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revision 1.740 by heimbach, Fri Oct 27 05:19:42 2006 UTC revision 1.952 by mlosch, Tue Feb 5 13:34:12 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 add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
8      usingSphericalGrid, this allows to define the rotated grid coordinates
9      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
10      geographical coordinates according to the inverse of the rotation defined
11      by the Euler angles, so that Coriolis parameter and online-interpolation by
12      exf works with the geographical coordinates on XC/YC/XG/YG.
13      Naturally, this feature does not work with all packages, so some
14      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
15      profiles), because there the coordinates are assumed to be regular
16      spherical grid coordinates.
17    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
18      - introduce isopycnal diffusion coefficient control.
19    o tools/adjoint_options:
20      - additional control vector components.
21    o pkg/mnc: have mnc create marginally meaning full coordinate variables
22      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
23    o pkg/mypackage:
24      - add example of read/write pickup for state-var ;
25      - add entry points to the main code for state-vars diags & write-pickup.
26    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
27      transitions for useExfYearlyFields
28      - add new subroutine that determines the file to read from for
29        use*YearlyFields = .TRUE. and .FALSE.
30      - add a verification experiment to global_with_exf that tests
31        useExfYearlyFields with USE_EXF_INTERPOLATION defined
32    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
33      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
34      subroutines (which could be generated from a template, because they are
35      almost identical), for now they are included in obcs_prescribe_read.F for
36      simplicity
37    o pkg/exf:
38      - add a little more diagnostic to exf_interp_read (in analogy to
39        mds_read_field, can be turned off with debugLevel < debugLevA=1)
40      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
41        ugly but fast by unrolling short inner loops, inserting a unroll=8
42        directive in routine lagran, and splitting a loop and making do while the
43        outermost loop (the latter requires the intoduction of index arrays)
44    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
45    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
46      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
47    o verification/seaice_obcs: updated for restart test and latest options
48    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
49      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
50      for now this is only available for the C-grid code and also within
51      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
52    
53    checkpoint59m
54    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
55      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
56    o gad_som : fix flux output (& diagnostics) to have same units as other  
57      advection scheme fluxes (was previously multiplied by deltaT).  
58    o added verification/seaice_obcs both to test seaice open boundaries
59      and to provide an example matlab scrpt for generating them
60    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
61    o pkg/salt_plume: clean up salt_plume_frac.F to
62      remove redundancy in PlumeMethod 1 and 4
63    o pkg/kpp: added saltplume diagnostics
64    o pkg/obcs and pkg/seaice:
65      - do not set uice and vice to zero when OB*icefile are unspecified
66      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
67      - moved seaice tracer obcs after call to seaice_growth
68    o pkg/salt_plume: added various options for salt plume depth
69      criterion and for vertical distribution of the salt
70    
71    checkpoint59l
72    o pkg/ptracers: new version of ptracers pickup:
73      read meta file and write only fields which are needed to restart.
74      ( same logic as main pickup file ; also using pickupStrictlyMatch )
75    o pkg/seaice:
76      - add timescale for melting due to warm mixed layer as a means of
77        setting SEAICE_availHeatFrac more conveniently
78      - add a CPP-flag/runtime parameter check for flooding algorithm
79      - reformulated availHeat in seaice_growth.F to be independent of AREA
80    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
81      unit changes
82    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
83    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
84      SX vector computer.
85    o pkg/seaice:
86      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
87        seaice forcing fields can now be read only through pkg/exf
88      - removed some unused halos
89    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
90    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
91      or U/VICE from U/VWIND before computing U/VSTRESS
92    
93    checkpoint59k
94    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
95      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
96    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
97      all experiments pass when compile with un-initialised var. checking option.
98    o added pkg/salt_plume
99    o script to test restart (for now, in MITgcm_contrib/jmc_script)
100    o pkg/seaice: new read/write pickup version.
101      read meta file and write only fields which are needed to restart.
