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revision 1.671 by jmc, Thu Jun 8 01:13:52 2006 UTC revision 1.987 by jmc, Tue May 6 19:02:20 2008 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    checkpoint59q
8    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
9       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
10    o Refresh tutorial_global_oce_biogeo, notably:
11      - change bathymetry (put back seamounts in ACC, use hFacs)
12      - change EOS (POLY3 --> JMD95Z)
13      - use Bryan-Lewis vertical diffusivity
14      - use multidimensional advection
15      - remove old virtual virtual in dic pkg, now done through ptracer pkg
16      - change a couple of parameters in dic pkg
17    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
18    o pkg/obcs: change default to OBCSfixTopo = .true.,
19      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
20      - replace "debugMode" with "debugLevel .GE. debLevB"
21    o implementation of TAF directives for gchem,cfc,dic
22    o remove "exp5" (replaced by tutorial_deep_convection).
23    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
24      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
25      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
26      --> changes results in exp4, seaice_obcs
27    o tutorial_deep_convection :
28      update the set-up and increase resolution and domain size ; start
29      from pseudo initial conditions = output at t=120mn in order to see
30      something happening when running testreport.
31    o pkg/seaice: add os7mp as an advection scheme
32                  add check for advection schemes
33                  add a flag for restoring T and S underneath sea ice
34    o pkg/my82: add netcdf-support and diagnostics
35    o thsice pkg:
36      - Now hsMax limits snow height by turning it into ice following
37        flooding scheme (and now conserving energy)
38      - Slight rewriting of the formula in thsice_calc_thick.F
39      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
40      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
41    
42    checkpoint59p
43    o gchem / dic / cfc :
44      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
45      - add new parameter files: "data.dic" & "data.cfc" ;
46      - various re-arrangement in initialisation & header file ;
47      - fix tutorial_global_oce_biogeo for multi-threaded test.
48    o pkg/dic: test for "pickup_dic" file when restarting ;
49      if no pickup-file, can restart with a re-initialised pH (same as it did
50      before) providing pickupStrictlyMatch is set to False.
51    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
52      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
53    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
54      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
55    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
56     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
57       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
58    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
59       scheme to use for vorticty-term ;
60     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
61       (with default selectVortScheme, return to original discretisation)
62     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
63    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
64    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
65      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
66      also fix diagnostics VISCAHW & VISCA4W.
67    
68    checkpoint59o
69    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
70    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
71      move a few statemens out the main loop into separate loops
72    o pkg/shelfice:
73      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
74        (kg/m^2/s), does not break tests, because in verification/isomip,
75        rhoConstFresh=rhoConst (by accident)
76      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
77      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
78        new file model/src/seawater.F, so that they are available for all pkgs.
79      - convert potential temperature into in-situ temperature. This changes the
80        isomip tests => update tests
81    o add a flag writePickupAtEnd (default=true) to be able to suppress
82      writing a pickup at the last timestep
83    o tools/mpack-1.6 :
84      - disable automake (not working) and autoconf (not needed).
85      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
86        also cleaner with much less compilation warnings.
87    o pkg/profiles:
88      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
89      (for "less than 32 characters name" compiler requirement)
90    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
91      conditions that have a different sampling frequency than S/T/U/V obcs
92    o pkg/diagnostics (stats-diags):
93      - fix global Min/Max in case 1 processor get only empty tiles
94    o genmake2: replace (4 times)
95         make genmake_tc_1.o >> genmake_warnings 2>&1
96      with
97         COMM="$CC $CFLAGS -c genmake_tc_1.c"
98         echo $COMM >> genmake_warnings
99         $COMM >> genmake_warnings 2>&1
100      to make genmake2 always see the value of CC as specified in the optfile.
101    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
102      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
103      - modify verification advect_cs test to test SOM-advection on CS-grid.
104    o pkg/ctrl:
105      - Rewrite of ctrl_map_ini_ecco.F,
106        introducing a generic routine (ctrl_map_ini_gen.F).
107      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
108    
109    checkpoint59n
110    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
111      number in dedicate array "hdiag":
112      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
113        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
114      - many small changes (integer format) for large number of diagnostics
115      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
116        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
117    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
118      usingSphericalGrid, this allows to define the rotated grid coordinates
119      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
120      geographical coordinates according to the inverse of the rotation defined
121      by the Euler angles, so that Coriolis parameter and online-interpolation by
122      exf works with the geographical coordinates on XC/YC/XG/YG.
123      Naturally, this feature does not work with all packages, so some
124      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
125      profiles), because there the coordinates are assumed to be regular
126      spherical grid coordinates.
127    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
128      - introduce isopycnal diffusion coefficient control.
129    o tools/adjoint_options:
130      - additional control vector components.
