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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.976 by mlosch, Mon Apr 21 11:37:38 2008 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7  o adding precip control xx_precip  o pkg/seaice: add os7mp as an advection scheme
8  o moved ptracer ctrl index 17 -> 32                add check for advection schemes
9    o pkg/my82: add netcdf-support and diagnostics
10    o thsice pkg:
11      - Now hsMax limits snow heitght by turning it into ice following
12        flooding scheme (and now conserving energy)
13      - Slight rewriting of the formula in thsice_calc_thick.F
14      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
15        --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
16    
17    checkpoint59p
18    o gchem / dic / cfc :
19      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
20      - add new parameter files: "data.dic" & "data.cfc" ;
21      - various re-arrangement in initialisation & header file ;
22      - fix tutorial_global_oce_biogeo for multi-threaded test.
23    o pkg/dic: test for "pickup_dic" file when restarting ;
24      if no pickup-file, can restart with a re-initialised pH (same as it did
25      before) providing pickupStrictlyMatch is set to False.
26    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
27      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
28    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
29      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
30    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
31     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
32       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
33    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
34       scheme to use for vorticty-term ;
35     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
36       (with default selectVortScheme, return to original discretisation)
37     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
38    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
39    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
40      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
41      also fix diagnostics VISCAHW & VISCA4W.
42    
43    checkpoint59o
44    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
45    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
46      move a few statemens out the main loop into separate loops
47    o pkg/shelfice:
48      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
49        (kg/m^2/s), does not break tests, because in verification/isomip,
50        rhoConstFresh=rhoConst (by accident)
51      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
52      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
53        new file model/src/seawater.F, so that they are available for all pkgs.
54      - convert potential temperature into in-situ temperature. This changes the
55        isomip tests => update tests
56    o add a flag writePickupAtEnd (default=true) to be able to suppress
57      writing a pickup at the last timestep
58    o tools/mpack-1.6 :
59      - disable automake (not working) and autoconf (not needed).
60      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
61        also cleaner with much less compilation warnings.
62    o pkg/profiles:
63      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
64      (for "less than 32 characters name" compiler requirement)
65    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
66      conditions that have a different sampling frequency than S/T/U/V obcs
67    o pkg/diagnostics (stats-diags):
68      - fix global Min/Max in case 1 processor get only empty tiles
69    o genmake2: replace (4 times)
70         make genmake_tc_1.o >> genmake_warnings 2>&1
71      with
72         COMM="$CC $CFLAGS -c genmake_tc_1.c"
73         echo $COMM >> genmake_warnings
74         $COMM >> genmake_warnings 2>&1
75      to make genmake2 always see the value of CC as specified in the optfile.
76    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
77      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
78      - modify verification advect_cs test to test SOM-advection on CS-grid.
79    o pkg/ctrl:
80      - Rewrite of ctrl_map_ini_ecco.F,
81        introducing a generic routine (ctrl_map_ini_gen.F).
82      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
83    
84    checkpoint59n
85    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
86      number in dedicate array "hdiag":
87      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
88        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
89      - many small changes (integer format) for large number of diagnostics
90      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
91        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
92    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
93      usingSphericalGrid, this allows to define the rotated grid coordinates
94      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
95      geographical coordinates according to the inverse of the rotation defined
96      by the Euler angles, so that Coriolis parameter and online-interpolation by
97      exf works with the geographical coordinates on XC/YC/XG/YG.
98      Naturally, this feature does not work with all packages, so some
99      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
100      profiles), because there the coordinates are assumed to be regular
101      spherical grid coordinates.
102    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
103      - introduce isopycnal diffusion coefficient control.
104    o tools/adjoint_options:
105      - additional control vector components.
106    o pkg/mnc: have mnc create marginally meaning full coordinate variables
107      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
108    o pkg/mypackage:
109      - add example of read/write pickup for state-var ;
110      - add entry points to the main code for state-vars diags & write-pickup.
111    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
112      transitions for useExfYearlyFields
113      - add new subroutine that determines the file to read from for
114        use*YearlyFields = .TRUE. and .FALSE.
115      - add a verification experiment to global_with_exf that tests
116        useExfYearlyFields with USE_EXF_INTERPOLATION defined
117    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
118      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
119      subroutines (which could be generated from a template, because they are
120      almost identical), for now they are included in obcs_prescribe_read.F for
121      simplicity
122    o pkg/exf:
123      - add a little more diagnostic to exf_interp_read (in analogy to
124        mds_read_field, can be turned off with debugLevel < debugLevA=1)
125      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
126        ugly but fast by unrolling short inner loops, inserting a unroll=8
127        directive in routine lagran, and splitting a loop and making do while the
128        outermost loop (the latter requires the intoduction of index arrays)
129    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
130    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
131      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
132    o verification/seaice_obcs: updated for restart test and latest options
133    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
134      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
135      for now this is only available for the C-grid code and also within
136      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
137    
138    checkpoint59m
139    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
140      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
141    o gad_som : fix flux output (& diagnostics) to have same units as other  
142      advection scheme fluxes (was previously multiplied by deltaT).  
143    o added verification/seaice_obcs both to test seaice open boundaries
144      and to provide an example matlab scrpt for generating them
145    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
146    o pkg/salt_plume: clean up salt_plume_frac.F to
147      remove redundancy in PlumeMethod 1 and 4
148    o pkg/kpp: added saltplume diagnostics
149    o pkg/obcs and pkg/seaice:
150      - do not set uice and vice to zero when OB*icefile are unspecified
151      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
152      - moved seaice tracer obcs after call to seaice_growth
153    o pkg/salt_plume: added various options for salt plume depth
154      criterion and for vertical distribution of the salt
155    
156    checkpoint59l
157    o pkg/ptracers: new version of ptracers pickup:
158      read meta file and write only fields which are needed to restart.
159      ( same logic as main pickup file ; also using pickupStrictlyMatch )
160    o pkg/seaice:
161      - add timescale for melting due to warm mixed layer as a means of
162        setting SEAICE_availHeatFrac more conveniently
163      - add a CPP-flag/runtime parameter check for flooding algorithm
164      - reformulated availHeat in seaice_growth.F to be independent of AREA
165    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
166      unit changes
167    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
168    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
169      SX vector computer.
170    o pkg/seaice:
171      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
172        seaice forcing fields can now be read only through pkg/exf
173      - removed some unused halos
174    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
175    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
176      or U/VICE from U/VWIND before computing U/VSTRESS
177    
178    checkpoint59k
179    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
180      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
181    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
182      all experiments pass when compile with un-initialised var. checking option.
183    o added pkg/salt_plume
184    o script to test restart (for now, in MITgcm_contrib/jmc_script)
185    o pkg/seaice: new read/write pickup version.
186      read meta file and write only fields which are needed to restart.
187      ( same logic as main pickup file ; also using pickupStrictlyMatch )
188    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
189    o lab_sea.hb87: modify the domain & update output.hb87.txt :
190      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
191      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
192      process. Fixed here by closing the domain at the Northern boundary.
