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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.981 by gforget, Thu Apr 24 21:41:27 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 implementation of TAF directives for gchem,cfc,dic
8  o moved ptracer ctrl index 17 -> 32  o remove "exp5" (replaced by tutorial_deep_convection).
9    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
10      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
11      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
12      --> changes results in dome, exp4, internal_wave, seaice_obcs, and
13      tutorial_plume_on_slope.
14    o tutorial_deep_convection :
15      update the set-up and increase resolution and domain size ; start
16      from pseudo initial conditions = output at t=120mn in order to see
17      something happening when running testreport.
18    o pkg/seaice: add os7mp as an advection scheme
19                  add check for advection schemes
20                  add a flag for restoring T and S underneath sea ice
21    o pkg/my82: add netcdf-support and diagnostics
22    o thsice pkg:
23      - Now hsMax limits snow height by turning it into ice following
24        flooding scheme (and now conserving energy)
25      - Slight rewriting of the formula in thsice_calc_thick.F
26      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
27      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
28    
29    checkpoint59p
30    o gchem / dic / cfc :
31      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
32      - add new parameter files: "data.dic" & "data.cfc" ;
33      - various re-arrangement in initialisation & header file ;
34      - fix tutorial_global_oce_biogeo for multi-threaded test.
35    o pkg/dic: test for "pickup_dic" file when restarting ;
36      if no pickup-file, can restart with a re-initialised pH (same as it did
37      before) providing pickupStrictlyMatch is set to False.
38    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
39      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
40    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
41      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
42    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
43     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
44       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
45    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
46       scheme to use for vorticty-term ;
47     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
48       (with default selectVortScheme, return to original discretisation)
49     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
50    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
51    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
52      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
53      also fix diagnostics VISCAHW & VISCA4W.
54    
55    checkpoint59o
56    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
57    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
58      move a few statemens out the main loop into separate loops
59    o pkg/shelfice:
60      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
61        (kg/m^2/s), does not break tests, because in verification/isomip,
62        rhoConstFresh=rhoConst (by accident)
63      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
64      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
65        new file model/src/seawater.F, so that they are available for all pkgs.
66      - convert potential temperature into in-situ temperature. This changes the
67        isomip tests => update tests
68    o add a flag writePickupAtEnd (default=true) to be able to suppress
69      writing a pickup at the last timestep
70    o tools/mpack-1.6 :
71      - disable automake (not working) and autoconf (not needed).
72      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
73        also cleaner with much less compilation warnings.
74    o pkg/profiles:
75      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
76      (for "less than 32 characters name" compiler requirement)
77    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
78      conditions that have a different sampling frequency than S/T/U/V obcs
79    o pkg/diagnostics (stats-diags):
80      - fix global Min/Max in case 1 processor get only empty tiles
81    o genmake2: replace (4 times)
82         make genmake_tc_1.o >> genmake_warnings 2>&1
83      with
84         COMM="$CC $CFLAGS -c genmake_tc_1.c"
85         echo $COMM >> genmake_warnings
86         $COMM >> genmake_warnings 2>&1
87      to make genmake2 always see the value of CC as specified in the optfile.
88    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
89      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
90      - modify verification advect_cs test to test SOM-advection on CS-grid.
91    o pkg/ctrl:
92      - Rewrite of ctrl_map_ini_ecco.F,
93        introducing a generic routine (ctrl_map_ini_gen.F).
94      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
95    
96    checkpoint59n
97    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
98      number in dedicate array "hdiag":
99      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
100        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
101      - many small changes (integer format) for large number of diagnostics
102      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
103        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
104    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
105      usingSphericalGrid, this allows to define the rotated grid coordinates
106      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
107      geographical coordinates according to the inverse of the rotation defined
108      by the Euler angles, so that Coriolis parameter and online-interpolation by
109      exf works with the geographical coordinates on XC/YC/XG/YG.
110      Naturally, this feature does not work with all packages, so some
111      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
112      profiles), because there the coordinates are assumed to be regular
113      spherical grid coordinates.
114    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
115      - introduce isopycnal diffusion coefficient control.
116    o tools/adjoint_options:
117      - additional control vector components.
118    o pkg/mnc: have mnc create marginally meaning full coordinate variables
119      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
120    o pkg/mypackage:
121      - add example of read/write pickup for state-var ;
122      - add entry points to the main code for state-vars diags & write-pickup.
123    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
124      transitions for useExfYearlyFields
125      - add new subroutine that determines the file to read from for
126        use*YearlyFields = .TRUE. and .FALSE.
127      - add a verification experiment to global_with_exf that tests
128        useExfYearlyFields with USE_EXF_INTERPOLATION defined
129    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
130      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
131      subroutines (which could be generated from a template, because they are
132      almost identical), for now they are included in obcs_prescribe_read.F for
133      simplicity
134    o pkg/exf:
135      - add a little more diagnostic to exf_interp_read (in analogy to
136        mds_read_field, can be turned off with debugLevel < debugLevA=1)
137      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
138        ugly but fast by unrolling short inner loops, inserting a unroll=8
139        directive in routine lagran, and splitting a loop and making do while the
140        outermost loop (the latter requires the intoduction of index arrays)
141    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
142    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
143      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
144    o verification/seaice_obcs: updated for restart test and latest options
145    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
146      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
147      for now this is only available for the C-grid code and also within
148      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
149    
150    checkpoint59m
151    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
152      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
153    o gad_som : fix flux output (& diagnostics) to have same units as other  
154      advection scheme fluxes (was previously multiplied by deltaT).  
155    o added verification/seaice_obcs both to test seaice open boundaries
156      and to provide an example matlab scrpt for generating them
157    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
158    o pkg/salt_plume: clean up salt_plume_frac.F to
159      remove redundancy in PlumeMethod 1 and 4
160    o pkg/kpp: added saltplume diagnostics
161    o pkg/obcs and pkg/seaice:
162      - do not set uice and vice to zero when OB*icefile are unspecified
163      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
164      - moved seaice tracer obcs after call to seaice_growth
165    o pkg/salt_plume: added various options for salt plume depth
166      criterion and for vertical distribution of the salt
167    
168    checkpoint59l
169    o pkg/ptracers: new version of ptracers pickup:
170      read meta file and write only fields which are needed to restart.
171      ( same logic as main pickup file ; also using pickupStrictlyMatch )
172    o pkg/seaice:
173      - add timescale for melting due to warm mixed layer as a means of
174        setting SEAICE_availHeatFrac more conveniently
175      - add a CPP-flag/runtime parameter check for flooding algorithm
176      - reformulated availHeat in seaice_growth.F to be independent of AREA
177    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
178      unit changes
179    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
180    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
181      SX vector computer.
182    o pkg/seaice:
183      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
184        seaice forcing fields can now be read only through pkg/exf
185      - removed some unused halos
186    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
187    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
188      or U/VICE from U/VWIND before computing U/VSTRESS
189    
190    checkpoint59k
191    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
192      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
193    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
194      all experiments pass when compile with un-initialised var. checking option.