131    o pkg/mnc: have mnc create marginally meaning full coordinate variables
132      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
133    o pkg/mypackage:
134      - add example of read/write pickup for state-var ;
135      - add entry points to the main code for state-vars diags & write-pickup.
136    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
137      transitions for useExfYearlyFields
138      - add new subroutine that determines the file to read from for
139        use*YearlyFields = .TRUE. and .FALSE.
140      - add a verification experiment to global_with_exf that tests
141        useExfYearlyFields with USE_EXF_INTERPOLATION defined
142    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
143      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
144      subroutines (which could be generated from a template, because they are
145      almost identical), for now they are included in obcs_prescribe_read.F for
146      simplicity
147    o pkg/exf:
148      - add a little more diagnostic to exf_interp_read (in analogy to
149        mds_read_field, can be turned off with debugLevel < debugLevA=1)
150      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
151        ugly but fast by unrolling short inner loops, inserting a unroll=8
152        directive in routine lagran, and splitting a loop and making do while the
153        outermost loop (the latter requires the intoduction of index arrays)
154    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
155    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
156      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
157    o verification/seaice_obcs: updated for restart test and latest options
158    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
159      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
160      for now this is only available for the C-grid code and also within
161      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
162    
163    checkpoint59m
164    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
165      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
166    o gad_som : fix flux output (& diagnostics) to have same units as other  
167      advection scheme fluxes (was previously multiplied by deltaT).  
168    o added verification/seaice_obcs both to test seaice open boundaries
169      and to provide an example matlab scrpt for generating them
170    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
171    o pkg/salt_plume: clean up salt_plume_frac.F to
172      remove redundancy in PlumeMethod 1 and 4
173    o pkg/kpp: added saltplume diagnostics
174    o pkg/obcs and pkg/seaice:
175      - do not set uice and vice to zero when OB*icefile are unspecified
176      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
177      - moved seaice tracer obcs after call to seaice_growth
178    o pkg/salt_plume: added various options for salt plume depth
179      criterion and for vertical distribution of the salt
180    
181    checkpoint59l
182    o pkg/ptracers: new version of ptracers pickup:
183      read meta file and write only fields which are needed to restart.
184      ( same logic as main pickup file ; also using pickupStrictlyMatch )
185    o pkg/seaice:
186      - add timescale for melting due to warm mixed layer as a means of
187        setting SEAICE_availHeatFrac more conveniently
188      - add a CPP-flag/runtime parameter check for flooding algorithm
189      - reformulated availHeat in seaice_growth.F to be independent of AREA
190    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
191      unit changes
192    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
193    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
194      SX vector computer.
195    o pkg/seaice:
196      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
197        seaice forcing fields can now be read only through pkg/exf
198      - removed some unused halos
199    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
200    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
201      or U/VICE from U/VWIND before computing U/VSTRESS
202    
203    checkpoint59k
204    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
205      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
206    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
207      all experiments pass when compile with un-initialised var. checking option.
208    o added pkg/salt_plume
209    o script to test restart (for now, in MITgcm_contrib/jmc_script)
210    o pkg/seaice: new read/write pickup version.
211      read meta file and write only fields which are needed to restart.
212      ( same logic as main pickup file ; also using pickupStrictlyMatch )
213    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
214    o lab_sea.hb87: modify the domain & update output.hb87.txt :
215      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
216      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
217      process. Fixed here by closing the domain at the Northern boundary.
218    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
219    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
220      a set of consecutive levels in/from a 3-D array.
221    o pkg/ptracers:
222      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
223      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
224    
225    checkpoint59j
226    o in pkgs: dic, obcs, offline, rbcs:
227      standard way to compute coeff. for time interpolation between 2 time reccords
228      which retains full precision (& make results less dependent on compiler).
229      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
230    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
231      packages instead of reading ice cover and wind speed separately
232    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
233     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
234      to allow to compile customized code before the update)
235    o cleaning-up:
236      - fix CPP instruction syntax in pkg/obcs
237      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
238        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
239      - fix some threads issue in IO parts.
240    o pkg/dic:
241      - add tons of "_d 0" (--> much better testreports !)
242       and then update outputs of tutorial_global_oce_biogeo
243    o pkg/mom_fluxform:
244      add a special version of momentum advection intended to conserve momentum
245      next to a bathymetry step or a coastline edge. (default = off = #undef)
246    o new read/write pickup version:
247      - for now, only implemented for main (mdsio) pickup file.
248      - write out only what is needed to restart; merge pickup_nh , pickup_ph
249        and main pickup together.
250      - read meta file; read only what is needed to restart; stop if a field
251        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
252        if it make sense (even if the restart is not perfect).
253      - if no meta file, assume that pickup to read corresponds exactly to
254        a pickup that would currently be written.