102      ( same logic as main pickup file ; also using pickupStrictlyMatch )
103    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
104    o lab_sea.hb87: modify the domain & update output.hb87.txt :
105      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
106      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
107      process. Fixed here by closing the domain at the Northern boundary.
108    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
109    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
110      a set of consecutive levels in/from a 3-D array.
111    o pkg/ptracers:
112      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
113      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
114    
115    checkpoint59j
116    o in pkgs: dic, obcs, offline, rbcs:
117      standard way to compute coeff. for time interpolation between 2 time reccords
118      which retains full precision (& make results less dependent on compiler).
119      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
120    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
121      packages instead of reading ice cover and wind speed separately
122    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
123     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
124      to allow to compile customized code before the update)
125    o cleaning-up:
126      - fix CPP instruction syntax in pkg/obcs
127      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
128        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
129      - fix some threads issue in IO parts.
130    o pkg/dic:
131      - add tons of "_d 0" (--> much better testreports !)
132       and then update outputs of tutorial_global_oce_biogeo
133    o pkg/mom_fluxform:
134      add a special version of momentum advection intended to conserve momentum
135      next to a bathymetry step or a coastline edge. (default = off = #undef)
136    o new read/write pickup version:
137      - for now, only implemented for main (mdsio) pickup file.
138      - write out only what is needed to restart; merge pickup_nh , pickup_ph
139        and main pickup together.
140      - read meta file; read only what is needed to restart; stop if a field
141        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
142        if it make sense (even if the restart is not perfect).
143      - if no meta file, assume that pickup to read corresponds exactly to
144        a pickup that would currently be written.
145      - read pickup written in the old format (until checkpoint59i) if it
146        recognizes an old meta file (no field-list).
147      - add a meta file in exp. which starts from a pickup: 2 cases:
148        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
149         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
150        b) a meta file describing the content of the associated pickup file
151         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
152    o pkg/mdsio & pkg/rw:
153      - new routine to read a meta file ; new set of routine to read
154        Multiple-fields file (with meta file).
155    o added open boundary conditions capability for seaice
156        HSNOW, HSALT, UICE, and VICE
157    
158    checkpoint59i
159    o adjoint:
160      * fix multiDimAdvection adjoint
161        (partial recomputation problem by TAF for fVerT(:,:,kDown)
162        and comlev1 size definition (maxpass vs. max. number of tracers)
163      * verification/global_ocean.90x45x15 adjoint now tests
164        NLFS and multiDimAdvection using DST3 (=30)
165      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
166    o pkg/kpp: add "_d 0" to real constant (if missing);
167      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
168      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
169    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
170      for internal parameters related to restart process (formerly from PARAMS.h)
171      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
172    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
173      as argument. (only atm2d & obcs write_pickup have not yet been updated)
174    o pkg/monitor:
175      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
176      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
177      - account for deep Atmosphere factor and density factor (anelastic)
178    o added open boundary conditions capability for seaice HEFF and AREA
179    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
180      thermodynamics
181      - requires a little reorganization, which affects the testreport results
182        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
183        so that now the conservative form is tested
184      - add a few comments
185    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
186    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
187    o add new diagnostics to seaice: advective, diffusive fluxes (only for
188      multidim-advection, for scheme 2 they are not filled) and transports,
189      thermodynamic growth rates
190    o change units of EmPmR (inside the code, + within coupling interface)
191      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
192      Affects results @ truncation level (cg2d match) and update output of
193       experiments: lab_sea(6), global_ocean.90x40x15(10),
194      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
195      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
196      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
197      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
198    
199    checkpoint59h
200    o pkg/exf:
201      - improve vectorization by moving if-statement out of loops in
202        exf_mapfields, exf_radiation
203      - exf_bulkformulae.F: introduce 2D fields and vectorize code
204    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
205    o testreport:
206      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
207        monitor & update offline_exf_seaice exp. output.