195    o added pkg/salt_plume
196    o script to test restart (for now, in MITgcm_contrib/jmc_script)
197    o pkg/seaice: new read/write pickup version.
198      read meta file and write only fields which are needed to restart.
199      ( same logic as main pickup file ; also using pickupStrictlyMatch )
200    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
201    o lab_sea.hb87: modify the domain & update output.hb87.txt :
202      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
203      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
204      process. Fixed here by closing the domain at the Northern boundary.
205    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
206    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
207      a set of consecutive levels in/from a 3-D array.
208    o pkg/ptracers:
209      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
210      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
211    
212    checkpoint59j
213    o in pkgs: dic, obcs, offline, rbcs:
214      standard way to compute coeff. for time interpolation between 2 time reccords
215      which retains full precision (& make results less dependent on compiler).
216      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
217    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
218      packages instead of reading ice cover and wind speed separately
219    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
220     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
221      to allow to compile customized code before the update)
222    o cleaning-up:
223      - fix CPP instruction syntax in pkg/obcs
224      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
225        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
226      - fix some threads issue in IO parts.
227    o pkg/dic:
228      - add tons of "_d 0" (--> much better testreports !)
229       and then update outputs of tutorial_global_oce_biogeo
230    o pkg/mom_fluxform:
231      add a special version of momentum advection intended to conserve momentum
232      next to a bathymetry step or a coastline edge. (default = off = #undef)
233    o new read/write pickup version:
234      - for now, only implemented for main (mdsio) pickup file.
235      - write out only what is needed to restart; merge pickup_nh , pickup_ph
236        and main pickup together.
237      - read meta file; read only what is needed to restart; stop if a field
238        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
239        if it make sense (even if the restart is not perfect).
240      - if no meta file, assume that pickup to read corresponds exactly to
241        a pickup that would currently be written.
242      - read pickup written in the old format (until checkpoint59i) if it
243        recognizes an old meta file (no field-list).
244      - add a meta file in exp. which starts from a pickup: 2 cases:
245        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
246         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
247        b) a meta file describing the content of the associated pickup file
248         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
249    o pkg/mdsio & pkg/rw:
250      - new routine to read a meta file ; new set of routine to read
251        Multiple-fields file (with meta file).
252    o added open boundary conditions capability for seaice
253        HSNOW, HSALT, UICE, and VICE
254    
255    checkpoint59i
256    o adjoint:
257      * fix multiDimAdvection adjoint
258        (partial recomputation problem by TAF for fVerT(:,:,kDown)
259        and comlev1 size definition (maxpass vs. max. number of tracers)
260      * verification/global_ocean.90x45x15 adjoint now tests
261        NLFS and multiDimAdvection using DST3 (=30)
262      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
263    o pkg/kpp: add "_d 0" to real constant (if missing);
264      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
265      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
266    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
267      for internal parameters related to restart process (formerly from PARAMS.h)
268      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
269    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
270      as argument. (only atm2d & obcs write_pickup have not yet been updated)
271    o pkg/monitor:
272      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
273      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
274      - account for deep Atmosphere factor and density factor (anelastic)
275    o added open boundary conditions capability for seaice HEFF and AREA
276    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
277      thermodynamics
278      - requires a little reorganization, which affects the testreport results
279        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
280        so that now the conservative form is tested
281      - add a few comments
282    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
283    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
284    o add new diagnostics to seaice: advective, diffusive fluxes (only for
285      multidim-advection, for scheme 2 they are not filled) and transports,
286      thermodynamic growth rates
287    o change units of EmPmR (inside the code, + within coupling interface)
288      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
289      Affects results @ truncation level (cg2d match) and update output of
290       experiments: lab_sea(6), global_ocean.90x40x15(10),
291      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
292      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
293      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
294      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
295    
296    checkpoint59h
297    o pkg/exf:
298      - improve vectorization by moving if-statement out of loops in
299        exf_mapfields, exf_radiation
300      - exf_bulkformulae.F: introduce 2D fields and vectorize code
301    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
302    o testreport:
303      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
304        monitor & update offline_exf_seaice exp. output.
305      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
306    o pkg/seaice:
307      - bug fix in the evp solver: boundary conditions were affected be
308        masking of zMax/zMin (changes results)
309      - minor bug fix in boundary conditions in seaice_calc_strainrates
310        (changes results for no_slip)
311      - seaice_lsr.F: make interpolation of eta dependent on boundaries
312      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
313      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
314        stress formulation and no-slip boundary conditions
315    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
316      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
317    o pkg/seaice: a first HSALT time stepping equation has been checked in
318    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
319      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
320      without requiring DO-IF statements
321    o pkg/thsice:
322      use continuous power-law function for partition of energy between lateral
323      melting/freezing and thinning/thickening ; old code using step function
324      still available with #undef THSICE_FRACEN_POWERLAW
325      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
326    o testreport: change AD testing : check against results/output_adm.txt
327      using same scripts as for forward test.
328    
329    checkpoint59g
330    o adjoint testing: in preparation for changing testreport:
331      - output format: cost and grad written on separated lines
332      - ad output results in directory "results" (instead of "results_ad")
333    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
334    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
335    o pkg/ecco: allow user defined cost function contributions
336    o testreport:
337      Allow to choose (per experiment) the list of tested output variables
338       and the main variable (used to issue a pass/FAIL ) ;
339      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
340      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
341      Also modify printing of summary:
342       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
343       b) echo the list of tested variables in the individual summary.txt of
344          each experiment.
345    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
346      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
347      (but still depend on the tile decompostion of the domain).
348    o pkg/seaice: change a discretization detail to make the B-grid code
349      "more symmetric". This change is likely to remove all "ridges/leads" that
350      where quasi-aligned with the grid in B-grid solutions. It may also be
351      the solution to the stress coupling issues with the B-grid.
352    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
353      remove .cvsignore from input dir. (since testreport no longer run here).
354    o pkg/thsice:
355     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
356     - fix reshaping of sea-ice just after advection:
357       melt all the ice only if ice-volume is too small.
358     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
359       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
360     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
361    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
362      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
363    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
364      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
365      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
366      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
367      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
368      -> update output.txt
369    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
370     this affects truncation error: -> update output.txt of exp:
371      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
372      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
373    
374    checkpoint59f
375    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
376    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
377      a bounded range (in forward mode)
378    o pkg/ecco, ctrl, autodiff and mom_common:
379     internal parameter controls, completements of implementations
380    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
381    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
382      (not seem any difference in testing results).
383    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
384       at face corners.
385    o pkg/generic_advdiff:
386     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
387      loop range indices for computing vertical advection tendency
388      and do the calculation in the interior only (no overlap) ;
389      for now, only implemented for SOM advection (to save CPU time).
390     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
391    o exch2 adjoint
392      First set of changes:
393      - add exch2 hand-written adjoint templates
394      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
395        This will require cleanup in pkg/autodiff/*.F
396        (changed routines currently kept separate in verif. code/)
397      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
398        that used to hide exch2 or cubed-sphere specific code
399        (commented via 'cph-exch2')
400    o pkg/seaice
401      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
402    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
403       output of global_ocean.cs32x15.thsice .