255      - read pickup written in the old format (until checkpoint59i) if it
256        recognizes an old meta file (no field-list).
257      - add a meta file in exp. which starts from a pickup: 2 cases:
258        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
259         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
260        b) a meta file describing the content of the associated pickup file
261         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
262    o pkg/mdsio & pkg/rw:
263      - new routine to read a meta file ; new set of routine to read
264        Multiple-fields file (with meta file).
265    o added open boundary conditions capability for seaice
266        HSNOW, HSALT, UICE, and VICE
267    
268    checkpoint59i
269    o adjoint:
270      * fix multiDimAdvection adjoint
271        (partial recomputation problem by TAF for fVerT(:,:,kDown)
272        and comlev1 size definition (maxpass vs. max. number of tracers)
273      * verification/global_ocean.90x45x15 adjoint now tests
274        NLFS and multiDimAdvection using DST3 (=30)
275      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
276    o pkg/kpp: add "_d 0" to real constant (if missing);
277      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
278      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
279    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
280      for internal parameters related to restart process (formerly from PARAMS.h)
281      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
282    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
283      as argument. (only atm2d & obcs write_pickup have not yet been updated)
284    o pkg/monitor:
285      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
286      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
287      - account for deep Atmosphere factor and density factor (anelastic)
288    o added open boundary conditions capability for seaice HEFF and AREA
289    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
290      thermodynamics
291      - requires a little reorganization, which affects the testreport results
292        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
293        so that now the conservative form is tested
294      - add a few comments
295    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
296    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
297    o add new diagnostics to seaice: advective, diffusive fluxes (only for
298      multidim-advection, for scheme 2 they are not filled) and transports,
299      thermodynamic growth rates
300    o change units of EmPmR (inside the code, + within coupling interface)
301      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
302      Affects results @ truncation level (cg2d match) and update output of
303       experiments: lab_sea(6), global_ocean.90x40x15(10),
304      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
305      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
306      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
307      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
308    
309    checkpoint59h
310    o pkg/exf:
311      - improve vectorization by moving if-statement out of loops in
312        exf_mapfields, exf_radiation
313      - exf_bulkformulae.F: introduce 2D fields and vectorize code
314    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
315    o testreport:
316      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
317        monitor & update offline_exf_seaice exp. output.
318      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
319    o pkg/seaice:
320      - bug fix in the evp solver: boundary conditions were affected be
321        masking of zMax/zMin (changes results)
322      - minor bug fix in boundary conditions in seaice_calc_strainrates
323        (changes results for no_slip)
324      - seaice_lsr.F: make interpolation of eta dependent on boundaries
325      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
326      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
327        stress formulation and no-slip boundary conditions
328    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
329      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
330    o pkg/seaice: a first HSALT time stepping equation has been checked in
331    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
332      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
333      without requiring DO-IF statements
334    o pkg/thsice:
335      use continuous power-law function for partition of energy between lateral
336      melting/freezing and thinning/thickening ; old code using step function
337      still available with #undef THSICE_FRACEN_POWERLAW
338      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
339    o testreport: change AD testing : check against results/output_adm.txt
340      using same scripts as for forward test.
341    
342    checkpoint59g
343    o adjoint testing: in preparation for changing testreport:
344      - output format: cost and grad written on separated lines
345      - ad output results in directory "results" (instead of "results_ad")
346    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
347    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
348    o pkg/ecco: allow user defined cost function contributions
349    o testreport:
350      Allow to choose (per experiment) the list of tested output variables
351       and the main variable (used to issue a pass/FAIL ) ;
352      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
353      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
354      Also modify printing of summary:
355       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
356       b) echo the list of tested variables in the individual summary.txt of
357          each experiment.
358    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
359      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
360      (but still depend on the tile decompostion of the domain).
361    o pkg/seaice: change a discretization detail to make the B-grid code
362      "more symmetric". This change is likely to remove all "ridges/leads" that
363      where quasi-aligned with the grid in B-grid solutions. It may also be
364      the solution to the stress coupling issues with the B-grid.
365    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
366      remove .cvsignore from input dir. (since testreport no longer run here).
367    o pkg/thsice:
368     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
369     - fix reshaping of sea-ice just after advection:
370       melt all the ice only if ice-volume is too small.
371     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
372       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
373     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
374    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
375      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
376    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
377      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
378      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
379      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
380      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
381      -> update output.txt
382    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
383     this affects truncation error: -> update output.txt of exp:
384      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
385      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
386    
387    checkpoint59f
388    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
389    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
390      a bounded range (in forward mode)
391    o pkg/ecco, ctrl, autodiff and mom_common:
392     internal parameter controls, completements of implementations
393    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
394    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
395      (not seem any difference in testing results).
396    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
397       at face corners.