208      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
209    o pkg/seaice:
210      - bug fix in the evp solver: boundary conditions were affected be
211        masking of zMax/zMin (changes results)
212      - minor bug fix in boundary conditions in seaice_calc_strainrates
213        (changes results for no_slip)
214      - seaice_lsr.F: make interpolation of eta dependent on boundaries
215      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
216      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
217        stress formulation and no-slip boundary conditions
218    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
219      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
220    o pkg/seaice: a first HSALT time stepping equation has been checked in
221    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
222      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
223      without requiring DO-IF statements
224    o pkg/thsice:
225      use continuous power-law function for partition of energy between lateral
226      melting/freezing and thinning/thickening ; old code using step function
227      still available with #undef THSICE_FRACEN_POWERLAW
228      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
229    o testreport: change AD testing : check against results/output_adm.txt
230      using same scripts as for forward test.
231    
232    checkpoint59g
233    o adjoint testing: in preparation for changing testreport:
234      - output format: cost and grad written on separated lines
235      - ad output results in directory "results" (instead of "results_ad")
236    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
237    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
238    o pkg/ecco: allow user defined cost function contributions
239    o testreport:
240      Allow to choose (per experiment) the list of tested output variables
241       and the main variable (used to issue a pass/FAIL ) ;
242      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
243      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
244      Also modify printing of summary:
245       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
246       b) echo the list of tested variables in the individual summary.txt of
247          each experiment.
248    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
249      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
250      (but still depend on the tile decompostion of the domain).
251    o pkg/seaice: change a discretization detail to make the B-grid code
252      "more symmetric". This change is likely to remove all "ridges/leads" that
253      where quasi-aligned with the grid in B-grid solutions. It may also be
254      the solution to the stress coupling issues with the B-grid.
255    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
256      remove .cvsignore from input dir. (since testreport no longer run here).
257    o pkg/thsice:
258     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
259     - fix reshaping of sea-ice just after advection:
260       melt all the ice only if ice-volume is too small.
261     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
262       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
263     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
264    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
265      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
266    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
267      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
268      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
269      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
270      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
271      -> update output.txt
272    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
273     this affects truncation error: -> update output.txt of exp:
274      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
275      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
276    
277    checkpoint59f
278    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
279    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
280      a bounded range (in forward mode)
281    o pkg/ecco, ctrl, autodiff and mom_common:
282     internal parameter controls, completements of implementations
283    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
284    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
285      (not seem any difference in testing results).
286    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
287       at face corners.
288    o pkg/generic_advdiff:
289     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
290      loop range indices for computing vertical advection tendency
291      and do the calculation in the interior only (no overlap) ;
292      for now, only implemented for SOM advection (to save CPU time).
293     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
294    o exch2 adjoint
295      First set of changes:
296      - add exch2 hand-written adjoint templates
297      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
298        This will require cleanup in pkg/autodiff/*.F
299        (changed routines currently kept separate in verif. code/)
300      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
301        that used to hide exch2 or cubed-sphere specific code
302        (commented via 'cph-exch2')
303    o pkg/seaice
304      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
305    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
306       output of global_ocean.cs32x15.thsice .
307    
308    checkpoint59e
309    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
310      for B-grid vector (not yet tested) and C-grid vector (<- only used
311      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
312    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
313      (#ifdef ALLOW_SALT_PLUME)
314    o gather_2d/scatter_2d: removed halo regions
315    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
316      scheme and the corresponding test case (under front_relax dir). For now,
317      only available with Skew-flux form and not yet tested in realistic set-up.
318      adjoint: store directives updated, but gradient checks deteriorated,
319      so maybe GM/Redi adjoint is now broken.
320    o seaice adjoint
321      * add AREA, HEFF, HSNOW as control variable
322        (should not change lab_sea results)
323      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
324    o pkg/seaice:
325      * added computation of saltFlux in seaice_growth;
326        For time being, sea ice salinity is assumed constant
327        contribution of snow flooding to freshening of sea ice is neglected.
328        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
329        defaults to 0.0 in order to maintain backward compatibility.