404    
405    checkpoint59e
406    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
407      for B-grid vector (not yet tested) and C-grid vector (<- only used
408      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
409    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
410      (#ifdef ALLOW_SALT_PLUME)
411    o gather_2d/scatter_2d: removed halo regions
412    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
413      scheme and the corresponding test case (under front_relax dir). For now,
414      only available with Skew-flux form and not yet tested in realistic set-up.
415      adjoint: store directives updated, but gradient checks deteriorated,
416      so maybe GM/Redi adjoint is now broken.
417    o seaice adjoint
418      * add AREA, HEFF, HSNOW as control variable
419        (should not change lab_sea results)
420      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
421    o pkg/seaice:
422      * added computation of saltFlux in seaice_growth;
423        For time being, sea ice salinity is assumed constant
424        contribution of snow flooding to freshening of sea ice is neglected.
425        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
426        defaults to 0.0 in order to maintain backward compatibility.
427        Typical values for SEAICE_salinity are 4 to 10 g/kg.
428      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
429      * added SEAICE_availHeatFrac, which specifies fraction of surface level
430        heat content used to melt or grow ice
431      * commented out cap of HICE: it helps keep ice thinner
432      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
433      * applied OBCS T/S mask to HEFFM sea ice mask
434    
435    checkpoint59d
436    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
437     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
438     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
439    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
440     and change default value of parameter "GM_Small_Number";
441     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
442       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
443       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
444    o pkg/ecco: cost function when applying pkg/smooth to controls
445    o pkg/ctrl: add forcingPrecond run time parameter
446    o pkg/seaice:
447     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
448     - fix bug in metric terms of u-equation in LSR solver (implicit part),
449       changes verification/lab_sea
450     - rearrange implicit part of u-equation in LSR solver to make it easier to
451       read, understand, and debug. This causes changes at the truncation level.
452     - fix (serious) bug in the boundary conditions (sign error in the implicit
453       part) of the LSR solver. Changes all LSR results.
454     - fixed problem with HSNOW initialization to avoid thick snow when AREA
455       is initilized with small values - does not change lab_sea results.
456     - added HsnowFile initialization capability
457    o pkg/smooth: addition to model/src and pkg/ctrl so allow
458     initialization of pkg/smooth and application to control vector
459    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
460    o dependencies: pkg/profiles requires pkg/cal
461    o pkg/profiles:
462     - added option ALLOW_PROFILES_GENERICGRID
463         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
464         that interpolation information (grid points and coefficients) is provided
465         within the netcdf input files.
466         -> sample matlab scripts can be found in MITgcm_contrib/gael
467         that allow you to prepare netcdf input files.
468     - also modified: cleaner include statements, cleaner error print statements,
469       cleaner stops when error, and more tests of the netcdf input files consistency.
470    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
471    o pkg/seaice:
472     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
473       requires a new routine: seaice_diagnostics_fill.F
474     - make sure that seaice does not move if not forced (pressure replacement
475       method, Hibler and Ip, 1995), changes results
476     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
477     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
478       It is turned off by default (=-1.), because it changes the results.
479     - make it possible to read AREA from a file, too.
480    
481    checkpoint59c
482    o add S/R and diagnostics for oceanic mixed-layer depth
483    o move GMRedi call after all vertical mixing schemes (including KPP)
484    o pkg/thsice:
485     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
486      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
487    o pkg/obcs:
488     - bug fix for balance code
489    o pkg/seaice:
490      - allow values of SEAICE_elasticParm > 1
491      - add new parameter SEAICE_evpTauRelax as an alternative
492        to SEAICE_elasticParm
493      - make lsr boundary conditions free slip (by default), changes result
494      - add code for no slip boundary conditions for lsr
495      - set minimum of zeta to zero (and not 4e8) (changes results)
496      - add a cap on AREA after advecting AREA if seaice_growth is not called
497    o change calculation of Visbeck K:
498      - no longer depend on tapering scheme; instead, compute slope (limited
499        by GM_maxSlope). this is equivalent to what was comuted before with
500        clipping or linear tappering.
501      - fix vertical averaging (wrong by 1/2 level)
502      - leave the old version (but will not be maintained) within
503        #ifdef OLD_VISBECK_CALC / #endif
504      - update output of exp. ideal_2D_oce
505    o change error catch in calc_r_star to improve vectorization
506    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
507      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
508    o adjoint:
509      Re-organized adjoint checkpointing according to Matt Mazloff
510      (but with modifs/completions/cleanups)
511      Storing is now bundled into large arrays to optimized I/O
512      (and second step in cleanup of the_main_loop)
513    
514    checkpoint59b
515    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
516      - export/import (between ocean & coupler) fields needed for ocean DIC.
517    o pkg/seaice:
518      - get rid of three more exchanges seaice_calc_viscosities (required
519        different loop boundaries in seaice_lsr and seaice_ocean_stress)
520      - bug fix in seaice_ocean_stress (update of lab_sea required)
521      - reduce loop boundaries to necessary minimum also in seaice_evp
522      - go back to the old way of computing deltaC/Z as the adjoint likes that
523        better
524    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
525      passive tracer to an Age Tracer) + update output.txt
526    o pkg/exf:
527      - implement A-grid / C-grid selection for wind-stress input files.
528      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
529      for now, in exf_bulk_largeyeager04.F only :
530      - change implementation for case where windspeed + 2. components wind-stress
531        are read-in. AND use rhoConstFresh to convert evap.
532    o pkg/seaice:
533      - use correct EXCH_UV for wind-forcing (on A-grid).
534      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
535        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
536    o pkg/exf:
537      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
538      EXF_INTERPOLATION:
539      - merge global_with_exf/code version of exf_interp_read.F
540        to the main code ;
541      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
542        reading the file ; Important: This options needs to be defined to recover
543        previous code.
544        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
545      - no longer loose real*8 precision along the way when using exf_iprec=64.
546    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
547      - change discretisation of evp-solver in order to avoid another exchange
548        (changes lab_sea) and clean up a little
549      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
550        help the adjoint (this also changes the results slightly)
551      - add a few "_d 0" where they had been missing in seaice_evp.F
552      - cleaning up: remove unused seaice_calc_rhs.F
553    o pkg/exf: some cleaning-up:
554      - change various "constants" into runtime parameters
555      - cleaned-up Large&Yeager04 routine which should eventually
556        replace exf_bulkformulae.F (changed names of S/R and CPP)
557        and merged various ALLOW_ATM_WIND options
558     only used with thsice pkg (in thsice_get_exf.F):
559      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
560        which are used when useStabilityFct_overIce=TRUE (= the default)
561      - change default values of ice & snow emissivity and scale downward LW
562        by ice & snow emissivity.
563    o pkg/thsice:
564     fix few little problems, in thsice_calc_thickn.F:
565      - growth vertically (and not laterally) if iceFrac == iceMaskMax
566      - melt only laterally if hIce < hThinIce (as the comments say)
567      and in thsice_extend.F:
568      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
569      - start to form ice as soon as the minimum ice-volume is reachable.