398    o pkg/generic_advdiff:
399     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
400      loop range indices for computing vertical advection tendency
401      and do the calculation in the interior only (no overlap) ;
402      for now, only implemented for SOM advection (to save CPU time).
403     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
404    o exch2 adjoint
405      First set of changes:
406      - add exch2 hand-written adjoint templates
407      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
408        This will require cleanup in pkg/autodiff/*.F
409        (changed routines currently kept separate in verif. code/)
410      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
411        that used to hide exch2 or cubed-sphere specific code
412        (commented via 'cph-exch2')
413    o pkg/seaice
414      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
415    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
416       output of global_ocean.cs32x15.thsice .
417    
418    checkpoint59e
419    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
420      for B-grid vector (not yet tested) and C-grid vector (<- only used
421      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
422    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
423      (#ifdef ALLOW_SALT_PLUME)
424    o gather_2d/scatter_2d: removed halo regions
425    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
426      scheme and the corresponding test case (under front_relax dir). For now,
427      only available with Skew-flux form and not yet tested in realistic set-up.
428      adjoint: store directives updated, but gradient checks deteriorated,
429      so maybe GM/Redi adjoint is now broken.
430    o seaice adjoint
431      * add AREA, HEFF, HSNOW as control variable
432        (should not change lab_sea results)
433      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
434    o pkg/seaice:
435      * added computation of saltFlux in seaice_growth;
436        For time being, sea ice salinity is assumed constant
437        contribution of snow flooding to freshening of sea ice is neglected.
438        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
439        defaults to 0.0 in order to maintain backward compatibility.
440        Typical values for SEAICE_salinity are 4 to 10 g/kg.
441      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
442      * added SEAICE_availHeatFrac, which specifies fraction of surface level
443        heat content used to melt or grow ice
444      * commented out cap of HICE: it helps keep ice thinner
445      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
446      * applied OBCS T/S mask to HEFFM sea ice mask
447    
448    checkpoint59d
449    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
450     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
451     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
452    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
453     and change default value of parameter "GM_Small_Number";
454     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
455       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
456       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
457    o pkg/ecco: cost function when applying pkg/smooth to controls
458    o pkg/ctrl: add forcingPrecond run time parameter
459    o pkg/seaice:
460     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
461     - fix bug in metric terms of u-equation in LSR solver (implicit part),
462       changes verification/lab_sea
463     - rearrange implicit part of u-equation in LSR solver to make it easier to
464       read, understand, and debug. This causes changes at the truncation level.
465     - fix (serious) bug in the boundary conditions (sign error in the implicit
466       part) of the LSR solver. Changes all LSR results.
467     - fixed problem with HSNOW initialization to avoid thick snow when AREA
468       is initilized with small values - does not change lab_sea results.
469     - added HsnowFile initialization capability
470    o pkg/smooth: addition to model/src and pkg/ctrl so allow
471     initialization of pkg/smooth and application to control vector
472    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
473    o dependencies: pkg/profiles requires pkg/cal
474    o pkg/profiles:
475     - added option ALLOW_PROFILES_GENERICGRID
476         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
477         that interpolation information (grid points and coefficients) is provided
478         within the netcdf input files.
479         -> sample matlab scripts can be found in MITgcm_contrib/gael
480         that allow you to prepare netcdf input files.
481     - also modified: cleaner include statements, cleaner error print statements,
482       cleaner stops when error, and more tests of the netcdf input files consistency.
483    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
484    o pkg/seaice:
485     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
486       requires a new routine: seaice_diagnostics_fill.F
487     - make sure that seaice does not move if not forced (pressure replacement
488       method, Hibler and Ip, 1995), changes results
489     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
490     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
491       It is turned off by default (=-1.), because it changes the results.
492     - make it possible to read AREA from a file, too.
493    
494    checkpoint59c
495    o add S/R and diagnostics for oceanic mixed-layer depth
496    o move GMRedi call after all vertical mixing schemes (including KPP)
497    o pkg/thsice:
498     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
499      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
500    o pkg/obcs:
501     - bug fix for balance code
502    o pkg/seaice:
503      - allow values of SEAICE_elasticParm > 1
504      - add new parameter SEAICE_evpTauRelax as an alternative
505        to SEAICE_elasticParm
506      - make lsr boundary conditions free slip (by default), changes result
507      - add code for no slip boundary conditions for lsr
508      - set minimum of zeta to zero (and not 4e8) (changes results)
509      - add a cap on AREA after advecting AREA if seaice_growth is not called
510    o change calculation of Visbeck K:
511      - no longer depend on tapering scheme; instead, compute slope (limited
512        by GM_maxSlope). this is equivalent to what was comuted before with
513        clipping or linear tappering.