193    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
194    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
195      a set of consecutive levels in/from a 3-D array.
196    o pkg/ptracers:
197      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
198      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
199    
200    checkpoint59j
201    o in pkgs: dic, obcs, offline, rbcs:
202      standard way to compute coeff. for time interpolation between 2 time reccords
203      which retains full precision (& make results less dependent on compiler).
204      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
205    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
206      packages instead of reading ice cover and wind speed separately
207    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
208     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
209      to allow to compile customized code before the update)
210    o cleaning-up:
211      - fix CPP instruction syntax in pkg/obcs
212      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
213        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
214      - fix some threads issue in IO parts.
215    o pkg/dic:
216      - add tons of "_d 0" (--> much better testreports !)
217       and then update outputs of tutorial_global_oce_biogeo
218    o pkg/mom_fluxform:
219      add a special version of momentum advection intended to conserve momentum
220      next to a bathymetry step or a coastline edge. (default = off = #undef)
221    o new read/write pickup version:
222      - for now, only implemented for main (mdsio) pickup file.
223      - write out only what is needed to restart; merge pickup_nh , pickup_ph
224        and main pickup together.
225      - read meta file; read only what is needed to restart; stop if a field
226        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
227        if it make sense (even if the restart is not perfect).
228      - if no meta file, assume that pickup to read corresponds exactly to
229        a pickup that would currently be written.
230      - read pickup written in the old format (until checkpoint59i) if it
231        recognizes an old meta file (no field-list).
232      - add a meta file in exp. which starts from a pickup: 2 cases:
233        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
234         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
235        b) a meta file describing the content of the associated pickup file
236         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
237    o pkg/mdsio & pkg/rw:
238      - new routine to read a meta file ; new set of routine to read
239        Multiple-fields file (with meta file).
240    o added open boundary conditions capability for seaice
241        HSNOW, HSALT, UICE, and VICE
242    
243    checkpoint59i
244    o adjoint:
245      * fix multiDimAdvection adjoint
246        (partial recomputation problem by TAF for fVerT(:,:,kDown)
247        and comlev1 size definition (maxpass vs. max. number of tracers)
248      * verification/global_ocean.90x45x15 adjoint now tests
249        NLFS and multiDimAdvection using DST3 (=30)
250      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
251    o pkg/kpp: add "_d 0" to real constant (if missing);
252      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
253      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
254    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
255      for internal parameters related to restart process (formerly from PARAMS.h)
256      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
257    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
258      as argument. (only atm2d & obcs write_pickup have not yet been updated)
259    o pkg/monitor:
260      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
261      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
262      - account for deep Atmosphere factor and density factor (anelastic)
263    o added open boundary conditions capability for seaice HEFF and AREA
264    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
265      thermodynamics
266      - requires a little reorganization, which affects the testreport results
267        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
268        so that now the conservative form is tested
269      - add a few comments
270    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
271    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
272    o add new diagnostics to seaice: advective, diffusive fluxes (only for
273      multidim-advection, for scheme 2 they are not filled) and transports,
274      thermodynamic growth rates
275    o change units of EmPmR (inside the code, + within coupling interface)
276      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
277      Affects results @ truncation level (cg2d match) and update output of
278       experiments: lab_sea(6), global_ocean.90x40x15(10),
279      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
280      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
281      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
282      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
283    
284    checkpoint59h
285    o pkg/exf:
286      - improve vectorization by moving if-statement out of loops in
287        exf_mapfields, exf_radiation
288      - exf_bulkformulae.F: introduce 2D fields and vectorize code
289    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
290    o testreport:
291      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
292        monitor & update offline_exf_seaice exp. output.
293      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
294    o pkg/seaice:
295      - bug fix in the evp solver: boundary conditions were affected be
296        masking of zMax/zMin (changes results)
297      - minor bug fix in boundary conditions in seaice_calc_strainrates
298        (changes results for no_slip)
299      - seaice_lsr.F: make interpolation of eta dependent on boundaries
300      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
301      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
302        stress formulation and no-slip boundary conditions
303    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
304      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
305    o pkg/seaice: a first HSALT time stepping equation has been checked in
306    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
307      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
308      without requiring DO-IF statements
309    o pkg/thsice:
310      use continuous power-law function for partition of energy between lateral
311      melting/freezing and thinning/thickening ; old code using step function
312      still available with #undef THSICE_FRACEN_POWERLAW
313      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
314    o testreport: change AD testing : check against results/output_adm.txt
315      using same scripts as for forward test.
316    
317    checkpoint59g
318    o adjoint testing: in preparation for changing testreport:
319      - output format: cost and grad written on separated lines
320      - ad output results in directory "results" (instead of "results_ad")
321    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
322    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
323    o pkg/ecco: allow user defined cost function contributions
324    o testreport:
325      Allow to choose (per experiment) the list of tested output variables
326       and the main variable (used to issue a pass/FAIL ) ;
327      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
328      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
329      Also modify printing of summary:
330       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
331       b) echo the list of tested variables in the individual summary.txt of
332          each experiment.
333    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
334      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
335      (but still depend on the tile decompostion of the domain).
336    o pkg/seaice: change a discretization detail to make the B-grid code
337      "more symmetric". This change is likely to remove all "ridges/leads" that
338      where quasi-aligned with the grid in B-grid solutions. It may also be
339      the solution to the stress coupling issues with the B-grid.
340    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
341      remove .cvsignore from input dir. (since testreport no longer run here).
342    o pkg/thsice:
343     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
344     - fix reshaping of sea-ice just after advection:
345       melt all the ice only if ice-volume is too small.
346     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
347       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
348     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
349    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
350      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
351    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
352      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
353      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
354      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
355      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
356      -> update output.txt
357    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
358     this affects truncation error: -> update output.txt of exp:
359      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
360      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
361    
362    checkpoint59f
363    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
364    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
365      a bounded range (in forward mode)
366    o pkg/ecco, ctrl, autodiff and mom_common:
367     internal parameter controls, completements of implementations
368    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
369    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
370      (not seem any difference in testing results).
371    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
372       at face corners.
373    o pkg/generic_advdiff:
374     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
375      loop range indices for computing vertical advection tendency
376      and do the calculation in the interior only (no overlap) ;
377      for now, only implemented for SOM advection (to save CPU time).
378     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
379    o exch2 adjoint
380      First set of changes:
381      - add exch2 hand-written adjoint templates
382      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
383        This will require cleanup in pkg/autodiff/*.F
384        (changed routines currently kept separate in verif. code/)
385      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
386        that used to hide exch2 or cubed-sphere specific code
387        (commented via 'cph-exch2')
388    o pkg/seaice
389      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
390    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
391       output of global_ocean.cs32x15.thsice .
392    
393    checkpoint59e
394    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
395      for B-grid vector (not yet tested) and C-grid vector (<- only used
396      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
397    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
398      (#ifdef ALLOW_SALT_PLUME)
399    o gather_2d/scatter_2d: removed halo regions
400    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
401      scheme and the corresponding test case (under front_relax dir). For now,
402      only available with Skew-flux form and not yet tested in realistic set-up.