330        Typical values for SEAICE_salinity are 4 to 10 g/kg.
331      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
332      * added SEAICE_availHeatFrac, which specifies fraction of surface level
333        heat content used to melt or grow ice
334      * commented out cap of HICE: it helps keep ice thinner
335      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
336      * applied OBCS T/S mask to HEFFM sea ice mask
337    
338    checkpoint59d
339    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
340     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
341     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
342    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
343     and change default value of parameter "GM_Small_Number";
344     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
345       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
346       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
347    o pkg/ecco: cost function when applying pkg/smooth to controls
348    o pkg/ctrl: add forcingPrecond run time parameter
349    o pkg/seaice:
350     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
351     - fix bug in metric terms of u-equation in LSR solver (implicit part),
352       changes verification/lab_sea
353     - rearrange implicit part of u-equation in LSR solver to make it easier to
354       read, understand, and debug. This causes changes at the truncation level.
355     - fix (serious) bug in the boundary conditions (sign error in the implicit
356       part) of the LSR solver. Changes all LSR results.
357     - fixed problem with HSNOW initialization to avoid thick snow when AREA
358       is initilized with small values - does not change lab_sea results.
359     - added HsnowFile initialization capability
360    o pkg/smooth: addition to model/src and pkg/ctrl so allow
361     initialization of pkg/smooth and application to control vector
362    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
363    o dependencies: pkg/profiles requires pkg/cal
364    o pkg/profiles:
365     - added option ALLOW_PROFILES_GENERICGRID
366         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
367         that interpolation information (grid points and coefficients) is provided
368         within the netcdf input files.
369         -> sample matlab scripts can be found in MITgcm_contrib/gael
370         that allow you to prepare netcdf input files.
371     - also modified: cleaner include statements, cleaner error print statements,
372       cleaner stops when error, and more tests of the netcdf input files consistency.
373    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
374    o pkg/seaice:
375     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
376       requires a new routine: seaice_diagnostics_fill.F
377     - make sure that seaice does not move if not forced (pressure replacement
378       method, Hibler and Ip, 1995), changes results
379     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
380     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
381       It is turned off by default (=-1.), because it changes the results.
382     - make it possible to read AREA from a file, too.
383    
384    checkpoint59c
385    o add S/R and diagnostics for oceanic mixed-layer depth
386    o move GMRedi call after all vertical mixing schemes (including KPP)
387    o pkg/thsice:
388     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
389      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
390    o pkg/obcs:
391     - bug fix for balance code
392    o pkg/seaice:
393      - allow values of SEAICE_elasticParm > 1
394      - add new parameter SEAICE_evpTauRelax as an alternative
395        to SEAICE_elasticParm
396      - make lsr boundary conditions free slip (by default), changes result
397      - add code for no slip boundary conditions for lsr
398      - set minimum of zeta to zero (and not 4e8) (changes results)
399      - add a cap on AREA after advecting AREA if seaice_growth is not called
400    o change calculation of Visbeck K:
401      - no longer depend on tapering scheme; instead, compute slope (limited
402        by GM_maxSlope). this is equivalent to what was comuted before with
403        clipping or linear tappering.
404      - fix vertical averaging (wrong by 1/2 level)
405      - leave the old version (but will not be maintained) within
406        #ifdef OLD_VISBECK_CALC / #endif
407      - update output of exp. ideal_2D_oce
408    o change error catch in calc_r_star to improve vectorization
409    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
410      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
411    o adjoint:
412      Re-organized adjoint checkpointing according to Matt Mazloff
413      (but with modifs/completions/cleanups)
414      Storing is now bundled into large arrays to optimized I/O
415      (and second step in cleanup of the_main_loop)
416    
417    checkpoint59b
418    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
419      - export/import (between ocean & coupler) fields needed for ocean DIC.
420    o pkg/seaice:
421      - get rid of three more exchanges seaice_calc_viscosities (required
422        different loop boundaries in seaice_lsr and seaice_ocean_stress)
423      - bug fix in seaice_ocean_stress (update of lab_sea required)
424      - reduce loop boundaries to necessary minimum also in seaice_evp
425      - go back to the old way of computing deltaC/Z as the adjoint likes that
426        better
427    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
428      passive tracer to an Age Tracer) + update output.txt
429    o pkg/exf:
430      - implement A-grid / C-grid selection for wind-stress input files.