514      - fix vertical averaging (wrong by 1/2 level)
515      - leave the old version (but will not be maintained) within
516        #ifdef OLD_VISBECK_CALC / #endif
517      - update output of exp. ideal_2D_oce
518    o change error catch in calc_r_star to improve vectorization
519    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
520      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
521    o adjoint:
522      Re-organized adjoint checkpointing according to Matt Mazloff
523      (but with modifs/completions/cleanups)
524      Storing is now bundled into large arrays to optimized I/O
525      (and second step in cleanup of the_main_loop)
526    
527    checkpoint59b
528    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
529      - export/import (between ocean & coupler) fields needed for ocean DIC.
530    o pkg/seaice:
531      - get rid of three more exchanges seaice_calc_viscosities (required
532        different loop boundaries in seaice_lsr and seaice_ocean_stress)
533      - bug fix in seaice_ocean_stress (update of lab_sea required)
534      - reduce loop boundaries to necessary minimum also in seaice_evp
535      - go back to the old way of computing deltaC/Z as the adjoint likes that
536        better
537    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
538      passive tracer to an Age Tracer) + update output.txt
539    o pkg/exf:
540      - implement A-grid / C-grid selection for wind-stress input files.
541      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
542      for now, in exf_bulk_largeyeager04.F only :
543      - change implementation for case where windspeed + 2. components wind-stress
544        are read-in. AND use rhoConstFresh to convert evap.
545    o pkg/seaice:
546      - use correct EXCH_UV for wind-forcing (on A-grid).
547      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
548        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
549    o pkg/exf:
550      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
551      EXF_INTERPOLATION:
552      - merge global_with_exf/code version of exf_interp_read.F
553        to the main code ;
554      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
555        reading the file ; Important: This options needs to be defined to recover
556        previous code.
557        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
558      - no longer loose real*8 precision along the way when using exf_iprec=64.
559    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
560      - change discretisation of evp-solver in order to avoid another exchange
561        (changes lab_sea) and clean up a little
562      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
563        help the adjoint (this also changes the results slightly)
564      - add a few "_d 0" where they had been missing in seaice_evp.F
565      - cleaning up: remove unused seaice_calc_rhs.F
566    o pkg/exf: some cleaning-up:
567      - change various "constants" into runtime parameters
568      - cleaned-up Large&Yeager04 routine which should eventually
569        replace exf_bulkformulae.F (changed names of S/R and CPP)
570        and merged various ALLOW_ATM_WIND options
571     only used with thsice pkg (in thsice_get_exf.F):
572      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
573        which are used when useStabilityFct_overIce=TRUE (= the default)
574      - change default values of ice & snow emissivity and scale downward LW
575        by ice & snow emissivity.
576    o pkg/thsice:
577     fix few little problems, in thsice_calc_thickn.F:
578      - growth vertically (and not laterally) if iceFrac == iceMaskMax
579      - melt only laterally if hIce < hThinIce (as the comments say)
580      and in thsice_extend.F:
581      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
582      - start to form ice as soon as the minimum ice-volume is reachable.
583     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
584      and cpl_aim+ocn
585    o pkg/kpp
586     - move computation of surface related input fields to KPP into a new
587       subroutine kpp_forcing_surf.F
588     - remove wrong (within bi,bj loops) EXCH calls.
589     - little cleaning (add argument myThid in last position, cvs header ...)
590     - for now, fix conservation problem by exchanging KPPviscAz (may not
591       be the best fix)
592    o pkg/seaice
593     - check for inconsistent evp parameter/cpp-flag combination
594     - remove leftover errIO flat for obsolete name list error handling
595    o OpenAD
596     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
597    
598    checkpoint59a
599    o pkg/seaice: some parameter clarifications and a little bit of clean up
600    o pkg/thsice: rename run-time parameters:
601       himin       -> hIceMin
602       himin0      -> hThinIce
603       hihig       -> hThickIce
604       i0          -> i0swFrac
605       transCoef   -> bMeltCoef
606       frac_energy -> fracMelting
607      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
608       with default values (for now) that do not change the results.
609      remove old version of thsice vars advection in pkg/seaice.
610    o in FFIELDS.h:
611      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
612      - make pLoad & sIceLoad always available (but still only used if
613         ATMOSPHERIC_LOADING is #define).
614    o pkg/kpp: replaced _KPP_RL with _RL
615    o bug fixes for vertical diffusivity computations when both KPP and
616        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
617        are no longer updating the vertical diffusivity array
618        (passed as argument) but are (re-) setting those arrays.
619    o pkg/seaice: fix bug in evp solver, while doing that
620      - change (improve?) discretization of stress computations for both
621        cgrid-lsr and evp solver
622      - add a new routine to compute strain rates
623      - the above changes lab_sea results
624      - add no slip conditions for evp solver (off by default), lsr-version
625        may follow
626      - fix exchange for shear at Z-points (does not change lab_sea)
627      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
628        (to force the user to pick a time step since there is not "safe" way
629        of choosing it)
630      - add principal stress diagnostics
631      - rearrange fields for evp a little to avoid having to call a: too many
632        exchanges and b: exchanges for stress trensor components which we do
633        not have.