403      adjoint: store directives updated, but gradient checks deteriorated,
404      so maybe GM/Redi adjoint is now broken.
405    o seaice adjoint
406      * add AREA, HEFF, HSNOW as control variable
407        (should not change lab_sea results)
408      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
409    o pkg/seaice:
410      * added computation of saltFlux in seaice_growth;
411        For time being, sea ice salinity is assumed constant
412        contribution of snow flooding to freshening of sea ice is neglected.
413        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
414        defaults to 0.0 in order to maintain backward compatibility.
415        Typical values for SEAICE_salinity are 4 to 10 g/kg.
416      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
417      * added SEAICE_availHeatFrac, which specifies fraction of surface level
418        heat content used to melt or grow ice
419      * commented out cap of HICE: it helps keep ice thinner
420      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
421      * applied OBCS T/S mask to HEFFM sea ice mask
422    
423    checkpoint59d
424    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
425     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
426     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
427    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
428     and change default value of parameter "GM_Small_Number";
429     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
430       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
431       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
432    o pkg/ecco: cost function when applying pkg/smooth to controls
433    o pkg/ctrl: add forcingPrecond run time parameter
434    o pkg/seaice:
435     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
436     - fix bug in metric terms of u-equation in LSR solver (implicit part),
437       changes verification/lab_sea
438     - rearrange implicit part of u-equation in LSR solver to make it easier to
439       read, understand, and debug. This causes changes at the truncation level.
440     - fix (serious) bug in the boundary conditions (sign error in the implicit
441       part) of the LSR solver. Changes all LSR results.
442     - fixed problem with HSNOW initialization to avoid thick snow when AREA
443       is initilized with small values - does not change lab_sea results.
444     - added HsnowFile initialization capability
445    o pkg/smooth: addition to model/src and pkg/ctrl so allow
446     initialization of pkg/smooth and application to control vector
447    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
448    o dependencies: pkg/profiles requires pkg/cal
449    o pkg/profiles:
450     - added option ALLOW_PROFILES_GENERICGRID
451         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
452         that interpolation information (grid points and coefficients) is provided
453         within the netcdf input files.
454         -> sample matlab scripts can be found in MITgcm_contrib/gael
455         that allow you to prepare netcdf input files.
456     - also modified: cleaner include statements, cleaner error print statements,
457       cleaner stops when error, and more tests of the netcdf input files consistency.
458    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
459    o pkg/seaice:
460     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
461       requires a new routine: seaice_diagnostics_fill.F
462     - make sure that seaice does not move if not forced (pressure replacement
463       method, Hibler and Ip, 1995), changes results
464     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
465     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
466       It is turned off by default (=-1.), because it changes the results.
467     - make it possible to read AREA from a file, too.
468    
469    checkpoint59c
470    o add S/R and diagnostics for oceanic mixed-layer depth
471    o move GMRedi call after all vertical mixing schemes (including KPP)
472    o pkg/thsice:
473     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
474      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
475    o pkg/obcs:
476     - bug fix for balance code
477    o pkg/seaice:
478      - allow values of SEAICE_elasticParm > 1
479      - add new parameter SEAICE_evpTauRelax as an alternative
480        to SEAICE_elasticParm
481      - make lsr boundary conditions free slip (by default), changes result
482      - add code for no slip boundary conditions for lsr
483      - set minimum of zeta to zero (and not 4e8) (changes results)
484      - add a cap on AREA after advecting AREA if seaice_growth is not called
485    o change calculation of Visbeck K:
486      - no longer depend on tapering scheme; instead, compute slope (limited
487        by GM_maxSlope). this is equivalent to what was comuted before with
488        clipping or linear tappering.
489      - fix vertical averaging (wrong by 1/2 level)
490      - leave the old version (but will not be maintained) within
491        #ifdef OLD_VISBECK_CALC / #endif
492      - update output of exp. ideal_2D_oce
493    o change error catch in calc_r_star to improve vectorization
494    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
495      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
496    o adjoint:
497      Re-organized adjoint checkpointing according to Matt Mazloff
498      (but with modifs/completions/cleanups)
499      Storing is now bundled into large arrays to optimized I/O
500      (and second step in cleanup of the_main_loop)
501    
502    checkpoint59b
503    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
504      - export/import (between ocean & coupler) fields needed for ocean DIC.
505    o pkg/seaice:
506      - get rid of three more exchanges seaice_calc_viscosities (required
507        different loop boundaries in seaice_lsr and seaice_ocean_stress)
508      - bug fix in seaice_ocean_stress (update of lab_sea required)
509      - reduce loop boundaries to necessary minimum also in seaice_evp
510      - go back to the old way of computing deltaC/Z as the adjoint likes that
511        better
512    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
513      passive tracer to an Age Tracer) + update output.txt
514    o pkg/exf:
515      - implement A-grid / C-grid selection for wind-stress input files.
516      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
517      for now, in exf_bulk_largeyeager04.F only :
518      - change implementation for case where windspeed + 2. components wind-stress
519        are read-in. AND use rhoConstFresh to convert evap.
520    o pkg/seaice:
521      - use correct EXCH_UV for wind-forcing (on A-grid).
522      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
523        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
524    o pkg/exf:
525      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
526      EXF_INTERPOLATION:
527      - merge global_with_exf/code version of exf_interp_read.F
528        to the main code ;
529      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
530        reading the file ; Important: This options needs to be defined to recover
531        previous code.
532        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
533      - no longer loose real*8 precision along the way when using exf_iprec=64.
534    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
535      - change discretisation of evp-solver in order to avoid another exchange
536        (changes lab_sea) and clean up a little
537      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
538        help the adjoint (this also changes the results slightly)
539      - add a few "_d 0" where they had been missing in seaice_evp.F
540      - cleaning up: remove unused seaice_calc_rhs.F
541    o pkg/exf: some cleaning-up:
542      - change various "constants" into runtime parameters
543      - cleaned-up Large&Yeager04 routine which should eventually
544        replace exf_bulkformulae.F (changed names of S/R and CPP)
545        and merged various ALLOW_ATM_WIND options
546     only used with thsice pkg (in thsice_get_exf.F):
547      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
548        which are used when useStabilityFct_overIce=TRUE (= the default)
549      - change default values of ice & snow emissivity and scale downward LW
550        by ice & snow emissivity.
551    o pkg/thsice:
552     fix few little problems, in thsice_calc_thickn.F:
553      - growth vertically (and not laterally) if iceFrac == iceMaskMax
554      - melt only laterally if hIce < hThinIce (as the comments say)
555      and in thsice_extend.F:
556      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
557      - start to form ice as soon as the minimum ice-volume is reachable.
558     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
559      and cpl_aim+ocn
560    o pkg/kpp
561     - move computation of surface related input fields to KPP into a new
562       subroutine kpp_forcing_surf.F
563     - remove wrong (within bi,bj loops) EXCH calls.
