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revision 1.812 by heimbach, Thu May 10 16:55:58 2007 UTC revision 1.910 by mlosch, Wed Nov 14 16:01:11 2007 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
8    o lab_sea.hb87: modify the domain & update output.hb87.txt :
9      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
10      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
11      process. Fixed here by closing the domain at the Northern boundary.
12    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
13    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
14      a set of consecutive levels in/from a 3-D array.
15    o pkg/ptracers:
16      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
17      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
18    
19    checkpoint59j
20    o in pkgs: dic, obcs, offline, rbcs:
21      standard way to compute coeff. for time interpolation between 2 time reccords
22      which retains full precision (& make results less dependent on compiler).
23      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
24    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
25      packages instead of reading ice cover and wind speed separately
26    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
27     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
28      to allow to compile customized code before the update)
29    o cleaning-up:
30      - fix CPP instruction syntax in pkg/obcs
31      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
32        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
33      - fix some threads issue in IO parts.
34    o pkg/dic:
35      - add tons of "_d 0" (--> much better testreports !)
36       and then update outputs of tutorial_global_oce_biogeo
37    o pkg/mom_fluxform:
38      add a special version of momentum advection intended to conserve momentum
39      next to a bathymetry step or a coastline edge. (default = off = #undef)
40    o new read/write pickup version:
41      - for now, only implemented for main (mdsio) pickup file.
42      - write out only what is needed to restart; merge pickup_nh , pickup_ph
43        and main pickup together.
44      - read meta file; read only what is needed to restart; stop if a field
45        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
46        if it make sense (even if the restart is not perfect).
47      - if no meta file, assume that pickup to read corresponds exactly to
48        a pickup that would currently be written.
49      - read pickup written in the old format (until checkpoint59i) if it
50        recognizes an old meta file (no field-list).
51      - add a meta file in exp. which starts from a pickup: 2 cases:
52        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
53         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
54        b) a meta file describing the content of the associated pickup file
55         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
56    o pkg/mdsio & pkg/rw:
57      - new routine to read a meta file ; new set of routine to read
58        Multiple-fields file (with meta file).
59    o added open boundary conditions capability for seaice
60        HSNOW, HSALT, UICE, and VICE
61    
62    checkpoint59i
63    o adjoint:
64      * fix multiDimAdvection adjoint
65        (partial recomputation problem by TAF for fVerT(:,:,kDown)
66        and comlev1 size definition (maxpass vs. max. number of tracers)
67      * verification/global_ocean.90x45x15 adjoint now tests
68        NLFS and multiDimAdvection using DST3 (=30)
69      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
70    o pkg/kpp: add "_d 0" to real constant (if missing);
71      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
72      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
73    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
74      for internal parameters related to restart process (formerly from PARAMS.h)
75      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
76    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
77      as argument. (only atm2d & obcs write_pickup have not yet been updated)
78    o pkg/monitor:
79      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
80      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
81      - account for deep Atmosphere factor and density factor (anelastic)
82    o added open boundary conditions capability for seaice HEFF and AREA
83    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
84      thermodynamics
85      - requires a little reorganization, which affects the testreport results
86        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
87        so that now the conservative form is tested
88      - add a few comments
89    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
90    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
91    o add new diagnostics to seaice: advective, diffusive fluxes (only for
92      multidim-advection, for scheme 2 they are not filled) and transports,
93      thermodynamic growth rates
94    o change units of EmPmR (inside the code, + within coupling interface)
95      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
96      Affects results @ truncation level (cg2d match) and update output of
97       experiments: lab_sea(6), global_ocean.90x40x15(10),
98      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
99      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
100      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
101      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
102    
103    checkpoint59h
104    o pkg/exf:
105      - improve vectorization by moving if-statement out of loops in
106        exf_mapfields, exf_radiation
107      - exf_bulkformulae.F: introduce 2D fields and vectorize code
108    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
109    o testreport:
110      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
111        monitor & update offline_exf_seaice exp. output.
112      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
113    o pkg/seaice:
114      - bug fix in the evp solver: boundary conditions were affected be
115        masking of zMax/zMin (changes results)
116      - minor bug fix in boundary conditions in seaice_calc_strainrates
117        (changes results for no_slip)
118      - seaice_lsr.F: make interpolation of eta dependent on boundaries
119      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
120      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
121        stress formulation and no-slip boundary conditions
122    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
123      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
124    o pkg/seaice: a first HSALT time stepping equation has been checked in
125    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
126      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
127      without requiring DO-IF statements
128    o pkg/thsice:
129      use continuous power-law function for partition of energy between lateral
130      melting/freezing and thinning/thickening ; old code using step function
131      still available with #undef THSICE_FRACEN_POWERLAW
132      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
133    o testreport: change AD testing : check against results/output_adm.txt
134      using same scripts as for forward test.
135    
136    checkpoint59g
137    o adjoint testing: in preparation for changing testreport:
138      - output format: cost and grad written on separated lines
139      - ad output results in directory "results" (instead of "results_ad")
140    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
141    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
142    o pkg/ecco: allow user defined cost function contributions
143    o testreport:
144      Allow to choose (per experiment) the list of tested output variables
145       and the main variable (used to issue a pass/FAIL ) ;
146      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
147      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
148      Also modify printing of summary:
149       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
150       b) echo the list of tested variables in the individual summary.txt of
151          each experiment.