570     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
571      and cpl_aim+ocn
572    o pkg/kpp
573     - move computation of surface related input fields to KPP into a new
574       subroutine kpp_forcing_surf.F
575     - remove wrong (within bi,bj loops) EXCH calls.
576     - little cleaning (add argument myThid in last position, cvs header ...)
577     - for now, fix conservation problem by exchanging KPPviscAz (may not
578       be the best fix)
579    o pkg/seaice
580     - check for inconsistent evp parameter/cpp-flag combination
581     - remove leftover errIO flat for obsolete name list error handling
582    o OpenAD
583     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
584    
585    checkpoint59a
586    o pkg/seaice: some parameter clarifications and a little bit of clean up
587    o pkg/thsice: rename run-time parameters:
588       himin       -> hIceMin
589       himin0      -> hThinIce
590       hihig       -> hThickIce
591       i0          -> i0swFrac
592       transCoef   -> bMeltCoef
593       frac_energy -> fracMelting
594      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
595       with default values (for now) that do not change the results.
596      remove old version of thsice vars advection in pkg/seaice.
597    o in FFIELDS.h:
598      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
599      - make pLoad & sIceLoad always available (but still only used if
600         ATMOSPHERIC_LOADING is #define).
601    o pkg/kpp: replaced _KPP_RL with _RL
602    o bug fixes for vertical diffusivity computations when both KPP and
603        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
604        are no longer updating the vertical diffusivity array
605        (passed as argument) but are (re-) setting those arrays.
606    o pkg/seaice: fix bug in evp solver, while doing that
607      - change (improve?) discretization of stress computations for both
608        cgrid-lsr and evp solver
609      - add a new routine to compute strain rates
610      - the above changes lab_sea results
611      - add no slip conditions for evp solver (off by default), lsr-version
612        may follow
613      - fix exchange for shear at Z-points (does not change lab_sea)
614      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
615        (to force the user to pick a time step since there is not "safe" way
616        of choosing it)
617      - add principal stress diagnostics
618      - rearrange fields for evp a little to avoid having to call a: too many
619        exchanges and b: exchanges for stress trensor components which we do
620        not have.
621      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
622        of evp, complete rewrite for lsr case (latter is does not yet work
623        in all cases)
624    o pkg/kpp: add code to have mixing in shelf ice caverns
625      - add myThid to all kpp routines (long overdue)
626    
627    checkpoint59
628    o pkg/exf:
629      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
630        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
631      - move exf header files from lower_case.h to UPPER_CASE.h ;
632        add missing cvs Header & Name
633      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
634      - add namelist param. selectStressGridPosition, exf_monFreq
635      - retire many _CLIM routines, and remove data.exf_clim
636        + params moved to data.exf
637        + climsst, climsss now handled by exf_set_gen, i.e.
638          climss?period=0 refers to constant field,
639          climss?period=-12 to monthly forcing
640      - split up namelists in data.exf
641    o pkg/seaice:
642      - remove seaice_exch and seaice_exch_uv
643      - remove superfluous exchange of theta
644      - add myThid to seaice_budget_ocean/ice
645      - add new interface for atmospheric wind forcing (C-grid only)
646        + new routine
647        + two new field (taux, tauy for stress over ice)
648        + removed one global field (DAIRN) for C-grid case only
649    o pkg/thsise
650      - 2nd set of modifs for thsice adjoint in conjunction with exf
651    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
652    
653    checkpoint58y_post
654    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
655      vertical diffusivity, similar to that in MOM4; turned on using
656      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
657      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
658    o Added capability for 3D specification of background vertical diffusion
659      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
660      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
661      "data" file that contains the 3D vertical diffusivity coefficients.
662    o ice dynamics (pkg/seaice) with thsice thermodynamics:
663      - add code within pkg thsice to advect & diffuse sea-ice fields
664      similar to (and will replace) what has been added in  seaice_advdiff.F,
665      but: - conserving Mass, Heat & Salt.
666           - better when using non-linear advection scheme (not yet fully tested)
667           - can also be used in atmospheric set-up (for now, only the diffusion).
668    
669    checkpoint58x_post
670    o IO option for global-file compact format:
671      - add options when generating topology (utils/exch2/matlab-topology-generator)
672      - add I/O capability (pkg/mdsio).
673      - adapt utils/matlab/rdmds.m to read this format.
674      for now long-line format not yet supported by pkg/mdsio (& exch2).
675    o shelfice: add a few diagnostics
676    
677    checkpoint58w_post
678    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
679      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
680      (and replace horiVertRatio in NH code).
681      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
682                         and tutorial_plume_on_slope (sensitive to truncation)
683    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
684      directly to drive seaice model (C-grid only)
685    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
686     - reintroduce computation of wind from stress,
687     - compute tau (in exf_bulkformulae.F) from windstress averaged to
688       mass points to avoid tau = 0
689     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
690    o rdmnc.m: make it work with "global" files created with gluemnc
691    o rdmnc.m : some improvements in dealing with singleton dimension
692      (tested on all testreport mnc output files).
693    o genmake2: disable pkg/profiles if netcdf test fails.
694    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
695    o move call to cal_readparms up to make calendar parameters/variable available
696      to all packages
697    
698    checkpoint58v_post
699    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
700      useDynP_inEos_Zc tested.
701    o pkg/exf: changes to properly interpolate/mask/scale initial fields
702    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
703      and portions thereof.  See read_cs.txt for description and examples.
704    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
705      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
706      following the great-circle arc between those 2 points.
707    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
708      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
709    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
710     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
711     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
712     - still needs work (not working with some options ; efficiency to improve)
713       and serious testing.
714     - use this scheme for temperature & salinity in 2 advection test exp.:
715       advect_xy & advect_xz, respectively.
716    
717    checkpoint58u_post
718    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
719    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
720    o testreport: add option "-skipdir" to skip some test.
721    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
722      momentum calculation.
723    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
724    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
725      remove checkpoint.F and the_correction_step.F (no longer used);
726      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
727    o add option (linFSConserveTr) to correct for tracer source/sink due to
728      Linear Free surface
729    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
730    o pkg/thsice: fix reading mnc-pickups
731    
732    checkpoint58t_post
733    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
734    o pkg/mdsio:
735     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
736       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
737       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
738     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
739     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
740       either MDS_READ_FIELD or MDS_WRITE_FIELD )
741     - new S/R (to replace MDSWRITEMETA), which allows to write more
742       informations (variable names, time ...) to meta files.
743     - modify rdmds.m to give back the meta file content.
744    o pkg/diagnostics: change vertical interpolation to be safer, and more
745       flexible (define p-levels to interpolate to in data.diagnostics);
746      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
747       diagnostic pointer.
748    o pkg/seaice: more cleaning up of seaice_growth, added many comments
749    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
750    o fix multi-category seaice:
751     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
752       SEAICE_MULTICATEGORY
753     - fix short wave heat flux
754    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
755       and allow to use EVP solver. Change forward lab_sea: test both EVP
756       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
757    o Initial check-in of lab_sea adjoint
758      (very similar to natl_box_adjoint/code_seaice)
759      * used C-grid and EVP solver
760      * used KPP, GM/Redi
761      * uses inAdExact=.TRUE.