564     - little cleaning (add argument myThid in last position, cvs header ...)
565     - for now, fix conservation problem by exchanging KPPviscAz (may not
566       be the best fix)
567    o pkg/seaice
568     - check for inconsistent evp parameter/cpp-flag combination
569     - remove leftover errIO flat for obsolete name list error handling
570    o OpenAD
571     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
572    
573    checkpoint59a
574    o pkg/seaice: some parameter clarifications and a little bit of clean up
575    o pkg/thsice: rename run-time parameters:
576       himin       -> hIceMin
577       himin0      -> hThinIce
578       hihig       -> hThickIce
579       i0          -> i0swFrac
580       transCoef   -> bMeltCoef
581       frac_energy -> fracMelting
582      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
583       with default values (for now) that do not change the results.
584      remove old version of thsice vars advection in pkg/seaice.
585    o in FFIELDS.h:
586      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
587      - make pLoad & sIceLoad always available (but still only used if
588         ATMOSPHERIC_LOADING is #define).
589    o pkg/kpp: replaced _KPP_RL with _RL
590    o bug fixes for vertical diffusivity computations when both KPP and
591        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
592        are no longer updating the vertical diffusivity array
593        (passed as argument) but are (re-) setting those arrays.
594    o pkg/seaice: fix bug in evp solver, while doing that
595      - change (improve?) discretization of stress computations for both
596        cgrid-lsr and evp solver
597      - add a new routine to compute strain rates
598      - the above changes lab_sea results
599      - add no slip conditions for evp solver (off by default), lsr-version
600        may follow
601      - fix exchange for shear at Z-points (does not change lab_sea)
602      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
603        (to force the user to pick a time step since there is not "safe" way
604        of choosing it)
605      - add principal stress diagnostics
606      - rearrange fields for evp a little to avoid having to call a: too many
607        exchanges and b: exchanges for stress trensor components which we do
608        not have.
609      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
610        of evp, complete rewrite for lsr case (latter is does not yet work
611        in all cases)
612    o pkg/kpp: add code to have mixing in shelf ice caverns
613      - add myThid to all kpp routines (long overdue)
614    
615    checkpoint59
616    o pkg/exf:
617      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
618        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
619      - move exf header files from lower_case.h to UPPER_CASE.h ;
620        add missing cvs Header & Name
621      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
622      - add namelist param. selectStressGridPosition, exf_monFreq
623      - retire many _CLIM routines, and remove data.exf_clim
624        + params moved to data.exf
625        + climsst, climsss now handled by exf_set_gen, i.e.
626          climss?period=0 refers to constant field,
627          climss?period=-12 to monthly forcing
628      - split up namelists in data.exf
629    o pkg/seaice:
630      - remove seaice_exch and seaice_exch_uv
631      - remove superfluous exchange of theta
632      - add myThid to seaice_budget_ocean/ice
633      - add new interface for atmospheric wind forcing (C-grid only)
634        + new routine
635        + two new field (taux, tauy for stress over ice)
636        + removed one global field (DAIRN) for C-grid case only
637    o pkg/thsise
638      - 2nd set of modifs for thsice adjoint in conjunction with exf
639    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
640    
641    checkpoint58y_post
642    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
643      vertical diffusivity, similar to that in MOM4; turned on using
644      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
645      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
646    o Added capability for 3D specification of background vertical diffusion
647      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
648      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
649      "data" file that contains the 3D vertical diffusivity coefficients.
650    o ice dynamics (pkg/seaice) with thsice thermodynamics:
651      - add code within pkg thsice to advect & diffuse sea-ice fields
652      similar to (and will replace) what has been added in  seaice_advdiff.F,
653      but: - conserving Mass, Heat & Salt.
654           - better when using non-linear advection scheme (not yet fully tested)
655           - can also be used in atmospheric set-up (for now, only the diffusion).
656    
657    checkpoint58x_post
658    o IO option for global-file compact format:
659      - add options when generating topology (utils/exch2/matlab-topology-generator)
660      - add I/O capability (pkg/mdsio).
661      - adapt utils/matlab/rdmds.m to read this format.
662      for now long-line format not yet supported by pkg/mdsio (& exch2).
663    o shelfice: add a few diagnostics
664    
665    checkpoint58w_post
666    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
667      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
668      (and replace horiVertRatio in NH code).
669      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
670                         and tutorial_plume_on_slope (sensitive to truncation)
671    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
672      directly to drive seaice model (C-grid only)
673    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
674     - reintroduce computation of wind from stress,
675     - compute tau (in exf_bulkformulae.F) from windstress averaged to
676       mass points to avoid tau = 0
677     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
678    o rdmnc.m: make it work with "global" files created with gluemnc
679    o rdmnc.m : some improvements in dealing with singleton dimension
680      (tested on all testreport mnc output files).
681    o genmake2: disable pkg/profiles if netcdf test fails.
682    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
683    o move call to cal_readparms up to make calendar parameters/variable available
684      to all packages
685    
686    checkpoint58v_post
687    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
688      useDynP_inEos_Zc tested.
689    o pkg/exf: changes to properly interpolate/mask/scale initial fields
690    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
691      and portions thereof.  See read_cs.txt for description and examples.
692    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
693      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
694      following the great-circle arc between those 2 points.
695    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
696      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
697    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
698     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
699     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
700     - still needs work (not working with some options ; efficiency to improve)
701       and serious testing.
702     - use this scheme for temperature & salinity in 2 advection test exp.:
703       advect_xy & advect_xz, respectively.
704    
705    checkpoint58u_post
706    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
707    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
708    o testreport: add option "-skipdir" to skip some test.
709    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
710      momentum calculation.
711    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
712    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
713      remove checkpoint.F and the_correction_step.F (no longer used);
714      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
715    o add option (linFSConserveTr) to correct for tracer source/sink due to
716      Linear Free surface
717    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
718    o pkg/thsice: fix reading mnc-pickups
719    
720    checkpoint58t_post
721    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
722    o pkg/mdsio:
723     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
724       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
725       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
726     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
727     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
728       either MDS_READ_FIELD or MDS_WRITE_FIELD )
729     - new S/R (to replace MDSWRITEMETA), which allows to write more
730       informations (variable names, time ...) to meta files.
731     - modify rdmds.m to give back the meta file content.
732    o pkg/diagnostics: change vertical interpolation to be safer, and more
733       flexible (define p-levels to interpolate to in data.diagnostics);
734      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
735       diagnostic pointer.
736    o pkg/seaice: more cleaning up of seaice_growth, added many comments
737    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
738    o fix multi-category seaice:
739     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
740       SEAICE_MULTICATEGORY
741     - fix short wave heat flux
742    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
743       and allow to use EVP solver. Change forward lab_sea: test both EVP
744       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
745    o Initial check-in of lab_sea adjoint
746      (very similar to natl_box_adjoint/code_seaice)
747      * used C-grid and EVP solver
748      * used KPP, GM/Redi
749      * uses inAdExact=.TRUE.
