT.
1315    o fix bug (typo) in obcs_apply_eta.F
1316    o add a new package shelfice which enables us to model the circulation
1317      underneath shelf-ice with draughts of hundreds of meters.
1318     - works
1319     - to do: + include improved thermodynamics
1320              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1321                instead of new field kTopC
1322              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1323                instead of new field R_shelfIce and new code in ini_depth.F
1324                and ini_mask_etc.F?
1325              + adjust vertical mixing schemes?
1326    o seaice pkg:
1327     - add a cpp-flag to include a simple formula for a salinity dependent
1328       freezing point of sea water at the surface
1329     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1330       meridional stresses are now different (and hopefully correct)
1331    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1332       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1333       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1334    o pkg/diagnostics: add options and parameters for regional-statistics
1335       diagnostics ; define regions by reading a region-mask from a file
1336       (might add other options later)
1337    o pkg/bulk_force:
1338     - add option and parameters to use AIM surface-flux formulae.
1339     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1340       others forcing fields (defined in PARM05, parameter file "data") are loaded
1341       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1342     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1343     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1344     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1345       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1346     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1347    
1348    checkpoint58
1349    o add "--embed-source" option to genmake2 which, when the supporting
1350      tools can be compiled (as determined by genmake2) will turn on the
1351      embed_files package which then embeds the entire MITgcm source code
1352      (*.[fFhc] + Makefile) used for the build within the executable
1353      - requested by CNH but off by default
1354      - adds a paltry <9MB to the mitgcmuv executable in most cases
1355      - only writes the output when useEMBEDSRC in eedata is true
1356    o clean up 3-dim. relaxation codes:
1357      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1358      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1359      * Thanks to Tom Haine for testing!
1360    
1361    checkpoint57z_post
1362    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1363      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1364    o fix the pickup behavior for obcs in combination with ptracers
1365    o fix a bug in ptracers_external_fields_load
1366    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1367      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1368    o transfered surface NH pressure to eta field (if exactConserv).
1369    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1370         and update lab_sea output.txt file.
1371    o completing 3-dim. relaxation code: additional term
1372         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1373      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1374      * At compile time, in "EXF_OPTIONS.h" set
1375          #define  ALLOW_CLIMTEMP_RELAXATION
1376          #define  ALLOW_CLIMSALT_RELAXATION
1377      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1378          tauThetaClimRelax3Dim = 15552000.0,
1379          tauSaltClimRelax3Dim  = 15552000.0,
1380      * 3 cases:
1381          1) Use a constant-in-time 3-dim. field
1382          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1383          3) Real-time relax. to time-evolving prescribed field
1384    o Adding Laplacian-type smoothness constraint on
1385      initial and boundary (forcing) controls (ic, bc)
1386      * enable at compile-time via
1387        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1388      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1389      * Absolute scale somewhat unclear so far
1390      * no area weighting was included since no other cost term does so far
1391    
1392    checkpoint57y_post
1393    First step for a NLFS adjoint
1394    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1395    o new init. routines for calc_r_star, calc_surf_dr
1396    o still need to deal with ini_masks_etc
1397    o testreport seemed happy
1398    checkpoint57y_pre
1399    
1400    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1401    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1402    o add new offset feature to offline pkg (plus minor cleanup)
1403    o cfc fixes for final year of integration
1404    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1405      be in GCHEM_OPTIONS).
1406    
1407    checkpoint57x_post
1408    o fix testreport Pb in multiple test experiment.
1409    o cleanup our namelist syntax in verification:
1410      - make it more F95 standards compliant (some work still needed)
1411      - allows the vast majority of our tests to work with gfortran
1412    o Non-Hydrostatic:
1413     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1414     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1415    o Allow to apply AB on T,S rather than on AB(gT,gS):
1416     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1417     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1418       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1419     - need a "clever" read_pickup to restart from the other AB formulation
1420    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1421    o remove some unused variables (reduces number of compiler warnings)
1422    o adjoint
1423      * Disable useVariableViscosity for adjoint for time being
1424        (there are a number of extensive recomputations)
1425      * Initialize certain variables needed for adjoint
1426    
1427    checkpoint57w_post
1428    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1429                 fix the singleCpuIO RS version of MDSWRITEFIELD
1430       and add a WARNING if using globalFiles=T with multi-processors.
1431    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1432      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1433    o tracer advection scheme:
1434      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1435       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1436       was not very convenient).
1437      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1438       (further tests needed for the implicit DST & Flux-Limiter schemes).
1439    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1440      and sRef for convenience, handy, when you want to initialize
1441      ptracers in a large domain with a constant non-zero value. Also,
1442      untangle ptracers_init.F a little.
1443    
1444    checkpoint57v_post
1445    o change dome exp. to use variable viscosity in side-drag terms.
1446    o remove all the files from the cfc_offline test since they are now
1447      incorporated into tutorial_cfc_offline which has been producing
1448      identical results for a few days of testing
1449    o add new parameter: sideDragFactor to enable half-slip-side BC
1450      and change side-drag S/R to use viscosity from mom_calc_visc
1451      (can switch back by setting sideDragFactor=0.); affects results at
1452      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1453       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1454    o vorticity & strain are now computed without masking, to account for
1455      no-slip-side BC in variable viscosity calculation ; mask is applied
1456      anyway later on, before computing advection/coriolis terms.
1457    o modify exp4 to test new obcs support for reading from external files
1458      and for passive tracers
1459    o fix behavior of ptracers_monitor when monitor output is written to a
1460      netcdf-file; still not independent of monitor.F (writes in the same
1461      file).