152    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
153      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
154      (but still depend on the tile decompostion of the domain).
155    o pkg/seaice: change a discretization detail to make the B-grid code
156      "more symmetric". This change is likely to remove all "ridges/leads" that
157      where quasi-aligned with the grid in B-grid solutions. It may also be
158      the solution to the stress coupling issues with the B-grid.
159    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
160      remove .cvsignore from input dir. (since testreport no longer run here).
161    o pkg/thsice:
162     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
163     - fix reshaping of sea-ice just after advection:
164       melt all the ice only if ice-volume is too small.
165     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
166       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
167     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
168    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
169      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
170    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
171      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
172      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
173      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
174      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
175      -> update output.txt
176    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
177     this affects truncation error: -> update output.txt of exp:
178      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
179      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
180    
181    checkpoint59f
182    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
183    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
184      a bounded range (in forward mode)
185    o pkg/ecco, ctrl, autodiff and mom_common:
186     internal parameter controls, completements of implementations
187    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
188    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
189      (not seem any difference in testing results).
190    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
191       at face corners.
192    o pkg/generic_advdiff:
193     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
194      loop range indices for computing vertical advection tendency
195      and do the calculation in the interior only (no overlap) ;
196      for now, only implemented for SOM advection (to save CPU time).
197     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
198    o exch2 adjoint
199      First set of changes:
200      - add exch2 hand-written adjoint templates
201      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
202        This will require cleanup in pkg/autodiff/*.F
203        (changed routines currently kept separate in verif. code/)
204      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
205        that used to hide exch2 or cubed-sphere specific code
206        (commented via 'cph-exch2')
207    o pkg/seaice
208      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
209    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
210       output of global_ocean.cs32x15.thsice .
211    
212    checkpoint59e
213    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
214      for B-grid vector (not yet tested) and C-grid vector (<- only used
215      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
216    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
217      (#ifdef ALLOW_SALT_PLUME)
218    o gather_2d/scatter_2d: removed halo regions
219    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
220      scheme and the corresponding test case (under front_relax dir). For now,
221      only available with Skew-flux form and not yet tested in realistic set-up.
222      adjoint: store directives updated, but gradient checks deteriorated,
223      so maybe GM/Redi adjoint is now broken.
224    o seaice adjoint
225      * add AREA, HEFF, HSNOW as control variable
226        (should not change lab_sea results)
227      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
228    o pkg/seaice:
229      * added computation of saltFlux in seaice_growth;
230        For time being, sea ice salinity is assumed constant
231        contribution of snow flooding to freshening of sea ice is neglected.
232        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
233        defaults to 0.0 in order to maintain backward compatibility.
234        Typical values for SEAICE_salinity are 4 to 10 g/kg.
235      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
236      * added SEAICE_availHeatFrac, which specifies fraction of surface level
237        heat content used to melt or grow ice
238      * commented out cap of HICE: it helps keep ice thinner
239      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
240      * applied OBCS T/S mask to HEFFM sea ice mask
241    
242    checkpoint59d
243    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
244     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
245     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
246    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
247     and change default value of parameter "GM_Small_Number";
248     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
249       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
250       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
251    o pkg/ecco: cost function when applying pkg/smooth to controls
252    o pkg/ctrl: add forcingPrecond run time parameter
253    o pkg/seaice:
254     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
255     - fix bug in metric terms of u-equation in LSR solver (implicit part),
256       changes verification/lab_sea
257     - rearrange implicit part of u-equation in LSR solver to make it easier to
258       read, understand, and debug. This causes changes at the truncation level.
259     - fix (serious) bug in the boundary conditions (sign error in the implicit
260       part) of the LSR solver. Changes all LSR results.
261     - fixed problem with HSNOW initialization to avoid thick snow when AREA
262       is initilized with small values - does not change lab_sea results.
263     - added HsnowFile initialization capability
264    o pkg/smooth: addition to model/src and pkg/ctrl so allow
265     initialization of pkg/smooth and application to control vector
266    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
267    o dependencies: pkg/profiles requires pkg/cal
268    o pkg/profiles:
269     - added option ALLOW_PROFILES_GENERICGRID
270         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
271         that interpolation information (grid points and coefficients) is provided
272         within the netcdf input files.
273         -> sample matlab scripts can be found in MITgcm_contrib/gael
274         that allow you to prepare netcdf input files.
275     - also modified: cleaner include statements, cleaner error print statements,
276       cleaner stops when error, and more tests of the netcdf input files consistency.
277    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
278    o pkg/seaice:
279     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
280       requires a new routine: seaice_diagnostics_fill.F
281     - make sure that seaice does not move if not forced (pressure replacement
282       method, Hibler and Ip, 1995), changes results
283     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
284     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
285       It is turned off by default (=-1.), because it changes the results.
286     - make it possible to read AREA from a file, too.