762      * gradient checks fail for both ADM and TLM
763        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
764        f.d. gradients actually seem more problematic than ADM, TLM gradients;
765        issue is related to forward mismatch between g77 an ifort
766    o pkg/seaice: overhaul of thermodynamics
767     - growth.F and groatb.F are replaced by new routine seaice_growth.F
768     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
769     - move a few global fields out of SEAICE.h into seaice_growth.F and
770       make them 2D (FICE/QNETO/ ...)
771     - remove FO (it is the same as QNETO)
772     - introduce a few local fields to avoid modifying external fields such
773       as atemp, etc.
774    
775    checkpoint58s_post
776    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
777      changed exf_set_gen.F so that
778        genperiod=0 means input file is one time-constant field and
779        genperiod=-12 means input file contains 12 monthly means
780    o CG2D: use pre-computed solver main-diagonal (stored in common block);
781      this affects truncation error ; generate new output file for exp. which
782      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
783        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
784        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
785        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
786        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
787        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
788    o start implementation of deep-atmosphere and anelastic formulation
789    o verification: remove 2nd copy of input files and use script "prepare_run"
790      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
791    o mom_common/vecinv/fluxform: fix a few initialisation isssues
792    o profiles: fix for multithreaded case
793    
794    o diagnostics: rename few diags:
795      s/'PRESSURE'/'RCENTER '/g
796      s/'TICE    '/'oceFreez'/g
797      s/'TAUX    '/'oceTAUX '/g
798      s/'TAUY    '/'oceTAUY '/g
799      s/'SWFLUX  '/'oceQsw  '/g
800      s/DIFx/DFxE/g
801      s/DIFy/DFyE/g
802      and add few ocean-forcing diagnostics:
803      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
804    o modifications to pkg/seaice/growth.F and budget.F, which change results of
805      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
806      as actual snow thickness.  It now refers everywhere to effective snow
807      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
808    
809    checkpoint58r_post
810    o modifications to pkg/seaice/growth.F, which change results of
811      lab_sea experiment: fixes pertain to melting snow over open water, to
812      masking EVAP under sea ice, and to using the correct AREA variable for
813      computations of EVAP, PRECIP, HSNOW, and GHEFF
814    o add ability to read bathy, salt, and theta using MNC (off by def)
815    o add flooding algorithm and advection of HSNOW for pkg/seaice;
816      both are turned off by default and do no change any results
817    o seaice advection with pkg/thsice: a step toward the use of non-linear
818      advection scheme, but #ifdef or commented out for now (requires more EXCH).
819    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
820      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
821      in natl_box (affects results @ truncation level: update output.txt)
822    o multi-threading and IO:
823      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
824      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
825        (needed to work with SingleCpuIO): tested in all verif. exp.
826    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
827      affects the results (but none of the verification test uses this scheme).
828    o Adding some pkg/diagnostics capability to pkg/seaice
829      (will certainly be subject to changes)
830    o ctrl: adding new control variables:
831      lwflux, lwdown, evap, snowprecip, apressure, runoff
832    
833    checkpoint58q_post
834    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
835      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
836      high_res_cube configuration by 4% on Columbia.
837    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
838      add (in global_with_exf/code) a version of EXF_INTERP_READ without
839      dynamical allocation (seems to work in multi-threaded).
840    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
841      single CPU io) so that TAF does not have to see EESUPPORT.h
842    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
843    
844    checkpoint58p_post
845    o obcs: stop if obcs is used with useCDscheme = .true.
846    o shelfice:
847     - fix a sign error so that no slip at shelfice interface works
848     - remove stop for combination non-hydrostatic code and shelfice. That does
849       not mean, that the results are correct, but at least they are numerically
850       stable
851    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
852    o added adjoint exch routined for all exch*3d* routines
853      and updated flow directives
854    
855    checkpoint58o_post
856    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
857      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
858    o change controling S/R for writing pickup file (new S/R do_write_pickup)
859      and clean-up reading/writing of pickup files.
860    o fix local version of read/write pickup (NH part) in rotating_tank/code
861    o simplify EXCH interface:
862     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
863     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
864    o added the regrid package
865    o shelfice:
866     - add a simple boundary layer scheme to reduce noise
867     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
868    
869    checkpoint58n_post
870    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
871       local variable (not in common block).
872    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
873      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
874      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
875        to work with SingleCpuIO.
876    o add "_d 0" to real constant of pkg/cfc subroutines ;
877       update exp. cfc_exemple & tutorial_cfc_offline output files.
878    o multi-threading and IO:
879      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
880        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
881      - barrier before and after reading.
882      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
883      - avoid using MDS_WRITELOCAL for LAND pkg output.
884      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
885        common-block variables ; Allows multi-threading with master-thread IO.
886    o change default MAX_NO_THREADS from 32 to 4 ;
887      and stop cleanly when MAX_NO_THREADS is too small.
888    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
889    
890    checkpoint58m_post
891    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
892       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
893    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
894       keep global_ocean.90x40x15 (for AD testing) with former secondary test
895       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
896    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
897        add MITgcm_tutorials (= code + all the tutorials)
898    o ecco, option to compute cost for total ssh (mean+anom)
899    o consistent with addition of ptracer and ssh in pkg/profiles
900    o profiles: adding ptracer and ssh
901    o testreport: change multi-test output-file name
902      (from output.txt.{name} to output.{name}.txt)
903    o profiles: now ok for mutli-tiles case
904    o seaice: add 4 parameters for different advection schemes for area,
905      (effective) seaice thickness, enthalphy, and snow height. Their default
906      is the standard parameter SEAICEadvScheme
907    o calc_gw:
908     - add cosFacU in zonal viscous flux (harmonic.visc.).
909     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
910       of tutorial_plume_on_slope.
911    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
912    o calc_gw: true flux-form, account for horizontal grid spacing.
913      update rotating_tank results, but not plume_on_slope (affected at
914      truncation level, 11 digits).
915    
916    checkpoint58l_post
917    o calc_gw:
918     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
919     - remove side-drag for now (need to fix it); update plume_on_slope results.
920     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
921    o commit code to make SST/SSS weights spatially variable
922      (based on either variable in-situ or variable initial T/S weights)
923    o pkg/ecco:
924      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
925        now based on horizontally varying weights wthetaLev, wsaltLev
926      * cost_averagesflags now returns year indices in addition to day, month
927      * sflux balance is performed on annual basis
928        (sflxumm, sfluxmm2, bal_sfluxmm)
929      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
930        including separate counting and multipliers
931    o pkg/rbcs
932      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
933    
934    checkpoint58k_post
935    o testreport:
936     - always build in dir. "build" (if not there, mkdir build instead of building
937       & running in input)
938     - run in dir run (if it exists), in build otherwise.