634      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
635        of evp, complete rewrite for lsr case (latter is does not yet work
636        in all cases)
637    o pkg/kpp: add code to have mixing in shelf ice caverns
638      - add myThid to all kpp routines (long overdue)
639    
640    checkpoint59
641    o pkg/exf:
642      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
643        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
644      - move exf header files from lower_case.h to UPPER_CASE.h ;
645        add missing cvs Header & Name
646      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
647      - add namelist param. selectStressGridPosition, exf_monFreq
648      - retire many _CLIM routines, and remove data.exf_clim
649        + params moved to data.exf
650        + climsst, climsss now handled by exf_set_gen, i.e.
651          climss?period=0 refers to constant field,
652          climss?period=-12 to monthly forcing
653      - split up namelists in data.exf
654    o pkg/seaice:
655      - remove seaice_exch and seaice_exch_uv
656      - remove superfluous exchange of theta
657      - add myThid to seaice_budget_ocean/ice
658      - add new interface for atmospheric wind forcing (C-grid only)
659        + new routine
660        + two new field (taux, tauy for stress over ice)
661        + removed one global field (DAIRN) for C-grid case only
662    o pkg/thsise
663      - 2nd set of modifs for thsice adjoint in conjunction with exf
664    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
665    
666    checkpoint58y_post
667    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
668      vertical diffusivity, similar to that in MOM4; turned on using
669      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
670      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
671    o Added capability for 3D specification of background vertical diffusion
672      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
673      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
674      "data" file that contains the 3D vertical diffusivity coefficients.
675    o ice dynamics (pkg/seaice) with thsice thermodynamics:
676      - add code within pkg thsice to advect & diffuse sea-ice fields
677      similar to (and will replace) what has been added in  seaice_advdiff.F,
678      but: - conserving Mass, Heat & Salt.
679           - better when using non-linear advection scheme (not yet fully tested)
680           - can also be used in atmospheric set-up (for now, only the diffusion).
681    
682    checkpoint58x_post
683    o IO option for global-file compact format:
684      - add options when generating topology (utils/exch2/matlab-topology-generator)
685      - add I/O capability (pkg/mdsio).
686      - adapt utils/matlab/rdmds.m to read this format.
687      for now long-line format not yet supported by pkg/mdsio (& exch2).
688    o shelfice: add a few diagnostics
689    
690    checkpoint58w_post
691    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
692      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
693      (and replace horiVertRatio in NH code).
694      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
695                         and tutorial_plume_on_slope (sensitive to truncation)
696    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
697      directly to drive seaice model (C-grid only)
698    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
699     - reintroduce computation of wind from stress,
700     - compute tau (in exf_bulkformulae.F) from windstress averaged to
701       mass points to avoid tau = 0
702     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
703    o rdmnc.m: make it work with "global" files created with gluemnc
704    o rdmnc.m : some improvements in dealing with singleton dimension
705      (tested on all testreport mnc output files).
706    o genmake2: disable pkg/profiles if netcdf test fails.
707    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
708    o move call to cal_readparms up to make calendar parameters/variable available
709      to all packages
710    
711    checkpoint58v_post
712    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
713      useDynP_inEos_Zc tested.
714    o pkg/exf: changes to properly interpolate/mask/scale initial fields
715    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
716      and portions thereof.  See read_cs.txt for description and examples.
717    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
718      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
719      following the great-circle arc between those 2 points.
720    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
721      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
722    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
723     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
724     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
725     - still needs work (not working with some options ; efficiency to improve)
726       and serious testing.
727     - use this scheme for temperature & salinity in 2 advection test exp.:
728       advect_xy & advect_xz, respectively.
729    
730    checkpoint58u_post
731    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
732    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
733    o testreport: add option "-skipdir" to skip some test.
734    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
735      momentum calculation.
736    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
737    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
738      remove checkpoint.F and the_correction_step.F (no longer used);
739      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
740    o add option (linFSConserveTr) to correct for tracer source/sink due to
741      Linear Free surface
742    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
743    o pkg/thsice: fix reading mnc-pickups
744    
745    checkpoint58t_post
746    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
747    o pkg/mdsio:
748     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
749       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
750       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
751     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
752     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
753       either MDS_READ_FIELD or MDS_WRITE_FIELD )
754     - new S/R (to replace MDSWRITEMETA), which allows to write more
755       informations (variable names, time ...) to meta files.
756     - modify rdmds.m to give back the meta file content.