287    
288    checkpoint59c
289    o add S/R and diagnostics for oceanic mixed-layer depth
290    o move GMRedi call after all vertical mixing schemes (including KPP)
291    o pkg/thsice:
292     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
293      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
294    o pkg/obcs:
295     - bug fix for balance code
296    o pkg/seaice:
297      - allow values of SEAICE_elasticParm > 1
298      - add new parameter SEAICE_evpTauRelax as an alternative
299        to SEAICE_elasticParm
300      - make lsr boundary conditions free slip (by default), changes result
301      - add code for no slip boundary conditions for lsr
302      - set minimum of zeta to zero (and not 4e8) (changes results)
303      - add a cap on AREA after advecting AREA if seaice_growth is not called
304    o change calculation of Visbeck K:
305      - no longer depend on tapering scheme; instead, compute slope (limited
306        by GM_maxSlope). this is equivalent to what was comuted before with
307        clipping or linear tappering.
308      - fix vertical averaging (wrong by 1/2 level)
309      - leave the old version (but will not be maintained) within
310        #ifdef OLD_VISBECK_CALC / #endif
311      - update output of exp. ideal_2D_oce
312    o change error catch in calc_r_star to improve vectorization
313    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
314      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
315    o adjoint:
316      Re-organized adjoint checkpointing according to Matt Mazloff
317      (but with modifs/completions/cleanups)
318      Storing is now bundled into large arrays to optimized I/O
319      (and second step in cleanup of the_main_loop)
320    
321    checkpoint59b
322    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
323      - export/import (between ocean & coupler) fields needed for ocean DIC.
324    o pkg/seaice:
325      - get rid of three more exchanges seaice_calc_viscosities (required
326        different loop boundaries in seaice_lsr and seaice_ocean_stress)
327      - bug fix in seaice_ocean_stress (update of lab_sea required)
328      - reduce loop boundaries to necessary minimum also in seaice_evp
329      - go back to the old way of computing deltaC/Z as the adjoint likes that
330        better
331    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
332      passive tracer to an Age Tracer) + update output.txt
333    o pkg/exf:
334      - implement A-grid / C-grid selection for wind-stress input files.
335      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
336      for now, in exf_bulk_largeyeager04.F only :
337      - change implementation for case where windspeed + 2. components wind-stress
338        are read-in. AND use rhoConstFresh to convert evap.
339    o pkg/seaice:
340      - use correct EXCH_UV for wind-forcing (on A-grid).
341      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
342        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
343    o pkg/exf:
344      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
345      EXF_INTERPOLATION:
346      - merge global_with_exf/code version of exf_interp_read.F
347        to the main code ;
348      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
349        reading the file ; Important: This options needs to be defined to recover
350        previous code.
351        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
352      - no longer loose real*8 precision along the way when using exf_iprec=64.
353  o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)  o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
354      - change discretisation of evp-solver in order to avoid another exchange
355        (changes lab_sea) and clean up a little
356      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
357        help the adjoint (this also changes the results slightly)
358      - add a few "_d 0" where they had been missing in seaice_evp.F
359      - cleaning up: remove unused seaice_calc_rhs.F
360  o pkg/exf: some cleaning-up:  o pkg/exf: some cleaning-up:
361    - change various "constants" into runtime parameters    - change various "constants" into runtime parameters
362    - cleaned-up Large&Yeager04 routine which should eventually    - cleaned-up Large&Yeager04 routine which should eventually
# Line 18  o pkg/exf: some cleaning-up: Line 370  o pkg/exf: some cleaning-up:
370  o pkg/thsice:  o pkg/thsice:
371   fix few little problems, in thsice_calc_thickn.F:   fix few little problems, in thsice_calc_thickn.F:
372    - growth vertically (and not laterally) if iceFrac == iceMaskMax    - growth vertically (and not laterally) if iceFrac == iceMaskMax
373    - melt laterally only if hIce < hThinIce (as the comments say)    - melt only laterally if hIce < hThinIce (as the comments say)
374    and in thsice_extend.F:    and in thsice_extend.F:
375    - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)    - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
376    - start to form ice as soon as the minimum ice-volume is reachable.    - start to form ice as soon as the minimum ice-volume is reachable.
# Line 55  o in FFIELDS.h: Line 407  o in FFIELDS.h:
407       ATMOSPHERIC_LOADING is #define).       ATMOSPHERIC_LOADING is #define).
408  o pkg/kpp: replaced _KPP_RL with _RL  o pkg/kpp: replaced _KPP_RL with _RL
409  o bug fixes for vertical diffusivity computations when both KPP and  o bug fixes for vertical diffusivity computations when both KPP and
410      3D diffusivity arrays are used.      3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
411        are no longer updating the vertical diffusivity array
412        (passed as argument) but are (re-) setting those arrays.
413  o pkg/seaice: fix bug in evp solver, while doing that  o pkg/seaice: fix bug in evp solver, while doing that
414    - change (improve?) discretization of stress computations for both    - change (improve?) discretization of stress computations for both
415      cgrid-lsr and evp solver      cgrid-lsr and evp solver

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