939     - call prepare_run (if input/prepare_run exists)
940     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
941    o pkg/exf modifications to interpolation and rotation routines for more
942       reasonable treatment of North Pole singularity: for tracers North Pole
943       value is set to northernmost zonal-mean value, for zonal velocity it is
944       set to zero, and for meridional velocity it is set to northernmost value.
945    o pkg/exf/exf_check_range.F
946     - add tile index to diagnostics and move stop statement to the very
947       end of the routine.
948    o pkg/diagnostics: (diagnostics_main_init.F)
949      define title of isomorphic variables according to the current config.
950    o pkg/thsice with pkg/seaice dynamics:
951    - fix domain of computation (interior only, required for exf) and do exchanges
952    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
953    o towards a standard way of dealing with multi-threading in MONITOR
954      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
955    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
956       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
957    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
958    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
959    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
960       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
961    o tracer advection:
962     - clean-up and simplify calc_common_factors.F
963     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
964       advection subroutine (but still not used within DST advection S/R)
965    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
966    
967    checkpoint58j_post
968    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
969      from file (collects calls previously in FORWARD_STEP)
970    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
971    o adjoint store dir. adjusted accordingly
972    o genmake2
973      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
974    
975    checkpoint58i_post
976    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
977      on wind stress (SEAICEstressFactor defaults to 1.)
978    o Total number of Timers is finite (<=40): comment out 2 non-essential one
979      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
980    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
981      on CS-grid: no longer loosing mass.
982    o exf & curvilinear-grid: no longer modify longitude xC & xG.
983    o pkg/ggl90: fix sloppy output and fix a bug
984    o pkg/seaice: added SEAICEuseEVPpickup parameter
985      - Set to false in order to start EVP solver with
986        non-EVP pickup files when using SEAICEuseEVP
987      - fix sign error in diffusion in seaice_calc_rhs
988    
989    checkpoint58h_post
990    * Modifications for bottom topography control
991      o replace hFacC by _hFacC at various places
992      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
993      o add non-self-adjoint cg2d_nsa
994      o update autodiff support routines
995      o re-initialise hfac after ctrl_depth_ini
996      o works for 5x5 box, doesnt work for global_ocean.90x40x15
997    * Adding verification for 5x5 box (4-layer) bottom topography control
998    
999    checkpoint58g_post
1000    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1001       used for mean seasonal cycle, mean diurnal cycle); add an example
1002       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1003    o pkg/ggl90:
1004      - add parameter (minimum surface kinetic energy)
1005      - fix bug (avoiding division by zero)
1006    o couple pkg/thsice to pkg/seaice:
1007      - modify advection in seaice to accomodate new scalar fields to be advected
1008      - only muliDimAdection scheme work with seaice/thsice
1009      - mapping of thsice-variables to seaice-variables, back and forth
1010      - does not break the verification experiments, but does not give the
1011        desired results either
1012    o pkg/seaice
1013      - make (default) second order advection a bit less confusing?
1014    
1015    checkpoint58f_post
1016    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1017      to pkg/seaice):
1018      - new routines thsice_map_exf and thsice_get_exf provide the interface
1019      - add an additional formal parameter to thsice_solve4temp
1020    o pkg/exf:
1021      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1022      - correct Stefan-Boltzmann constant
1023      - new parameter for longwave surface emittance
1024      - separate some stuff from exf_bulkformulae into new routines  
1025        exf_radiation, exf_wind
1026      - add new parameters and constants: longwave emissivity for ocean, ice
1027        and snow, evaporation parameters over ice
1028      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1029        either wind from stress or stress from wind
1030    o pkg/thSIce:
1031    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1032    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1033       and THSICE_CALC_THICKN
1034    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1035    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1036      to make debugging easier.
1037    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1038    o pkg/bulk_force:
1039      - clean-up comments and parameters ;
1040      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1041    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1042      generate new output for test-experiment: aim.5l_cs.thSI
1043    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1044      testreport accordingly
1045    
1046    checkpoint58e_post
1047    o SEAICE_CGRID adjoint done
1048    o R_STAR adjoint implemented.
1049      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1050      * need to sort out init. of h0facc, etc.
1051    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1052      to be able to use it in pure forward.
1053    
1054    checkpoint58d_post
1055    o upgrade simple test-experiment to tutorial example:
1056     step.1: duplicate the experiment and (step.2) will remove the old copy.
1057      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1058      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1059      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1060      tutorial_global_oce_biogeo    <- copy of dic_example
1061      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1062      tutorial_plume_on_slope       <- copy of plume_on_slope
1063      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1064      tutorial_global_oce_optim     <- empty for now (David ?)
1065      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1066     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1067    o correct a sign problem in cost_scat.F
1068    o obcs and ptracers: fix boundary conditions for advections schemes
1069      with larger stencil
1070    o thsice adjoint: start
1071    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1072      completeness
1073    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1074      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1075    o ptracers adjoint:
1076      * avoid extensive recomputatations
1077      * fix missing re-init. of gptr (missed by TAF)
1078    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1079      me to turn off the excessive output to STDOUT that this package produces
1080    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1081      and add those terms in Vector-Invariant formulation.
1082    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1083      if the control period (xx_hfluxperiod etc) is 0
1084    o in profiles pkg, clean routines and fix details
1085    o in ecco pkg, reading ssh data:
1086      fix problem in case the model does not start at iter0=0
1087    o fix mnc-pickup/restart for ptracers
1088    o new package prifiles:
1089      code to compute profile-based cost by Gael Forget
1090      (modifs in ecco, ctrl, autodiff)
1091    o Benign bug fix in initialization (spotted by M. Mazloff) of
1092      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1093    
1094    checkpoint58c_post
1095    o adjoint: finish NLFS adjoint and provide reference output in
1096      verification/global_ocean.90x40x15/results_ad_nlfs
1097    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1098      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1099      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1100      with SEAICE_CGRID defined.
1101    o move calendarDumps from "data" to "data.cal" and clean-up the code
1102      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1103    o add useEXF & useCAL flags (for now, set in hard-coded way)
1104    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1105      (were missing in NH mode, and wrong in quasihydrostatic mode).
1106      waiting for Chris updated version of calc_gw to add those CALLs.
1107    o fix bug in quasihydrostatic S/R ;
1108      add a test for this option: global_ocean.90x40x15.qshyd
1109    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1110      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1111    o add on/off flag useOffLine for package OFFLINE
1112    o seaice:
1113      - modify advection so that it works also on the C-grid
1114      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1115        problem in multi-tile runs with C-grid
1116      - add flags for clipping ice velocities and/or masking solver forcing
1117      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1118        C-grid solver
1119      - added a few comments to seaice_diffusion.F
1120      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1121        are now exclusive)
1122      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1123        required re-ordering the code a little:
1124       + make DAIRN global variable (defined in SEAICE)
1125       + move computation of the viscosities eta and zeta into a new separate
1126         routine (because I need to recompute them in seaice_ocean_stress.F)
1127    
1128    checkpoint58b_post
1129    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1130      update output.txt of exp. aim.5l_cs.thSI
1131    o various mnc cleanups and improvements:
1132      + shrink lookup tables by factor of ~4
1133      + better error reporting when running out of lookup space
1134      + able to handle longer path/file names (up to 500 chars)
1135    o adjoint:
1136      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1137      - TBD: "hidden" mom_vecinv recomp. in dynamics
1138    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1139     (allow to differentiate between forcing components using new integer flags:
1140      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1141     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1142    o ecco
1143      - enable trend removal from SSH anomaly obs.