750      * gradient checks fail for both ADM and TLM
751        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
752        f.d. gradients actually seem more problematic than ADM, TLM gradients;
753        issue is related to forward mismatch between g77 an ifort
754    o pkg/seaice: overhaul of thermodynamics
755     - growth.F and groatb.F are replaced by new routine seaice_growth.F
756     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
757     - move a few global fields out of SEAICE.h into seaice_growth.F and
758       make them 2D (FICE/QNETO/ ...)
759     - remove FO (it is the same as QNETO)
760     - introduce a few local fields to avoid modifying external fields such
761       as atemp, etc.
762    
763    checkpoint58s_post
764    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
765      changed exf_set_gen.F so that
766        genperiod=0 means input file is one time-constant field and
767        genperiod=-12 means input file contains 12 monthly means
768    o CG2D: use pre-computed solver main-diagonal (stored in common block);
769      this affects truncation error ; generate new output file for exp. which
770      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
771        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
772        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
773        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
774        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
775        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
776    o start implementation of deep-atmosphere and anelastic formulation
777    o verification: remove 2nd copy of input files and use script "prepare_run"
778      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
779    o mom_common/vecinv/fluxform: fix a few initialisation isssues
780    o profiles: fix for multithreaded case
781    
782    o diagnostics: rename few diags:
783      s/'PRESSURE'/'RCENTER '/g
784      s/'TICE    '/'oceFreez'/g
785      s/'TAUX    '/'oceTAUX '/g
786      s/'TAUY    '/'oceTAUY '/g
787      s/'SWFLUX  '/'oceQsw  '/g
788      s/DIFx/DFxE/g
789      s/DIFy/DFyE/g
790      and add few ocean-forcing diagnostics:
791      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
792    o modifications to pkg/seaice/growth.F and budget.F, which change results of
793      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
794      as actual snow thickness.  It now refers everywhere to effective snow
795      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
796    
797    checkpoint58r_post
798    o modifications to pkg/seaice/growth.F, which change results of
799      lab_sea experiment: fixes pertain to melting snow over open water, to
800      masking EVAP under sea ice, and to using the correct AREA variable for
801      computations of EVAP, PRECIP, HSNOW, and GHEFF
802    o add ability to read bathy, salt, and theta using MNC (off by def)
803    o add flooding algorithm and advection of HSNOW for pkg/seaice;
804      both are turned off by default and do no change any results
805    o seaice advection with pkg/thsice: a step toward the use of non-linear
806      advection scheme, but #ifdef or commented out for now (requires more EXCH).
807    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
808      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
809      in natl_box (affects results @ truncation level: update output.txt)
810    o multi-threading and IO:
811      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
812      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
813        (needed to work with SingleCpuIO): tested in all verif. exp.
814    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
815      affects the results (but none of the verification test uses this scheme).
816    o Adding some pkg/diagnostics capability to pkg/seaice
817      (will certainly be subject to changes)
818    o ctrl: adding new control variables:
819      lwflux, lwdown, evap, snowprecip, apressure, runoff
820    
821    checkpoint58q_post
822    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
823      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
824      high_res_cube configuration by 4% on Columbia.
825    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
826      add (in global_with_exf/code) a version of EXF_INTERP_READ without
827      dynamical allocation (seems to work in multi-threaded).
828    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
829      single CPU io) so that TAF does not have to see EESUPPORT.h
830    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
831    
832    checkpoint58p_post
833    o obcs: stop if obcs is used with useCDscheme = .true.
834    o shelfice:
835     - fix a sign error so that no slip at shelfice interface works
836     - remove stop for combination non-hydrostatic code and shelfice. That does
837       not mean, that the results are correct, but at least they are numerically
838       stable
839    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
840    o added adjoint exch routined for all exch*3d* routines
841      and updated flow directives
842    
843    checkpoint58o_post
844    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
845      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
846    o change controling S/R for writing pickup file (new S/R do_write_pickup)
847      and clean-up reading/writing of pickup files.
848    o fix local version of read/write pickup (NH part) in rotating_tank/code
849    o simplify EXCH interface:
850     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
851     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
852    o added the regrid package
853    o shelfice:
854     - add a simple boundary layer scheme to reduce noise
855     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
856    
857    checkpoint58n_post
858    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
859       local variable (not in common block).
860    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
861      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
862      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
863        to work with SingleCpuIO.
864    o add "_d 0" to real constant of pkg/cfc subroutines ;
865       update exp. cfc_exemple & tutorial_cfc_offline output files.
866    o multi-threading and IO:
867      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
868        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
869      - barrier before and after reading.
870      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
871      - avoid using MDS_WRITELOCAL for LAND pkg output.
872      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
873        common-block variables ; Allows multi-threading with master-thread IO.
874    o change default MAX_NO_THREADS from 32 to 4 ;
875      and stop cleanly when MAX_NO_THREADS is too small.
876    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
877    
878    checkpoint58m_post
879    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
880       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
881    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
882       keep global_ocean.90x40x15 (for AD testing) with former secondary test
883       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
884    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
885        add MITgcm_tutorials (= code + all the tutorials)
886    o ecco, option to compute cost for total ssh (mean+anom)
887    o consistent with addition of ptracer and ssh in pkg/profiles
888    o profiles: adding ptracer and ssh
889    o testreport: change multi-test output-file name
890      (from output.txt.{name} to output.{name}.txt)
891    o profiles: now ok for mutli-tiles case
892    o seaice: add 4 parameters for different advection schemes for area,
893      (effective) seaice thickness, enthalphy, and snow height. Their default
894      is the standard parameter SEAICEadvScheme
895    o calc_gw:
896     - add cosFacU in zonal viscous flux (harmonic.visc.).
897     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
898       of tutorial_plume_on_slope.
899    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
900    o calc_gw: true flux-form, account for horizontal grid spacing.
901      update rotating_tank results, but not plume_on_slope (affected at
902      truncation level, 11 digits).
903    
904    checkpoint58l_post
905    o calc_gw:
906     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
907     - remove side-drag for now (need to fix it); update plume_on_slope results.
908     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
909    o commit code to make SST/SSS weights spatially variable
910      (based on either variable in-situ or variable initial T/S weights)
911    o pkg/ecco:
912      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
913        now based on horizontally varying weights wthetaLev, wsaltLev
914      * cost_averagesflags now returns year indices in addition to day, month
915      * sflux balance is performed on annual basis
916        (sflxumm, sfluxmm2, bal_sfluxmm)
917      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
918        including separate counting and multipliers
919    o pkg/rbcs
920      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
921    
922    checkpoint58k_post
923    o testreport:
924     - always build in dir. "build" (if not there, mkdir build instead of building
925       & running in input)
926     - run in dir run (if it exists), in build otherwise.
927     - call prepare_run (if input/prepare_run exists)
928     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
929    o pkg/exf modifications to interpolation and rotation routines for more
930       reasonable treatment of North Pole singularity: for tracers North Pole
931       value is set to northernmost zonal-mean value, for zonal velocity it is
932       set to zero, and for meridional velocity it is set to northernmost value.