1462    o change default value of tRef (put a uniform, meaningful value for ocean
1463      & atmos) and initialize sRef (was missing, as Martin mentioned).
1464    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1465      to be proportional to enstrophy dissipation length.  Thus,
1466       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1467      This is now consistent with Smagorinsky and with the manual.
1468    
1469    checkpoint57u_post
1470    o OBCS and PTRACERS: add open boundary support for passive tracers
1471      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1472        OB-values from file; this is not different from the way theta and salinity
1473        are treated
1474      - however, Orlanski-radiation conditions are not supported, and the model
1475        will stop if you use pTracers and Orlanski at the same time.
1476      - beefed up the rountine obcs_external_fields_load: now only those open
1477        boundary values are overwritten with values from files for which there
1478        are really files, otherwise the OB-fields remain untouched. This makes
1479        it possible to use different OBs at different ends of the domain (as
1480        with EXF)
1481    o reduce number of exch calls in shap_filt (s2).
1482    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1483      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1484    
1485    checkpoint57t_post
1486    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1487    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1488      same truncation, independent of the face number: affects affects several
1489      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1490    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1491      note that biharmonic viscosity + no-slip was not tested in any experiment.
1492    o fix bug in non-linear free-surf side-drag ; generate new output for
1493      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1494    o make mnc honor the writeBinaryPrec flag for most kinds of output
1495    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1496    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1497      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1498    o add brackets in multi-terms sum to get same truncation, independent of
1499      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1500      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1501    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1502      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1503      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1504      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1505      Suggested values of viscosity parameters found in mom_calc_visc.
1506      Many new viscosity diagnostics available.
1507    
1508    checkpoint57s_post
1509    o Add clearing-house for viscosity calculations, mom_calc_visc and
1510      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1511      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1512      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1513      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1514      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1515      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1516      ViscAhStrain and viscAhTension are now retired.
1517    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1518    o In response to JMC's bug report, genmake2 now ignores any soft-links
1519      that it finds in the *current* directory when searching for files.
1520      Soft-links found in any other source directories will still work as
1521      they did before.
1522    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1523      a C routine to unlimit the stack size
1524    o mnc-ify pkg/aim snapshot vars
1525    o mnc-ify pkg/land as requested by Daniel
1526    o various changes to mnc including:
1527      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1528      - output can now be grouped so that all files within a group
1529          change the ITER portion of their names in lock-step together
1530      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1531          and works with both EXCH1 and EXCH2 (but needs more testing)
1532      - writing works for all verification test cases w/ g77 on Linux
1533    
1534    checkpoint57r_post
1535    o make MNC variable initialization happen earlier
1536    o add diagnostics for (almost) each term of the momentum Eq.
1537    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1538    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1539    o remove MINIMAL_TAVE_OUTPUT option ;
1540      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1541    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1542      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1543    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1544    o add time-dependent SST, SSS control
1545    o cost terms in ecco/ modularized (new cost_generic.F)
1546    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1547    o new infrastructure for seaice model vs. obs misfits in seaice/
1548      * driver from the_main_loop.F is seaice_cost_driver.F
1549      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1550      * gradient check in Exp. 6a of natl_box_adjoint/
1551    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1552      (see README file)
1553    
1554    checkpoint57q_post
1555    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1556    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1557      - bug was reported by Jean-Michel and Ian Fenty
1558    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1559      update exp. cpl_aim+ocn output.
1560    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1561      Needed for high-res. runs with large global files
1562      to be able to limit tapelev size
1563    o Changed some tests for adjoint:
1564      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1565      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1566      * global_ocean.90x40x15/ back to default 3-level checkpointing
1567    o Modifications to enable scripted COMMON to MODULE conversion
1568      * verification/OpenAD/code/ has necessary scripts and description;
1569      * converts, compiles and runs successfully;
1570    
1571    checkpoint57p_post
1572    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1573    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1574      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1575    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1576    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1577      (was already the case for dissipation with mom_vecinv,
1578       and also the case for grad.PhiHyd when staggered-timeStep)
1579      This will allow to put dissipation out-off the AB time-stepping.
1580     Unfortunately, affects truncation error. Update output of exp. that "fails"
1581      (cg2d matching number) and leave the others for later: front_relax(10),
1582      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1583      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1584    
1585    checkpoint57o_post
1586    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1587      (2) its ready to be documented during the 20050801 DocFest
1588    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1589      for ideal_2D_oce and lab_sea on linux_ia32_g77
1590    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1591      in global1x1_tot/code_seaice_adj to access indices 32, 33
1592      (worth another tag)
1593    
1594    checkpoint57n_post
1595    o adding precip control xx_precip 32
1596    o adding swflux control xx_swflux 33
1597    o Replacing 10 forcing penalty cost routines by 1 generic.
1598    o Implementing partitioning in time-mean and variable adjustment
1599      for atmos. state.
1600    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1601  o in natl_box_adjoint:  o in natl_box_adjoint:
1602    * updated: results_bulk/    * updated exp 1 to 10
1603    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1604    o updated global1x1/*_seaice_adj/
1605      to incorporate latest changes
1606    o enable useSingleCpuIO for mdsio vector routines
1607      (applies in particular to tapelev I/O)
1608    o removed inefficient K-loop in all active_file*control*.F
1609    
1610  checkpoint57m_post  checkpoint57m_post
1611  o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)  o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)

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