1144    o adjoint
1145      - a fix for PmEpR when #undef EXACT_CONSERV
1146      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1147      - try to fix "hidden" recomp. in forward_step for NLFS
1148        (NLFS seems broken sometimes after I checked it in)
1149    o seaice:
1150     - add c-grid version of the dynamic solver:
1151       + three new routines that are the c-grid substitute lsr, dynsolver
1152         and ostres
1153       + put a few fields that were local to dynsolver into global common
1154         blocks, so that I can move the computation of stresses etc into
1155         seaice_lsr (saves coding but may break the adjoint).
1156     - replace more hardwired parameters by runtime parameters
1157     - add ice masks that mask the rhs of the implicit solvers where there
1158       is no ice (commented out in seaice_dynsolver, because i am not sure
1159       if this works properly), eventually this should replace the clipping
1160       of ice velocities in seaice_dynsolver to +/-40cm/s.
1161    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1162      include it only where its needed
1163    o move balancing of fluxes before the call of external_forcing_surf
1164    o seaice:
1165      - correct units of turning angles (now they are really in degrees)
1166      - move computation of GWATX/Y out of main routine into dynsolver
1167      - initialize GWATX/Y in seaice_init
1168    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1169      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1170    o seaice: add runtime flags for turning angles (default to zero)
1171    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1172      and trend from exf forcing and ctrl control adjustments
1173    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1174      (since checkpoint57x_post)
1175    o change the default rotation period to 86164.s = the Earth rotation
1176    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1177      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1178    o seaice advection: add code for choosing between the default (2nd order
1179      central differences) and multiDim advection schemes provided by
1180      pkg/generic_advdiff
1181    o seaice:
1182      - removed all references to SEAICE_GRID.h fields from
1183        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1184        (cubed-sphere configuration will change a little)
1185      - grid computations in seaice_init are obsolete now.
1186      - cleaned up code a little so that is easier to read (hopefully).
1187      - added new (better?) discretizations of default advection and diffusion
1188        (turn on with SEAICEuseFluxForm)
1189      - replace 1 in 3d global fields by kSurface in growth.F
1190      
1191    checkpoint58a_post
1192    o seaice:
1193      - bug fix in advect.F
1194    o shelfice:
1195      - separate shelfice load anomaly from pload (breaks with time
1196        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1197        Its default is 0., but it may be computed more cleverly from (unknown)
1198        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1199        done offline. A good approximation of the pressure load anomaly is
1200        necessary to avoid large initial adjustment processes underneath
1201        deep-reaching shelfice.
1202      - small fix in ISOMIP shelfice_thermodynamics
1203      - add more sophisticated thermodynamics of Hellmer (1989), this is
1204        now the default
1205      - give a few constants more intuitive names
1206    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1207      if bulk formulae are used in long integration (especially EmPmR). Turn
1208      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1209      if balancePrintMean, the imbalance that is substracted is printed to
1210      STDOUT.
1211    o fix bug (typo) in obcs_apply_eta.F
1212    o add a new package shelfice which enables us to model the circulation
1213      underneath shelf-ice with draughts of hundreds of meters.
1214     - works
1215     - to do: + include improved thermodynamics
1216              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1217                instead of new field kTopC
1218              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1219                instead of new field R_shelfIce and new code in ini_depth.F
1220                and ini_mask_etc.F?
1221              + adjust vertical mixing schemes?
1222    o seaice pkg:
1223     - add a cpp-flag to include a simple formula for a salinity dependent
1224       freezing point of sea water at the surface
1225     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1226       meridional stresses are now different (and hopefully correct)
1227    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1228       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1229       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1230    o pkg/diagnostics: add options and parameters for regional-statistics
1231       diagnostics ; define regions by reading a region-mask from a file
1232       (might add other options later)
1233    o pkg/bulk_force:
1234     - add option and parameters to use AIM surface-flux formulae.
1235     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1236       others forcing fields (defined in PARM05, parameter file "data") are loaded
1237       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1238     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1239     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1240     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1241       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1242     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1243    
1244    checkpoint58
1245    o add "--embed-source" option to genmake2 which, when the supporting
1246      tools can be compiled (as determined by genmake2) will turn on the
1247      embed_files package which then embeds the entire MITgcm source code
1248      (*.[fFhc] + Makefile) used for the build within the executable
1249      - requested by CNH but off by default
1250      - adds a paltry <9MB to the mitgcmuv executable in most cases
1251      - only writes the output when useEMBEDSRC in eedata is true
1252    o clean up 3-dim. relaxation codes:
1253      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1254      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1255      * Thanks to Tom Haine for testing!
1256    
1257    checkpoint57z_post
1258    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1259      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1260    o fix the pickup behavior for obcs in combination with ptracers
1261    o fix a bug in ptracers_external_fields_load
1262    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1263      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1264    o transfered surface NH pressure to eta field (if exactConserv).
1265    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1266         and update lab_sea output.txt file.
1267    o completing 3-dim. relaxation code: additional term
1268         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1269      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1270      * At compile time, in "EXF_OPTIONS.h" set
1271          #define  ALLOW_CLIMTEMP_RELAXATION
1272          #define  ALLOW_CLIMSALT_RELAXATION
1273      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1274          tauThetaClimRelax3Dim = 15552000.0,
1275          tauSaltClimRelax3Dim  = 15552000.0,
1276      * 3 cases:
1277          1) Use a constant-in-time 3-dim. field
1278          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1279          3) Real-time relax. to time-evolving prescribed field
1280    o Adding Laplacian-type smoothness constraint on
1281      initial and boundary (forcing) controls (ic, bc)
1282      * enable at compile-time via
1283        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1284      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1285      * Absolute scale somewhat unclear so far
1286      * no area weighting was included since no other cost term does so far
1287    
1288    checkpoint57y_post
1289    First step for a NLFS adjoint
1290    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1291    o new init. routines for calc_r_star, calc_surf_dr
1292    o still need to deal with ini_masks_etc
1293    o testreport seemed happy
1294    checkpoint57y_pre
1295    
1296    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1297    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1298    o add new offset feature to offline pkg (plus minor cleanup)
1299    o cfc fixes for final year of integration
1300    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1301      be in GCHEM_OPTIONS).
1302    
1303    checkpoint57x_post
1304    o fix testreport Pb in multiple test experiment.