933    o pkg/exf/exf_check_range.F
934     - add tile index to diagnostics and move stop statement to the very
935       end of the routine.
936    o pkg/diagnostics: (diagnostics_main_init.F)
937      define title of isomorphic variables according to the current config.
938    o pkg/thsice with pkg/seaice dynamics:
939    - fix domain of computation (interior only, required for exf) and do exchanges
940    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
941    o towards a standard way of dealing with multi-threading in MONITOR
942      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
943    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
944       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
945    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
946    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
947    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
948       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
949    o tracer advection:
950     - clean-up and simplify calc_common_factors.F
951     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
952       advection subroutine (but still not used within DST advection S/R)
953    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
954    
955    checkpoint58j_post
956    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
957      from file (collects calls previously in FORWARD_STEP)
958    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
959    o adjoint store dir. adjusted accordingly
960    o genmake2
961      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
962    
963    checkpoint58i_post
964    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
965      on wind stress (SEAICEstressFactor defaults to 1.)
966    o Total number of Timers is finite (<=40): comment out 2 non-essential one
967      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
968    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
969      on CS-grid: no longer loosing mass.
970    o exf & curvilinear-grid: no longer modify longitude xC & xG.
971    o pkg/ggl90: fix sloppy output and fix a bug
972    o pkg/seaice: added SEAICEuseEVPpickup parameter
973      - Set to false in order to start EVP solver with
974        non-EVP pickup files when using SEAICEuseEVP
975      - fix sign error in diffusion in seaice_calc_rhs
976    
977    checkpoint58h_post
978    * Modifications for bottom topography control
979      o replace hFacC by _hFacC at various places
980      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
981      o add non-self-adjoint cg2d_nsa
982      o update autodiff support routines
983      o re-initialise hfac after ctrl_depth_ini
984      o works for 5x5 box, doesnt work for global_ocean.90x40x15
985    * Adding verification for 5x5 box (4-layer) bottom topography control
986    
987    checkpoint58g_post
988    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
989       used for mean seasonal cycle, mean diurnal cycle); add an example
990       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
991    o pkg/ggl90:
992      - add parameter (minimum surface kinetic energy)
993      - fix bug (avoiding division by zero)
994    o couple pkg/thsice to pkg/seaice:
995      - modify advection in seaice to accomodate new scalar fields to be advected
996      - only muliDimAdection scheme work with seaice/thsice
997      - mapping of thsice-variables to seaice-variables, back and forth
998      - does not break the verification experiments, but does not give the
999        desired results either
1000    o pkg/seaice
1001      - make (default) second order advection a bit less confusing?
1002    
1003    checkpoint58f_post
1004    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1005      to pkg/seaice):
1006      - new routines thsice_map_exf and thsice_get_exf provide the interface
1007      - add an additional formal parameter to thsice_solve4temp
1008    o pkg/exf:
1009      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1010      - correct Stefan-Boltzmann constant
1011      - new parameter for longwave surface emittance
1012      - separate some stuff from exf_bulkformulae into new routines  
1013        exf_radiation, exf_wind
1014      - add new parameters and constants: longwave emissivity for ocean, ice
1015        and snow, evaporation parameters over ice
1016      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1017        either wind from stress or stress from wind
1018    o pkg/thSIce:
1019    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1020    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1021       and THSICE_CALC_THICKN
1022    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1023    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1024      to make debugging easier.
1025    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1026    o pkg/bulk_force:
1027      - clean-up comments and parameters ;
1028      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1029    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1030      generate new output for test-experiment: aim.5l_cs.thSI
1031    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1032      testreport accordingly
1033    
1034    checkpoint58e_post
1035    o SEAICE_CGRID adjoint done
1036    o R_STAR adjoint implemented.
1037      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1038      * need to sort out init. of h0facc, etc.
1039    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1040      to be able to use it in pure forward.
1041    
1042    checkpoint58d_post
1043    o upgrade simple test-experiment to tutorial example:
1044     step.1: duplicate the experiment and (step.2) will remove the old copy.
1045      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1046      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1047      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1048      tutorial_global_oce_biogeo    <- copy of dic_example
1049      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1050      tutorial_plume_on_slope       <- copy of plume_on_slope
1051      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1052      tutorial_global_oce_optim     <- empty for now (David ?)
1053      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1054     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1055    o correct a sign problem in cost_scat.F
1056    o obcs and ptracers: fix boundary conditions for advections schemes
1057      with larger stencil
1058    o thsice adjoint: start
1059    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1060      completeness
1061    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1062      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1063    o ptracers adjoint:
1064      * avoid extensive recomputatations
1065      * fix missing re-init. of gptr (missed by TAF)
1066    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1067      me to turn off the excessive output to STDOUT that this package produces
1068    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1069      and add those terms in Vector-Invariant formulation.
1070    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1071      if the control period (xx_hfluxperiod etc) is 0
1072    o in profiles pkg, clean routines and fix details
1073    o in ecco pkg, reading ssh data:
1074      fix problem in case the model does not start at iter0=0
1075    o fix mnc-pickup/restart for ptracers
1076    o new package prifiles:
1077      code to compute profile-based cost by Gael Forget
1078      (modifs in ecco, ctrl, autodiff)
1079    o Benign bug fix in initialization (spotted by M. Mazloff) of
1080      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1081    
1082    checkpoint58c_post
1083    o adjoint: finish NLFS adjoint and provide reference output in
1084      verification/global_ocean.90x40x15/results_ad_nlfs
1085    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1086      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1087      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1088      with SEAICE_CGRID defined.
1089    o move calendarDumps from "data" to "data.cal" and clean-up the code
1090      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1091    o add useEXF & useCAL flags (for now, set in hard-coded way)
1092    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1093      (were missing in NH mode, and wrong in quasihydrostatic mode).
1094      waiting for Chris updated version of calc_gw to add those CALLs.
1095    o fix bug in quasihydrostatic S/R ;
1096      add a test for this option: global_ocean.90x40x15.qshyd
1097    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1098      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1099    o add on/off flag useOffLine for package OFFLINE
1100    o seaice:
1101      - modify advection so that it works also on the C-grid
1102      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1103        problem in multi-tile runs with C-grid
1104      - add flags for clipping ice velocities and/or masking solver forcing
1105      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1106        C-grid solver
1107      - added a few comments to seaice_diffusion.F
1108      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1109        are now exclusive)
1110      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1111        required re-ordering the code a little:
1112       + make DAIRN global variable (defined in SEAICE)
1113       + move computation of the viscosities eta and zeta into a new separate
1114         routine (because I need to recompute them in seaice_ocean_stress.F)
1115    
1116    checkpoint58b_post
1117    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1118      update output.txt of exp. aim.5l_cs.thSI
1119    o various mnc cleanups and improvements:
1120      + shrink lookup tables by factor of ~4
1121      + better error reporting when running out of lookup space
1122      + able to handle longer path/file names (up to 500 chars)
1123    o adjoint:
1124      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1125      - TBD: "hidden" mom_vecinv recomp. in dynamics
1126    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1127     (allow to differentiate between forcing components using new integer flags:
1128      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1129     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1130    o ecco
1131      - enable trend removal from SSH anomaly obs.