431      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
432      for now, in exf_bulk_largeyeager04.F only :
433      - change implementation for case where windspeed + 2. components wind-stress
434        are read-in. AND use rhoConstFresh to convert evap.
435    o pkg/seaice:
436      - use correct EXCH_UV for wind-forcing (on A-grid).
437      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
438        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
439    o pkg/exf:
440      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
441      EXF_INTERPOLATION:
442      - merge global_with_exf/code version of exf_interp_read.F
443        to the main code ;
444      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
445        reading the file ; Important: This options needs to be defined to recover
446        previous code.
447        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
448      - no longer loose real*8 precision along the way when using exf_iprec=64.
449    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
450      - change discretisation of evp-solver in order to avoid another exchange
451        (changes lab_sea) and clean up a little
452      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
453        help the adjoint (this also changes the results slightly)
454      - add a few "_d 0" where they had been missing in seaice_evp.F
455      - cleaning up: remove unused seaice_calc_rhs.F
456    o pkg/exf: some cleaning-up:
457      - change various "constants" into runtime parameters
458      - cleaned-up Large&Yeager04 routine which should eventually
459        replace exf_bulkformulae.F (changed names of S/R and CPP)
460        and merged various ALLOW_ATM_WIND options
461     only used with thsice pkg (in thsice_get_exf.F):
462      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
463        which are used when useStabilityFct_overIce=TRUE (= the default)
464      - change default values of ice & snow emissivity and scale downward LW
465        by ice & snow emissivity.
466    o pkg/thsice:
467     fix few little problems, in thsice_calc_thickn.F:
468      - growth vertically (and not laterally) if iceFrac == iceMaskMax
469      - melt only laterally if hIce < hThinIce (as the comments say)
470      and in thsice_extend.F:
471      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
472      - start to form ice as soon as the minimum ice-volume is reachable.
473     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
474      and cpl_aim+ocn
475    o pkg/kpp
476     - move computation of surface related input fields to KPP into a new
477       subroutine kpp_forcing_surf.F
478     - remove wrong (within bi,bj loops) EXCH calls.
479     - little cleaning (add argument myThid in last position, cvs header ...)
480     - for now, fix conservation problem by exchanging KPPviscAz (may not
481       be the best fix)
482    o pkg/seaice
483     - check for inconsistent evp parameter/cpp-flag combination
484     - remove leftover errIO flat for obsolete name list error handling
485    o OpenAD
486     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
487    
488    checkpoint59a
489    o pkg/seaice: some parameter clarifications and a little bit of clean up
490    o pkg/thsice: rename run-time parameters:
491       himin       -> hIceMin
492       himin0      -> hThinIce
493       hihig       -> hThickIce
494       i0          -> i0swFrac
495       transCoef   -> bMeltCoef
496       frac_energy -> fracMelting
497      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
498       with default values (for now) that do not change the results.
499      remove old version of thsice vars advection in pkg/seaice.
500    o in FFIELDS.h:
501      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
502      - make pLoad & sIceLoad always available (but still only used if
503         ATMOSPHERIC_LOADING is #define).
504    o pkg/kpp: replaced _KPP_RL with _RL
505    o bug fixes for vertical diffusivity computations when both KPP and
506        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
507        are no longer updating the vertical diffusivity array
508        (passed as argument) but are (re-) setting those arrays.
509    o pkg/seaice: fix bug in evp solver, while doing that
510      - change (improve?) discretization of stress computations for both
511        cgrid-lsr and evp solver
512      - add a new routine to compute strain rates
513      - the above changes lab_sea results
514      - add no slip conditions for evp solver (off by default), lsr-version
515        may follow
516      - fix exchange for shear at Z-points (does not change lab_sea)
517      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
518        (to force the user to pick a time step since there is not "safe" way
519        of choosing it)
520      - add principal stress diagnostics
521      - rearrange fields for evp a little to avoid having to call a: too many
522        exchanges and b: exchanges for stress trensor components which we do
523        not have.