757    o pkg/diagnostics: change vertical interpolation to be safer, and more
758       flexible (define p-levels to interpolate to in data.diagnostics);
759      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
760       diagnostic pointer.
761    o pkg/seaice: more cleaning up of seaice_growth, added many comments
762    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
763    o fix multi-category seaice:
764     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
765       SEAICE_MULTICATEGORY
766     - fix short wave heat flux
767    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
768       and allow to use EVP solver. Change forward lab_sea: test both EVP
769       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
770    o Initial check-in of lab_sea adjoint
771      (very similar to natl_box_adjoint/code_seaice)
772      * used C-grid and EVP solver
773      * used KPP, GM/Redi
774      * uses inAdExact=.TRUE.
775      * gradient checks fail for both ADM and TLM
776        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
777        f.d. gradients actually seem more problematic than ADM, TLM gradients;
778        issue is related to forward mismatch between g77 an ifort
779    o pkg/seaice: overhaul of thermodynamics
780     - growth.F and groatb.F are replaced by new routine seaice_growth.F
781     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
782     - move a few global fields out of SEAICE.h into seaice_growth.F and
783       make them 2D (FICE/QNETO/ ...)
784     - remove FO (it is the same as QNETO)
785     - introduce a few local fields to avoid modifying external fields such
786       as atemp, etc.
787    
788    checkpoint58s_post
789    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
790      changed exf_set_gen.F so that
791        genperiod=0 means input file is one time-constant field and
792        genperiod=-12 means input file contains 12 monthly means
793    o CG2D: use pre-computed solver main-diagonal (stored in common block);
794      this affects truncation error ; generate new output file for exp. which
795      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
796        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
797        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
798        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
799        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
800        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
801    o start implementation of deep-atmosphere and anelastic formulation
802    o verification: remove 2nd copy of input files and use script "prepare_run"
803      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
804    o mom_common/vecinv/fluxform: fix a few initialisation isssues
805    o profiles: fix for multithreaded case
806    
807    o diagnostics: rename few diags:
808      s/'PRESSURE'/'RCENTER '/g
809      s/'TICE    '/'oceFreez'/g
810      s/'TAUX    '/'oceTAUX '/g
811      s/'TAUY    '/'oceTAUY '/g
812      s/'SWFLUX  '/'oceQsw  '/g
813      s/DIFx/DFxE/g
814      s/DIFy/DFyE/g
815      and add few ocean-forcing diagnostics:
816      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
817    o modifications to pkg/seaice/growth.F and budget.F, which change results of
818      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
819      as actual snow thickness.  It now refers everywhere to effective snow
820      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
821    
822    checkpoint58r_post
823    o modifications to pkg/seaice/growth.F, which change results of
824      lab_sea experiment: fixes pertain to melting snow over open water, to
825      masking EVAP under sea ice, and to using the correct AREA variable for
826      computations of EVAP, PRECIP, HSNOW, and GHEFF
827    o add ability to read bathy, salt, and theta using MNC (off by def)
828    o add flooding algorithm and advection of HSNOW for pkg/seaice;
829      both are turned off by default and do no change any results
830    o seaice advection with pkg/thsice: a step toward the use of non-linear
831      advection scheme, but #ifdef or commented out for now (requires more EXCH).
832    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
833      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
834      in natl_box (affects results @ truncation level: update output.txt)
835    o multi-threading and IO:
836      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
837      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
838        (needed to work with SingleCpuIO): tested in all verif. exp.
839    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
840      affects the results (but none of the verification test uses this scheme).
841    o Adding some pkg/diagnostics capability to pkg/seaice
842      (will certainly be subject to changes)
843    o ctrl: adding new control variables:
844      lwflux, lwdown, evap, snowprecip, apressure, runoff
845    
846    checkpoint58q_post
847    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
848      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
849      high_res_cube configuration by 4% on Columbia.
850    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
851      add (in global_with_exf/code) a version of EXF_INTERP_READ without
852      dynamical allocation (seems to work in multi-threaded).
853    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
854      single CPU io) so that TAF does not have to see EESUPPORT.h
855    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
856    
857    checkpoint58p_post
858    o obcs: stop if obcs is used with useCDscheme = .true.
859    o shelfice:
860     - fix a sign error so that no slip at shelfice interface works
861     - remove stop for combination non-hydrostatic code and shelfice. That does
862       not mean, that the results are correct, but at least they are numerically
863       stable
864    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
865    o added adjoint exch routined for all exch*3d* routines
866      and updated flow directives
867    
868    checkpoint58o_post
869    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
870      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
871    o change controling S/R for writing pickup file (new S/R do_write_pickup)
872      and clean-up reading/writing of pickup files.