1132    o adjoint
1133      - a fix for PmEpR when #undef EXACT_CONSERV
1134      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1135      - try to fix "hidden" recomp. in forward_step for NLFS
1136        (NLFS seems broken sometimes after I checked it in)
1137    o seaice:
1138     - add c-grid version of the dynamic solver:
1139       + three new routines that are the c-grid substitute lsr, dynsolver
1140         and ostres
1141       + put a few fields that were local to dynsolver into global common
1142         blocks, so that I can move the computation of stresses etc into
1143         seaice_lsr (saves coding but may break the adjoint).
1144     - replace more hardwired parameters by runtime parameters
1145     - add ice masks that mask the rhs of the implicit solvers where there
1146       is no ice (commented out in seaice_dynsolver, because i am not sure
1147       if this works properly), eventually this should replace the clipping
1148       of ice velocities in seaice_dynsolver to +/-40cm/s.
1149    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1150      include it only where its needed
1151    o move balancing of fluxes before the call of external_forcing_surf
1152    o seaice:
1153      - correct units of turning angles (now they are really in degrees)
1154      - move computation of GWATX/Y out of main routine into dynsolver
1155      - initialize GWATX/Y in seaice_init
1156    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1157      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1158    o seaice: add runtime flags for turning angles (default to zero)
1159    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1160      and trend from exf forcing and ctrl control adjustments
1161    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1162      (since checkpoint57x_post)
1163    o change the default rotation period to 86164.s = the Earth rotation
1164    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1165      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1166    o seaice advection: add code for choosing between the default (2nd order
1167      central differences) and multiDim advection schemes provided by
1168      pkg/generic_advdiff
1169    o seaice:
1170      - removed all references to SEAICE_GRID.h fields from
1171        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1172        (cubed-sphere configuration will change a little)
1173      - grid computations in seaice_init are obsolete now.
1174      - cleaned up code a little so that is easier to read (hopefully).
1175      - added new (better?) discretizations of default advection and diffusion
1176        (turn on with SEAICEuseFluxForm)
1177      - replace 1 in 3d global fields by kSurface in growth.F
1178      
1179    checkpoint58a_post
1180    o seaice:
1181      - bug fix in advect.F
1182    o shelfice:
1183      - separate shelfice load anomaly from pload (breaks with time
1184        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1185        Its default is 0., but it may be computed more cleverly from (unknown)
1186        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1187        done offline. A good approximation of the pressure load anomaly is
1188        necessary to avoid large initial adjustment processes underneath
1189        deep-reaching shelfice.
1190      - small fix in ISOMIP shelfice_thermodynamics
1191      - add more sophisticated thermodynamics of Hellmer (1989), this is
1192        now the default
1193      - give a few constants more intuitive names
1194    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1195      if bulk formulae are used in long integration (especially EmPmR). Turn
1196      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1197      if balancePrintMean, the imbalance that is substracted is printed to
1198      STDOUT.
1199    o fix bug (typo) in obcs_apply_eta.F
1200    o add a new package shelfice which enables us to model the circulation
1201      underneath shelf-ice with draughts of hundreds of meters.
1202     - works
1203     - to do: + include improved thermodynamics
1204              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1205                instead of new field kTopC
1206              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1207                instead of new field R_shelfIce and new code in ini_depth.F
1208                and ini_mask_etc.F?
1209              + adjust vertical mixing schemes?
1210    o seaice pkg:
1211     - add a cpp-flag to include a simple formula for a salinity dependent
1212       freezing point of sea water at the surface
1213     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1214       meridional stresses are now different (and hopefully correct)
1215    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1216       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1217       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1218    o pkg/diagnostics: add options and parameters for regional-statistics
1219       diagnostics ; define regions by reading a region-mask from a file
1220       (might add other options later)
1221    o pkg/bulk_force:
1222     - add option and parameters to use AIM surface-flux formulae.
1223     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1224       others forcing fields (defined in PARM05, parameter file "data") are loaded
1225       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1226     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1227     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1228     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1229       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1230     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1231    
1232    checkpoint58
1233    o add "--embed-source" option to genmake2 which, when the supporting
1234      tools can be compiled (as determined by genmake2) will turn on the
1235      embed_files package which then embeds the entire MITgcm source code
1236      (*.[fFhc] + Makefile) used for the build within the executable
1237      - requested by CNH but off by default
1238      - adds a paltry <9MB to the mitgcmuv executable in most cases
1239      - only writes the output when useEMBEDSRC in eedata is true
1240    o clean up 3-dim. relaxation codes:
1241      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1242      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1243      * Thanks to Tom Haine for testing!
1244    
1245    checkpoint57z_post
1246    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1247      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1248    o fix the pickup behavior for obcs in combination with ptracers
1249    o fix a bug in ptracers_external_fields_load
1250    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1251      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1252    o transfered surface NH pressure to eta field (if exactConserv).
1253    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1254         and update lab_sea output.txt file.
1255    o completing 3-dim. relaxation code: additional term
1256         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1257      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1258      * At compile time, in "EXF_OPTIONS.h" set
1259          #define  ALLOW_CLIMTEMP_RELAXATION
1260          #define  ALLOW_CLIMSALT_RELAXATION
1261      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1262          tauThetaClimRelax3Dim = 15552000.0,
1263          tauSaltClimRelax3Dim  = 15552000.0,
1264      * 3 cases:
1265          1) Use a constant-in-time 3-dim. field
1266          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1267          3) Real-time relax. to time-evolving prescribed field
1268    o Adding Laplacian-type smoothness constraint on
1269      initial and boundary (forcing) controls (ic, bc)
1270      * enable at compile-time via
1271        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1272      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1273      * Absolute scale somewhat unclear so far
1274      * no area weighting was included since no other cost term does so far
1275    
1276    checkpoint57y_post
1277    First step for a NLFS adjoint
1278    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1279    o new init. routines for calc_r_star, calc_surf_dr
1280    o still need to deal with ini_masks_etc
1281    o testreport seemed happy
1282    checkpoint57y_pre
1283    
1284    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1285    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1286    o add new offset feature to offline pkg (plus minor cleanup)
1287    o cfc fixes for final year of integration
1288    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1289      be in GCHEM_OPTIONS).
1290    
1291    checkpoint57x_post
1292    o fix testreport Pb in multiple test experiment.
1293    o cleanup our namelist syntax in verification:
1294      - make it more F95 standards compliant (some work still needed)
1295      - allows the vast majority of our tests to work with gfortran
1296    o Non-Hydrostatic:
1297     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1298     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1299    o Allow to apply AB on T,S rather than on AB(gT,gS):
1300     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1301     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1302       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1303     - need a "clever" read_pickup to restart from the other AB formulation
1304    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1305    o remove some unused variables (reduces number of compiler warnings)
1306    o adjoint
1307      * Disable useVariableViscosity for adjoint for time being
1308        (there are a number of extensive recomputations)
1309      * Initialize certain variables needed for adjoint
1310    
1311    checkpoint57w_post
1312    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1313                 fix the singleCpuIO RS version of MDSWRITEFIELD
1314       and add a WARNING if using globalFiles=T with multi-processors.