524      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
525        of evp, complete rewrite for lsr case (latter is does not yet work
526        in all cases)
527    o pkg/kpp: add code to have mixing in shelf ice caverns
528      - add myThid to all kpp routines (long overdue)
529    
530    checkpoint59
531    o pkg/exf:
532      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
533        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
534      - move exf header files from lower_case.h to UPPER_CASE.h ;
535        add missing cvs Header & Name
536      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
537      - add namelist param. selectStressGridPosition, exf_monFreq
538      - retire many _CLIM routines, and remove data.exf_clim
539        + params moved to data.exf
540        + climsst, climsss now handled by exf_set_gen, i.e.
541          climss?period=0 refers to constant field,
542          climss?period=-12 to monthly forcing
543      - split up namelists in data.exf
544    o pkg/seaice:
545      - remove seaice_exch and seaice_exch_uv
546      - remove superfluous exchange of theta
547      - add myThid to seaice_budget_ocean/ice
548      - add new interface for atmospheric wind forcing (C-grid only)
549        + new routine
550        + two new field (taux, tauy for stress over ice)
551        + removed one global field (DAIRN) for C-grid case only
552    o pkg/thsise
553      - 2nd set of modifs for thsice adjoint in conjunction with exf
554    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
555    
556    checkpoint58y_post
557    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
558      vertical diffusivity, similar to that in MOM4; turned on using
559      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
560      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
561    o Added capability for 3D specification of background vertical diffusion
562      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
563      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
564      "data" file that contains the 3D vertical diffusivity coefficients.
565    o ice dynamics (pkg/seaice) with thsice thermodynamics:
566      - add code within pkg thsice to advect & diffuse sea-ice fields
567      similar to (and will replace) what has been added in  seaice_advdiff.F,
568      but: - conserving Mass, Heat & Salt.
569           - better when using non-linear advection scheme (not yet fully tested)
570           - can also be used in atmospheric set-up (for now, only the diffusion).
571    
572    checkpoint58x_post
573    o IO option for global-file compact format:
574      - add options when generating topology (utils/exch2/matlab-topology-generator)
575      - add I/O capability (pkg/mdsio).
576      - adapt utils/matlab/rdmds.m to read this format.
577      for now long-line format not yet supported by pkg/mdsio (& exch2).
578    o shelfice: add a few diagnostics
579    
580    checkpoint58w_post
581    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
582      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
583      (and replace horiVertRatio in NH code).
584      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
585                         and tutorial_plume_on_slope (sensitive to truncation)
586    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
587      directly to drive seaice model (C-grid only)
588    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
589     - reintroduce computation of wind from stress,
590     - compute tau (in exf_bulkformulae.F) from windstress averaged to
591       mass points to avoid tau = 0
592     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
593    o rdmnc.m: make it work with "global" files created with gluemnc
594    o rdmnc.m : some improvements in dealing with singleton dimension
595      (tested on all testreport mnc output files).
596    o genmake2: disable pkg/profiles if netcdf test fails.
597    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
598    o move call to cal_readparms up to make calendar parameters/variable available
599      to all packages
600    
601    checkpoint58v_post
602    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
603      useDynP_inEos_Zc tested.
604    o pkg/exf: changes to properly interpolate/mask/scale initial fields
605    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
606      and portions thereof.  See read_cs.txt for description and examples.
607    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
608      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
609      following the great-circle arc between those 2 points.
610    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
611      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
612    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
613     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
614     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
615     - still needs work (not working with some options ; efficiency to improve)
616       and serious testing.
617     - use this scheme for temperature & salinity in 2 advection test exp.:
618       advect_xy & advect_xz, respectively.
619    
620    checkpoint58u_post
621    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
622    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
623    o testreport: add option "-skipdir" to skip some test.
624    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
625      momentum calculation.