873    o fix local version of read/write pickup (NH part) in rotating_tank/code
874    o simplify EXCH interface:
875     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
876     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
877    o added the regrid package
878    o shelfice:
879     - add a simple boundary layer scheme to reduce noise
880     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
881    
882    checkpoint58n_post
883    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
884       local variable (not in common block).
885    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
886      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
887      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
888        to work with SingleCpuIO.
889    o add "_d 0" to real constant of pkg/cfc subroutines ;
890       update exp. cfc_exemple & tutorial_cfc_offline output files.
891    o multi-threading and IO:
892      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
893        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
894      - barrier before and after reading.
895      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
896      - avoid using MDS_WRITELOCAL for LAND pkg output.
897      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
898        common-block variables ; Allows multi-threading with master-thread IO.
899    o change default MAX_NO_THREADS from 32 to 4 ;
900      and stop cleanly when MAX_NO_THREADS is too small.
901    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
902    
903    checkpoint58m_post
904    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
905       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
906    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
907       keep global_ocean.90x40x15 (for AD testing) with former secondary test
908       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
909    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
910        add MITgcm_tutorials (= code + all the tutorials)
911    o ecco, option to compute cost for total ssh (mean+anom)
912    o consistent with addition of ptracer and ssh in pkg/profiles
913    o profiles: adding ptracer and ssh
914    o testreport: change multi-test output-file name
915      (from output.txt.{name} to output.{name}.txt)
916    o profiles: now ok for mutli-tiles case
917    o seaice: add 4 parameters for different advection schemes for area,
918      (effective) seaice thickness, enthalphy, and snow height. Their default
919      is the standard parameter SEAICEadvScheme
920    o calc_gw:
921     - add cosFacU in zonal viscous flux (harmonic.visc.).
922     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
923       of tutorial_plume_on_slope.
924    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
925    o calc_gw: true flux-form, account for horizontal grid spacing.
926      update rotating_tank results, but not plume_on_slope (affected at
927      truncation level, 11 digits).
928    
929    checkpoint58l_post
930    o calc_gw:
931     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
932     - remove side-drag for now (need to fix it); update plume_on_slope results.
933     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
934    o commit code to make SST/SSS weights spatially variable
935      (based on either variable in-situ or variable initial T/S weights)
936    o pkg/ecco:
937      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
938        now based on horizontally varying weights wthetaLev, wsaltLev
939      * cost_averagesflags now returns year indices in addition to day, month
940      * sflux balance is performed on annual basis
941        (sflxumm, sfluxmm2, bal_sfluxmm)
942      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
943        including separate counting and multipliers
944    o pkg/rbcs
945      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
946    
947    checkpoint58k_post
948    o testreport:
949     - always build in dir. "build" (if not there, mkdir build instead of building
950       & running in input)
951     - run in dir run (if it exists), in build otherwise.
952     - call prepare_run (if input/prepare_run exists)
953     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
954    o pkg/exf modifications to interpolation and rotation routines for more
955       reasonable treatment of North Pole singularity: for tracers North Pole
956       value is set to northernmost zonal-mean value, for zonal velocity it is
957       set to zero, and for meridional velocity it is set to northernmost value.
958    o pkg/exf/exf_check_range.F
959     - add tile index to diagnostics and move stop statement to the very
960       end of the routine.
961    o pkg/diagnostics: (diagnostics_main_init.F)
962      define title of isomorphic variables according to the current config.
963    o pkg/thsice with pkg/seaice dynamics:
964    - fix domain of computation (interior only, required for exf) and do exchanges
965    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
966    o towards a standard way of dealing with multi-threading in MONITOR
967      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
968    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
969       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
970    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
971    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
972    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
973       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
974    o tracer advection:
975     - clean-up and simplify calc_common_factors.F
976     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
977       advection subroutine (but still not used within DST advection S/R)
978    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
979    
980    checkpoint58j_post
981    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
982      from file (collects calls previously in FORWARD_STEP)
983    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
984    o adjoint store dir. adjusted accordingly
985    o genmake2
986      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
987    
988    checkpoint58i_post
989    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
990      on wind stress (SEAICEstressFactor defaults to 1.)
991    o Total number of Timers is finite (<=40): comment out 2 non-essential one
992      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
993    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
994      on CS-grid: no longer loosing mass.
995    o exf & curvilinear-grid: no longer modify longitude xC & xG.
996  o pkg/ggl90: fix sloppy output and fix a bug  o pkg/ggl90: fix sloppy output and fix a bug
997    o pkg/seaice: added SEAICEuseEVPpickup parameter
998      - Set to false in order to start EVP solver with
999        non-EVP pickup files when using SEAICEuseEVP
1000      - fix sign error in diffusion in seaice_calc_rhs
1001    
1002  checkpoint58h_post  checkpoint58h_post
1003  * Modifications for bottom topography control  * Modifications for bottom topography control

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