1305    o cleanup our namelist syntax in verification:
1306      - make it more F95 standards compliant (some work still needed)
1307      - allows the vast majority of our tests to work with gfortran
1308    o Non-Hydrostatic:
1309     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1310     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1311    o Allow to apply AB on T,S rather than on AB(gT,gS):
1312     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1313     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1314       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1315     - need a "clever" read_pickup to restart from the other AB formulation
1316    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1317    o remove some unused variables (reduces number of compiler warnings)
1318    o adjoint
1319      * Disable useVariableViscosity for adjoint for time being
1320        (there are a number of extensive recomputations)
1321      * Initialize certain variables needed for adjoint
1322    
1323    checkpoint57w_post
1324    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1325                 fix the singleCpuIO RS version of MDSWRITEFIELD
1326       and add a WARNING if using globalFiles=T with multi-processors.
1327    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1328      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1329    o tracer advection scheme:
1330      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1331       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1332       was not very convenient).
1333      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1334       (further tests needed for the implicit DST & Flux-Limiter schemes).
1335    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1336      and sRef for convenience, handy, when you want to initialize
1337      ptracers in a large domain with a constant non-zero value. Also,
1338      untangle ptracers_init.F a little.
1339    
1340    checkpoint57v_post
1341    o change dome exp. to use variable viscosity in side-drag terms.
1342    o remove all the files from the cfc_offline test since they are now
1343      incorporated into tutorial_cfc_offline which has been producing
1344      identical results for a few days of testing
1345    o add new parameter: sideDragFactor to enable half-slip-side BC
1346      and change side-drag S/R to use viscosity from mom_calc_visc
1347      (can switch back by setting sideDragFactor=0.); affects results at
1348      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1349       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1350    o vorticity & strain are now computed without masking, to account for
1351      no-slip-side BC in variable viscosity calculation ; mask is applied
1352      anyway later on, before computing advection/coriolis terms.
1353    o modify exp4 to test new obcs support for reading from external files
1354      and for passive tracers
1355    o fix behavior of ptracers_monitor when monitor output is written to a
1356      netcdf-file; still not independent of monitor.F (writes in the same
1357      file).
1358    o change default value of tRef (put a uniform, meaningful value for ocean
1359      & atmos) and initialize sRef (was missing, as Martin mentioned).
1360    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1361      to be proportional to enstrophy dissipation length.  Thus,
1362       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1363      This is now consistent with Smagorinsky and with the manual.
1364    
1365    checkpoint57u_post
1366    o OBCS and PTRACERS: add open boundary support for passive tracers
1367      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1368        OB-values from file; this is not different from the way theta and salinity
1369        are treated
1370      - however, Orlanski-radiation conditions are not supported, and the model
1371        will stop if you use pTracers and Orlanski at the same time.
1372      - beefed up the rountine obcs_external_fields_load: now only those open
1373        boundary values are overwritten with values from files for which there
1374        are really files, otherwise the OB-fields remain untouched. This makes
1375        it possible to use different OBs at different ends of the domain (as
1376        with EXF)
1377    o reduce number of exch calls in shap_filt (s2).
1378    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1379      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1380    
1381    checkpoint57t_post
1382    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1383    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1384      same truncation, independent of the face number: affects affects several
1385      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1386    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1387      note that biharmonic viscosity + no-slip was not tested in any experiment.
1388    o fix bug in non-linear free-surf side-drag ; generate new output for
1389      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1390    o make mnc honor the writeBinaryPrec flag for most kinds of output
1391    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1392    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1393      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1394    o add brackets in multi-terms sum to get same truncation, independent of
1395      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1396      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1397    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1398      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1399      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1400      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1401      Suggested values of viscosity parameters found in mom_calc_visc.
1402      Many new viscosity diagnostics available.
1403    
1404    checkpoint57s_post
1405    o Add clearing-house for viscosity calculations, mom_calc_visc and
1406      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1407      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1408      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1409      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1410      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1411      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1412      ViscAhStrain and viscAhTension are now retired.
1413    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1414    o In response to JMC's bug report, genmake2 now ignores any soft-links
1415      that it finds in the *current* directory when searching for files.
1416      Soft-links found in any other source directories will still work as
1417      they did before.
1418    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1419      a C routine to unlimit the stack size
1420    o mnc-ify pkg/aim snapshot vars
1421    o mnc-ify pkg/land as requested by Daniel
1422    o various changes to mnc including:
1423      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1424      - output can now be grouped so that all files within a group
1425          change the ITER portion of their names in lock-step together
1426      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1427          and works with both EXCH1 and EXCH2 (but needs more testing)
1428      - writing works for all verification test cases w/ g77 on Linux
1429    
1430    checkpoint57r_post
1431    o make MNC variable initialization happen earlier
1432    o add diagnostics for (almost) each term of the momentum Eq.
1433    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1434    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1435    o remove MINIMAL_TAVE_OUTPUT option ;
1436      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1437    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1438      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1439    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1440    o add time-dependent SST, SSS control
1441    o cost terms in ecco/ modularized (new cost_generic.F)
1442    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1443    o new infrastructure for seaice model vs. obs misfits in seaice/
1444      * driver from the_main_loop.F is seaice_cost_driver.F
1445      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1446      * gradient check in Exp. 6a of natl_box_adjoint/
1447    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1448      (see README file)
1449    
1450    checkpoint57q_post
1451    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1452    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1453      - bug was reported by Jean-Michel and Ian Fenty
1454    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1455      update exp. cpl_aim+ocn output.
1456    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1457      Needed for high-res. runs with large global files
1458      to be able to limit tapelev size
1459    o Changed some tests for adjoint:
1460      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1461      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1462      * global_ocean.90x40x15/ back to default 3-level checkpointing
1463    o Modifications to enable scripted COMMON to MODULE conversion
1464      * verification/OpenAD/code/ has necessary scripts and description;
1465      * converts, compiles and runs successfully;
1466    
1467    checkpoint57p_post
1468    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1469    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1470      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1471    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1472    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1473      (was already the case for dissipation with mom_vecinv,
1474       and also the case for grad.PhiHyd when staggered-timeStep)
1475      This will allow to put dissipation out-off the AB time-stepping.
1476     Unfortunately, affects truncation error. Update output of exp. that "fails"
1477      (cg2d matching number) and leave the others for later: front_relax(10),
1478      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1479      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1480    
1481    checkpoint57o_post
1482    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1483      (2) its ready to be documented during the 20050801 DocFest
1484    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1485      for ideal_2D_oce and lab_sea on linux_ia32_g77
1486    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1487      in global1x1_tot/code_seaice_adj to access indices 32, 33
1488      (worth another tag)
1489    
1490    checkpoint57n_post
1491    o adding precip control xx_precip 32
1492    o adding swflux control xx_swflux 33
1493    o Replacing 10 forcing penalty cost routines by 1 generic.
1494    o Implementing partitioning in time-mean and variable adjustment
1495      for atmos. state.
1496    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1497  o in natl_box_adjoint:  o in natl_box_adjoint:
1498    * updated: results_bulk/    * updated exp 1 to 10
1499    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1500    o updated global1x1/*_seaice_adj/
1501      to incorporate latest changes
1502    o enable useSingleCpuIO for mdsio vector routines
1503      (applies in particular to tapelev I/O)
1504    o removed inefficient K-loop in all active_file*control*.F
1505    
1506  checkpoint57m_post  checkpoint57m_post
1507  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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