1315    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1316      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1317    o tracer advection scheme:
1318      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1319       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1320       was not very convenient).
1321      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1322       (further tests needed for the implicit DST & Flux-Limiter schemes).
1323    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1324      and sRef for convenience, handy, when you want to initialize
1325      ptracers in a large domain with a constant non-zero value. Also,
1326      untangle ptracers_init.F a little.
1327    
1328    checkpoint57v_post
1329    o change dome exp. to use variable viscosity in side-drag terms.
1330    o remove all the files from the cfc_offline test since they are now
1331      incorporated into tutorial_cfc_offline which has been producing
1332      identical results for a few days of testing
1333    o add new parameter: sideDragFactor to enable half-slip-side BC
1334      and change side-drag S/R to use viscosity from mom_calc_visc
1335      (can switch back by setting sideDragFactor=0.); affects results at
1336      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1337       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1338    o vorticity & strain are now computed without masking, to account for
1339      no-slip-side BC in variable viscosity calculation ; mask is applied
1340      anyway later on, before computing advection/coriolis terms.
1341    o modify exp4 to test new obcs support for reading from external files
1342      and for passive tracers
1343    o fix behavior of ptracers_monitor when monitor output is written to a
1344      netcdf-file; still not independent of monitor.F (writes in the same
1345      file).
1346    o change default value of tRef (put a uniform, meaningful value for ocean
1347      & atmos) and initialize sRef (was missing, as Martin mentioned).
1348    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1349      to be proportional to enstrophy dissipation length.  Thus,
1350       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1351      This is now consistent with Smagorinsky and with the manual.
1352    
1353    checkpoint57u_post
1354    o OBCS and PTRACERS: add open boundary support for passive tracers
1355      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1356        OB-values from file; this is not different from the way theta and salinity
1357        are treated
1358      - however, Orlanski-radiation conditions are not supported, and the model
1359        will stop if you use pTracers and Orlanski at the same time.
1360      - beefed up the rountine obcs_external_fields_load: now only those open
1361        boundary values are overwritten with values from files for which there
1362        are really files, otherwise the OB-fields remain untouched. This makes
1363        it possible to use different OBs at different ends of the domain (as
1364        with EXF)
1365    o reduce number of exch calls in shap_filt (s2).
1366    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1367      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1368    
1369    checkpoint57t_post
1370    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1371    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1372      same truncation, independent of the face number: affects affects several
1373      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1374    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1375      note that biharmonic viscosity + no-slip was not tested in any experiment.
1376    o fix bug in non-linear free-surf side-drag ; generate new output for
1377      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1378    o make mnc honor the writeBinaryPrec flag for most kinds of output
1379    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1380    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1381      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1382    o add brackets in multi-terms sum to get same truncation, independent of
1383      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1384      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1385    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1386      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1387      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1388      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1389      Suggested values of viscosity parameters found in mom_calc_visc.
1390      Many new viscosity diagnostics available.
1391    
1392    checkpoint57s_post
1393    o Add clearing-house for viscosity calculations, mom_calc_visc and
1394      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1395      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1396      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1397      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1398      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1399      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1400      ViscAhStrain and viscAhTension are now retired.
1401    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1402    o In response to JMC's bug report, genmake2 now ignores any soft-links
1403      that it finds in the *current* directory when searching for files.
1404      Soft-links found in any other source directories will still work as
1405      they did before.
1406    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1407      a C routine to unlimit the stack size
1408    o mnc-ify pkg/aim snapshot vars
1409    o mnc-ify pkg/land as requested by Daniel
1410    o various changes to mnc including:
1411      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1412      - output can now be grouped so that all files within a group
1413          change the ITER portion of their names in lock-step together
1414      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1415          and works with both EXCH1 and EXCH2 (but needs more testing)
1416      - writing works for all verification test cases w/ g77 on Linux
1417    
1418    checkpoint57r_post
1419    o make MNC variable initialization happen earlier
1420    o add diagnostics for (almost) each term of the momentum Eq.
1421    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1422    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1423    o remove MINIMAL_TAVE_OUTPUT option ;
1424      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1425    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1426      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1427    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1428    o add time-dependent SST, SSS control
1429    o cost terms in ecco/ modularized (new cost_generic.F)
1430    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1431    o new infrastructure for seaice model vs. obs misfits in seaice/
1432      * driver from the_main_loop.F is seaice_cost_driver.F
1433      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1434      * gradient check in Exp. 6a of natl_box_adjoint/
1435    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1436      (see README file)
1437    
1438    checkpoint57q_post
1439    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1440    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1441      - bug was reported by Jean-Michel and Ian Fenty
1442    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1443      update exp. cpl_aim+ocn output.
1444    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1445      Needed for high-res. runs with large global files
1446      to be able to limit tapelev size
1447    o Changed some tests for adjoint:
1448      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1449      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1450      * global_ocean.90x40x15/ back to default 3-level checkpointing
1451    o Modifications to enable scripted COMMON to MODULE conversion
1452      * verification/OpenAD/code/ has necessary scripts and description;
1453      * converts, compiles and runs successfully;
1454    
1455    checkpoint57p_post
1456    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1457    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1458      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1459    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1460    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1461      (was already the case for dissipation with mom_vecinv,
1462       and also the case for grad.PhiHyd when staggered-timeStep)
1463      This will allow to put dissipation out-off the AB time-stepping.
1464     Unfortunately, affects truncation error. Update output of exp. that "fails"
1465      (cg2d matching number) and leave the others for later: front_relax(10),
1466      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1467      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1468    
1469    checkpoint57o_post
1470    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1471      (2) its ready to be documented during the 20050801 DocFest
1472    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1473      for ideal_2D_oce and lab_sea on linux_ia32_g77
1474    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1475      in global1x1_tot/code_seaice_adj to access indices 32, 33
1476      (worth another tag)
1477    
1478    checkpoint57n_post
1479    o adding precip control xx_precip 32
1480    o adding swflux control xx_swflux 33
1481    o Replacing 10 forcing penalty cost routines by 1 generic.
1482    o Implementing partitioning in time-mean and variable adjustment
1483      for atmos. state.
1484    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1485  o in natl_box_adjoint:  o in natl_box_adjoint:
1486    * updated: results_bulk/    * updated exp 1 to 10
1487    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1488    o updated global1x1/*_seaice_adj/
1489      to incorporate latest changes
1490    o enable useSingleCpuIO for mdsio vector routines
1491      (applies in particular to tapelev I/O)
1492    o removed inefficient K-loop in all active_file*control*.F
1493    
1494  checkpoint57m_post  checkpoint57m_post
1495  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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