626    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
627    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
628      remove checkpoint.F and the_correction_step.F (no longer used);
629      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
630    o add option (linFSConserveTr) to correct for tracer source/sink due to
631      Linear Free surface
632    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
633    o pkg/thsice: fix reading mnc-pickups
634    
635    checkpoint58t_post
636    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
637    o pkg/mdsio:
638     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
639       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
640       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
641     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
642     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
643       either MDS_READ_FIELD or MDS_WRITE_FIELD )
644     - new S/R (to replace MDSWRITEMETA), which allows to write more
645       informations (variable names, time ...) to meta files.
646     - modify rdmds.m to give back the meta file content.
647    o pkg/diagnostics: change vertical interpolation to be safer, and more
648       flexible (define p-levels to interpolate to in data.diagnostics);
649      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
650       diagnostic pointer.
651    o pkg/seaice: more cleaning up of seaice_growth, added many comments
652    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
653    o fix multi-category seaice:
654     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
655       SEAICE_MULTICATEGORY
656     - fix short wave heat flux
657    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
658       and allow to use EVP solver. Change forward lab_sea: test both EVP
659       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
660    o Initial check-in of lab_sea adjoint
661      (very similar to natl_box_adjoint/code_seaice)
662      * used C-grid and EVP solver
663      * used KPP, GM/Redi
664      * uses inAdExact=.TRUE.
665      * gradient checks fail for both ADM and TLM
666        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
667        f.d. gradients actually seem more problematic than ADM, TLM gradients;
668        issue is related to forward mismatch between g77 an ifort
669    o pkg/seaice: overhaul of thermodynamics
670     - growth.F and groatb.F are replaced by new routine seaice_growth.F
671     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
672     - move a few global fields out of SEAICE.h into seaice_growth.F and
673       make them 2D (FICE/QNETO/ ...)
674     - remove FO (it is the same as QNETO)
675     - introduce a few local fields to avoid modifying external fields such
676       as atemp, etc.
677    
678    checkpoint58s_post
679    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
680      changed exf_set_gen.F so that
681        genperiod=0 means input file is one time-constant field and
682        genperiod=-12 means input file contains 12 monthly means
683    o CG2D: use pre-computed solver main-diagonal (stored in common block);
684      this affects truncation error ; generate new output file for exp. which
685      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
686        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
687        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
688        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
689        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
690        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
691    o start implementation of deep-atmosphere and anelastic formulation
692    o verification: remove 2nd copy of input files and use script "prepare_run"
693      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
694    o mom_common/vecinv/fluxform: fix a few initialisation isssues
695    o profiles: fix for multithreaded case
696    
697    o diagnostics: rename few diags:
698      s/'PRESSURE'/'RCENTER '/g
699      s/'TICE    '/'oceFreez'/g
700      s/'TAUX    '/'oceTAUX '/g
701      s/'TAUY    '/'oceTAUY '/g
702      s/'SWFLUX  '/'oceQsw  '/g
703      s/DIFx/DFxE/g
704      s/DIFy/DFyE/g
705      and add few ocean-forcing diagnostics:
706      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
707    o modifications to pkg/seaice/growth.F and budget.F, which change results of
708      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
709      as actual snow thickness.  It now refers everywhere to effective snow
710      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
711    
712    checkpoint58r_post
713    o modifications to pkg/seaice/growth.F, which change results of
714      lab_sea experiment: fixes pertain to melting snow over open water, to
715      masking EVAP under sea ice, and to using the correct AREA variable for
716      computations of EVAP, PRECIP, HSNOW, and GHEFF
717    o add ability to read bathy, salt, and theta using MNC (off by def)
718    o add flooding algorithm and advection of HSNOW for pkg/seaice;
719      both are turned off by default and do no change any results
720    o seaice advection with pkg/thsice: a step toward the use of non-linear
721      advection scheme, but #ifdef or commented out for now (requires more EXCH).
722  o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens  o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
723    (identical results) and the standard version of EXTERNAL_FIELDS_LOAD    (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
724    in natl_box (affects results @ truncation level: update output.txt)    in natl_box (affects results @ truncation level: update output.txt)

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